198 files changed, 2018 insertions, 1423 deletions
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt
index 94bbc27ddd4f..9d620c153b04 100644
--- a/Documentation/cpu-hotplug.txt
+++ b/Documentation/cpu-hotplug.txt
@@ -50,16 +50,17 @@ additional_cpus=n (*)	Use this to limit hotpluggable cpus. This option sets
                        cpu_possible_map = cpu_present_map + additional_cpus
 (*) Option valid only for following architectures
- x86_64, ia64
+- ia64
-ia64 and x86_64 use the number of disabled local apics in ACPI tables MADT
+ia64 uses the number of disabled local apics in ACPI tables MADT to
-to determine the number of potentially hot-pluggable cpus. The implementation
+determine the number of potentially hot-pluggable cpus. The implementation
-should only rely on this to count the # of cpus, but *MUST* not rely on the
+should only rely on this to count the # of cpus, but *MUST* not rely
-apicid values in those tables for disabled apics. In the event BIOS doesn't
+on the apicid values in those tables for disabled apics. In the event
-mark such hot-pluggable cpus as disabled entries, one could use this
+BIOS doesn't mark such hot-pluggable cpus as disabled entries, one could
-parameter "additional_cpus=x" to represent those cpus in the cpu_possible_map.
+use this parameter "additional_cpus=x" to represent those cpus in the
+cpu_possible_map.
-possible_cpus=n         [s390 only] use this to set hotpluggable cpus.
+possible_cpus=n         [s390,x86_64] use this to set hotpluggable cpus.
                        This option sets possible_cpus bits in
                        cpu_possible_map. Thus keeping the numbers of bits set
                        constant even if the machine gets rebooted.
diff --git a/arch/alpha/include/asm/smp.h b/arch/alpha/include/asm/smp.h
index 544c69af8168..547e90951cec 100644
--- a/arch/alpha/include/asm/smp.h
+++ b/arch/alpha/include/asm/smp.h
@@ -45,7 +45,6 @@ extern struct cpuinfo_alpha cpu_data[NR_CPUS];
 #define raw_smp_processor_id()  (current_thread_info()->cpu)
 extern int smp_num_cpus;
-#define cpu_possible_map        cpu_present_map
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi(cpumask_t mask);
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index c626a821cdcb..d0f1620007f7 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -55,7 +55,7 @@ int irq_select_affinity(unsigned int irq)
        last_cpu = cpu;
        irq_desc[irq].affinity = cpumask_of_cpu(cpu);
-        irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu));
+        irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
        return 0;
 }
 #endif /* CONFIG_SMP */
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 351407e07e71..f238370c907d 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -94,6 +94,7 @@ common_shutdown_1(void *generic_ptr)
                flags |= 0x00040000UL; /* "remain halted" */
                *pflags = flags;
                cpu_clear(cpuid, cpu_present_map);
+                cpu_clear(cpuid, cpu_possible_map);
                halt();
        }
 #endif
@@ -120,6 +121,7 @@ common_shutdown_1(void *generic_ptr)
 #ifdef CONFIG_SMP
        /* Wait for the secondaries to halt. */
        cpu_clear(boot_cpuid, cpu_present_map);
+        cpu_clear(boot_cpuid, cpu_possible_map);
        while (cpus_weight(cpu_present_map))
                barrier();
 #endif
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index cf7da10097bb..d953e510f68d 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -70,11 +70,6 @@ enum ipi_message_type {
 /* Set to a secondary's cpuid when it comes online.  */
 static int smp_secondary_alive __devinitdata = 0;
-/* Which cpus ids came online.  */
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
 int smp_num_probed;             /* Internal processor count */
 int smp_num_cpus = 1;           /* Number that came online.  */
 EXPORT_SYMBOL(smp_num_cpus);
@@ -440,6 +435,7 @@ setup_smp(void)
                                ((char *)cpubase + i*hwrpb->processor_size);
                        if ((cpu->flags & 0x1cc) == 0x1cc) {
                                smp_num_probed++;
+                                cpu_set(i, cpu_possible_map);
                                cpu_set(i, cpu_present_map);
                                cpu->pal_revision = boot_cpu_palrev;
                        }
@@ -473,6 +469,7 @@ smp_prepare_cpus(unsigned int max_cpus)
        /* Nothing to do on a UP box, or when told not to.  */
        if (smp_num_probed == 1 || max_cpus == 0) {
+                cpu_possible_map = cpumask_of_cpu(boot_cpuid);
                cpu_present_map = cpumask_of_cpu(boot_cpuid);
                printk(KERN_INFO "SMP mode deactivated.\n");
                return;
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index c71b0fd7a61f..ab44c164d9d4 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -177,19 +177,19 @@ cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity)
 }
 static void
-dp264_set_affinity(unsigned int irq, cpumask_t affinity)
+dp264_set_affinity(unsigned int irq, const struct cpumask *affinity)
 { 
        spin_lock(&dp264_irq_lock);
-        cpu_set_irq_affinity(irq, affinity);
+        cpu_set_irq_affinity(irq, *affinity);
        tsunami_update_irq_hw(cached_irq_mask);
        spin_unlock(&dp264_irq_lock);
 }
 static void
-clipper_set_affinity(unsigned int irq, cpumask_t affinity)
+clipper_set_affinity(unsigned int irq, const struct cpumask *affinity)
 { 
        spin_lock(&dp264_irq_lock);
-        cpu_set_irq_affinity(irq - 16, affinity);
+        cpu_set_irq_affinity(irq - 16, *affinity);
        tsunami_update_irq_hw(cached_irq_mask);
        spin_unlock(&dp264_irq_lock);
 }
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 52c91ccc1648..27f840a4ad3d 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -158,10 +158,10 @@ titan_cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity)
 }
 static void
-titan_set_irq_affinity(unsigned int irq, cpumask_t affinity)
+titan_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
 { 
        spin_lock(&titan_irq_lock);
-        titan_cpu_set_irq_affinity(irq - 16, affinity);
+        titan_cpu_set_irq_affinity(irq - 16, *affinity);
        titan_update_irq_hw(titan_cached_irq_mask);
        spin_unlock(&titan_irq_lock);
 }
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index 7fc9860a97d7..c6884ba1d5ed 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -109,11 +109,11 @@ static void gic_unmask_irq(unsigned int irq)
 }
 #ifdef CONFIG_SMP
-static void gic_set_cpu(unsigned int irq, cpumask_t mask_val)
+static void gic_set_cpu(unsigned int irq, const struct cpumask *mask_val)
 {
        void __iomem *reg = gic_dist_base(irq) + GIC_DIST_TARGET + (gic_irq(irq) & ~3);
        unsigned int shift = (irq % 4) * 8;
-        unsigned int cpu = first_cpu(mask_val);
+        unsigned int cpu = cpumask_first(mask_val);
        u32 val;
        spin_lock(&irq_controller_lock);
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 2f3eb795fa6e..7141cee1fab7 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -174,7 +174,7 @@ static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
        pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->cpu, cpu);
        spin_lock_irq(&desc->lock);
-        desc->chip->set_affinity(irq, cpumask_of_cpu(cpu));
+        desc->chip->set_affinity(irq, cpumask_of(cpu));
        spin_unlock_irq(&desc->lock);
 }
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 019237d21622..55fa7ff96a3e 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -34,16 +34,6 @@
 #include <asm/ptrace.h>
 /*
- * bitmask of present and online CPUs.
- * The present bitmask indicates that the CPU is physically present.
- * The online bitmask indicates that the CPU is up and running.
- */
-cpumask_t cpu_possible_map;
-EXPORT_SYMBOL(cpu_possible_map);
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
-/*
 * as from 2.5, kernels no longer have an init_tasks structure
 * so we need some other way of telling a new secondary core
 * where to place its SVC stack
diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c
index d140eae53ded..1ff1bda0a894 100644
--- a/arch/arm/mach-at91/at91rm9200_time.c
+++ b/arch/arm/mach-at91/at91rm9200_time.c
@@ -178,7 +178,6 @@ static struct clock_event_device clkevt = {
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
        .shift          = 32,
        .rating         = 150,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = clkevt32k_next_event,
        .set_mode       = clkevt32k_mode,
 };
@@ -206,7 +205,7 @@ void __init at91rm9200_timer_init(void)
        clkevt.mult = div_sc(AT91_SLOW_CLOCK, NSEC_PER_SEC, clkevt.shift);
        clkevt.max_delta_ns = clockevent_delta2ns(AT91_ST_ALMV, &clkevt);
        clkevt.min_delta_ns = clockevent_delta2ns(2, &clkevt) + 1;
-        clkevt.cpumask = cpumask_of_cpu(0);
+        clkevt.cpumask = cpumask_of(0);
        clockevents_register_device(&clkevt);
        /* register clocksource */
diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index 122fd77ed580..b63e1d5f1bad 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -91,7 +91,6 @@ static struct clock_event_device pit_clkevt = {
        .features       = CLOCK_EVT_FEAT_PERIODIC,
        .shift          = 32,
        .rating         = 100,
-        .cpumask        = CPU_MASK_CPU0,
        .set_mode       = pit_clkevt_mode,
 };
@@ -173,6 +172,7 @@ static void __init at91sam926x_pit_init(void)
        /* Set up and register clockevents */
        pit_clkevt.mult = div_sc(pit_rate, NSEC_PER_SEC, pit_clkevt.shift);
+        pit_clkevt.cpumask = cpumask_of(0);
        clockevents_register_device(&pit_clkevt);
 }
diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c
index 3b9a296b5c4b..f8bcd29d17a6 100644
--- a/arch/arm/mach-davinci/time.c
+++ b/arch/arm/mach-davinci/time.c
@@ -322,7 +322,7 @@ static void __init davinci_timer_init(void)
        clockevent_davinci.min_delta_ns =
                clockevent_delta2ns(1, &clockevent_davinci);
-        clockevent_davinci.cpumask = cpumask_of_cpu(0);
+        clockevent_davinci.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_davinci);
 }
diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c
index a11765f5f23b..aff0ebcfa847 100644
--- a/arch/arm/mach-imx/time.c
+++ b/arch/arm/mach-imx/time.c
@@ -184,7 +184,7 @@ static int __init imx_clockevent_init(unsigned long rate)
        clockevent_imx.min_delta_ns =
                clockevent_delta2ns(0xf, &clockevent_imx);
-        clockevent_imx.cpumask = cpumask_of_cpu(0);
+        clockevent_imx.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_imx);
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 7766f469456b..f4656d2ac8a8 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -487,7 +487,7 @@ static int __init ixp4xx_clockevent_init(void)
                clockevent_delta2ns(0xfffffffe, &clockevent_ixp4xx);
        clockevent_ixp4xx.min_delta_ns =
                clockevent_delta2ns(0xf, &clockevent_ixp4xx);
-        clockevent_ixp4xx.cpumask = cpumask_of_cpu(0);
+        clockevent_ixp4xx.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_ixp4xx);
        return 0;
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 345a14cb73c3..444d9c0f5ca6 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -182,7 +182,7 @@ static void __init msm_timer_init(void)
                        clockevent_delta2ns(0xf0000000 >> clock->shift, ce);
                /* 4 gets rounded down to 3 */
                ce->min_delta_ns = clockevent_delta2ns(4, ce);
-                ce->cpumask = cpumask_of_cpu(0);
+                ce->cpumask = cpumask_of(0);
                cs->mult = clocksource_hz2mult(clock->freq, cs->shift);
                res = clocksource_register(cs);
diff --git a/arch/arm/mach-ns9xxx/time-ns9360.c b/arch/arm/mach-ns9xxx/time-ns9360.c
index a63424d083d9..41df69721769 100644
--- a/arch/arm/mach-ns9xxx/time-ns9360.c
+++ b/arch/arm/mach-ns9xxx/time-ns9360.c
@@ -173,7 +173,7 @@ static void __init ns9360_timer_init(void)
        ns9360_clockevent_device.min_delta_ns =
                clockevent_delta2ns(1, &ns9360_clockevent_device);
-        ns9360_clockevent_device.cpumask = cpumask_of_cpu(0);
+        ns9360_clockevent_device.cpumask = cpumask_of(0);
        clockevents_register_device(&ns9360_clockevent_device);
        setup_irq(IRQ_NS9360_TIMER0 + TIMER_CLOCKEVENT,
diff --git a/arch/arm/mach-omap1/time.c b/arch/arm/mach-omap1/time.c
index 2cf7e32bd293..495a32c287b4 100644
--- a/arch/arm/mach-omap1/time.c
+++ b/arch/arm/mach-omap1/time.c
@@ -173,7 +173,7 @@ static __init void omap_init_mpu_timer(unsigned long rate)
        clockevent_mpu_timer1.min_delta_ns =
                clockevent_delta2ns(1, &clockevent_mpu_timer1);
-        clockevent_mpu_timer1.cpumask = cpumask_of_cpu(0);
+        clockevent_mpu_timer1.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_mpu_timer1);
 }
diff --git a/arch/arm/mach-omap1/timer32k.c b/arch/arm/mach-omap1/timer32k.c
index 705367ece174..fd3f7396e162 100644
--- a/arch/arm/mach-omap1/timer32k.c
+++ b/arch/arm/mach-omap1/timer32k.c
@@ -187,7 +187,7 @@ static __init void omap_init_32k_timer(void)
        clockevent_32k_timer.min_delta_ns =
                clockevent_delta2ns(1, &clockevent_32k_timer);
-        clockevent_32k_timer.cpumask = cpumask_of_cpu(0);
+        clockevent_32k_timer.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_32k_timer);
 }
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
index 589393bedade..ae6036300f60 100644
--- a/arch/arm/mach-omap2/timer-gp.c
+++ b/arch/arm/mach-omap2/timer-gp.c
@@ -120,7 +120,7 @@ static void __init omap2_gp_clockevent_init(void)
        clockevent_gpt.min_delta_ns =
                clockevent_delta2ns(1, &clockevent_gpt);
-        clockevent_gpt.cpumask = cpumask_of_cpu(0);
+        clockevent_gpt.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_gpt);
 }
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 001624158519..95656a72268d 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -122,7 +122,6 @@ static struct clock_event_device ckevt_pxa_osmr0 = {
        .features       = CLOCK_EVT_FEAT_ONESHOT,
        .shift          = 32,
        .rating         = 200,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = pxa_osmr0_set_next_event,
        .set_mode       = pxa_osmr0_set_mode,
 };
@@ -163,6 +162,7 @@ static void __init pxa_timer_init(void)
                clockevent_delta2ns(0x7fffffff, &ckevt_pxa_osmr0);
        ckevt_pxa_osmr0.min_delta_ns =
                clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_pxa_osmr0) + 1;
+        ckevt_pxa_osmr0.cpumask = cpumask_of(0);
        cksrc_pxa_oscr0.mult =
                clocksource_hz2mult(clock_tick_rate, cksrc_pxa_oscr0.shift);
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 5f1d55963ced..bd2aa4f16141 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -624,7 +624,7 @@ static struct clock_event_device timer0_clockevent =	 {
        .set_mode       = timer_set_mode,
        .set_next_event = timer_set_next_event,
        .rating         = 300,
-        .cpumask        = CPU_MASK_ALL,
+        .cpumask        = cpu_all_mask,
 };
 static void __init realview_clockevents_init(unsigned int timer_irq)
diff --git a/arch/arm/mach-realview/localtimer.c b/arch/arm/mach-realview/localtimer.c
index 9019ef2e5611..67d6d9cc68b2 100644
--- a/arch/arm/mach-realview/localtimer.c
+++ b/arch/arm/mach-realview/localtimer.c
@@ -154,7 +154,7 @@ void __cpuinit local_timer_setup(void)
        clk->set_mode           = local_timer_set_mode;
        clk->set_next_event     = local_timer_set_next_event;
        clk->irq                = IRQ_LOCALTIMER;
-        clk->cpumask            = cpumask_of_cpu(cpu);
+        clk->cpumask            = cpumask_of(cpu);
        clk->shift              = 20;
        clk->mult               = div_sc(mpcore_timer_rate, NSEC_PER_SEC, clk->shift);
        clk->max_delta_ns       = clockevent_delta2ns(0xffffffff, clk);
@@ -193,7 +193,7 @@ void __cpuinit local_timer_setup(void)
        clk->rating             = 200;
        clk->set_mode           = dummy_timer_set_mode;
        clk->broadcast          = smp_timer_broadcast;
-        clk->cpumask            = cpumask_of_cpu(cpu);
+        clk->cpumask            = cpumask_of(cpu);
        clockevents_register_device(clk);
 }
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index 8c5e727f3b75..711c0295c66f 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -73,7 +73,6 @@ static struct clock_event_device ckevt_sa1100_osmr0 = {
        .features       = CLOCK_EVT_FEAT_ONESHOT,
        .shift          = 32,
        .rating         = 200,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = sa1100_osmr0_set_next_event,
        .set_mode       = sa1100_osmr0_set_mode,
 };
@@ -110,6 +109,7 @@ static void __init sa1100_timer_init(void)
                clockevent_delta2ns(0x7fffffff, &ckevt_sa1100_osmr0);
        ckevt_sa1100_osmr0.min_delta_ns =
                clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_sa1100_osmr0) + 1;
+        ckevt_sa1100_osmr0.cpumask = cpumask_of(0);
        cksrc_sa1100_oscr.mult =
                clocksource_hz2mult(CLOCK_TICK_RATE, cksrc_sa1100_oscr.shift);
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index df25aa138509..1c43494f5c42 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -1005,7 +1005,7 @@ static void __init versatile_timer_init(void)
        timer0_clockevent.min_delta_ns =
                clockevent_delta2ns(0xf, &timer0_clockevent);
-        timer0_clockevent.cpumask = cpumask_of_cpu(0);
+        timer0_clockevent.cpumask = cpumask_of(0);
        clockevents_register_device(&timer0_clockevent);
 }
diff --git a/arch/arm/oprofile/op_model_mpcore.c b/arch/arm/oprofile/op_model_mpcore.c
index 4de366e8b4c5..6d6bd5899240 100644
--- a/arch/arm/oprofile/op_model_mpcore.c
+++ b/arch/arm/oprofile/op_model_mpcore.c
@@ -260,10 +260,10 @@ static void em_stop(void)
 static void em_route_irq(int irq, unsigned int cpu)
 {
        struct irq_desc *desc = irq_desc + irq;
-        cpumask_t mask = cpumask_of_cpu(cpu);
+        const struct cpumask *mask = cpumask_of(cpu);
        spin_lock_irq(&desc->lock);
-        desc->affinity = mask;
+        desc->affinity = *mask;
        desc->chip->set_affinity(irq, mask);
        spin_unlock_irq(&desc->lock);
 }
diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
index fd28f5194f71..758a1293bcfa 100644
--- a/arch/arm/plat-mxc/time.c
+++ b/arch/arm/plat-mxc/time.c
@@ -190,7 +190,7 @@ static int __init mxc_clockevent_init(void)
        clockevent_mxc.min_delta_ns =
                        clockevent_delta2ns(0xff, &clockevent_mxc);
-        clockevent_mxc.cpumask = cpumask_of_cpu(0);
+        clockevent_mxc.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_mxc);
diff --git a/arch/arm/plat-orion/time.c b/arch/arm/plat-orion/time.c
index 544d6b327f3a..6fa2923e6dca 100644
--- a/arch/arm/plat-orion/time.c
+++ b/arch/arm/plat-orion/time.c
@@ -149,7 +149,6 @@ static struct clock_event_device orion_clkevt = {
        .features       = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
        .shift          = 32,
        .rating         = 300,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = orion_clkevt_next_event,
        .set_mode       = orion_clkevt_mode,
 };
@@ -199,5 +198,6 @@ void __init orion_time_init(unsigned int irq, unsigned int tclk)
        orion_clkevt.mult = div_sc(tclk, NSEC_PER_SEC, orion_clkevt.shift);
        orion_clkevt.max_delta_ns = clockevent_delta2ns(0xfffffffe, &orion_clkevt);
        orion_clkevt.min_delta_ns = clockevent_delta2ns(1, &orion_clkevt);
+        orion_clkevt.cpumask = cpumask_of(0);
        clockevents_register_device(&orion_clkevt);
 }
diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c
index 283481d74a5b..0ff46bf873b0 100644
--- a/arch/avr32/kernel/time.c
+++ b/arch/avr32/kernel/time.c
@@ -106,7 +106,6 @@ static struct clock_event_device comparator = {
        .features       = CLOCK_EVT_FEAT_ONESHOT,
        .shift          = 16,
        .rating         = 50,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = comparator_next_event,
        .set_mode       = comparator_mode,
 };
@@ -134,6 +133,7 @@ void __init time_init(void)
        comparator.mult = div_sc(counter_hz, NSEC_PER_SEC, comparator.shift);
        comparator.max_delta_ns = clockevent_delta2ns((u32)~0, &comparator);
        comparator.min_delta_ns = clockevent_delta2ns(50, &comparator) + 1;
+        comparator.cpumask = cpumask_of(0);
        sysreg_write(COMPARE, 0);
        timer_irqaction.dev_id = &comparator;
diff --git a/arch/blackfin/kernel/time-ts.c b/arch/blackfin/kernel/time-ts.c
index e887efc86c29..0ed2badfd746 100644
--- a/arch/blackfin/kernel/time-ts.c
+++ b/arch/blackfin/kernel/time-ts.c
@@ -162,7 +162,6 @@ static struct clock_event_device clockevent_bfin = {
        .name           = "bfin_core_timer",
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
        .shift          = 32,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = bfin_timer_set_next_event,
        .set_mode       = bfin_timer_set_mode,
 };
@@ -193,6 +192,7 @@ static int __init bfin_clockevent_init(void)
        clockevent_bfin.mult = div_sc(timer_clk, NSEC_PER_SEC, clockevent_bfin.shift);
        clockevent_bfin.max_delta_ns = clockevent_delta2ns(-1, &clockevent_bfin);
        clockevent_bfin.min_delta_ns = clockevent_delta2ns(100, &clockevent_bfin);
+        clockevent_bfin.cpumask = cpumask_of(0);
        clockevents_register_device(&clockevent_bfin);
        return 0;
diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c
index 173c141ac9ba..295131fee710 100644
--- a/arch/cris/arch-v32/kernel/irq.c
+++ b/arch/cris/arch-v32/kernel/irq.c
@@ -325,11 +325,11 @@ static void end_crisv32_irq(unsigned int irq)
 {
 }
-void set_affinity_crisv32_irq(unsigned int irq, cpumask_t dest)
+void set_affinity_crisv32_irq(unsigned int irq, const struct cpumask *dest)
 {
        unsigned long flags;
        spin_lock_irqsave(&irq_lock, flags);
-        irq_allocations[irq - FIRST_IRQ].mask = dest;
+        irq_allocations[irq - FIRST_IRQ].mask = *dest;
        spin_unlock_irqrestore(&irq_lock, flags);
 }
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 52e16c6436f9..9dac17334640 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -29,11 +29,7 @@
 spinlock_t cris_atomic_locks[] = { [0 ... LOCK_COUNT - 1] = SPIN_LOCK_UNLOCKED};
 /* CPU masks */
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_online_map);
 cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
-cpumask_t cpu_possible_map;
-EXPORT_SYMBOL(cpu_possible_map);
 EXPORT_SYMBOL(phys_cpu_present_map);
 /* Variables used during SMP boot */
diff --git a/arch/cris/include/asm/smp.h b/arch/cris/include/asm/smp.h
index dba33aba3e95..c615a06dd757 100644
--- a/arch/cris/include/asm/smp.h
+++ b/arch/cris/include/asm/smp.h
@@ -4,7 +4,6 @@
 #include <linux/cpumask.h>
 extern cpumask_t phys_cpu_present_map;
-extern cpumask_t cpu_possible_map;
 #define raw_smp_processor_id() (current_thread_info()->cpu)
diff --git a/arch/ia64/hp/sim/hpsim_irq.c b/arch/ia64/hp/sim/hpsim_irq.c
index c2f58ff364e7..cc0a3182db3c 100644
--- a/arch/ia64/hp/sim/hpsim_irq.c
+++ b/arch/ia64/hp/sim/hpsim_irq.c
@@ -22,7 +22,7 @@ hpsim_irq_noop (unsigned int irq)
 }
 static void
-hpsim_set_affinity_noop (unsigned int a, cpumask_t b)
+hpsim_set_affinity_noop(unsigned int a, const struct cpumask *b)
 {
 }
diff --git a/arch/ia64/include/asm/smp.h b/arch/ia64/include/asm/smp.h
index 12d96e0cd513..21c402365d0e 100644
--- a/arch/ia64/include/asm/smp.h
+++ b/arch/ia64/include/asm/smp.h
@@ -57,7 +57,6 @@ extern struct smp_boot_data {
 extern char no_int_routing __devinitdata;
-extern cpumask_t cpu_online_map;
 extern cpumask_t cpu_core_map[NR_CPUS];
 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
 extern int smp_num_siblings;
diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index 35bcb641c9e5..a3cc9f65f954 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -55,7 +55,6 @@
 void build_cpu_to_node_map(void);
 #define SD_CPU_INIT (struct sched_domain) {             \
-        .span                   = CPU_MASK_NONE,        \
        .parent                 = NULL,                 \
        .child                  = NULL,                 \
        .groups                 = NULL,                 \
@@ -80,7 +79,6 @@ void build_cpu_to_node_map(void);
 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
 #define SD_NODE_INIT (struct sched_domain) {            \
-        .span                   = CPU_MASK_NONE,        \
        .parent                 = NULL,                 \
        .child                  = NULL,                 \
        .groups                 = NULL,                 \
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 5c4674ae8aea..c8adecd5b416 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -330,25 +330,25 @@ unmask_irq (unsigned int irq)
 static void
-iosapic_set_affinity (unsigned int irq, cpumask_t mask)
+iosapic_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
 #ifdef CONFIG_SMP
        u32 high32, low32;
-        int dest, rte_index;
+        int cpu, dest, rte_index;
        int redir = (irq & IA64_IRQ_REDIRECTED) ? 1 : 0;
        struct iosapic_rte_info *rte;
        struct iosapic *iosapic;
        irq &= (~IA64_IRQ_REDIRECTED);
-        cpus_and(mask, mask, cpu_online_map);
+        cpu = cpumask_first_and(cpu_online_mask, mask);
-        if (cpus_empty(mask))
+        if (cpu >= nr_cpu_ids)
                return;
-        if (irq_prepare_move(irq, first_cpu(mask)))
+        if (irq_prepare_move(irq, cpu))
                return;
-        dest = cpu_physical_id(first_cpu(mask));
+        dest = cpu_physical_id(cpu);
        if (!iosapic_intr_info[irq].count)
                return;                 /* not an IOSAPIC interrupt */
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 7fd18f54c056..0b6db53fedcf 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -133,7 +133,6 @@ unsigned int vectors_in_migration[NR_IRQS];
 */
 static void migrate_irqs(void)
 {
-        cpumask_t       mask;
        irq_desc_t *desc;
        int             irq, new_cpu;
@@ -152,15 +151,14 @@ static void migrate_irqs(void)
                if (desc->status == IRQ_PER_CPU)
                        continue;
-                cpus_and(mask, irq_desc[irq].affinity, cpu_online_map);
+                if (cpumask_any_and(&irq_desc[irq].affinity, cpu_online_mask)
-                if (any_online_cpu(mask) == NR_CPUS) {
+                    >= nr_cpu_ids) {
                        /*
                         * Save it for phase 2 processing
                         */
                        vectors_in_migration[irq] = irq;
                        new_cpu = any_online_cpu(cpu_online_map);
-                        mask = cpumask_of_cpu(new_cpu);
                        /*
                         * Al three are essential, currently WARN_ON.. maybe panic?
@@ -168,7 +166,8 @@ static void migrate_irqs(void)
                        if (desc->chip && desc->chip->disable &&
                                desc->chip->enable && desc->chip->set_affinity) {
                                desc->chip->disable(irq);
-                                desc->chip->set_affinity(irq, mask);
+                                desc->chip->set_affinity(irq,
+                                                         cpumask_of(new_cpu));
                                desc->chip->enable(irq);
                        } else {
                                WARN_ON((!(desc->chip) || !(desc->chip->disable) ||
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 702a09c13238..890339339035 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -49,11 +49,12 @@
 static struct irq_chip  ia64_msi_chip;
 #ifdef CONFIG_SMP
-static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
+static void ia64_set_msi_irq_affinity(unsigned int irq,
+                                      const cpumask_t *cpu_mask)
 {
        struct msi_msg msg;
        u32 addr, data;
-        int cpu = first_cpu(cpu_mask);
+        int cpu = first_cpu(*cpu_mask);
        if (!cpu_online(cpu))
                return;
@@ -166,12 +167,11 @@ void arch_teardown_msi_irq(unsigned int irq)
 #ifdef CONFIG_DMAR
 #ifdef CONFIG_SMP
-static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
+static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_cfg *cfg = irq_cfg + irq;
        struct msi_msg msg;
-        int cpu = first_cpu(mask);
+        int cpu = cpumask_first(mask);
        if (!cpu_online(cpu))
                return;
@@ -187,7 +187,7 @@ static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
        msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
        dmar_msi_write(irq, &msg);
-        irq_desc[irq].affinity = mask;
+        irq_desc[irq].affinity = *mask;
 }
 #endif /* CONFIG_SMP */
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 1dcbb85fc4ee..11463994a7d5 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -131,12 +131,6 @@ struct task_struct *task_for_booting_cpu;
 */
 DEFINE_PER_CPU(int, cpu_state);
-/* Bitmasks of currently online, and possible CPUs */
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
-cpumask_t cpu_possible_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_possible_map);
 cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
 EXPORT_SYMBOL(cpu_core_map);
 DEFINE_PER_CPU_SHARED_ALIGNED(cpumask_t, cpu_sibling_map);
@@ -688,7 +682,7 @@ int migrate_platform_irqs(unsigned int cpu)
 {
        int new_cpei_cpu;
        irq_desc_t *desc = NULL;
-        cpumask_t       mask;
+        const struct cpumask *mask;
        int             retval = 0;
        /*
@@ -701,7 +695,7 @@ int migrate_platform_irqs(unsigned int cpu)
                         * Now re-target the CPEI to a different processor
                         */
                        new_cpei_cpu = any_online_cpu(cpu_online_map);
-                        mask = cpumask_of_cpu(new_cpei_cpu);
+                        mask = cpumask_of(new_cpei_cpu);
                        set_cpei_target_cpu(new_cpei_cpu);
                        desc = irq_desc + ia64_cpe_irq;
                        /*
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index c75b914f2d6b..a8d61a3e9a94 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -219,7 +219,7 @@ static ssize_t show_shared_cpu_map(struct cache_info *this_leaf, char *buf)
        cpumask_t shared_cpu_map;
        cpus_and(shared_cpu_map, this_leaf->shared_cpu_map, cpu_online_map);
-        len = cpumask_scnprintf(buf, NR_CPUS+1, shared_cpu_map);
+        len = cpumask_scnprintf(buf, NR_CPUS+1, &shared_cpu_map);
        len += sprintf(buf+len, "\n");
        return len;
 }
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 0c66dbdd1d72..66fd705e82c0 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -227,14 +227,14 @@ finish_up:
        return new_irq_info;
 }
-static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
+static void sn_set_affinity_irq(unsigned int irq, const struct cpumask *mask)
 {
        struct sn_irq_info *sn_irq_info, *sn_irq_info_safe;
        nasid_t nasid;
        int slice;
-        nasid = cpuid_to_nasid(first_cpu(mask));
+        nasid = cpuid_to_nasid(cpumask_first(mask));
-        slice = cpuid_to_slice(first_cpu(mask));
+        slice = cpuid_to_slice(cpumask_first(mask));
        list_for_each_entry_safe(sn_irq_info, sn_irq_info_safe,
                                 sn_irq_lh[irq], list)
diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c
index 83f190ffe350..ca553b0429ce 100644
--- a/arch/ia64/sn/kernel/msi_sn.c
+++ b/arch/ia64/sn/kernel/msi_sn.c
@@ -151,7 +151,8 @@ int sn_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *entry)
 }
 #ifdef CONFIG_SMP
-static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
+static void sn_set_msi_irq_affinity(unsigned int irq,
+                                    const struct cpumask *cpu_mask)
 {
        struct msi_msg msg;
        int slice;
@@ -164,7 +165,7 @@ static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
        struct sn_pcibus_provider *provider;
        unsigned int cpu;
-        cpu = first_cpu(cpu_mask);
+        cpu = cpumask_first(cpu_mask);
        sn_irq_info = sn_msi_info[irq].sn_irq_info;
        if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0)
                return;
@@ -204,7 +205,7 @@ static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
        msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff);
        write_msi_msg(irq, &msg);
-        irq_desc[irq].affinity = cpu_mask;
+        irq_desc[irq].affinity = *cpu_mask;
 }
 #endif /* CONFIG_SMP */
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 29047d5c259a..cabba332cc48 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -10,6 +10,7 @@ config M32R
        default y
        select HAVE_IDE
        select HAVE_OPROFILE
+        select INIT_ALL_POSSIBLE
 config SBUS
        bool
diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c
index 39cb6da72dcb..0f06b3722e96 100644
--- a/arch/m32r/kernel/smpboot.c
+++ b/arch/m32r/kernel/smpboot.c
@@ -73,17 +73,11 @@ static unsigned int bsp_phys_id = -1;
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map;
-/* Bitmask of currently online CPUs */
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
 cpumask_t cpu_bootout_map;
 cpumask_t cpu_bootin_map;
 static cpumask_t cpu_callin_map;
 cpumask_t cpu_callout_map;
 EXPORT_SYMBOL(cpu_callout_map);
-cpumask_t cpu_possible_map = CPU_MASK_ALL;
-EXPORT_SYMBOL(cpu_possible_map);
 /* Per CPU bogomips and other parameters */
 struct cpuinfo_m32r cpu_data[NR_CPUS] __cacheline_aligned;
diff --git a/arch/m68knommu/platform/coldfire/pit.c b/arch/m68knommu/platform/coldfire/pit.c
index c5b916700b22..2a12e7fa9748 100644
--- a/arch/m68knommu/platform/coldfire/pit.c
+++ b/arch/m68knommu/platform/coldfire/pit.c
@@ -156,7 +156,7 @@ void hw_timer_init(void)
 {
        u32 imr;
-        cf_pit_clockevent.cpumask = cpumask_of_cpu(smp_processor_id());
+        cf_pit_clockevent.cpumask = cpumask_of(smp_processor_id());
        cf_pit_clockevent.mult = div_sc(FREQ, NSEC_PER_SEC, 32);
        cf_pit_clockevent.max_delta_ns =
                clockevent_delta2ns(0xFFFF, &cf_pit_clockevent);
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index a58f0eecc68f..abc62aa744ac 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -49,7 +49,8 @@ static inline void smtc_im_ack_irq(unsigned int irq)
 #ifdef CONFIG_MIPS_MT_SMTC_IRQAFF
 #include <linux/cpumask.h>
-extern void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity);
+extern void plat_set_irq_affinity(unsigned int irq,
+                                  const struct cpumask *affinity);
 extern void smtc_forward_irq(unsigned int irq);
 /*
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index 7785bec732f2..1fb959f98982 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -37,7 +37,6 @@ extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES];
 /* sched_domains SD_NODE_INIT for SGI IP27 machines */
 #define SD_NODE_INIT (struct sched_domain) {            \
-        .span                   = CPU_MASK_NONE,        \
        .parent                 = NULL,                 \
        .child                  = NULL,                 \
        .groups                 = NULL,                 \
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index 0ff5b523ea77..86557b5d1b3f 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -38,9 +38,6 @@ extern int __cpu_logical_map[NR_CPUS];
 #define SMP_RESCHEDULE_YOURSELF 0x1     /* XXX braindead */
 #define SMP_CALL_FUNCTION       0x2
-extern cpumask_t phys_cpu_present_map;
-#define cpu_possible_map        phys_cpu_present_map
 extern void asmlinkage smp_bootstrap(void);
 /*
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index d7f8a782aae4..03965cb1b252 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -146,7 +146,7 @@ void __init plat_time_init(void)
        BUG_ON(HZ != 100);
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        clockevents_register_device(cd);
        action->dev_id = cd;
        setup_irq(JAZZ_TIMER_IRQ, action);
diff --git a/arch/mips/kernel/cevt-bcm1480.c b/arch/mips/kernel/cevt-bcm1480.c
index 0a57f86945f1..b820661678b0 100644
--- a/arch/mips/kernel/cevt-bcm1480.c
+++ b/arch/mips/kernel/cevt-bcm1480.c
@@ -126,7 +126,7 @@ void __cpuinit sb1480_clockevent_init(void)
        cd->min_delta_ns        = clockevent_delta2ns(2, cd);
        cd->rating              = 200;
        cd->irq                 = irq;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = sibyte_next_event;
        cd->set_mode            = sibyte_set_mode;
        clockevents_register_device(cd);
@@ -148,6 +148,6 @@ void __cpuinit sb1480_clockevent_init(void)
        action->name    = name;
        action->dev_id  = cd;
-        irq_set_affinity(irq, cpumask_of_cpu(cpu));
+        irq_set_affinity(irq, cpumask_of(cpu));
        setup_irq(irq, action);
 }
diff --git a/arch/mips/kernel/cevt-ds1287.c b/arch/mips/kernel/cevt-ds1287.c
index df4acb68bfb5..1ada45ea0700 100644
--- a/arch/mips/kernel/cevt-ds1287.c
+++ b/arch/mips/kernel/cevt-ds1287.c
@@ -88,7 +88,6 @@ static void ds1287_event_handler(struct clock_event_device *dev)
 static struct clock_event_device ds1287_clockevent = {
        .name           = "ds1287",
        .features       = CLOCK_EVT_FEAT_PERIODIC,
-        .cpumask        = CPU_MASK_CPU0,
        .set_next_event = ds1287_set_next_event,
        .set_mode       = ds1287_set_mode,
        .event_handler  = ds1287_event_handler,
@@ -122,6 +121,7 @@ int __init ds1287_clockevent_init(int irq)
        clockevent_set_clock(cd, 32768);
        cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
        cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
+        cd->cpumask = cpumask_of(0);
        clockevents_register_device(&ds1287_clockevent);
diff --git a/arch/mips/kernel/cevt-gt641xx.c b/arch/mips/kernel/cevt-gt641xx.c
index 6e2f58520afb..e9b787feedcb 100644
--- a/arch/mips/kernel/cevt-gt641xx.c
+++ b/arch/mips/kernel/cevt-gt641xx.c
@@ -96,7 +96,6 @@ static void gt641xx_timer0_event_handler(struct clock_event_device *dev)
 static struct clock_event_device gt641xx_timer0_clockevent = {
        .name           = "gt641xx-timer0",
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-        .cpumask        = CPU_MASK_CPU0,
        .irq            = GT641XX_TIMER0_IRQ,
        .set_next_event = gt641xx_timer0_set_next_event,
        .set_mode       = gt641xx_timer0_set_mode,
@@ -132,6 +131,7 @@ static int __init gt641xx_timer0_clockevent_init(void)
        clockevent_set_clock(cd, gt641xx_base_clock);
        cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd);
        cd->min_delta_ns = clockevent_delta2ns(0x300, cd);
+        cd->cpumask = cpumask_of(0);
        clockevents_register_device(&gt641xx_timer0_clockevent);
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index 4a4c59f2737a..e1ec83b68031 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -195,7 +195,7 @@ int __cpuinit mips_clockevent_init(void)
        cd->rating              = 300;
        cd->irq                 = irq;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = mips_next_event;
        cd->set_mode            = mips_set_clock_mode;
        cd->event_handler       = mips_event_handler;
diff --git a/arch/mips/kernel/cevt-sb1250.c b/arch/mips/kernel/cevt-sb1250.c
index 63ac3ad462bc..a2eebaafda52 100644
--- a/arch/mips/kernel/cevt-sb1250.c
+++ b/arch/mips/kernel/cevt-sb1250.c
@@ -125,7 +125,7 @@ void __cpuinit sb1250_clockevent_init(void)
        cd->min_delta_ns        = clockevent_delta2ns(2, cd);
        cd->rating              = 200;
        cd->irq                 = irq;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = sibyte_next_event;
        cd->set_mode            = sibyte_set_mode;
        clockevents_register_device(cd);
@@ -147,6 +147,6 @@ void __cpuinit sb1250_clockevent_init(void)
        action->name    = name;
        action->dev_id  = cd;
-        irq_set_affinity(irq, cpumask_of_cpu(cpu));
+        irq_set_affinity(irq, cpumask_of(cpu));
        setup_irq(irq, action);
 }
diff --git a/arch/mips/kernel/cevt-smtc.c b/arch/mips/kernel/cevt-smtc.c
index 5162fe4b5952..6d45e24db5bf 100644
--- a/arch/mips/kernel/cevt-smtc.c
+++ b/arch/mips/kernel/cevt-smtc.c
@@ -292,7 +292,7 @@ int __cpuinit mips_clockevent_init(void)
        cd->rating              = 300;
        cd->irq                 = irq;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = mips_next_event;
        cd->set_mode            = mips_set_clock_mode;
        cd->event_handler       = mips_event_handler;
diff --git a/arch/mips/kernel/cevt-txx9.c b/arch/mips/kernel/cevt-txx9.c
index b5fc4eb412d2..eccf7d6096bd 100644
--- a/arch/mips/kernel/cevt-txx9.c
+++ b/arch/mips/kernel/cevt-txx9.c
@@ -112,7 +112,6 @@ static struct clock_event_device txx9tmr_clock_event_device = {
        .name           = "TXx9",
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
        .rating         = 200,
-        .cpumask        = CPU_MASK_CPU0,
        .set_mode       = txx9tmr_set_mode,
        .set_next_event = txx9tmr_set_next_event,
 };
@@ -150,6 +149,7 @@ void __init txx9_clockevent_init(unsigned long baseaddr, int irq,
                clockevent_delta2ns(0xffffffff >> (32 - TXX9_TIMER_BITS), cd);
        cd->min_delta_ns = clockevent_delta2ns(0xf, cd);
        cd->irq = irq;
+        cd->cpumask = cpumask_of(0),
        clockevents_register_device(cd);
        setup_irq(irq, &txx9tmr_irq);
        printk(KERN_INFO "TXx9: clockevent device at 0x%lx, irq %d\n",
diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c
index b6ac55162b9a..f4d187825f96 100644
--- a/arch/mips/kernel/i8253.c
+++ b/arch/mips/kernel/i8253.c
@@ -115,7 +115,7 @@ void __init setup_pit_timer(void)
         * Start pit with the boot cpu mask and make it global after the
         * IO_APIC has been initialized.
         */
-        cd->cpumask = cpumask_of_cpu(cpu);
+        cd->cpumask = cpumask_of(cpu);
        clockevent_set_clock(cd, CLOCK_TICK_RATE);
        cd->max_delta_ns = clockevent_delta2ns(0x7FFF, cd);
        cd->min_delta_ns = clockevent_delta2ns(0xF, cd);
diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c
index f0a4bb19e096..494a49a317e9 100644
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -155,7 +155,7 @@ static void gic_unmask_irq(unsigned int irq)
 static DEFINE_SPINLOCK(gic_lock);
-static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
+static void gic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 {
        cpumask_t       tmp = CPU_MASK_NONE;
        unsigned long   flags;
@@ -164,7 +164,7 @@ static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
        pr_debug(KERN_DEBUG "%s called\n", __func__);
        irq -= _irqbase;
-        cpus_and(tmp, cpumask, cpu_online_map);
+        cpumask_and(&tmp, cpumask, cpu_online_mask);
        if (cpus_empty(tmp))
                return;
@@ -187,7 +187,7 @@ static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
                set_bit(irq, pcpu_masks[first_cpu(tmp)].pcpu_mask);
        }
-        irq_desc[irq].affinity = cpumask;
+        irq_desc[irq].affinity = *cpumask;
        spin_unlock_irqrestore(&gic_lock, flags);
 }
diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index ca476c4f62a5..f27beca4b26d 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -51,10 +51,10 @@ static int __init allowcpus(char *str)
        int len;
        cpus_clear(cpu_allow_map);
-        if (cpulist_parse(str, cpu_allow_map) == 0) {
+        if (cpulist_parse(str, &cpu_allow_map) == 0) {
                cpu_set(0, cpu_allow_map);
                cpus_and(cpu_possible_map, cpu_possible_map, cpu_allow_map);
-                len = cpulist_scnprintf(buf, sizeof(buf)-1, cpu_possible_map);
+                len = cpulist_scnprintf(buf, sizeof(buf)-1, &cpu_possible_map);
                buf[len] = '\0';
                pr_debug("Allowable CPUs: %s\n", buf);
                return 1;
@@ -226,7 +226,7 @@ void __init cmp_smp_setup(void)
        for (i = 1; i < NR_CPUS; i++) {
                if (amon_cpu_avail(i)) {
-                        cpu_set(i, phys_cpu_present_map);
+                        cpu_set(i, cpu_possible_map);
                        __cpu_number_map[i]     = ++ncpu;
                        __cpu_logical_map[ncpu] = i;
                }
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 87a1816c1f45..6f7ee5ac46ee 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -70,7 +70,7 @@ static unsigned int __init smvp_vpe_init(unsigned int tc, unsigned int mvpconf0,
                write_vpe_c0_vpeconf0(tmp);
                /* Record this as available CPU */
-                cpu_set(tc, phys_cpu_present_map);
+                cpu_set(tc, cpu_possible_map);
                __cpu_number_map[tc]    = ++ncpu;
                __cpu_logical_map[ncpu] = tc;
        }
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 8bf88faf5afd..3da94704f816 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -44,15 +44,10 @@
 #include <asm/mipsmtregs.h>
 #endif /* CONFIG_MIPS_MT_SMTC */
-cpumask_t phys_cpu_present_map;         /* Bitmask of available CPUs */
 volatile cpumask_t cpu_callin_map;      /* Bitmask of started secondaries */
-cpumask_t cpu_online_map;               /* Bitmask of currently online CPUs */
 int __cpu_number_map[NR_CPUS];          /* Map physical to logical */
 int __cpu_logical_map[NR_CPUS];         /* Map logical to physical */
-EXPORT_SYMBOL(phys_cpu_present_map);
-EXPORT_SYMBOL(cpu_online_map);
 extern void cpu_idle(void);
 /* Number of TCs (or siblings in Intel speak) per CPU core */
@@ -195,7 +190,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 /* preload SMP state for boot cpu */
 void __devinit smp_prepare_boot_cpu(void)
 {
-        cpu_set(0, phys_cpu_present_map);
+        cpu_set(0, cpu_possible_map);
        cpu_set(0, cpu_online_map);
        cpu_set(0, cpu_callin_map);
 }
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 897fb2b4751c..b6cca01ff82b 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -290,7 +290,7 @@ static void smtc_configure_tlb(void)
 * possibly leave some TCs/VPEs as "slave" processors.
 *
 * Use c0_MVPConf0 to find out how many TCs are available, setting up
- * phys_cpu_present_map and the logical/physical mappings.
+ * cpu_possible_map and the logical/physical mappings.
 */
 int __init smtc_build_cpu_map(int start_cpu_slot)
@@ -304,7 +304,7 @@ int __init smtc_build_cpu_map(int start_cpu_slot)
         */
        ntcs = ((read_c0_mvpconf0() & MVPCONF0_PTC) >> MVPCONF0_PTC_SHIFT) + 1;
        for (i=start_cpu_slot; i<NR_CPUS && i<ntcs; i++) {
-                cpu_set(i, phys_cpu_present_map);
+                cpu_set(i, cpu_possible_map);
                __cpu_number_map[i] = i;
                __cpu_logical_map[i] = i;
        }
@@ -521,7 +521,7 @@ void smtc_prepare_cpus(int cpus)
         * Pull any physically present but unused TCs out of circulation.
         */
        while (tc < (((val & MVPCONF0_PTC) >> MVPCONF0_PTC_SHIFT) + 1)) {
-                cpu_clear(tc, phys_cpu_present_map);
+                cpu_clear(tc, cpu_possible_map);
                cpu_clear(tc, cpu_present_map);
                tc++;
        }
diff --git a/arch/mips/mti-malta/malta-smtc.c b/arch/mips/mti-malta/malta-smtc.c
index f84a46a8ae6e..aabd7274507b 100644
--- a/arch/mips/mti-malta/malta-smtc.c
+++ b/arch/mips/mti-malta/malta-smtc.c
@@ -114,9 +114,9 @@ struct plat_smp_ops msmtc_smp_ops = {
 */
-void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity)
+void plat_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
 {
-        cpumask_t tmask = affinity;
+        cpumask_t tmask = *affinity;
        int cpu = 0;
        void smtc_set_irq_affinity(unsigned int irq, cpumask_t aff);
@@ -139,7 +139,7 @@ void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity)
         * be made to forward to an offline "CPU".
         */
-        for_each_cpu_mask(cpu, affinity) {
+        for_each_cpu(cpu, affinity) {
                if ((cpu_data[cpu].vpe_id != 0) || !cpu_online(cpu))
                        cpu_clear(cpu, tmask);
        }
diff --git a/arch/mips/nxp/pnx8550/common/time.c b/arch/mips/nxp/pnx8550/common/time.c
index 62f495b57f93..cf293b279098 100644
--- a/arch/mips/nxp/pnx8550/common/time.c
+++ b/arch/mips/nxp/pnx8550/common/time.c
@@ -102,6 +102,7 @@ __init void plat_time_init(void)
        unsigned int p;
        unsigned int pow2p;
+        pnx8xxx_clockevent.cpumask = cpu_none_mask;
        clockevents_register_device(&pnx8xxx_clockevent);
        clocksource_register(&pnx_clocksource);
diff --git a/arch/mips/pmc-sierra/yosemite/smp.c b/arch/mips/pmc-sierra/yosemite/smp.c
index 3a7df647ca77..f78c29b68d77 100644
--- a/arch/mips/pmc-sierra/yosemite/smp.c
+++ b/arch/mips/pmc-sierra/yosemite/smp.c
@@ -141,7 +141,7 @@ static void __cpuinit yos_boot_secondary(int cpu, struct task_struct *idle)
 }
 /*
- * Detect available CPUs, populate phys_cpu_present_map before smp_init
+ * Detect available CPUs, populate cpu_possible_map before smp_init
 *
 * We don't want to start the secondary CPU yet nor do we have a nice probing
 * feature in PMON so we just assume presence of the secondary core.
@@ -150,10 +150,10 @@ static void __init yos_smp_setup(void)
 {
        int i;
-        cpus_clear(phys_cpu_present_map);
+        cpus_clear(cpu_possible_map);
        for (i = 0; i < 2; i++) {
-                cpu_set(i, phys_cpu_present_map);
+                cpu_set(i, cpu_possible_map);
                __cpu_number_map[i]     = i;
                __cpu_logical_map[i]    = i;
        }
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index ba5cdebeaf0d..5b47d6b65275 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -76,7 +76,7 @@ static int do_cpumask(cnodeid_t cnode, nasid_t nasid, int highest)
                        /* Only let it join in if it's marked enabled */
                        if ((acpu->cpu_info.flags & KLINFO_ENABLE) &&
                            (tot_cpus_found != NR_CPUS)) {
-                                cpu_set(cpuid, phys_cpu_present_map);
+                                cpu_set(cpuid, cpu_possible_map);
                                alloc_cpupda(cpuid, tot_cpus_found);
                                cpus_found++;
                                tot_cpus_found++;
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 1327c2746fb7..f024057a35f8 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -134,7 +134,7 @@ void __cpuinit hub_rt_clock_event_init(void)
        cd->min_delta_ns        = clockevent_delta2ns(0x300, cd);
        cd->rating              = 200;
        cd->irq                 = irq;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = rt_next_event;
        cd->set_mode            = rt_set_mode;
        clockevents_register_device(cd);
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index a35818ed4263..12b465d404df 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -50,7 +50,7 @@ static void enable_bcm1480_irq(unsigned int irq);
 static void disable_bcm1480_irq(unsigned int irq);
 static void ack_bcm1480_irq(unsigned int irq);
 #ifdef CONFIG_SMP
-static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask);
+static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask);
 #endif
 #ifdef CONFIG_PCI
@@ -109,7 +109,7 @@ void bcm1480_unmask_irq(int cpu, int irq)
 }
 #ifdef CONFIG_SMP
-static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask)
+static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
        int i = 0, old_cpu, cpu, int_on, k;
        u64 cur_ints;
@@ -117,11 +117,11 @@ static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask)
        unsigned long flags;
        unsigned int irq_dirty;
-        if (cpus_weight(mask) != 1) {
+        if (cpumask_weight(mask) != 1) {
                printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
                return;
        }
-        i = first_cpu(mask);
+        i = cpumask_first(mask);
        /* Convert logical CPU to physical CPU */
        cpu = cpu_logical_map(i);
diff --git a/arch/mips/sibyte/bcm1480/smp.c b/arch/mips/sibyte/bcm1480/smp.c
index bd9eeb43ed0e..dddfda8e8294 100644
--- a/arch/mips/sibyte/bcm1480/smp.c
+++ b/arch/mips/sibyte/bcm1480/smp.c
@@ -136,7 +136,7 @@ static void __cpuinit bcm1480_boot_secondary(int cpu, struct task_struct *idle)
 /*
 * Use CFE to find out how many CPUs are available, setting up
- * phys_cpu_present_map and the logical/physical mappings.
+ * cpu_possible_map and the logical/physical mappings.
 * XXXKW will the boot CPU ever not be physical 0?
 *
 * Common setup before any secondaries are started
@@ -145,14 +145,14 @@ static void __init bcm1480_smp_setup(void)
 {
        int i, num;
-        cpus_clear(phys_cpu_present_map);
+        cpus_clear(cpu_possible_map);
-        cpu_set(0, phys_cpu_present_map);
+        cpu_set(0, cpu_possible_map);
        __cpu_number_map[0] = 0;
        __cpu_logical_map[0] = 0;
        for (i = 1, num = 0; i < NR_CPUS; i++) {
                if (cfe_cpu_stop(i) == 0) {
-                        cpu_set(i, phys_cpu_present_map);
+                        cpu_set(i, cpu_possible_map);
                        __cpu_number_map[i] = ++num;
                        __cpu_logical_map[num] = i;
                }
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index a5158483986e..808ac2959b8c 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -50,7 +50,7 @@ static void enable_sb1250_irq(unsigned int irq);
 static void disable_sb1250_irq(unsigned int irq);
 static void ack_sb1250_irq(unsigned int irq);
 #ifdef CONFIG_SMP
-static void sb1250_set_affinity(unsigned int irq, cpumask_t mask);
+static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask);
 #endif
 #ifdef CONFIG_SIBYTE_HAS_LDT
@@ -103,16 +103,16 @@ void sb1250_unmask_irq(int cpu, int irq)
 }
 #ifdef CONFIG_SMP
-static void sb1250_set_affinity(unsigned int irq, cpumask_t mask)
+static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
        int i = 0, old_cpu, cpu, int_on;
        u64 cur_ints;
        struct irq_desc *desc = irq_desc + irq;
        unsigned long flags;
-        i = first_cpu(mask);
+        i = cpumask_first(mask);
-        if (cpus_weight(mask) > 1) {
+        if (cpumask_weight(mask) > 1) {
                printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
                return;
        }
diff --git a/arch/mips/sibyte/sb1250/smp.c b/arch/mips/sibyte/sb1250/smp.c
index 0734b933e969..5950a288a7da 100644
--- a/arch/mips/sibyte/sb1250/smp.c
+++ b/arch/mips/sibyte/sb1250/smp.c
@@ -124,7 +124,7 @@ static void __cpuinit sb1250_boot_secondary(int cpu, struct task_struct *idle)
 /*
 * Use CFE to find out how many CPUs are available, setting up
- * phys_cpu_present_map and the logical/physical mappings.
+ * cpu_possible_map and the logical/physical mappings.
 * XXXKW will the boot CPU ever not be physical 0?
 *
 * Common setup before any secondaries are started
@@ -133,14 +133,14 @@ static void __init sb1250_smp_setup(void)
 {
        int i, num;
-        cpus_clear(phys_cpu_present_map);
+        cpus_clear(cpu_possible_map);
-        cpu_set(0, phys_cpu_present_map);
+        cpu_set(0, cpu_possible_map);
        __cpu_number_map[0] = 0;
        __cpu_logical_map[0] = 0;
        for (i = 1, num = 0; i < NR_CPUS; i++) {
                if (cfe_cpu_stop(i) == 0) {
-                        cpu_set(i, phys_cpu_present_map);
+                        cpu_set(i, cpu_possible_map);
                        __cpu_number_map[i] = ++num;
                        __cpu_logical_map[num] = i;
                }
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index 796e3ce28720..69f5f88711cc 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -80,7 +80,7 @@ static void __init sni_a20r_timer_setup(void)
        struct irqaction *action = &a20r_irqaction;
        unsigned int cpu = smp_processor_id();
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        clockevents_register_device(cd);
        action->dev_id = cd;
        setup_irq(SNI_A20R_IRQ_TIMER, &a20r_irqaction);
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 644a70b1b04e..aacf11d33723 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -11,6 +11,7 @@ config PARISC
        select HAVE_OPROFILE
        select RTC_CLASS
        select RTC_DRV_PARISC
+        select INIT_ALL_POSSIBLE
        help
          The PA-RISC microprocessor is designed by Hewlett-Packard and used
          in many of their workstations & servers (HP9000 700 and 800 series,
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 23ef950df008..4cea935e2f99 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -131,12 +131,12 @@ int cpu_check_affinity(unsigned int irq, cpumask_t *dest)
        return 0;
 }
-static void cpu_set_affinity_irq(unsigned int irq, cpumask_t dest)
+static void cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
 {
-        if (cpu_check_affinity(irq, &dest))
+        if (cpu_check_affinity(irq, dest))
                return;
-        irq_desc[irq].affinity = dest;
+        irq_desc[irq].affinity = *dest;
 }
 #endif
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index d47f3975c9c6..80bc000523fa 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -67,21 +67,6 @@ static volatile int cpu_now_booting __read_mostly = 0;	/* track which CPU is boo
 static int parisc_max_cpus __read_mostly = 1;
-/* online cpus are ones that we've managed to bring up completely
- * possible cpus are all valid cpu 
- * present cpus are all detected cpu
- *
- * On startup we bring up the "possible" cpus. Since we discover
- * CPUs later, we add them as hotplug, so the possible cpu mask is
- * empty in the beginning.
- */
-cpumask_t cpu_online_map   __read_mostly = CPU_MASK_NONE;       /* Bitmap of online CPUs */
-cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;        /* Bitmap of Present CPUs */
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_possible_map);
 DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
 enum ipi_message_type {
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index c32da6f97999..373fca394a54 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -48,7 +48,6 @@ static inline int pcibus_to_node(struct pci_bus *bus)
 /* sched_domains SD_NODE_INIT for PPC64 machines */
 #define SD_NODE_INIT (struct sched_domain) {            \
-        .span                   = CPU_MASK_NONE,        \
        .parent                 = NULL,                 \
        .child                  = NULL,                 \
        .groups                 = NULL,                 \
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index ac222d0ab12e..23b8b5e36f98 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -237,7 +237,7 @@ void fixup_irqs(cpumask_t map)
                        mask = map;
                }
                if (irq_desc[irq].chip->set_affinity)
-                        irq_desc[irq].chip->set_affinity(irq, mask);
+                        irq_desc[irq].chip->set_affinity(irq, &mask);
                else if (irq_desc[irq].action && !(warned++))
                        printk("Cannot set affinity for irq %i\n", irq);
        }
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 8ac3f721d235..65484b2200b3 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -59,13 +59,9 @@
 struct thread_info *secondary_ti;
-cpumask_t cpu_possible_map = CPU_MASK_NONE;
-cpumask_t cpu_online_map = CPU_MASK_NONE;
 DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
 DEFINE_PER_CPU(cpumask_t, cpu_core_map) = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_possible_map);
 EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
 EXPORT_PER_CPU_SYMBOL(cpu_core_map);
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index e1f3a5140429..99f1ddd68582 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -844,7 +844,7 @@ static void register_decrementer_clockevent(int cpu)
        struct clock_event_device *dec = &per_cpu(decrementers, cpu).event;
        *dec = decrementer_clockevent;
-        dec->cpumask = cpumask_of_cpu(cpu);
+        dec->cpumask = cpumask_of(cpu);
        printk(KERN_DEBUG "clockevent: %s mult[%lx] shift[%d] cpu[%d]\n",
               dec->name, dec->mult, dec->shift, cpu);
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index f7a69021b7bf..84e058f1e1cc 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -332,7 +332,7 @@ static void xics_eoi_lpar(unsigned int virq)
        lpar_xirr_info_set((0xff << 24) | irq);
 }
-static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
+static void xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 {
        unsigned int irq;
        int status;
@@ -870,7 +870,7 @@ void xics_migrate_irqs_away(void)
                /* Reset affinity to all cpus */
                irq_desc[virq].affinity = CPU_MASK_ALL;
-                desc->chip->set_affinity(virq, CPU_MASK_ALL);
+                desc->chip->set_affinity(virq, cpu_all_mask);
 unlock:
                spin_unlock_irqrestore(&desc->lock, flags);
        }
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index c82babb70074..3e0d89dcdba2 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -806,7 +806,7 @@ static void mpic_end_ipi(unsigned int irq)
 #endif /* CONFIG_SMP */
-void mpic_set_affinity(unsigned int irq, cpumask_t cpumask)
+void mpic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 {
        struct mpic *mpic = mpic_from_irq(irq);
        unsigned int src = mpic_irq_to_hw(irq);
@@ -818,7 +818,7 @@ void mpic_set_affinity(unsigned int irq, cpumask_t cpumask)
        } else {
                cpumask_t tmp;
-                cpus_and(tmp, cpumask, cpu_online_map);
+                cpumask_and(&tmp, cpumask, cpu_online_mask);
                mpic_irq_write(src, MPIC_INFO(IRQ_DESTINATION),
                               mpic_physmask(cpus_addr(tmp)[0]));
diff --git a/arch/powerpc/sysdev/mpic.h b/arch/powerpc/sysdev/mpic.h
index 6209c62a426d..3cef2af10f42 100644
--- a/arch/powerpc/sysdev/mpic.h
+++ b/arch/powerpc/sysdev/mpic.h
@@ -36,6 +36,6 @@ static inline int mpic_pasemi_msi_init(struct mpic *mpic)
 extern int mpic_set_irq_type(unsigned int virq, unsigned int flow_type);
 extern void mpic_set_vector(unsigned int virq, unsigned int vector);
-extern void mpic_set_affinity(unsigned int irq, cpumask_t cpumask);
+extern void mpic_set_affinity(unsigned int irq, const struct cpumask *cpumask);
 #endif /* _POWERPC_SYSDEV_MPIC_H */
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 8152fefc97b9..19577aeffd7b 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -83,6 +83,7 @@ config S390
        select HAVE_KRETPROBES
        select HAVE_KVM if 64BIT
        select HAVE_ARCH_TRACEHOOK
+        select INIT_ALL_POSSIBLE
 source "init/Kconfig"
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 6fc78541dc57..3ed5c7a83c6c 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -55,12 +55,6 @@
 struct _lowcore *lowcore_ptr[NR_CPUS];
 EXPORT_SYMBOL(lowcore_ptr);
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_online_map);
-cpumask_t cpu_possible_map = CPU_MASK_ALL;
-EXPORT_SYMBOL(cpu_possible_map);
 static struct task_struct *current_set[NR_CPUS];
 static u8 smp_cpu_type;
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 5be981a36c3e..d649600df5b9 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -160,7 +160,7 @@ void init_cpu_timer(void)
        cd->min_delta_ns        = 1;
        cd->max_delta_ns        = LONG_MAX;
        cd->rating              = 400;
-        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->cpumask             = cpumask_of(cpu);
        cd->set_next_event      = s390_next_event;
        cd->set_mode            = s390_set_mode;
diff --git a/arch/sh/include/asm/smp.h b/arch/sh/include/asm/smp.h
index 85b660c17eb0..c24e9c6a1736 100644
--- a/arch/sh/include/asm/smp.h
+++ b/arch/sh/include/asm/smp.h
@@ -31,7 +31,7 @@ enum {
 };
 void smp_message_recv(unsigned int msg);
-void smp_timer_broadcast(cpumask_t mask);
+void smp_timer_broadcast(const struct cpumask *mask);
 void local_timer_interrupt(void);
 void local_timer_setup(unsigned int cpu);
diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h
index 95f0085e098a..279d9cc4a007 100644
--- a/arch/sh/include/asm/topology.h
+++ b/arch/sh/include/asm/topology.h
@@ -5,7 +5,6 @@
 /* sched_domains SD_NODE_INIT for sh machines */
 #define SD_NODE_INIT (struct sched_domain) {            \
-        .span                   = CPU_MASK_NONE,        \
        .parent                 = NULL,                 \
        .child                  = NULL,                 \
        .groups                 = NULL,                 \
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 3c5ad1660bbc..8f4027412614 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -31,12 +31,6 @@
 int __cpu_number_map[NR_CPUS];          /* Map physical to logical */
 int __cpu_logical_map[NR_CPUS];         /* Map logical to physical */
-cpumask_t cpu_possible_map;
-EXPORT_SYMBOL(cpu_possible_map);
-cpumask_t cpu_online_map;
-EXPORT_SYMBOL(cpu_online_map);
 static inline void __init smp_store_cpu_info(unsigned int cpu)
 {
        struct sh_cpuinfo *c = cpu_data + cpu;
@@ -190,11 +184,11 @@ void arch_send_call_function_single_ipi(int cpu)
        plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
 }
-void smp_timer_broadcast(cpumask_t mask)
+void smp_timer_broadcast(const struct cpumask *mask)
 {
        int cpu;
-        for_each_cpu_mask(cpu, mask)
+        for_each_cpu(cpu, mask)
                plat_send_ipi(cpu, SMP_MSG_TIMER);
 }
diff --git a/arch/sh/kernel/timers/timer-broadcast.c b/arch/sh/kernel/timers/timer-broadcast.c
index c2317635230f..96e8eaea1e62 100644
--- a/arch/sh/kernel/timers/timer-broadcast.c
+++ b/arch/sh/kernel/timers/timer-broadcast.c
@@ -51,7 +51,7 @@ void __cpuinit local_timer_setup(unsigned int cpu)
        clk->mult               = 1;
        clk->set_mode           = dummy_timer_set_mode;
        clk->broadcast          = smp_timer_broadcast;
-        clk->cpumask            = cpumask_of_cpu(cpu);
+        clk->cpumask            = cpumask_of(cpu);
        clockevents_register_device(clk);
 }
diff --git a/arch/sh/kernel/timers/timer-tmu.c b/arch/sh/kernel/timers/timer-tmu.c
index 3c61ddd4d43e..0db3f9510336 100644
--- a/arch/sh/kernel/timers/timer-tmu.c
+++ b/arch/sh/kernel/timers/timer-tmu.c
@@ -263,7 +263,7 @@ static int tmu_timer_init(void)
        tmu0_clockevent.min_delta_ns =
                        clockevent_delta2ns(1, &tmu0_clockevent);
-        tmu0_clockevent.cpumask = cpumask_of_cpu(0);
+        tmu0_clockevent.cpumask = cpumask_of(0);
        clockevents_register_device(&tmu0_clockevent);
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h
index a8180e546a48..8408d9d2a662 100644
--- a/arch/sparc/include/asm/smp_32.h
+++ b/arch/sparc/include/asm/smp_32.h
@@ -29,8 +29,6 @@
 */
 extern unsigned char boot_cpu_id;
-extern cpumask_t phys_cpu_present_map;
-#define cpu_possible_map phys_cpu_present_map
 typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long,
                       unsigned long, unsigned long);
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index a3ea2bcb95de..cab8e0286871 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -312,7 +312,8 @@ static void sun4u_irq_enable(unsigned int virt_irq)
        }
 }
-static void sun4u_set_affinity(unsigned int virt_irq, cpumask_t mask)
+static void sun4u_set_affinity(unsigned int virt_irq,
+                               const struct cpumask *mask)
 {
        sun4u_irq_enable(virt_irq);
 }
@@ -362,7 +363,8 @@ static void sun4v_irq_enable(unsigned int virt_irq)
                       ino, err);
 }
-static void sun4v_set_affinity(unsigned int virt_irq, cpumask_t mask)
+static void sun4v_set_affinity(unsigned int virt_irq,
+                               const struct cpumask *mask)
 {
        unsigned int ino = virt_irq_table[virt_irq].dev_ino;
        unsigned long cpuid = irq_choose_cpu(virt_irq);
@@ -429,7 +431,8 @@ static void sun4v_virq_enable(unsigned int virt_irq)
                       dev_handle, dev_ino, err);
 }
-static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
+static void sun4v_virt_set_affinity(unsigned int virt_irq,
+                                    const struct cpumask *mask)
 {
        unsigned long cpuid, dev_handle, dev_ino;
        int err;
@@ -851,7 +854,7 @@ void fixup_irqs(void)
                    !(irq_desc[irq].status & IRQ_PER_CPU)) {
                        if (irq_desc[irq].chip->set_affinity)
                                irq_desc[irq].chip->set_affinity(irq,
-                                        irq_desc[irq].affinity);
+                                        &irq_desc[irq].affinity);
                }
                spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
        }
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
index 46e231f7c5ce..322046cdf85f 100644
--- a/arch/sparc/kernel/of_device_64.c
+++ b/arch/sparc/kernel/of_device_64.c
@@ -780,7 +780,7 @@ out:
        if (nid != -1) {
                cpumask_t numa_mask = node_to_cpumask(nid);
-                irq_set_affinity(irq, numa_mask);
+                irq_set_affinity(irq, &numa_mask);
        }
        return irq;
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
index 2e680f34f727..0d0cd815e83e 100644
--- a/arch/sparc/kernel/pci_msi.c
+++ b/arch/sparc/kernel/pci_msi.c
@@ -288,7 +288,7 @@ static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
        if (nid != -1) {
                cpumask_t numa_mask = node_to_cpumask(nid);
-                irq_set_affinity(irq, numa_mask);
+                irq_set_affinity(irq, &numa_mask);
        }
        err = request_irq(irq, sparc64_msiq_interrupt, 0,
                          "MSIQ",
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index e396c1f17a92..1e5ac4e282e1 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -39,8 +39,6 @@ volatile unsigned long cpu_callin_map[NR_CPUS] __cpuinitdata = {0,};
 unsigned char boot_cpu_id = 0;
 unsigned char boot_cpu_id4 = 0; /* boot_cpu_id << 2 */
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
 cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 /* The only guaranteed locking primitive available on all Sparc
@@ -334,7 +332,7 @@ void __init smp_setup_cpu_possible_map(void)
        instance = 0;
        while (!cpu_find_by_instance(instance, NULL, &mid)) {
                if (mid < NR_CPUS) {
-                        cpu_set(mid, phys_cpu_present_map);
+                        cpu_set(mid, cpu_possible_map);
                        cpu_set(mid, cpu_present_map);
                }
                instance++;
@@ -354,7 +352,7 @@ void __init smp_prepare_boot_cpu(void)
        current_thread_info()->cpu = cpuid;
        cpu_set(cpuid, cpu_online_map);
-        cpu_set(cpuid, phys_cpu_present_map);
+        cpu_set(cpuid, cpu_possible_map);
 }
 int __cpuinit __cpu_up(unsigned int cpu)
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index bfe99d82d458..46329799f346 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -49,14 +49,10 @@
 int sparc64_multi_core __read_mostly;
-cpumask_t cpu_possible_map __read_mostly = CPU_MASK_NONE;
-cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE;
 DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
 cpumask_t cpu_core_map[NR_CPUS] __read_mostly =
        { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
-EXPORT_SYMBOL(cpu_possible_map);
-EXPORT_SYMBOL(cpu_online_map);
 EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
 EXPORT_SYMBOL(cpu_core_map);
diff --git a/arch/sparc/kernel/sparc_ksyms_32.c b/arch/sparc/kernel/sparc_ksyms_32.c
index a4d45fc29b21..e1e97639231b 100644
--- a/arch/sparc/kernel/sparc_ksyms_32.c
+++ b/arch/sparc/kernel/sparc_ksyms_32.c
@@ -112,10 +112,6 @@ EXPORT_PER_CPU_SYMBOL(__cpu_data);
 #ifdef CONFIG_SMP
 /* IRQ implementation. */
 EXPORT_SYMBOL(synchronize_irq);
-/* CPU online map and active count. */
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(phys_cpu_present_map);
 #endif
 EXPORT_SYMBOL(__udelay);
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index 141da3759091..9df8f095a8b1 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -763,7 +763,7 @@ void __devinit setup_sparc64_timer(void)
        sevt = &__get_cpu_var(sparc64_events);
        memcpy(sevt, &sparc64_clockevent, sizeof(*sevt));
-        sevt->cpumask = cpumask_of_cpu(smp_processor_id());
+        sevt->cpumask = cpumask_of(smp_processor_id());
        clockevents_register_device(sevt);
 }
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index 045772142844..98351c78bc81 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -25,13 +25,6 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 #include "irq_user.h"
 #include "os.h"
-/* CPU online map, set by smp_boot_cpus */
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-cpumask_t cpu_possible_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_online_map);
-EXPORT_SYMBOL(cpu_possible_map);
 /* Per CPU bogomips and other parameters
 * The only piece used here is the ipi pipe, which is set before SMP is
 * started and never changed.
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index 47f04f4a3464..b13a87a3ec95 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -50,7 +50,7 @@ static int itimer_next_event(unsigned long delta,
 static struct clock_event_device itimer_clockevent = {
        .name           = "itimer",
        .rating         = 250,
-        .cpumask        = CPU_MASK_ALL,
+        .cpumask        = cpu_all_mask,
        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
        .set_mode       = itimer_set_mode,
        .set_next_event = itimer_next_event,
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0f44add3e0b7..249d1e0824b5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -601,19 +601,20 @@ config IOMMU_HELPER
 config MAXSMP
        bool "Configure Maximum number of SMP Processors and NUMA Nodes"
-        depends on X86_64 && SMP && BROKEN
+        depends on X86_64 && SMP && DEBUG_KERNEL && EXPERIMENTAL
+        select CPUMASK_OFFSTACK
        default n
        help
          Configure maximum number of CPUS and NUMA Nodes for this architecture.
          If unsure, say N.
 config NR_CPUS
-        int "Maximum number of CPUs (2-512)" if !MAXSMP
+        int "Maximum number of CPUs" if SMP && !MAXSMP
-        range 2 512
+        range 2 512 if SMP && !MAXSMP
-        depends on SMP
+        default "1" if !SMP
        default "4096" if MAXSMP
-        default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
+        default "32" if SMP && (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000)
-        default "8"
+        default "8" if SMP
        help
          This allows you to specify the maximum number of CPUs which this
          kernel will support.  The maximum supported value is 512 and the
diff --git a/arch/x86/include/asm/bigsmp/apic.h b/arch/x86/include/asm/bigsmp/apic.h
index ce547f24a1cd..d8dd9f537911 100644
--- a/arch/x86/include/asm/bigsmp/apic.h
+++ b/arch/x86/include/asm/bigsmp/apic.h
@@ -9,12 +9,12 @@ static inline int apic_id_registered(void)
        return (1);
 }
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
 {
 #ifdef CONFIG_SMP
-        return cpu_online_map;
+        return &cpu_online_map;
 #else
-        return cpumask_of_cpu(0);
+        return &cpumask_of_cpu(0);
 #endif
 }
@@ -79,7 +79,7 @@ static inline int apicid_to_node(int logical_apicid)
 static inline int cpu_present_to_apicid(int mps_cpu)
 {
-        if (mps_cpu < NR_CPUS)
+        if (mps_cpu < nr_cpu_ids)
                return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
        return BAD_APICID;
@@ -94,7 +94,7 @@ extern u8 cpu_2_logical_apicid[];
 /* Mapping from cpu number to logical apicid */
 static inline int cpu_to_logical_apicid(int cpu)
 {
-        if (cpu >= NR_CPUS)
+        if (cpu >= nr_cpu_ids)
                return BAD_APICID;
        return cpu_physical_id(cpu);
 }
@@ -119,16 +119,34 @@ static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
 }
 /* As we are using single CPU as destination, pick only one CPU here */
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
 {
        int cpu;
        int apicid;     
-        cpu = first_cpu(cpumask);
+        cpu = first_cpu(*cpumask);
        apicid = cpu_to_logical_apicid(cpu);
        return apicid;
 }
+static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                  const struct cpumask *andmask)
+{
+        int cpu;
+        /*
+         * We're using fixed IRQ delivery, can only return one phys APIC ID.
+         * May as well be the first.
+         */
+        for_each_cpu_and(cpu, cpumask, andmask)
+                if (cpumask_test_cpu(cpu, cpu_online_mask))
+                        break;
+        if (cpu < nr_cpu_ids)
+                return cpu_to_logical_apicid(cpu);
+        return BAD_APICID;
+}
 static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
 {
        return cpuid_apic >> index_msb;
diff --git a/arch/x86/include/asm/bigsmp/ipi.h b/arch/x86/include/asm/bigsmp/ipi.h
index 9404c535b7ec..27fcd01b3ae6 100644
--- a/arch/x86/include/asm/bigsmp/ipi.h
+++ b/arch/x86/include/asm/bigsmp/ipi.h
@@ -1,25 +1,22 @@
 #ifndef __ASM_MACH_IPI_H
 #define __ASM_MACH_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const struct cpumask *mask, int vector)
 {
        send_IPI_mask_sequence(mask, vector);
 }
 static inline void send_IPI_allbutself(int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        send_IPI_mask_allbutself(cpu_online_mask, vector);
-        cpu_clear(smp_processor_id(), mask);
-        if (!cpus_empty(mask))
-                send_IPI_mask(mask, vector);
 }
 static inline void send_IPI_all(int vector)
 {
-        send_IPI_mask(cpu_online_map, vector);
+        send_IPI_mask(cpu_online_mask, vector);
 }
 #endif /* __ASM_MACH_IPI_H */
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
index e6b82b17b072..dc27705f5443 100644
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -320,16 +320,14 @@ static inline void set_intr_gate(unsigned int n, void *addr)
        _set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS);
 }
-#define SYS_VECTOR_FREE         0
-#define SYS_VECTOR_ALLOCED      1
 extern int first_system_vector;
-extern char system_vectors[];
+/* used_vectors is BITMAP for irq is not managed by percpu vector_irq */
+extern unsigned long used_vectors[];
 static inline void alloc_system_vector(int vector)
 {
-        if (system_vectors[vector] == SYS_VECTOR_FREE) {
+        if (!test_bit(vector, used_vectors)) {
-                system_vectors[vector] = SYS_VECTOR_ALLOCED;
+                set_bit(vector, used_vectors);
                if (first_system_vector > vector)
                        first_system_vector = vector;
        } else
diff --git a/arch/x86/include/asm/es7000/apic.h b/arch/x86/include/asm/es7000/apic.h
index e24ef876915f..51ac1230294e 100644
--- a/arch/x86/include/asm/es7000/apic.h
+++ b/arch/x86/include/asm/es7000/apic.h
@@ -9,14 +9,14 @@ static inline int apic_id_registered(void)
                return (1);
 }
-static inline cpumask_t target_cpus_cluster(void)
+static inline const cpumask_t *target_cpus_cluster(void)
 {
-        return CPU_MASK_ALL;
+        return &CPU_MASK_ALL;
 }
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
 {
-        return cpumask_of_cpu(smp_processor_id());
+        return &cpumask_of_cpu(smp_processor_id());
 }
 #define APIC_DFR_VALUE_CLUSTER          (APIC_DFR_CLUSTER)
@@ -80,9 +80,10 @@ extern int apic_version [MAX_APICS];
 static inline void setup_apic_routing(void)
 {
        int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
-        printk("Enabling APIC mode:  %s.  Using %d I/O APICs, target cpus %lx\n",
+        printk("Enabling APIC mode:  %s. Using %d I/O APICs, target cpus %lx\n",
                (apic_version[apic] == 0x14) ?
-                "Physical Cluster" : "Logical Cluster", nr_ioapics, cpus_addr(target_cpus())[0]);
+                        "Physical Cluster" : "Logical Cluster",
+                        nr_ioapics, cpus_addr(*target_cpus())[0]);
 }
 static inline int multi_timer_check(int apic, int irq)
@@ -100,7 +101,7 @@ static inline int cpu_present_to_apicid(int mps_cpu)
 {
        if (!mps_cpu)
                return boot_cpu_physical_apicid;
-        else if (mps_cpu < NR_CPUS)
+        else if (mps_cpu < nr_cpu_ids)
                return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
        else
                return BAD_APICID;
@@ -120,9 +121,9 @@ extern u8 cpu_2_logical_apicid[];
 static inline int cpu_to_logical_apicid(int cpu)
 {
 #ifdef CONFIG_SMP
-       if (cpu >= NR_CPUS)
+        if (cpu >= nr_cpu_ids)
-               return BAD_APICID;
+                return BAD_APICID;
-       return (int)cpu_2_logical_apicid[cpu];
+        return (int)cpu_2_logical_apicid[cpu];
 #else
        return logical_smp_processor_id();
 #endif
@@ -146,14 +147,15 @@ static inline int check_phys_apicid_present(int cpu_physical_apicid)
        return (1);
 }
-static inline unsigned int cpu_mask_to_apicid_cluster(cpumask_t cpumask)
+static inline unsigned int
+cpu_mask_to_apicid_cluster(const struct cpumask *cpumask)
 {
        int num_bits_set;
        int cpus_found = 0;
        int cpu;
        int apicid;
-        num_bits_set = cpus_weight(cpumask);
+        num_bits_set = cpumask_weight(cpumask);
        /* Return id to all */
        if (num_bits_set == NR_CPUS)
                return 0xFF;
@@ -161,10 +163,10 @@ static inline unsigned int cpu_mask_to_apicid_cluster(cpumask_t cpumask)
         * The cpus in the mask must all be on the apic cluster.  If are not
         * on the same apicid cluster return default value of TARGET_CPUS.
         */
-        cpu = first_cpu(cpumask);
+        cpu = cpumask_first(cpumask);
        apicid = cpu_to_logical_apicid(cpu);
        while (cpus_found < num_bits_set) {
-                if (cpu_isset(cpu, cpumask)) {
+                if (cpumask_test_cpu(cpu, cpumask)) {
                        int new_apicid = cpu_to_logical_apicid(cpu);
                        if (apicid_cluster(apicid) !=
                                        apicid_cluster(new_apicid)){
@@ -179,14 +181,14 @@ static inline unsigned int cpu_mask_to_apicid_cluster(cpumask_t cpumask)
        return apicid;
 }
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
 {
        int num_bits_set;
        int cpus_found = 0;
        int cpu;
        int apicid;
-        num_bits_set = cpus_weight(cpumask);
+        num_bits_set = cpus_weight(*cpumask);
        /* Return id to all */
        if (num_bits_set == NR_CPUS)
                return cpu_to_logical_apicid(0);
@@ -194,10 +196,52 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
         * The cpus in the mask must all be on the apic cluster.  If are not
         * on the same apicid cluster return default value of TARGET_CPUS.
         */
-        cpu = first_cpu(cpumask);
+        cpu = first_cpu(*cpumask);
+        apicid = cpu_to_logical_apicid(cpu);
+        while (cpus_found < num_bits_set) {
+                if (cpu_isset(cpu, *cpumask)) {
+                        int new_apicid = cpu_to_logical_apicid(cpu);
+                        if (apicid_cluster(apicid) !=
+                                        apicid_cluster(new_apicid)){
+                                printk ("%s: Not a valid mask!\n", __func__);
+                                return cpu_to_logical_apicid(0);
+                        }
+                        apicid = new_apicid;
+                        cpus_found++;
+                }
+                cpu++;
+        }
+        return apicid;
+}
+static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *inmask,
+                                                  const struct cpumask *andmask)
+{
+        int num_bits_set;
+        int cpus_found = 0;
+        int cpu;
+        int apicid = cpu_to_logical_apicid(0);
+        cpumask_var_t cpumask;
+        if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
+                return apicid;
+        cpumask_and(cpumask, inmask, andmask);
+        cpumask_and(cpumask, cpumask, cpu_online_mask);
+        num_bits_set = cpumask_weight(cpumask);
+        /* Return id to all */
+        if (num_bits_set == NR_CPUS)
+                goto exit;
+        /*
+         * The cpus in the mask must all be on the apic cluster.  If are not
+         * on the same apicid cluster return default value of TARGET_CPUS.
+         */
+        cpu = cpumask_first(cpumask);
        apicid = cpu_to_logical_apicid(cpu);
        while (cpus_found < num_bits_set) {
-                if (cpu_isset(cpu, cpumask)) {
+                if (cpumask_test_cpu(cpu, cpumask)) {
                        int new_apicid = cpu_to_logical_apicid(cpu);
                        if (apicid_cluster(apicid) !=
                                        apicid_cluster(new_apicid)){
@@ -209,6 +253,8 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
                }
                cpu++;
        }
+exit:
+        free_cpumask_var(cpumask);
        return apicid;
 }
diff --git a/arch/x86/include/asm/es7000/ipi.h b/arch/x86/include/asm/es7000/ipi.h
index 632a955fcc0a..7e8ed24d4b8a 100644
--- a/arch/x86/include/asm/es7000/ipi.h
+++ b/arch/x86/include/asm/es7000/ipi.h
@@ -1,24 +1,22 @@
 #ifndef __ASM_ES7000_IPI_H
 #define __ASM_ES7000_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const struct cpumask *mask, int vector)
 {
        send_IPI_mask_sequence(mask, vector);
 }
 static inline void send_IPI_allbutself(int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        send_IPI_mask_allbutself(cpu_online_mask, vector);
-        cpu_clear(smp_processor_id(), mask);
-        if (!cpus_empty(mask))
-                send_IPI_mask(mask, vector);
 }
 static inline void send_IPI_all(int vector)
 {
-        send_IPI_mask(cpu_online_map, vector);
+        send_IPI_mask(cpu_online_mask, vector);
 }
 #endif /* __ASM_ES7000_IPI_H */
diff --git a/arch/x86/include/asm/genapic_32.h b/arch/x86/include/asm/genapic_32.h
index 0ac17d33a8c7..746f37a7963a 100644
--- a/arch/x86/include/asm/genapic_32.h
+++ b/arch/x86/include/asm/genapic_32.h
@@ -24,7 +24,7 @@ struct genapic {
        int (*probe)(void);
        int (*apic_id_registered)(void);
-        cpumask_t (*target_cpus)(void);
+        const struct cpumask *(*target_cpus)(void);
        int int_delivery_mode;
        int int_dest_mode;
        int ESR_DISABLE;
@@ -57,12 +57,16 @@ struct genapic {
        unsigned (*get_apic_id)(unsigned long x);
        unsigned long apic_id_mask;
-        unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
+        unsigned int (*cpu_mask_to_apicid)(const struct cpumask *cpumask);
-        cpumask_t (*vector_allocation_domain)(int cpu);
+        unsigned int (*cpu_mask_to_apicid_and)(const struct cpumask *cpumask,
+                                               const struct cpumask *andmask);
+        void (*vector_allocation_domain)(int cpu, struct cpumask *retmask);
 #ifdef CONFIG_SMP
        /* ipi */
-        void (*send_IPI_mask)(cpumask_t mask, int vector);
+        void (*send_IPI_mask)(const struct cpumask *mask, int vector);
+        void (*send_IPI_mask_allbutself)(const struct cpumask *mask,
+                                         int vector);
        void (*send_IPI_allbutself)(int vector);
        void (*send_IPI_all)(int vector);
 #endif
@@ -114,6 +118,7 @@ struct genapic {
        APICFUNC(get_apic_id)                           \
        .apic_id_mask = APIC_ID_MASK,                   \
        APICFUNC(cpu_mask_to_apicid)                    \
+        APICFUNC(cpu_mask_to_apicid_and)                \
        APICFUNC(vector_allocation_domain)              \
        APICFUNC(acpi_madt_oem_check)                   \
        IPIFUNC(send_IPI_mask)                          \
diff --git a/arch/x86/include/asm/genapic_64.h b/arch/x86/include/asm/genapic_64.h
index 2cae011668b7..adf32fb56aa6 100644
--- a/arch/x86/include/asm/genapic_64.h
+++ b/arch/x86/include/asm/genapic_64.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_X86_GENAPIC_64_H
 #define _ASM_X86_GENAPIC_64_H
+#include <linux/cpumask.h>
 /*
 * Copyright 2004 James Cleverdon, IBM.
 * Subject to the GNU Public License, v.2
@@ -18,16 +20,20 @@ struct genapic {
        u32 int_delivery_mode;
        u32 int_dest_mode;
        int (*apic_id_registered)(void);
-        cpumask_t (*target_cpus)(void);
+        const struct cpumask *(*target_cpus)(void);
-        cpumask_t (*vector_allocation_domain)(int cpu);
+        void (*vector_allocation_domain)(int cpu, struct cpumask *retmask);
        void (*init_apic_ldr)(void);
        /* ipi */
-        void (*send_IPI_mask)(cpumask_t mask, int vector);
+        void (*send_IPI_mask)(const struct cpumask *mask, int vector);
+        void (*send_IPI_mask_allbutself)(const struct cpumask *mask,
+                                         int vector);
        void (*send_IPI_allbutself)(int vector);
        void (*send_IPI_all)(int vector);
        void (*send_IPI_self)(int vector);
        /* */
-        unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
+        unsigned int (*cpu_mask_to_apicid)(const struct cpumask *cpumask);
+        unsigned int (*cpu_mask_to_apicid_and)(const struct cpumask *cpumask,
+                                               const struct cpumask *andmask);
        unsigned int (*phys_pkg_id)(int index_msb);
        unsigned int (*get_apic_id)(unsigned long x);
        unsigned long (*set_apic_id)(unsigned int id);
diff --git a/arch/x86/include/asm/ipi.h b/arch/x86/include/asm/ipi.h
index f89dffb28aa9..c745a306f7d3 100644
--- a/arch/x86/include/asm/ipi.h
+++ b/arch/x86/include/asm/ipi.h
@@ -117,7 +117,8 @@ static inline void __send_IPI_dest_field(unsigned int mask, int vector,
        native_apic_mem_write(APIC_ICR, cfg);
 }
-static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
+static inline void send_IPI_mask_sequence(const struct cpumask *mask,
+                                          int vector)
 {
        unsigned long flags;
        unsigned long query_cpu;
@@ -128,11 +129,29 @@ static inline void send_IPI_mask_sequence(cpumask_t mask, int vector)
         * - mbligh
         */
        local_irq_save(flags);
-        for_each_cpu_mask_nr(query_cpu, mask) {
+        for_each_cpu(query_cpu, mask) {
                __send_IPI_dest_field(per_cpu(x86_cpu_to_apicid, query_cpu),
                                      vector, APIC_DEST_PHYSICAL);
        }
        local_irq_restore(flags);
 }
+static inline void send_IPI_mask_allbutself(const struct cpumask *mask,
+                                            int vector)
+{
+        unsigned long flags;
+        unsigned int query_cpu;
+        unsigned int this_cpu = smp_processor_id();
+        /* See Hack comment above */
+        local_irq_save(flags);
+        for_each_cpu(query_cpu, mask)
+                if (query_cpu != this_cpu)
+                        __send_IPI_dest_field(
+                                per_cpu(x86_cpu_to_apicid, query_cpu),
+                                vector, APIC_DEST_PHYSICAL);
+        local_irq_restore(flags);
+}
 #endif /* _ASM_X86_IPI_H */
diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index 28e409fc73f3..592688ed04d3 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -33,7 +33,7 @@ static inline int irq_canonicalize(int irq)
 #ifdef CONFIG_HOTPLUG_CPU
 #include <linux/cpumask.h>
-extern void fixup_irqs(cpumask_t map);
+extern void fixup_irqs(void);
 #endif
 extern unsigned int do_IRQ(struct pt_regs *regs);
@@ -42,5 +42,6 @@ extern void native_init_IRQ(void);
 /* Interrupt vector management */
 extern DECLARE_BITMAP(used_vectors, NR_VECTORS);
+extern int vector_used_by_percpu_irq(unsigned int vector);
 #endif /* _ASM_X86_IRQ_H */
diff --git a/arch/x86/include/asm/mach-default/mach_apic.h b/arch/x86/include/asm/mach-default/mach_apic.h
index 6cb3a467e067..cc09cbbee27e 100644
--- a/arch/x86/include/asm/mach-default/mach_apic.h
+++ b/arch/x86/include/asm/mach-default/mach_apic.h
@@ -8,12 +8,12 @@
 #define APIC_DFR_VALUE  (APIC_DFR_FLAT)
-static inline cpumask_t target_cpus(void)
+static inline const struct cpumask *target_cpus(void)
 { 
 #ifdef CONFIG_SMP
-        return cpu_online_map;
+        return cpu_online_mask;
 #else
-        return cpumask_of_cpu(0);
+        return cpumask_of(0);
 #endif
 } 
@@ -28,6 +28,7 @@ static inline cpumask_t target_cpus(void)
 #define apic_id_registered (genapic->apic_id_registered)
 #define init_apic_ldr (genapic->init_apic_ldr)
 #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid)
+#define cpu_mask_to_apicid_and (genapic->cpu_mask_to_apicid_and)
 #define phys_pkg_id     (genapic->phys_pkg_id)
 #define vector_allocation_domain    (genapic->vector_allocation_domain)
 #define read_apic_id()  (GET_APIC_ID(apic_read(APIC_ID)))
@@ -61,9 +62,19 @@ static inline int apic_id_registered(void)
        return physid_isset(read_apic_id(), phys_cpu_present_map);
 }
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
-        return cpus_addr(cpumask)[0];
+        return cpumask_bits(cpumask)[0];
+}
+static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                  const struct cpumask *andmask)
+{
+        unsigned long mask1 = cpumask_bits(cpumask)[0];
+        unsigned long mask2 = cpumask_bits(andmask)[0];
+        unsigned long mask3 = cpumask_bits(cpu_online_mask)[0];
+        return (unsigned int)(mask1 & mask2 & mask3);
 }
 static inline u32 phys_pkg_id(u32 cpuid_apic, int index_msb)
@@ -88,7 +99,7 @@ static inline int apicid_to_node(int logical_apicid)
 #endif
 }
-static inline cpumask_t vector_allocation_domain(int cpu)
+static inline void vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
        /* Careful. Some cpus do not strictly honor the set of cpus
         * specified in the interrupt destination when using lowest
@@ -98,8 +109,7 @@ static inline cpumask_t vector_allocation_domain(int cpu)
         * deliver interrupts to the wrong hyperthread when only one
         * hyperthread was specified in the interrupt desitination.
         */
-        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
-        return domain;
 }
 #endif
@@ -131,7 +141,7 @@ static inline int cpu_to_logical_apicid(int cpu)
 static inline int cpu_present_to_apicid(int mps_cpu)
 {
-        if (mps_cpu < NR_CPUS && cpu_present(mps_cpu))
+        if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
                return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
        else
                return BAD_APICID;
diff --git a/arch/x86/include/asm/mach-default/mach_ipi.h b/arch/x86/include/asm/mach-default/mach_ipi.h
index fabca01ebacf..191312d155da 100644
--- a/arch/x86/include/asm/mach-default/mach_ipi.h
+++ b/arch/x86/include/asm/mach-default/mach_ipi.h
@@ -4,7 +4,8 @@
 /* Avoid include hell */
 #define NMI_VECTOR 0x02
-void send_IPI_mask_bitmask(cpumask_t mask, int vector);
+void send_IPI_mask_bitmask(const struct cpumask *mask, int vector);
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
 void __send_IPI_shortcut(unsigned int shortcut, int vector);
 extern int no_broadcast;
@@ -12,28 +13,27 @@ extern int no_broadcast;
 #ifdef CONFIG_X86_64
 #include <asm/genapic.h>
 #define send_IPI_mask (genapic->send_IPI_mask)
+#define send_IPI_mask_allbutself (genapic->send_IPI_mask_allbutself)
 #else
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const struct cpumask *mask, int vector)
 {
        send_IPI_mask_bitmask(mask, vector);
 }
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
 #endif
 static inline void __local_send_IPI_allbutself(int vector)
 {
-        if (no_broadcast || vector == NMI_VECTOR) {
+        if (no_broadcast || vector == NMI_VECTOR)
-                cpumask_t mask = cpu_online_map;
+                send_IPI_mask_allbutself(cpu_online_mask, vector);
+        else
-                cpu_clear(smp_processor_id(), mask);
-                send_IPI_mask(mask, vector);
-        } else
                __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
 }
 static inline void __local_send_IPI_all(int vector)
 {
        if (no_broadcast || vector == NMI_VECTOR)
-                send_IPI_mask(cpu_online_map, vector);
+                send_IPI_mask(cpu_online_mask, vector);
        else
                __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
 }
diff --git a/arch/x86/include/asm/mach-generic/mach_apic.h b/arch/x86/include/asm/mach-generic/mach_apic.h
index e430f47df667..48553e958ad5 100644
--- a/arch/x86/include/asm/mach-generic/mach_apic.h
+++ b/arch/x86/include/asm/mach-generic/mach_apic.h
@@ -24,6 +24,7 @@
 #define check_phys_apicid_present (genapic->check_phys_apicid_present)
 #define check_apicid_used (genapic->check_apicid_used)
 #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid)
+#define cpu_mask_to_apicid_and (genapic->cpu_mask_to_apicid_and)
 #define vector_allocation_domain (genapic->vector_allocation_domain)
 #define enable_apic_mode (genapic->enable_apic_mode)
 #define phys_pkg_id (genapic->phys_pkg_id)
diff --git a/arch/x86/include/asm/numaq/apic.h b/arch/x86/include/asm/numaq/apic.h
index 0bf2a06b7a4e..c80f00d29965 100644
--- a/arch/x86/include/asm/numaq/apic.h
+++ b/arch/x86/include/asm/numaq/apic.h
@@ -7,9 +7,9 @@
 #define APIC_DFR_VALUE  (APIC_DFR_CLUSTER)
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
 {
-        return CPU_MASK_ALL;
+        return &CPU_MASK_ALL;
 }
 #define NO_BALANCE_IRQ (1)
@@ -122,7 +122,13 @@ static inline void enable_apic_mode(void)
 * We use physical apicids here, not logical, so just return the default
 * physical broadcast to stop people from breaking us
 */
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+        return (int) 0xF;
+}
+static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                  const struct cpumask *andmask)
 {
        return (int) 0xF;
 }
diff --git a/arch/x86/include/asm/numaq/ipi.h b/arch/x86/include/asm/numaq/ipi.h
index 935588d286cf..a8374c652778 100644
--- a/arch/x86/include/asm/numaq/ipi.h
+++ b/arch/x86/include/asm/numaq/ipi.h
@@ -1,25 +1,22 @@
 #ifndef __ASM_NUMAQ_IPI_H
 #define __ASM_NUMAQ_IPI_H
-void send_IPI_mask_sequence(cpumask_t, int vector);
+void send_IPI_mask_sequence(const struct cpumask *mask, int vector);
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const struct cpumask *mask, int vector)
 {
        send_IPI_mask_sequence(mask, vector);
 }
 static inline void send_IPI_allbutself(int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        send_IPI_mask_allbutself(cpu_online_mask, vector);
-        cpu_clear(smp_processor_id(), mask);
-        if (!cpus_empty(mask))
-                send_IPI_mask(mask, vector);
 }
 static inline void send_IPI_all(int vector)
 {
-        send_IPI_mask(cpu_online_map, vector);
+        send_IPI_mask(cpu_online_mask, vector);
 }
 #endif /* __ASM_NUMAQ_IPI_H */
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index d12811ce51d9..830b9fcb6427 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -60,7 +60,7 @@ struct smp_ops {
        void (*cpu_die)(unsigned int cpu);
        void (*play_dead)(void);
-        void (*send_call_func_ipi)(cpumask_t mask);
+        void (*send_call_func_ipi)(const struct cpumask *mask);
        void (*send_call_func_single_ipi)(int cpu);
 };
@@ -125,7 +125,7 @@ static inline void arch_send_call_function_single_ipi(int cpu)
 static inline void arch_send_call_function_ipi(cpumask_t mask)
 {
-        smp_ops.send_call_func_ipi(mask);
+        smp_ops.send_call_func_ipi(&mask);
 }
 void cpu_disable_common(void);
@@ -138,7 +138,7 @@ void native_cpu_die(unsigned int cpu);
 void native_play_dead(void);
 void play_dead_common(void);
-void native_send_call_func_ipi(cpumask_t mask);
+void native_send_call_func_ipi(const struct cpumask *mask);
 void native_send_call_func_single_ipi(int cpu);
 extern void prefill_possible_map(void);
diff --git a/arch/x86/include/asm/summit/apic.h b/arch/x86/include/asm/summit/apic.h
index 9b3070f1c2ac..99327d1be49f 100644
--- a/arch/x86/include/asm/summit/apic.h
+++ b/arch/x86/include/asm/summit/apic.h
@@ -14,13 +14,13 @@
 #define APIC_DFR_VALUE  (APIC_DFR_CLUSTER)
-static inline cpumask_t target_cpus(void)
+static inline const cpumask_t *target_cpus(void)
 {
        /* CPU_MASK_ALL (0xff) has undefined behaviour with
         * dest_LowestPrio mode logical clustered apic interrupt routing
         * Just start on cpu 0.  IRQ balancing will spread load
         */
-        return cpumask_of_cpu(0);
+        return &cpumask_of_cpu(0);
 }
 #define INT_DELIVERY_MODE (dest_LowestPrio)
@@ -137,14 +137,14 @@ static inline void enable_apic_mode(void)
 {
 }
-static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+static inline unsigned int cpu_mask_to_apicid(const cpumask_t *cpumask)
 {
        int num_bits_set;
        int cpus_found = 0;
        int cpu;
        int apicid;
-        num_bits_set = cpus_weight(cpumask);
+        num_bits_set = cpus_weight(*cpumask);
        /* Return id to all */
        if (num_bits_set == NR_CPUS)
                return (int) 0xFF;
@@ -152,10 +152,10 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
         * The cpus in the mask must all be on the apic cluster.  If are not
         * on the same apicid cluster return default value of TARGET_CPUS.
         */
-        cpu = first_cpu(cpumask);
+        cpu = first_cpu(*cpumask);
        apicid = cpu_to_logical_apicid(cpu);
        while (cpus_found < num_bits_set) {
-                if (cpu_isset(cpu, cpumask)) {
+                if (cpu_isset(cpu, *cpumask)) {
                        int new_apicid = cpu_to_logical_apicid(cpu);
                        if (apicid_cluster(apicid) !=
                                        apicid_cluster(new_apicid)){
@@ -170,6 +170,49 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
        return apicid;
 }
+static inline unsigned int cpu_mask_to_apicid_and(const struct cpumask *inmask,
+                                                  const struct cpumask *andmask)
+{
+        int num_bits_set;
+        int cpus_found = 0;
+        int cpu;
+        int apicid = 0xFF;
+        cpumask_var_t cpumask;
+        if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
+                return (int) 0xFF;
+        cpumask_and(cpumask, inmask, andmask);
+        cpumask_and(cpumask, cpumask, cpu_online_mask);
+        num_bits_set = cpumask_weight(cpumask);
+        /* Return id to all */
+        if (num_bits_set == nr_cpu_ids)
+                goto exit;
+        /*
+         * The cpus in the mask must all be on the apic cluster.  If are not
+         * on the same apicid cluster return default value of TARGET_CPUS.
+         */
+        cpu = cpumask_first(cpumask);
+        apicid = cpu_to_logical_apicid(cpu);
+        while (cpus_found < num_bits_set) {
+                if (cpumask_test_cpu(cpu, cpumask)) {
+                        int new_apicid = cpu_to_logical_apicid(cpu);
+                        if (apicid_cluster(apicid) !=
+                                        apicid_cluster(new_apicid)){
+                                printk ("%s: Not a valid mask!\n", __func__);
+                                return 0xFF;
+                        }
+                        apicid = apicid | new_apicid;
+                        cpus_found++;
+                }
+                cpu++;
+        }
+exit:
+        free_cpumask_var(cpumask);
+        return apicid;
+}
 /* cpuid returns the value latched in the HW at reset, not the APIC ID
 * register's value.  For any box whose BIOS changes APIC IDs, like
 * clustered APIC systems, we must use hard_smp_processor_id.
diff --git a/arch/x86/include/asm/summit/ipi.h b/arch/x86/include/asm/summit/ipi.h
index 53bd1e7bd7b4..a8a2c24f50cc 100644
--- a/arch/x86/include/asm/summit/ipi.h
+++ b/arch/x86/include/asm/summit/ipi.h
@@ -1,9 +1,10 @@
 #ifndef __ASM_SUMMIT_IPI_H
 #define __ASM_SUMMIT_IPI_H
-void send_IPI_mask_sequence(cpumask_t mask, int vector);
+void send_IPI_mask_sequence(const cpumask_t *mask, int vector);
+void send_IPI_mask_allbutself(const cpumask_t *mask, int vector);
-static inline void send_IPI_mask(cpumask_t mask, int vector)
+static inline void send_IPI_mask(const cpumask_t *mask, int vector)
 {
        send_IPI_mask_sequence(mask, vector);
 }
@@ -14,12 +15,12 @@ static inline void send_IPI_allbutself(int vector)
        cpu_clear(smp_processor_id(), mask);
        if (!cpus_empty(mask))
-                send_IPI_mask(mask, vector);
+                send_IPI_mask(&mask, vector);
 }
 static inline void send_IPI_all(int vector)
 {
-        send_IPI_mask(cpu_online_map, vector);
+        send_IPI_mask(&cpu_online_map, vector);
 }
 #endif /* __ASM_SUMMIT_IPI_H */
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index ff386ff50ed7..79e31e9dcdda 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -226,6 +226,8 @@ extern cpumask_t cpu_coregroup_map(int cpu);
 #define topology_core_id(cpu)                   (cpu_data(cpu).cpu_core_id)
 #define topology_core_siblings(cpu)             (per_cpu(cpu_core_map, cpu))
 #define topology_thread_siblings(cpu)           (per_cpu(cpu_sibling_map, cpu))
+#define topology_core_cpumask(cpu)              (&per_cpu(cpu_core_map, cpu))
+#define topology_thread_cpumask(cpu)            (&per_cpu(cpu_sibling_map, cpu))
 /* indicates that pointers to the topology cpumask_t maps are valid */
 #define arch_provides_topology_pointers         yes
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index b5229affb953..6b7f824db160 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -119,8 +119,6 @@ EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
 int first_system_vector = 0xfe;
-char system_vectors[NR_VECTORS] = { [0 ... NR_VECTORS-1] = SYS_VECTOR_FREE};
 /*
 * Debug level, exported for io_apic.c
 */
@@ -142,7 +140,7 @@ static int lapic_next_event(unsigned long delta,
                            struct clock_event_device *evt);
 static void lapic_timer_setup(enum clock_event_mode mode,
                              struct clock_event_device *evt);
-static void lapic_timer_broadcast(cpumask_t mask);
+static void lapic_timer_broadcast(const cpumask_t *mask);
 static void apic_pm_activate(void);
 /*
@@ -455,7 +453,7 @@ static void lapic_timer_setup(enum clock_event_mode mode,
 /*
 * Local APIC timer broadcast function
 */
-static void lapic_timer_broadcast(cpumask_t mask)
+static void lapic_timer_broadcast(const cpumask_t *mask)
 {
 #ifdef CONFIG_SMP
        send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
@@ -471,7 +469,7 @@ static void __cpuinit setup_APIC_timer(void)
        struct clock_event_device *levt = &__get_cpu_var(lapic_events);
        memcpy(levt, &lapic_clockevent, sizeof(*levt));
-        levt->cpumask = cpumask_of_cpu(smp_processor_id());
+        levt->cpumask = cpumask_of(smp_processor_id());
        clockevents_register_device(levt);
 }
@@ -1807,28 +1805,32 @@ void disconnect_bsp_APIC(int virt_wire_setup)
 void __cpuinit generic_processor_info(int apicid, int version)
 {
        int cpu;
-        cpumask_t tmp_map;
        /*
         * Validate version
         */
        if (version == 0x0) {
                pr_warning("BIOS bug, APIC version is 0 for CPU#%d! "
-                        "fixing up to 0x10. (tell your hw vendor)\n",
+                           "fixing up to 0x10. (tell your hw vendor)\n",
-                        version);
+                                version);
                version = 0x10;
        }
        apic_version[apicid] = version;
-        if (num_processors >= NR_CPUS) {
+        if (num_processors >= nr_cpu_ids) {
-                pr_warning("WARNING: NR_CPUS limit of %i reached."
+                int max = nr_cpu_ids;
-                        "  Processor ignored.\n", NR_CPUS);
+                int thiscpu = max + disabled_cpus;
+                pr_warning(
+                        "ACPI: NR_CPUS/possible_cpus limit of %i reached."
+                        "  Processor %d/0x%x ignored.\n", max, thiscpu, apicid);
+                disabled_cpus++;
                return;
        }
        num_processors++;
-        cpus_complement(tmp_map, cpu_present_map);
+        cpu = cpumask_next_zero(-1, cpu_present_mask);
-        cpu = first_cpu(tmp_map);
        physid_set(apicid, phys_cpu_present_map);
        if (apicid == boot_cpu_physical_apicid) {
@@ -1878,8 +1880,8 @@ void __cpuinit generic_processor_info(int apicid, int version)
        }
 #endif
-        cpu_set(cpu, cpu_possible_map);
+        set_cpu_possible(cpu, true);
-        cpu_set(cpu, cpu_present_map);
+        set_cpu_present(cpu, true);
 }
 #ifdef CONFIG_X86_64
@@ -2081,7 +2083,7 @@ __cpuinit int apic_is_clustered_box(void)
        bios_cpu_apicid = early_per_cpu_ptr(x86_bios_cpu_apicid);
        bitmap_zero(clustermap, NUM_APIC_CLUSTERS);
-        for (i = 0; i < NR_CPUS; i++) {
+        for (i = 0; i < nr_cpu_ids; i++) {
                /* are we being called early in kernel startup? */
                if (bios_cpu_apicid) {
                        id = bios_cpu_apicid[i];
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 68b5d8681cbb..c6ecda64f5f1 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -534,31 +534,16 @@ static void __cpuinit free_cache_attributes(unsigned int cpu)
        per_cpu(cpuid4_info, cpu) = NULL;
 }
-static int __cpuinit detect_cache_attributes(unsigned int cpu)
+static void get_cpu_leaves(void *_retval)
 {
-        struct _cpuid4_info     *this_leaf;
+        int j, *retval = _retval, cpu = smp_processor_id();
-        unsigned long           j;
-        int                     retval;
-        cpumask_t               oldmask;
-        if (num_cache_leaves == 0)
-                return -ENOENT;
-        per_cpu(cpuid4_info, cpu) = kzalloc(
-            sizeof(struct _cpuid4_info) * num_cache_leaves, GFP_KERNEL);
-        if (per_cpu(cpuid4_info, cpu) == NULL)
-                return -ENOMEM;
-        oldmask = current->cpus_allowed;
-        retval = set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
-        if (retval)
-                goto out;
        /* Do cpuid and store the results */
        for (j = 0; j < num_cache_leaves; j++) {
+                struct _cpuid4_info *this_leaf;
                this_leaf = CPUID4_INFO_IDX(cpu, j);
-                retval = cpuid4_cache_lookup(j, this_leaf);
+                *retval = cpuid4_cache_lookup(j, this_leaf);
-                if (unlikely(retval < 0)) {
+                if (unlikely(*retval < 0)) {
                        int i;
                        for (i = 0; i < j; i++)
@@ -567,9 +552,21 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
                }
                cache_shared_cpu_map_setup(cpu, j);
        }
-        set_cpus_allowed_ptr(current, &oldmask);
+}
+static int __cpuinit detect_cache_attributes(unsigned int cpu)
+{
+        int                     retval;
+        if (num_cache_leaves == 0)
+                return -ENOENT;
+        per_cpu(cpuid4_info, cpu) = kzalloc(
+            sizeof(struct _cpuid4_info) * num_cache_leaves, GFP_KERNEL);
+        if (per_cpu(cpuid4_info, cpu) == NULL)
+                return -ENOMEM;
-out:
+        smp_call_function_single(cpu, get_cpu_leaves, &retval, true);
        if (retval) {
                kfree(per_cpu(cpuid4_info, cpu));
                per_cpu(cpuid4_info, cpu) = NULL;
@@ -626,8 +623,8 @@ static ssize_t show_shared_cpu_map_func(struct _cpuid4_info *this_leaf,
                cpumask_t *mask = &this_leaf->shared_cpu_map;
                n = type?
-                        cpulist_scnprintf(buf, len-2, *mask):
+                        cpulist_scnprintf(buf, len-2, mask) :
-                        cpumask_scnprintf(buf, len-2, *mask);
+                        cpumask_scnprintf(buf, len-2, mask);
                buf[n++] = '\n';
                buf[n] = '\0';
        }
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c b/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
index 748c8f9e7a05..a5a5e0530370 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
@@ -83,34 +83,41 @@ static DEFINE_PER_CPU(unsigned char, bank_map);	/* see which banks are on */
 * CPU Initialization
 */
+struct thresh_restart {
+        struct threshold_block *b;
+        int reset;
+        u16 old_limit;
+};
 /* must be called with correct cpu affinity */
-static void threshold_restart_bank(struct threshold_block *b,
+static long threshold_restart_bank(void *_tr)
-                                   int reset, u16 old_limit)
 {
+        struct thresh_restart *tr = _tr;
        u32 mci_misc_hi, mci_misc_lo;
-        rdmsr(b->address, mci_misc_lo, mci_misc_hi);
+        rdmsr(tr->b->address, mci_misc_lo, mci_misc_hi);
-        if (b->threshold_limit < (mci_misc_hi & THRESHOLD_MAX))
+        if (tr->b->threshold_limit < (mci_misc_hi & THRESHOLD_MAX))
-                reset = 1;      /* limit cannot be lower than err count */
+                tr->reset = 1;  /* limit cannot be lower than err count */
-        if (reset) {            /* reset err count and overflow bit */
+        if (tr->reset) {                /* reset err count and overflow bit */
                mci_misc_hi =
                    (mci_misc_hi & ~(MASK_ERR_COUNT_HI | MASK_OVERFLOW_HI)) |
-                    (THRESHOLD_MAX - b->threshold_limit);
+                    (THRESHOLD_MAX - tr->b->threshold_limit);
-        } else if (old_limit) { /* change limit w/o reset */
+        } else if (tr->old_limit) {     /* change limit w/o reset */
                int new_count = (mci_misc_hi & THRESHOLD_MAX) +
-                    (old_limit - b->threshold_limit);
+                    (tr->old_limit - tr->b->threshold_limit);
                mci_misc_hi = (mci_misc_hi & ~MASK_ERR_COUNT_HI) |
                    (new_count & THRESHOLD_MAX);
        }
-        b->interrupt_enable ?
+        tr->b->interrupt_enable ?
            (mci_misc_hi = (mci_misc_hi & ~MASK_INT_TYPE_HI) | INT_TYPE_APIC) :
            (mci_misc_hi &= ~MASK_INT_TYPE_HI);
        mci_misc_hi |= MASK_COUNT_EN_HI;
-        wrmsr(b->address, mci_misc_lo, mci_misc_hi);
+        wrmsr(tr->b->address, mci_misc_lo, mci_misc_hi);
+        return 0;
 }
 /* cpu init entry point, called from mce.c with preempt off */
@@ -120,6 +127,7 @@ void __cpuinit mce_amd_feature_init(struct cpuinfo_x86 *c)
        unsigned int cpu = smp_processor_id();
        u8 lvt_off;
        u32 low = 0, high = 0, address = 0;
+        struct thresh_restart tr;
        for (bank = 0; bank < NR_BANKS; ++bank) {
                for (block = 0; block < NR_BLOCKS; ++block) {
@@ -162,7 +170,10 @@ void __cpuinit mce_amd_feature_init(struct cpuinfo_x86 *c)
                        wrmsr(address, low, high);
                        threshold_defaults.address = address;
-                        threshold_restart_bank(&threshold_defaults, 0, 0);
+                        tr.b = &threshold_defaults;
+                        tr.reset = 0;
+                        tr.old_limit = 0;
+                        threshold_restart_bank(&tr);
                }
        }
 }
@@ -251,20 +262,6 @@ struct threshold_attr {
        ssize_t(*store) (struct threshold_block *, const char *, size_t count);
 };
-static void affinity_set(unsigned int cpu, cpumask_t *oldmask,
-                                           cpumask_t *newmask)
-{
-        *oldmask = current->cpus_allowed;
-        cpus_clear(*newmask);
-        cpu_set(cpu, *newmask);
-        set_cpus_allowed_ptr(current, newmask);
-}
-static void affinity_restore(const cpumask_t *oldmask)
-{
-        set_cpus_allowed_ptr(current, oldmask);
-}
 #define SHOW_FIELDS(name)                                           \
 static ssize_t show_ ## name(struct threshold_block * b, char *buf) \
 {                                                                   \
@@ -277,15 +274,16 @@ static ssize_t store_interrupt_enable(struct threshold_block *b,
                                      const char *buf, size_t count)
 {
        char *end;
-        cpumask_t oldmask, newmask;
+        struct thresh_restart tr;
        unsigned long new = simple_strtoul(buf, &end, 0);
        if (end == buf)
                return -EINVAL;
        b->interrupt_enable = !!new;
-        affinity_set(b->cpu, &oldmask, &newmask);
+        tr.b = b;
-        threshold_restart_bank(b, 0, 0);
+        tr.reset = 0;
-        affinity_restore(&oldmask);
+        tr.old_limit = 0;
+        work_on_cpu(b->cpu, threshold_restart_bank, &tr);
        return end - buf;
 }
@@ -294,8 +292,7 @@ static ssize_t store_threshold_limit(struct threshold_block *b,
                                     const char *buf, size_t count)
 {
        char *end;
-        cpumask_t oldmask, newmask;
+        struct thresh_restart tr;
-        u16 old;
        unsigned long new = simple_strtoul(buf, &end, 0);
        if (end == buf)
                return -EINVAL;
@@ -303,34 +300,36 @@ static ssize_t store_threshold_limit(struct threshold_block *b,
                new = THRESHOLD_MAX;
        if (new < 1)
                new = 1;
-        old = b->threshold_limit;
+        tr.old_limit = b->threshold_limit;
        b->threshold_limit = new;
+        tr.b = b;
+        tr.reset = 0;
-        affinity_set(b->cpu, &oldmask, &newmask);
+        work_on_cpu(b->cpu, threshold_restart_bank, &tr);
-        threshold_restart_bank(b, 0, old);
-        affinity_restore(&oldmask);
        return end - buf;
 }
-static ssize_t show_error_count(struct threshold_block *b, char *buf)
+static long local_error_count(void *_b)
 {
-        u32 high, low;
+        struct threshold_block *b = _b;
-        cpumask_t oldmask, newmask;
+        u32 low, high;
-        affinity_set(b->cpu, &oldmask, &newmask);
        rdmsr(b->address, low, high);
-        affinity_restore(&oldmask);
+        return (high & 0xFFF) - (THRESHOLD_MAX - b->threshold_limit);
-        return sprintf(buf, "%x\n",
+}
-                       (high & 0xFFF) - (THRESHOLD_MAX - b->threshold_limit));
+static ssize_t show_error_count(struct threshold_block *b, char *buf)
+{
+        return sprintf(buf, "%lx\n", work_on_cpu(b->cpu, local_error_count, b));
 }
 static ssize_t store_error_count(struct threshold_block *b,
                                 const char *buf, size_t count)
 {
-        cpumask_t oldmask, newmask;
+        struct thresh_restart tr = { .b = b, .reset = 1, .old_limit = 0 };
-        affinity_set(b->cpu, &oldmask, &newmask);
-        threshold_restart_bank(b, 1, 0);
+        work_on_cpu(b->cpu, threshold_restart_bank, &tr);
-        affinity_restore(&oldmask);
        return 1;
 }
@@ -463,12 +462,19 @@ out_free:
        return err;
 }
+static long local_allocate_threshold_blocks(void *_bank)
+{
+        unsigned int *bank = _bank;
+        return allocate_threshold_blocks(smp_processor_id(), *bank, 0,
+                                         MSR_IA32_MC0_MISC + *bank * 4);
+}
 /* symlinks sibling shared banks to first core.  first core owns dir/files. */
 static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 {
        int i, err = 0;
        struct threshold_bank *b = NULL;
-        cpumask_t oldmask, newmask;
        char name[32];
        sprintf(name, "threshold_bank%i", bank);
@@ -519,11 +525,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
        per_cpu(threshold_banks, cpu)[bank] = b;
-        affinity_set(cpu, &oldmask, &newmask);
+        err = work_on_cpu(cpu, local_allocate_threshold_blocks, &bank);
-        err = allocate_threshold_blocks(cpu, bank, 0,
-                                        MSR_IA32_MC0_MISC + bank * 4);
-        affinity_restore(&oldmask);
        if (err)
                goto out_free;
diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c
index c0262791bda4..34185488e4fb 100644
--- a/arch/x86/kernel/genapic_flat_64.c
+++ b/arch/x86/kernel/genapic_flat_64.c
@@ -30,12 +30,12 @@ static int flat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
        return 1;
 }
-static cpumask_t flat_target_cpus(void)
+static const struct cpumask *flat_target_cpus(void)
 {
-        return cpu_online_map;
+        return cpu_online_mask;
 }
-static cpumask_t flat_vector_allocation_domain(int cpu)
+static void flat_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
        /* Careful. Some cpus do not strictly honor the set of cpus
         * specified in the interrupt destination when using lowest
@@ -45,8 +45,8 @@ static cpumask_t flat_vector_allocation_domain(int cpu)
         * deliver interrupts to the wrong hyperthread when only one
         * hyperthread was specified in the interrupt desitination.
         */
-        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        cpumask_clear(retmask);
-        return domain;
+        cpumask_bits(retmask)[0] = APIC_ALL_CPUS;
 }
 /*
@@ -69,9 +69,8 @@ static void flat_init_apic_ldr(void)
        apic_write(APIC_LDR, val);
 }
-static void flat_send_IPI_mask(cpumask_t cpumask, int vector)
+static inline void _flat_send_IPI_mask(unsigned long mask, int vector)
 {
-        unsigned long mask = cpus_addr(cpumask)[0];
        unsigned long flags;
        local_irq_save(flags);
@@ -79,20 +78,41 @@ static void flat_send_IPI_mask(cpumask_t cpumask, int vector)
        local_irq_restore(flags);
 }
+static void flat_send_IPI_mask(const struct cpumask *cpumask, int vector)
+{
+        unsigned long mask = cpumask_bits(cpumask)[0];
+        _flat_send_IPI_mask(mask, vector);
+}
+static void flat_send_IPI_mask_allbutself(const struct cpumask *cpumask,
+                                          int vector)
+{
+        unsigned long mask = cpumask_bits(cpumask)[0];
+        int cpu = smp_processor_id();
+        if (cpu < BITS_PER_LONG)
+                clear_bit(cpu, &mask);
+        _flat_send_IPI_mask(mask, vector);
+}
 static void flat_send_IPI_allbutself(int vector)
 {
+        int cpu = smp_processor_id();
 #ifdef  CONFIG_HOTPLUG_CPU
        int hotplug = 1;
 #else
        int hotplug = 0;
 #endif
        if (hotplug || vector == NMI_VECTOR) {
-                cpumask_t allbutme = cpu_online_map;
+                if (!cpumask_equal(cpu_online_mask, cpumask_of(cpu))) {
+                        unsigned long mask = cpumask_bits(cpu_online_mask)[0];
-                cpu_clear(smp_processor_id(), allbutme);
+                        if (cpu < BITS_PER_LONG)
+                                clear_bit(cpu, &mask);
-                if (!cpus_empty(allbutme))
+                        _flat_send_IPI_mask(mask, vector);
-                        flat_send_IPI_mask(allbutme, vector);
+                }
        } else if (num_online_cpus() > 1) {
                __send_IPI_shortcut(APIC_DEST_ALLBUT, vector,APIC_DEST_LOGICAL);
        }
@@ -101,7 +121,7 @@ static void flat_send_IPI_allbutself(int vector)
 static void flat_send_IPI_all(int vector)
 {
        if (vector == NMI_VECTOR)
-                flat_send_IPI_mask(cpu_online_map, vector);
+                flat_send_IPI_mask(cpu_online_mask, vector);
        else
                __send_IPI_shortcut(APIC_DEST_ALLINC, vector, APIC_DEST_LOGICAL);
 }
@@ -135,9 +155,18 @@ static int flat_apic_id_registered(void)
        return physid_isset(read_xapic_id(), phys_cpu_present_map);
 }
-static unsigned int flat_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int flat_cpu_mask_to_apicid(const struct cpumask *cpumask)
+{
+        return cpumask_bits(cpumask)[0] & APIC_ALL_CPUS;
+}
+static unsigned int flat_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                const struct cpumask *andmask)
 {
-        return cpus_addr(cpumask)[0] & APIC_ALL_CPUS;
+        unsigned long mask1 = cpumask_bits(cpumask)[0] & APIC_ALL_CPUS;
+        unsigned long mask2 = cpumask_bits(andmask)[0] & APIC_ALL_CPUS;
+        return mask1 & mask2;
 }
 static unsigned int phys_pkg_id(int index_msb)
@@ -157,8 +186,10 @@ struct genapic apic_flat =  {
        .send_IPI_all = flat_send_IPI_all,
        .send_IPI_allbutself = flat_send_IPI_allbutself,
        .send_IPI_mask = flat_send_IPI_mask,
+        .send_IPI_mask_allbutself = flat_send_IPI_mask_allbutself,
        .send_IPI_self = apic_send_IPI_self,
        .cpu_mask_to_apicid = flat_cpu_mask_to_apicid,
+        .cpu_mask_to_apicid_and = flat_cpu_mask_to_apicid_and,
        .phys_pkg_id = phys_pkg_id,
        .get_apic_id = get_apic_id,
        .set_apic_id = set_apic_id,
@@ -188,35 +219,39 @@ static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
        return 0;
 }
-static cpumask_t physflat_target_cpus(void)
+static const struct cpumask *physflat_target_cpus(void)
 {
-        return cpu_online_map;
+        return cpu_online_mask;
 }
-static cpumask_t physflat_vector_allocation_domain(int cpu)
+static void physflat_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
-        return cpumask_of_cpu(cpu);
+        cpumask_clear(retmask);
+        cpumask_set_cpu(cpu, retmask);
 }
-static void physflat_send_IPI_mask(cpumask_t cpumask, int vector)
+static void physflat_send_IPI_mask(const struct cpumask *cpumask, int vector)
 {
        send_IPI_mask_sequence(cpumask, vector);
 }
-static void physflat_send_IPI_allbutself(int vector)
+static void physflat_send_IPI_mask_allbutself(const struct cpumask *cpumask,
+                                              int vector)
 {
-        cpumask_t allbutme = cpu_online_map;
+        send_IPI_mask_allbutself(cpumask, vector);
+}
-        cpu_clear(smp_processor_id(), allbutme);
+static void physflat_send_IPI_allbutself(int vector)
-        physflat_send_IPI_mask(allbutme, vector);
+{
+        send_IPI_mask_allbutself(cpu_online_mask, vector);
 }
 static void physflat_send_IPI_all(int vector)
 {
-        physflat_send_IPI_mask(cpu_online_map, vector);
+        physflat_send_IPI_mask(cpu_online_mask, vector);
 }
-static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int physflat_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
        int cpu;
@@ -224,13 +259,31 @@ static unsigned int physflat_cpu_mask_to_apicid(cpumask_t cpumask)
         * We're using fixed IRQ delivery, can only return one phys APIC ID.
         * May as well be the first.
         */
-        cpu = first_cpu(cpumask);
+        cpu = cpumask_first(cpumask);
        if ((unsigned)cpu < nr_cpu_ids)
                return per_cpu(x86_cpu_to_apicid, cpu);
        else
                return BAD_APICID;
 }
+static unsigned int
+physflat_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                const struct cpumask *andmask)
+{
+        int cpu;
+        /*
+         * We're using fixed IRQ delivery, can only return one phys APIC ID.
+         * May as well be the first.
+         */
+        for_each_cpu_and(cpu, cpumask, andmask)
+                if (cpumask_test_cpu(cpu, cpu_online_mask))
+                        break;
+        if (cpu < nr_cpu_ids)
+                return per_cpu(x86_cpu_to_apicid, cpu);
+        return BAD_APICID;
+}
 struct genapic apic_physflat =  {
        .name = "physical flat",
        .acpi_madt_oem_check = physflat_acpi_madt_oem_check,
@@ -243,8 +296,10 @@ struct genapic apic_physflat =  {
        .send_IPI_all = physflat_send_IPI_all,
        .send_IPI_allbutself = physflat_send_IPI_allbutself,
        .send_IPI_mask = physflat_send_IPI_mask,
+        .send_IPI_mask_allbutself = physflat_send_IPI_mask_allbutself,
        .send_IPI_self = apic_send_IPI_self,
        .cpu_mask_to_apicid = physflat_cpu_mask_to_apicid,
+        .cpu_mask_to_apicid_and = physflat_cpu_mask_to_apicid_and,
        .phys_pkg_id = phys_pkg_id,
        .get_apic_id = get_apic_id,
        .set_apic_id = set_apic_id,
diff --git a/arch/x86/kernel/genx2apic_cluster.c b/arch/x86/kernel/genx2apic_cluster.c
index f6a2c8eb48a6..6ce497cc372d 100644
--- a/arch/x86/kernel/genx2apic_cluster.c
+++ b/arch/x86/kernel/genx2apic_cluster.c
@@ -22,19 +22,18 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
-static cpumask_t x2apic_target_cpus(void)
+static const struct cpumask *x2apic_target_cpus(void)
 {
-        return cpumask_of_cpu(0);
+        return cpumask_of(0);
 }
 /*
 * for now each logical cpu is in its own vector allocation domain.
 */
-static cpumask_t x2apic_vector_allocation_domain(int cpu)
+static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
-        cpumask_t domain = CPU_MASK_NONE;
+        cpumask_clear(retmask);
-        cpu_set(cpu, domain);
+        cpumask_set_cpu(cpu, retmask);
-        return domain;
 }
 static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
@@ -56,32 +55,53 @@ static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
 * at once. We have 16 cpu's in a cluster. This will minimize IPI register
 * writes.
 */
-static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
+static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
 {
        unsigned long flags;
        unsigned long query_cpu;
        local_irq_save(flags);
-        for_each_cpu_mask(query_cpu, mask) {
+        for_each_cpu(query_cpu, mask)
-                __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+                __x2apic_send_IPI_dest(
-                                       vector, APIC_DEST_LOGICAL);
+                        per_cpu(x86_cpu_to_logical_apicid, query_cpu),
-        }
+                        vector, APIC_DEST_LOGICAL);
        local_irq_restore(flags);
 }
-static void x2apic_send_IPI_allbutself(int vector)
+static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask,
+                                            int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        unsigned long flags;
+        unsigned long query_cpu;
+        unsigned long this_cpu = smp_processor_id();
-        cpu_clear(smp_processor_id(), mask);
+        local_irq_save(flags);
+        for_each_cpu(query_cpu, mask)
+                if (query_cpu != this_cpu)
+                        __x2apic_send_IPI_dest(
+                                per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+                                vector, APIC_DEST_LOGICAL);
+        local_irq_restore(flags);
+}
+static void x2apic_send_IPI_allbutself(int vector)
+{
+        unsigned long flags;
+        unsigned long query_cpu;
+        unsigned long this_cpu = smp_processor_id();
-        if (!cpus_empty(mask))
+        local_irq_save(flags);
-                x2apic_send_IPI_mask(mask, vector);
+        for_each_online_cpu(query_cpu)
+                if (query_cpu != this_cpu)
+                        __x2apic_send_IPI_dest(
+                                per_cpu(x86_cpu_to_logical_apicid, query_cpu),
+                                vector, APIC_DEST_LOGICAL);
+        local_irq_restore(flags);
 }
 static void x2apic_send_IPI_all(int vector)
 {
-        x2apic_send_IPI_mask(cpu_online_map, vector);
+        x2apic_send_IPI_mask(cpu_online_mask, vector);
 }
 static int x2apic_apic_id_registered(void)
@@ -89,21 +109,38 @@ static int x2apic_apic_id_registered(void)
        return 1;
 }
-static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
        int cpu;
        /*
-         * We're using fixed IRQ delivery, can only return one phys APIC ID.
+         * We're using fixed IRQ delivery, can only return one logical APIC ID.
         * May as well be the first.
         */
-        cpu = first_cpu(cpumask);
+        cpu = cpumask_first(cpumask);
-        if ((unsigned)cpu < NR_CPUS)
+        if ((unsigned)cpu < nr_cpu_ids)
                return per_cpu(x86_cpu_to_logical_apicid, cpu);
        else
                return BAD_APICID;
 }
+static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                  const struct cpumask *andmask)
+{
+        int cpu;
+        /*
+         * We're using fixed IRQ delivery, can only return one logical APIC ID.
+         * May as well be the first.
+         */
+        for_each_cpu_and(cpu, cpumask, andmask)
+                if (cpumask_test_cpu(cpu, cpu_online_mask))
+                        break;
+        if (cpu < nr_cpu_ids)
+                return per_cpu(x86_cpu_to_logical_apicid, cpu);
+        return BAD_APICID;
+}
 static unsigned int get_apic_id(unsigned long x)
 {
        unsigned int id;
@@ -150,8 +187,10 @@ struct genapic apic_x2apic_cluster = {
        .send_IPI_all = x2apic_send_IPI_all,
        .send_IPI_allbutself = x2apic_send_IPI_allbutself,
        .send_IPI_mask = x2apic_send_IPI_mask,
+        .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
        .send_IPI_self = x2apic_send_IPI_self,
        .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
+        .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and,
        .phys_pkg_id = phys_pkg_id,
        .get_apic_id = get_apic_id,
        .set_apic_id = set_apic_id,
diff --git a/arch/x86/kernel/genx2apic_phys.c b/arch/x86/kernel/genx2apic_phys.c
index d042211768b7..62895cf315ff 100644
--- a/arch/x86/kernel/genx2apic_phys.c
+++ b/arch/x86/kernel/genx2apic_phys.c
@@ -29,16 +29,15 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
-static cpumask_t x2apic_target_cpus(void)
+static const struct cpumask *x2apic_target_cpus(void)
 {
-        return cpumask_of_cpu(0);
+        return cpumask_of(0);
 }
-static cpumask_t x2apic_vector_allocation_domain(int cpu)
+static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
-        cpumask_t domain = CPU_MASK_NONE;
+        cpumask_clear(retmask);
-        cpu_set(cpu, domain);
+        cpumask_set_cpu(cpu, retmask);
-        return domain;
 }
 static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
@@ -54,32 +53,54 @@ static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
        x2apic_icr_write(cfg, apicid);
 }
-static void x2apic_send_IPI_mask(cpumask_t mask, int vector)
+static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
 {
        unsigned long flags;
        unsigned long query_cpu;
        local_irq_save(flags);
-        for_each_cpu_mask(query_cpu, mask) {
+        for_each_cpu(query_cpu, mask) {
                __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
                                       vector, APIC_DEST_PHYSICAL);
        }
        local_irq_restore(flags);
 }
-static void x2apic_send_IPI_allbutself(int vector)
+static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask,
+                                            int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        unsigned long flags;
+        unsigned long query_cpu;
+        unsigned long this_cpu = smp_processor_id();
+        local_irq_save(flags);
+        for_each_cpu(query_cpu, mask) {
+                if (query_cpu != this_cpu)
+                        __x2apic_send_IPI_dest(
+                                per_cpu(x86_cpu_to_apicid, query_cpu),
+                                vector, APIC_DEST_PHYSICAL);
+        }
+        local_irq_restore(flags);
+}
-        cpu_clear(smp_processor_id(), mask);
+static void x2apic_send_IPI_allbutself(int vector)
+{
+        unsigned long flags;
+        unsigned long query_cpu;
+        unsigned long this_cpu = smp_processor_id();
-        if (!cpus_empty(mask))
+        local_irq_save(flags);
-                x2apic_send_IPI_mask(mask, vector);
+        for_each_online_cpu(query_cpu)
+                if (query_cpu != this_cpu)
+                        __x2apic_send_IPI_dest(
+                                per_cpu(x86_cpu_to_apicid, query_cpu),
+                                vector, APIC_DEST_PHYSICAL);
+        local_irq_restore(flags);
 }
 static void x2apic_send_IPI_all(int vector)
 {
-        x2apic_send_IPI_mask(cpu_online_map, vector);
+        x2apic_send_IPI_mask(cpu_online_mask, vector);
 }
 static int x2apic_apic_id_registered(void)
@@ -87,7 +108,7 @@ static int x2apic_apic_id_registered(void)
        return 1;
 }
-static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
        int cpu;
@@ -95,13 +116,30 @@ static unsigned int x2apic_cpu_mask_to_apicid(cpumask_t cpumask)
         * We're using fixed IRQ delivery, can only return one phys APIC ID.
         * May as well be the first.
         */
-        cpu = first_cpu(cpumask);
+        cpu = cpumask_first(cpumask);
-        if ((unsigned)cpu < NR_CPUS)
+        if ((unsigned)cpu < nr_cpu_ids)
                return per_cpu(x86_cpu_to_apicid, cpu);
        else
                return BAD_APICID;
 }
+static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                                  const struct cpumask *andmask)
+{
+        int cpu;
+        /*
+         * We're using fixed IRQ delivery, can only return one phys APIC ID.
+         * May as well be the first.
+         */
+        for_each_cpu_and(cpu, cpumask, andmask)
+                if (cpumask_test_cpu(cpu, cpu_online_mask))
+                        break;
+        if (cpu < nr_cpu_ids)
+                return per_cpu(x86_cpu_to_apicid, cpu);
+        return BAD_APICID;
+}
 static unsigned int get_apic_id(unsigned long x)
 {
        unsigned int id;
@@ -145,8 +183,10 @@ struct genapic apic_x2apic_phys = {
        .send_IPI_all = x2apic_send_IPI_all,
        .send_IPI_allbutself = x2apic_send_IPI_allbutself,
        .send_IPI_mask = x2apic_send_IPI_mask,
+        .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
        .send_IPI_self = x2apic_send_IPI_self,
        .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
+        .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and,
        .phys_pkg_id = phys_pkg_id,
        .get_apic_id = get_apic_id,
        .set_apic_id = set_apic_id,
diff --git a/arch/x86/kernel/genx2apic_uv_x.c b/arch/x86/kernel/genx2apic_uv_x.c
index dece17289731..b193e082f6ce 100644
--- a/arch/x86/kernel/genx2apic_uv_x.c
+++ b/arch/x86/kernel/genx2apic_uv_x.c
@@ -79,16 +79,15 @@ EXPORT_SYMBOL(sn_rtc_cycles_per_second);
 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
-static cpumask_t uv_target_cpus(void)
+static const struct cpumask *uv_target_cpus(void)
 {
-        return cpumask_of_cpu(0);
+        return cpumask_of(0);
 }
-static cpumask_t uv_vector_allocation_domain(int cpu)
+static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
 {
-        cpumask_t domain = CPU_MASK_NONE;
+        cpumask_clear(retmask);
-        cpu_set(cpu, domain);
+        cpumask_set_cpu(cpu, retmask);
-        return domain;
 }
 int uv_wakeup_secondary(int phys_apicid, unsigned int start_rip)
@@ -127,28 +126,37 @@ static void uv_send_IPI_one(int cpu, int vector)
        uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
 }
-static void uv_send_IPI_mask(cpumask_t mask, int vector)
+static void uv_send_IPI_mask(const struct cpumask *mask, int vector)
 {
        unsigned int cpu;
-        for_each_possible_cpu(cpu)
+        for_each_cpu(cpu, mask)
-                if (cpu_isset(cpu, mask))
+                uv_send_IPI_one(cpu, vector);
+}
+static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
+{
+        unsigned int cpu;
+        unsigned int this_cpu = smp_processor_id();
+        for_each_cpu(cpu, mask)
+                if (cpu != this_cpu)
                        uv_send_IPI_one(cpu, vector);
 }
 static void uv_send_IPI_allbutself(int vector)
 {
-        cpumask_t mask = cpu_online_map;
+        unsigned int cpu;
+        unsigned int this_cpu = smp_processor_id();
-        cpu_clear(smp_processor_id(), mask);
-        if (!cpus_empty(mask))
+        for_each_online_cpu(cpu)
-                uv_send_IPI_mask(mask, vector);
+                if (cpu != this_cpu)
+                        uv_send_IPI_one(cpu, vector);
 }
 static void uv_send_IPI_all(int vector)
 {
-        uv_send_IPI_mask(cpu_online_map, vector);
+        uv_send_IPI_mask(cpu_online_mask, vector);
 }
 static int uv_apic_id_registered(void)
@@ -160,7 +168,7 @@ static void uv_init_apic_ldr(void)
 {
 }
-static unsigned int uv_cpu_mask_to_apicid(cpumask_t cpumask)
+static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
 {
        int cpu;
@@ -168,13 +176,30 @@ static unsigned int uv_cpu_mask_to_apicid(cpumask_t cpumask)
         * We're using fixed IRQ delivery, can only return one phys APIC ID.
         * May as well be the first.
         */
-        cpu = first_cpu(cpumask);
+        cpu = cpumask_first(cpumask);
        if ((unsigned)cpu < nr_cpu_ids)
                return per_cpu(x86_cpu_to_apicid, cpu);
        else
                return BAD_APICID;
 }
+static unsigned int uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+                                              const struct cpumask *andmask)
+{
+        int cpu;
+        /*
+         * We're using fixed IRQ delivery, can only return one phys APIC ID.
+         * May as well be the first.
+         */
+        for_each_cpu_and(cpu, cpumask, andmask)
+                if (cpumask_test_cpu(cpu, cpu_online_mask))
+                        break;
+        if (cpu < nr_cpu_ids)
+                return per_cpu(x86_cpu_to_apicid, cpu);
+        return BAD_APICID;
+}
 static unsigned int get_apic_id(unsigned long x)
 {
        unsigned int id;
@@ -222,8 +247,10 @@ struct genapic apic_x2apic_uv_x = {
        .send_IPI_all = uv_send_IPI_all,
        .send_IPI_allbutself = uv_send_IPI_allbutself,
        .send_IPI_mask = uv_send_IPI_mask,
+        .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself,
        .send_IPI_self = uv_send_IPI_self,
        .cpu_mask_to_apicid = uv_cpu_mask_to_apicid,
+        .cpu_mask_to_apicid_and = uv_cpu_mask_to_apicid_and,
        .phys_pkg_id = phys_pkg_id,
        .get_apic_id = get_apic_id,
        .set_apic_id = set_apic_id,
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 845ea097383e..cd759ad90690 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -248,7 +248,7 @@ static void hpet_legacy_clockevent_register(void)
         * Start hpet with the boot cpu mask and make it
         * global after the IO_APIC has been initialized.
         */
-        hpet_clockevent.cpumask = cpumask_of_cpu(smp_processor_id());
+        hpet_clockevent.cpumask = cpumask_of(smp_processor_id());
        clockevents_register_device(&hpet_clockevent);
        global_clock_event = &hpet_clockevent;
        printk(KERN_DEBUG "hpet clockevent registered\n");
@@ -303,7 +303,7 @@ static void hpet_set_mode(enum clock_event_mode mode,
                        struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt);
                        hpet_setup_msi_irq(hdev->irq);
                        disable_irq(hdev->irq);
-                        irq_set_affinity(hdev->irq, cpumask_of_cpu(hdev->cpu));
+                        irq_set_affinity(hdev->irq, cpumask_of(hdev->cpu));
                        enable_irq(hdev->irq);
                }
                break;
@@ -451,7 +451,7 @@ static int hpet_setup_irq(struct hpet_dev *dev)
                return -1;
        disable_irq(dev->irq);
-        irq_set_affinity(dev->irq, cpumask_of_cpu(dev->cpu));
+        irq_set_affinity(dev->irq, cpumask_of(dev->cpu));
        enable_irq(dev->irq);
        printk(KERN_DEBUG "hpet: %s irq %d for MSI\n",
@@ -502,7 +502,7 @@ static void init_one_hpet_msi_clockevent(struct hpet_dev *hdev, int cpu)
        /* 5 usec minimum reprogramming delta. */
        evt->min_delta_ns = 5000;
-        evt->cpumask = cpumask_of_cpu(hdev->cpu);
+        evt->cpumask = cpumask_of(hdev->cpu);
        clockevents_register_device(evt);
 }
diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c
index c1b5e3ece1f2..10f92fb532f3 100644
--- a/arch/x86/kernel/i8253.c
+++ b/arch/x86/kernel/i8253.c
@@ -114,7 +114,7 @@ void __init setup_pit_timer(void)
         * Start pit with the boot cpu mask and make it global after the
         * IO_APIC has been initialized.
         */
-        pit_clockevent.cpumask = cpumask_of_cpu(smp_processor_id());
+        pit_clockevent.cpumask = cpumask_of(smp_processor_id());
        pit_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC,
                                     pit_clockevent.shift);
        pit_clockevent.max_delta_ns =
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 74917658b004..62ecfc991e1e 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -136,8 +136,8 @@ static struct irq_pin_list *get_one_free_irq_2_pin(int cpu)
 struct irq_cfg {
        struct irq_pin_list *irq_2_pin;
-        cpumask_t domain;
+        cpumask_var_t domain;
-        cpumask_t old_domain;
+        cpumask_var_t old_domain;
        unsigned move_cleanup_count;
        u8 vector;
        u8 move_in_progress : 1;
@@ -152,22 +152,22 @@ static struct irq_cfg irq_cfgx[] = {
 #else
 static struct irq_cfg irq_cfgx[NR_IRQS] = {
 #endif
-        [0]  = { .domain = CPU_MASK_ALL, .vector = IRQ0_VECTOR,  },
+        [0]  = { .vector = IRQ0_VECTOR,  },
-        [1]  = { .domain = CPU_MASK_ALL, .vector = IRQ1_VECTOR,  },
+        [1]  = { .vector = IRQ1_VECTOR,  },
-        [2]  = { .domain = CPU_MASK_ALL, .vector = IRQ2_VECTOR,  },
+        [2]  = { .vector = IRQ2_VECTOR,  },
-        [3]  = { .domain = CPU_MASK_ALL, .vector = IRQ3_VECTOR,  },
+        [3]  = { .vector = IRQ3_VECTOR,  },
-        [4]  = { .domain = CPU_MASK_ALL, .vector = IRQ4_VECTOR,  },
+        [4]  = { .vector = IRQ4_VECTOR,  },
-        [5]  = { .domain = CPU_MASK_ALL, .vector = IRQ5_VECTOR,  },
+        [5]  = { .vector = IRQ5_VECTOR,  },
-        [6]  = { .domain = CPU_MASK_ALL, .vector = IRQ6_VECTOR,  },
+        [6]  = { .vector = IRQ6_VECTOR,  },
-        [7]  = { .domain = CPU_MASK_ALL, .vector = IRQ7_VECTOR,  },
+        [7]  = { .vector = IRQ7_VECTOR,  },
-        [8]  = { .domain = CPU_MASK_ALL, .vector = IRQ8_VECTOR,  },
+        [8]  = { .vector = IRQ8_VECTOR,  },
-        [9]  = { .domain = CPU_MASK_ALL, .vector = IRQ9_VECTOR,  },
+        [9]  = { .vector = IRQ9_VECTOR,  },
-        [10] = { .domain = CPU_MASK_ALL, .vector = IRQ10_VECTOR, },
+        [10] = { .vector = IRQ10_VECTOR, },
-        [11] = { .domain = CPU_MASK_ALL, .vector = IRQ11_VECTOR, },
+        [11] = { .vector = IRQ11_VECTOR, },
-        [12] = { .domain = CPU_MASK_ALL, .vector = IRQ12_VECTOR, },
+        [12] = { .vector = IRQ12_VECTOR, },
-        [13] = { .domain = CPU_MASK_ALL, .vector = IRQ13_VECTOR, },
+        [13] = { .vector = IRQ13_VECTOR, },
-        [14] = { .domain = CPU_MASK_ALL, .vector = IRQ14_VECTOR, },
+        [14] = { .vector = IRQ14_VECTOR, },
-        [15] = { .domain = CPU_MASK_ALL, .vector = IRQ15_VECTOR, },
+        [15] = { .vector = IRQ15_VECTOR, },
 };
 int __init arch_early_irq_init(void)
@@ -183,6 +183,10 @@ int __init arch_early_irq_init(void)
        for (i = 0; i < count; i++) {
                desc = irq_to_desc(i);
                desc->chip_data = &cfg[i];
+                alloc_bootmem_cpumask_var(&cfg[i].domain);
+                alloc_bootmem_cpumask_var(&cfg[i].old_domain);
+                if (i < NR_IRQS_LEGACY)
+                        cpumask_setall(cfg[i].domain);
        }
        return 0;
@@ -209,6 +213,20 @@ static struct irq_cfg *get_one_free_irq_cfg(int cpu)
        node = cpu_to_node(cpu);
        cfg = kzalloc_node(sizeof(*cfg), GFP_ATOMIC, node);
+        if (cfg) {
+                /* FIXME: needs alloc_cpumask_var_node() */
+                if (!alloc_cpumask_var(&cfg->domain, GFP_ATOMIC)) {
+                        kfree(cfg);
+                        cfg = NULL;
+                } else if (!alloc_cpumask_var(&cfg->old_domain, GFP_ATOMIC)) {
+                        free_cpumask_var(cfg->domain);
+                        kfree(cfg);
+                        cfg = NULL;
+                } else {
+                        cpumask_clear(cfg->domain);
+                        cpumask_clear(cfg->old_domain);
+                }
+        }
        printk(KERN_DEBUG "  alloc irq_cfg on cpu %d node %d\n", cpu, node);
        return cfg;
@@ -333,13 +351,14 @@ void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc)
        }
 }
-static void set_extra_move_desc(struct irq_desc *desc, cpumask_t mask)
+static void
+set_extra_move_desc(struct irq_desc *desc, const struct cpumask *mask)
 {
        struct irq_cfg *cfg = desc->chip_data;
        if (!cfg->move_in_progress) {
                /* it means that domain is not changed */
-                if (!cpus_intersects(desc->affinity, mask))
+                if (!cpumask_intersects(&desc->affinity, mask))
                        cfg->move_desc_pending = 1;
        }
 }
@@ -354,7 +373,8 @@ static struct irq_cfg *irq_cfg(unsigned int irq)
 #endif
 #ifndef CONFIG_NUMA_MIGRATE_IRQ_DESC
-static inline void set_extra_move_desc(struct irq_desc *desc, cpumask_t mask)
+static inline void
+set_extra_move_desc(struct irq_desc *desc, const struct cpumask *mask)
 {
 }
 #endif
@@ -485,6 +505,26 @@ static void ioapic_mask_entry(int apic, int pin)
 }
 #ifdef CONFIG_SMP
+static void send_cleanup_vector(struct irq_cfg *cfg)
+{
+        cpumask_var_t cleanup_mask;
+        if (unlikely(!alloc_cpumask_var(&cleanup_mask, GFP_ATOMIC))) {
+                unsigned int i;
+                cfg->move_cleanup_count = 0;
+                for_each_cpu_and(i, cfg->old_domain, cpu_online_mask)
+                        cfg->move_cleanup_count++;
+                for_each_cpu_and(i, cfg->old_domain, cpu_online_mask)
+                        send_IPI_mask(cpumask_of(i), IRQ_MOVE_CLEANUP_VECTOR);
+        } else {
+                cpumask_and(cleanup_mask, cfg->old_domain, cpu_online_mask);
+                cfg->move_cleanup_count = cpumask_weight(cleanup_mask);
+                send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
+                free_cpumask_var(cleanup_mask);
+        }
+        cfg->move_in_progress = 0;
+}
 static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq_cfg *cfg)
 {
        int apic, pin;
@@ -520,41 +560,55 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
        }
 }
-static int assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask);
+static int
+assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask);
-static void set_ioapic_affinity_irq_desc(struct irq_desc *desc, cpumask_t mask)
+/*
+ * Either sets desc->affinity to a valid value, and returns cpu_mask_to_apicid
+ * of that, or returns BAD_APICID and leaves desc->affinity untouched.
+ */
+static unsigned int
+set_desc_affinity(struct irq_desc *desc, const struct cpumask *mask)
 {
        struct irq_cfg *cfg;
-        unsigned long flags;
-        unsigned int dest;
-        cpumask_t tmp;
        unsigned int irq;
-        cpus_and(tmp, mask, cpu_online_map);
+        if (!cpumask_intersects(mask, cpu_online_mask))
-        if (cpus_empty(tmp))
+                return BAD_APICID;
-                return;
        irq = desc->irq;
        cfg = desc->chip_data;
        if (assign_irq_vector(irq, cfg, mask))
-                return;
+                return BAD_APICID;
+        cpumask_and(&desc->affinity, cfg->domain, mask);
        set_extra_move_desc(desc, mask);
+        return cpu_mask_to_apicid_and(&desc->affinity, cpu_online_mask);
+}
-        cpus_and(tmp, cfg->domain, mask);
+static void
-        dest = cpu_mask_to_apicid(tmp);
+set_ioapic_affinity_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
-        /*
+{
-         * Only the high 8 bits are valid.
+        struct irq_cfg *cfg;
-         */
+        unsigned long flags;
-        dest = SET_APIC_LOGICAL_ID(dest);
+        unsigned int dest;
+        unsigned int irq;
+        irq = desc->irq;
+        cfg = desc->chip_data;
        spin_lock_irqsave(&ioapic_lock, flags);
-        __target_IO_APIC_irq(irq, dest, cfg);
+        dest = set_desc_affinity(desc, mask);
-        desc->affinity = mask;
+        if (dest != BAD_APICID) {
+                /* Only the high 8 bits are valid. */
+                dest = SET_APIC_LOGICAL_ID(dest);
+                __target_IO_APIC_irq(irq, dest, cfg);
+        }
        spin_unlock_irqrestore(&ioapic_lock, flags);
 }
-static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
+static void
+set_ioapic_affinity_irq(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc;
@@ -1222,7 +1276,8 @@ void unlock_vector_lock(void)
        spin_unlock(&vector_lock);
 }
-static int __assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
+static int
+__assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
 {
        /*
         * NOTE! The local APIC isn't very good at handling
@@ -1237,49 +1292,49 @@ static int __assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
         */
        static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
        unsigned int old_vector;
-        int cpu;
+        int cpu, err;
+        cpumask_var_t tmp_mask;
        if ((cfg->move_in_progress) || cfg->move_cleanup_count)
                return -EBUSY;
-        /* Only try and allocate irqs on cpus that are present */
+        if (!alloc_cpumask_var(&tmp_mask, GFP_ATOMIC))
-        cpus_and(mask, mask, cpu_online_map);
+                return -ENOMEM;
        old_vector = cfg->vector;
        if (old_vector) {
-                cpumask_t tmp;
+                cpumask_and(tmp_mask, mask, cpu_online_mask);
-                cpus_and(tmp, cfg->domain, mask);
+                cpumask_and(tmp_mask, cfg->domain, tmp_mask);
-                if (!cpus_empty(tmp))
+                if (!cpumask_empty(tmp_mask)) {
+                        free_cpumask_var(tmp_mask);
                        return 0;
+                }
        }
-        for_each_cpu_mask_nr(cpu, mask) {
+        /* Only try and allocate irqs on cpus that are present */
-                cpumask_t domain, new_mask;
+        err = -ENOSPC;
+        for_each_cpu_and(cpu, mask, cpu_online_mask) {
                int new_cpu;
                int vector, offset;
-                domain = vector_allocation_domain(cpu);
+                vector_allocation_domain(cpu, tmp_mask);
-                cpus_and(new_mask, domain, cpu_online_map);
                vector = current_vector;
                offset = current_offset;
 next:
                vector += 8;
                if (vector >= first_system_vector) {
-                        /* If we run out of vectors on large boxen, must share them. */
+                        /* If out of vectors on large boxen, must share them. */
                        offset = (offset + 1) % 8;
                        vector = FIRST_DEVICE_VECTOR + offset;
                }
                if (unlikely(current_vector == vector))
                        continue;
-#ifdef CONFIG_X86_64
-                if (vector == IA32_SYSCALL_VECTOR)
+                if (test_bit(vector, used_vectors))
-                        goto next;
-#else
-                if (vector == SYSCALL_VECTOR)
                        goto next;
-#endif
-                for_each_cpu_mask_nr(new_cpu, new_mask)
+                for_each_cpu_and(new_cpu, tmp_mask, cpu_online_mask)
                        if (per_cpu(vector_irq, new_cpu)[vector] != -1)
                                goto next;
                /* Found one! */
@@ -1287,18 +1342,21 @@ next:
                current_offset = offset;
                if (old_vector) {
                        cfg->move_in_progress = 1;
-                        cfg->old_domain = cfg->domain;
+                        cpumask_copy(cfg->old_domain, cfg->domain);
                }
-                for_each_cpu_mask_nr(new_cpu, new_mask)
+                for_each_cpu_and(new_cpu, tmp_mask, cpu_online_mask)
                        per_cpu(vector_irq, new_cpu)[vector] = irq;
                cfg->vector = vector;
-                cfg->domain = domain;
+                cpumask_copy(cfg->domain, tmp_mask);
-                return 0;
+                err = 0;
+                break;
        }
-        return -ENOSPC;
+        free_cpumask_var(tmp_mask);
+        return err;
 }
-static int assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
+static int
+assign_irq_vector(int irq, struct irq_cfg *cfg, const struct cpumask *mask)
 {
        int err;
        unsigned long flags;
@@ -1311,23 +1369,20 @@ static int assign_irq_vector(int irq, struct irq_cfg *cfg, cpumask_t mask)
 static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
 {
-        cpumask_t mask;
        int cpu, vector;
        BUG_ON(!cfg->vector);
        vector = cfg->vector;
-        cpus_and(mask, cfg->domain, cpu_online_map);
+        for_each_cpu_and(cpu, cfg->domain, cpu_online_mask)
-        for_each_cpu_mask_nr(cpu, mask)
                per_cpu(vector_irq, cpu)[vector] = -1;
        cfg->vector = 0;
-        cpus_clear(cfg->domain);
+        cpumask_clear(cfg->domain);
        if (likely(!cfg->move_in_progress))
                return;
-        cpus_and(mask, cfg->old_domain, cpu_online_map);
+        for_each_cpu_and(cpu, cfg->old_domain, cpu_online_mask) {
-        for_each_cpu_mask_nr(cpu, mask) {
                for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS;
                                                                vector++) {
                        if (per_cpu(vector_irq, cpu)[vector] != irq)
@@ -1350,7 +1405,7 @@ void __setup_vector_irq(int cpu)
        /* Mark the inuse vectors */
        for_each_irq_desc(irq, desc) {
                cfg = desc->chip_data;
-                if (!cpu_isset(cpu, cfg->domain))
+                if (!cpumask_test_cpu(cpu, cfg->domain))
                        continue;
                vector = cfg->vector;
                per_cpu(vector_irq, cpu)[vector] = irq;
@@ -1362,7 +1417,7 @@ void __setup_vector_irq(int cpu)
                        continue;
                cfg = irq_cfg(irq);
-                if (!cpu_isset(cpu, cfg->domain))
+                if (!cpumask_test_cpu(cpu, cfg->domain))
                        per_cpu(vector_irq, cpu)[vector] = -1;
        }
 }
@@ -1498,18 +1553,17 @@ static void setup_IO_APIC_irq(int apic, int pin, unsigned int irq, struct irq_de
 {
        struct irq_cfg *cfg;
        struct IO_APIC_route_entry entry;
-        cpumask_t mask;
+        unsigned int dest;
        if (!IO_APIC_IRQ(irq))
                return;
        cfg = desc->chip_data;
-        mask = TARGET_CPUS;
+        if (assign_irq_vector(irq, cfg, TARGET_CPUS))
-        if (assign_irq_vector(irq, cfg, mask))
                return;
-        cpus_and(mask, cfg->domain, mask);
+        dest = cpu_mask_to_apicid_and(cfg->domain, TARGET_CPUS);
        apic_printk(APIC_VERBOSE,KERN_DEBUG
                    "IOAPIC[%d]: Set routing entry (%d-%d -> 0x%x -> "
@@ -1519,8 +1573,7 @@ static void setup_IO_APIC_irq(int apic, int pin, unsigned int irq, struct irq_de
        if (setup_ioapic_entry(mp_ioapics[apic].mp_apicid, irq, &entry,
-                               cpu_mask_to_apicid(mask), trigger, polarity,
+                               dest, trigger, polarity, cfg->vector)) {
-                               cfg->vector)) {
                printk("Failed to setup ioapic entry for ioapic  %d, pin %d\n",
                       mp_ioapics[apic].mp_apicid, pin);
                __clear_irq_vector(irq, cfg);
@@ -2240,7 +2293,7 @@ static int ioapic_retrigger_irq(unsigned int irq)
        unsigned long flags;
        spin_lock_irqsave(&vector_lock, flags);
-        send_IPI_mask(cpumask_of_cpu(first_cpu(cfg->domain)), cfg->vector);
+        send_IPI_mask(cpumask_of(cpumask_first(cfg->domain)), cfg->vector);
        spin_unlock_irqrestore(&vector_lock, flags);
        return 1;
@@ -2289,18 +2342,17 @@ static DECLARE_DELAYED_WORK(ir_migration_work, ir_irq_migration);
 * as simple as edge triggered migration and we can do the irq migration
 * with a simple atomic update to IO-APIC RTE.
 */
-static void migrate_ioapic_irq_desc(struct irq_desc *desc, cpumask_t mask)
+static void
+migrate_ioapic_irq_desc(struct irq_desc *desc, const struct cpumask *mask)
 {
        struct irq_cfg *cfg;
-        cpumask_t tmp, cleanup_mask;
        struct irte irte;
        int modify_ioapic_rte;
        unsigned int dest;
        unsigned long flags;
        unsigned int irq;
-        cpus_and(tmp, mask, cpu_online_map);
+        if (!cpumask_intersects(mask, cpu_online_mask))
-        if (cpus_empty(tmp))
                return;
        irq = desc->irq;
@@ -2313,8 +2365,7 @@ static void migrate_ioapic_irq_desc(struct irq_desc *desc, cpumask_t mask)
        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
+        dest = cpu_mask_to_apicid_and(cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        modify_ioapic_rte = desc->status & IRQ_LEVEL;
        if (modify_ioapic_rte) {
@@ -2331,14 +2382,10 @@ static void migrate_ioapic_irq_desc(struct irq_desc *desc, cpumask_t mask)
         */
        modify_irte(irq, &irte);
-        if (cfg->move_in_progress) {
+        if (cfg->move_in_progress)
-                cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
+                send_cleanup_vector(cfg);
-                cfg->move_cleanup_count = cpus_weight(cleanup_mask);
-                send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
-                cfg->move_in_progress = 0;
-        }
-        desc->affinity = mask;
+        cpumask_copy(&desc->affinity, mask);
 }
 static int migrate_irq_remapped_level_desc(struct irq_desc *desc)
@@ -2360,11 +2407,11 @@ static int migrate_irq_remapped_level_desc(struct irq_desc *desc)
        }
        /* everthing is clear. we have right of way */
-        migrate_ioapic_irq_desc(desc, desc->pending_mask);
+        migrate_ioapic_irq_desc(desc, &desc->pending_mask);
        ret = 0;
        desc->status &= ~IRQ_MOVE_PENDING;
-        cpus_clear(desc->pending_mask);
+        cpumask_clear(&desc->pending_mask);
 unmask:
        unmask_IO_APIC_irq_desc(desc);
@@ -2389,7 +2436,7 @@ static void ir_irq_migration(struct work_struct *work)
                                continue;
                        }
-                        desc->chip->set_affinity(irq, desc->pending_mask);
+                        desc->chip->set_affinity(irq, &desc->pending_mask);
                        spin_unlock_irqrestore(&desc->lock, flags);
                }
        }
@@ -2398,18 +2445,20 @@ static void ir_irq_migration(struct work_struct *work)
 /*
 * Migrates the IRQ destination in the process context.
 */
-static void set_ir_ioapic_affinity_irq_desc(struct irq_desc *desc, cpumask_t mask)
+static void set_ir_ioapic_affinity_irq_desc(struct irq_desc *desc,
+                                            const struct cpumask *mask)
 {
        if (desc->status & IRQ_LEVEL) {
                desc->status |= IRQ_MOVE_PENDING;
-                desc->pending_mask = mask;
+                cpumask_copy(&desc->pending_mask, mask);
                migrate_irq_remapped_level_desc(desc);
                return;
        }
        migrate_ioapic_irq_desc(desc, mask);
 }
-static void set_ir_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
+static void set_ir_ioapic_affinity_irq(unsigned int irq,
+                                       const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
@@ -2444,7 +2493,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
                if (!cfg->move_cleanup_count)
                        goto unlock;
-                if ((vector == cfg->vector) && cpu_isset(me, cfg->domain))
+                if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
                        goto unlock;
                __get_cpu_var(vector_irq)[vector] = -1;
@@ -2481,20 +2530,14 @@ static void irq_complete_move(struct irq_desc **descp)
        vector = ~get_irq_regs()->orig_ax;
        me = smp_processor_id();
-        if ((vector == cfg->vector) && cpu_isset(me, cfg->domain)) {
-                cpumask_t cleanup_mask;
 #ifdef CONFIG_NUMA_MIGRATE_IRQ_DESC
                *descp = desc = move_irq_desc(desc, me);
                /* get the new one */
                cfg = desc->chip_data;
 #endif
-                cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
+        if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
-                cfg->move_cleanup_count = cpus_weight(cleanup_mask);
+                send_cleanup_vector(cfg);
-                send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
-                cfg->move_in_progress = 0;
-        }
 }
 #else
 static inline void irq_complete_move(struct irq_desc **descp) {}
@@ -3216,16 +3259,13 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
        struct irq_cfg *cfg;
        int err;
        unsigned dest;
-        cpumask_t tmp;
        cfg = irq_cfg(irq);
-        tmp = TARGET_CPUS;
+        err = assign_irq_vector(irq, cfg, TARGET_CPUS);
-        err = assign_irq_vector(irq, cfg, tmp);
        if (err)
                return err;
-        cpus_and(tmp, cfg->domain, tmp);
+        dest = cpu_mask_to_apicid_and(cfg->domain, TARGET_CPUS);
-        dest = cpu_mask_to_apicid(tmp);
 #ifdef CONFIG_INTR_REMAP
        if (irq_remapped(irq)) {
@@ -3279,26 +3319,18 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
 }
 #ifdef CONFIG_SMP
-static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
+static void set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        struct irq_cfg *cfg;
        struct msi_msg msg;
        unsigned int dest;
-        cpumask_t tmp;
-        cpus_and(tmp, mask, cpu_online_map);
+        dest = set_desc_affinity(desc, mask);
-        if (cpus_empty(tmp))
+        if (dest == BAD_APICID)
                return;
        cfg = desc->chip_data;
-        if (assign_irq_vector(irq, cfg, mask))
-                return;
-        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        read_msi_msg_desc(desc, &msg);
@@ -3308,37 +3340,27 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
        msg.address_lo |= MSI_ADDR_DEST_ID(dest);
        write_msi_msg_desc(desc, &msg);
-        desc->affinity = mask;
 }
 #ifdef CONFIG_INTR_REMAP
 /*
 * Migrate the MSI irq to another cpumask. This migration is
 * done in the process context using interrupt-remapping hardware.
 */
-static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
+static void
+ir_set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
-        struct irq_cfg *cfg;
+        struct irq_cfg *cfg = desc->chip_data;
        unsigned int dest;
-        cpumask_t tmp, cleanup_mask;
        struct irte irte;
-        cpus_and(tmp, mask, cpu_online_map);
-        if (cpus_empty(tmp))
-                return;
        if (get_irte(irq, &irte))
                return;
-        cfg = desc->chip_data;
+        dest = set_desc_affinity(desc, mask);
-        if (assign_irq_vector(irq, cfg, mask))
+        if (dest == BAD_APICID)
                return;
-        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        irte.vector = cfg->vector;
        irte.dest_id = IRTE_DEST(dest);
@@ -3352,14 +3374,8 @@ static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
         * at the new destination. So, time to cleanup the previous
         * vector allocation.
         */
-        if (cfg->move_in_progress) {
+        if (cfg->move_in_progress)
-                cpus_and(cleanup_mask, cfg->old_domain, cpu_online_map);
+                send_cleanup_vector(cfg);
-                cfg->move_cleanup_count = cpus_weight(cleanup_mask);
-                send_IPI_mask(cleanup_mask, IRQ_MOVE_CLEANUP_VECTOR);
-                cfg->move_in_progress = 0;
-        }
-        desc->affinity = mask;
 }
 #endif
@@ -3550,26 +3566,18 @@ void arch_teardown_msi_irq(unsigned int irq)
 #ifdef CONFIG_DMAR
 #ifdef CONFIG_SMP
-static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
+static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        struct irq_cfg *cfg;
        struct msi_msg msg;
        unsigned int dest;
-        cpumask_t tmp;
-        cpus_and(tmp, mask, cpu_online_map);
+        dest = set_desc_affinity(desc, mask);
-        if (cpus_empty(tmp))
+        if (dest == BAD_APICID)
                return;
        cfg = desc->chip_data;
-        if (assign_irq_vector(irq, cfg, mask))
-                return;
-        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        dmar_msi_read(irq, &msg);
@@ -3579,7 +3587,6 @@ static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
        msg.address_lo |= MSI_ADDR_DEST_ID(dest);
        dmar_msi_write(irq, &msg);
-        desc->affinity = mask;
 }
 #endif /* CONFIG_SMP */
@@ -3613,26 +3620,18 @@ int arch_setup_dmar_msi(unsigned int irq)
 #ifdef CONFIG_HPET_TIMER
 #ifdef CONFIG_SMP
-static void hpet_msi_set_affinity(unsigned int irq, cpumask_t mask)
+static void hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        struct irq_cfg *cfg;
        struct msi_msg msg;
        unsigned int dest;
-        cpumask_t tmp;
-        cpus_and(tmp, mask, cpu_online_map);
+        dest = set_desc_affinity(desc, mask);
-        if (cpus_empty(tmp))
+        if (dest == BAD_APICID)
                return;
        cfg = desc->chip_data;
-        if (assign_irq_vector(irq, cfg, mask))
-                return;
-        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        hpet_msi_read(irq, &msg);
@@ -3642,7 +3641,6 @@ static void hpet_msi_set_affinity(unsigned int irq, cpumask_t mask)
        msg.address_lo |= MSI_ADDR_DEST_ID(dest);
        hpet_msi_write(irq, &msg);
-        desc->affinity = mask;
 }
 #endif /* CONFIG_SMP */
@@ -3697,28 +3695,19 @@ static void target_ht_irq(unsigned int irq, unsigned int dest, u8 vector)
        write_ht_irq_msg(irq, &msg);
 }
-static void set_ht_irq_affinity(unsigned int irq, cpumask_t mask)
+static void set_ht_irq_affinity(unsigned int irq, const struct cpumask *mask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        struct irq_cfg *cfg;
        unsigned int dest;
-        cpumask_t tmp;
-        cpus_and(tmp, mask, cpu_online_map);
+        dest = set_desc_affinity(desc, mask);
-        if (cpus_empty(tmp))
+        if (dest == BAD_APICID)
                return;
        cfg = desc->chip_data;
-        if (assign_irq_vector(irq, cfg, mask))
-                return;
-        set_extra_move_desc(desc, mask);
-        cpus_and(tmp, cfg->domain, mask);
-        dest = cpu_mask_to_apicid(tmp);
        target_ht_irq(irq, dest, cfg->vector);
-        desc->affinity = mask;
 }
 #endif
@@ -3738,17 +3727,14 @@ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
 {
        struct irq_cfg *cfg;
        int err;
-        cpumask_t tmp;
        cfg = irq_cfg(irq);
-        tmp = TARGET_CPUS;
+        err = assign_irq_vector(irq, cfg, TARGET_CPUS);
-        err = assign_irq_vector(irq, cfg, tmp);
        if (!err) {
                struct ht_irq_msg msg;
                unsigned dest;
-                cpus_and(tmp, cfg->domain, tmp);
+                dest = cpu_mask_to_apicid_and(cfg->domain, TARGET_CPUS);
-                dest = cpu_mask_to_apicid(tmp);
                msg.address_hi = HT_IRQ_HIGH_DEST_ID(dest);
@@ -3784,7 +3770,7 @@ int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
 int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
                       unsigned long mmr_offset)
 {
-        const cpumask_t *eligible_cpu = get_cpu_mask(cpu);
+        const struct cpumask *eligible_cpu = cpumask_of(cpu);
        struct irq_cfg *cfg;
        int mmr_pnode;
        unsigned long mmr_value;
@@ -3794,7 +3780,7 @@ int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
        cfg = irq_cfg(irq);
-        err = assign_irq_vector(irq, cfg, *eligible_cpu);
+        err = assign_irq_vector(irq, cfg, eligible_cpu);
        if (err != 0)
                return err;
@@ -3813,7 +3799,7 @@ int arch_enable_uv_irq(char *irq_name, unsigned int irq, int cpu, int mmr_blade,
        entry->polarity = 0;
        entry->trigger = 0;
        entry->mask = 0;
-        entry->dest = cpu_mask_to_apicid(*eligible_cpu);
+        entry->dest = cpu_mask_to_apicid(eligible_cpu);
        mmr_pnode = uv_blade_to_pnode(mmr_blade);
        uv_write_global_mmr64(mmr_pnode, mmr_offset, mmr_value);
@@ -4024,7 +4010,7 @@ void __init setup_ioapic_dest(void)
        int pin, ioapic, irq, irq_entry;
        struct irq_desc *desc;
        struct irq_cfg *cfg;
-        cpumask_t mask;
+        const struct cpumask *mask;
        if (skip_ioapic_setup == 1)
                return;
@@ -4055,7 +4041,7 @@ void __init setup_ioapic_dest(void)
                         */
                        if (desc->status &
                            (IRQ_NO_BALANCING | IRQ_AFFINITY_SET))
-                                mask = desc->affinity;
+                                mask = &desc->affinity;
                        else
                                mask = TARGET_CPUS;
diff --git a/arch/x86/kernel/ipi.c b/arch/x86/kernel/ipi.c
index f1c688e46f35..285bbf8831fa 100644
--- a/arch/x86/kernel/ipi.c
+++ b/arch/x86/kernel/ipi.c
@@ -116,18 +116,18 @@ static inline void __send_IPI_dest_field(unsigned long mask, int vector)
 /*
 * This is only used on smaller machines.
 */
-void send_IPI_mask_bitmask(cpumask_t cpumask, int vector)
+void send_IPI_mask_bitmask(const struct cpumask *cpumask, int vector)
 {
-        unsigned long mask = cpus_addr(cpumask)[0];
+        unsigned long mask = cpumask_bits(cpumask)[0];
        unsigned long flags;
        local_irq_save(flags);
-        WARN_ON(mask & ~cpus_addr(cpu_online_map)[0]);
+        WARN_ON(mask & ~cpumask_bits(cpu_online_mask)[0]);
        __send_IPI_dest_field(mask, vector);
        local_irq_restore(flags);
 }
-void send_IPI_mask_sequence(cpumask_t mask, int vector)
+void send_IPI_mask_sequence(const struct cpumask *mask, int vector)
 {
        unsigned long flags;
        unsigned int query_cpu;
@@ -139,12 +139,24 @@ void send_IPI_mask_sequence(cpumask_t mask, int vector)
         */
        local_irq_save(flags);
-        for_each_possible_cpu(query_cpu) {
+        for_each_cpu(query_cpu, mask)
-                if (cpu_isset(query_cpu, mask)) {
+                __send_IPI_dest_field(cpu_to_logical_apicid(query_cpu), vector);
+        local_irq_restore(flags);
+}
+void send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
+{
+        unsigned long flags;
+        unsigned int query_cpu;
+        unsigned int this_cpu = smp_processor_id();
+        /* See Hack comment above */
+        local_irq_save(flags);
+        for_each_cpu(query_cpu, mask)
+                if (query_cpu != this_cpu)
                        __send_IPI_dest_field(cpu_to_logical_apicid(query_cpu),
                                              vector);
-                }
-        }
        local_irq_restore(flags);
 }
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 3f1d9d18df67..bce53e1352a0 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -9,6 +9,7 @@
 #include <asm/apic.h>
 #include <asm/io_apic.h>
 #include <asm/smp.h>
+#include <asm/irq.h>
 atomic_t irq_err_count;
@@ -190,3 +191,5 @@ u64 arch_irq_stat(void)
 #endif
        return sum;
 }
+EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index 119fc9c8ff7f..9dc5588f336a 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -233,27 +233,28 @@ unsigned int do_IRQ(struct pt_regs *regs)
 #ifdef CONFIG_HOTPLUG_CPU
 #include <mach_apic.h>
-void fixup_irqs(cpumask_t map)
+/* A cpu has been removed from cpu_online_mask.  Reset irq affinities. */
+void fixup_irqs(void)
 {
        unsigned int irq;
        static int warned;
        struct irq_desc *desc;
        for_each_irq_desc(irq, desc) {
-                cpumask_t mask;
+                const struct cpumask *affinity;
                if (!desc)
                        continue;
                if (irq == 2)
                        continue;
-                cpus_and(mask, desc->affinity, map);
+                affinity = &desc->affinity;
-                if (any_online_cpu(mask) == NR_CPUS) {
+                if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
                        printk("Breaking affinity for irq %i\n", irq);
-                        mask = map;
+                        affinity = cpu_all_mask;
                }
                if (desc->chip->set_affinity)
-                        desc->chip->set_affinity(irq, mask);
+                        desc->chip->set_affinity(irq, affinity);
                else if (desc->action && !(warned++))
                        printk("Cannot set affinity for irq %i\n", irq);
        }
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index a174a217eb1a..6383d50f82ea 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -80,16 +80,17 @@ asmlinkage unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
 }
 #ifdef CONFIG_HOTPLUG_CPU
-void fixup_irqs(cpumask_t map)
+/* A cpu has been removed from cpu_online_mask.  Reset irq affinities. */
+void fixup_irqs(void)
 {
        unsigned int irq;
        static int warned;
        struct irq_desc *desc;
        for_each_irq_desc(irq, desc) {
-                cpumask_t mask;
                int break_affinity = 0;
                int set_affinity = 1;
+                const struct cpumask *affinity;
                if (!desc)
                        continue;
@@ -99,23 +100,23 @@ void fixup_irqs(cpumask_t map)
                /* interrupt's are disabled at this point */
                spin_lock(&desc->lock);
+                affinity = &desc->affinity;
                if (!irq_has_action(irq) ||
-                    cpus_equal(desc->affinity, map)) {
+                    cpumask_equal(affinity, cpu_online_mask)) {
                        spin_unlock(&desc->lock);
                        continue;
                }
-                cpus_and(mask, desc->affinity, map);
+                if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
-                if (cpus_empty(mask)) {
                        break_affinity = 1;
-                        mask = map;
+                        affinity = cpu_all_mask;
                }
                if (desc->chip->mask)
                        desc->chip->mask(irq);
                if (desc->chip->set_affinity)
-                        desc->chip->set_affinity(irq, mask);
+                        desc->chip->set_affinity(irq, affinity);
                else if (!(warned++))
                        set_affinity = 0;
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index 203384ed2b5d..84723295f88a 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -110,6 +110,18 @@ DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
        [IRQ15_VECTOR + 1 ... NR_VECTORS - 1] = -1
 };
+int vector_used_by_percpu_irq(unsigned int vector)
+{
+        int cpu;
+        for_each_online_cpu(cpu) {
+                if (per_cpu(vector_irq, cpu)[vector] != -1)
+                        return 1;
+        }
+        return 0;
+}
 /* Overridden in paravirt.c */
 void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
@@ -146,10 +158,12 @@ void __init native_init_IRQ(void)
        alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
        /* IPI for single call function */
-        set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR, call_function_single_interrupt);
+        alloc_intr_gate(CALL_FUNCTION_SINGLE_VECTOR,
+                                 call_function_single_interrupt);
        /* Low priority IPI to cleanup after moving an irq */
        set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);
+        set_bit(IRQ_MOVE_CLEANUP_VECTOR, used_vectors);
 #endif
 #ifdef CONFIG_X86_LOCAL_APIC
diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index 6190e6ef546c..31ebfe38e96c 100644
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -69,6 +69,18 @@ DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
        [IRQ15_VECTOR + 1 ... NR_VECTORS - 1] = -1
 };
+int vector_used_by_percpu_irq(unsigned int vector)
+{
+        int cpu;
+        for_each_online_cpu(cpu) {
+                if (per_cpu(vector_irq, cpu)[vector] != -1)
+                        return 1;
+        }
+        return 0;
+}
 void __init init_ISA_irqs(void)
 {
        int i;
@@ -121,6 +133,7 @@ static void __init smp_intr_init(void)
        /* Low priority IPI to cleanup after moving an irq */
        set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);
+        set_bit(IRQ_MOVE_CLEANUP_VECTOR, used_vectors);
 #endif
 }
diff --git a/arch/x86/kernel/mfgpt_32.c b/arch/x86/kernel/mfgpt_32.c
index 3b599518c322..c12314c9e86f 100644
--- a/arch/x86/kernel/mfgpt_32.c
+++ b/arch/x86/kernel/mfgpt_32.c
@@ -287,7 +287,7 @@ static struct clock_event_device mfgpt_clockevent = {
        .set_mode = mfgpt_set_mode,
        .set_next_event = mfgpt_next_event,
        .rating = 250,
-        .cpumask = CPU_MASK_ALL,
+        .cpumask = cpu_all_mask,
        .shift = 32
 };
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 72e0e4e712d6..39643b1df061 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -650,10 +650,7 @@ static int crash_nmi_callback(struct notifier_block *self,
 static void smp_send_nmi_allbutself(void)
 {
-        cpumask_t mask = cpu_online_map;
+        send_IPI_allbutself(NMI_VECTOR);
-        cpu_clear(safe_smp_processor_id(), mask);
-        if (!cpus_empty(mask))
-                send_IPI_mask(mask, NMI_VECTOR);
 }
 static struct notifier_block crash_nmi_nb = {
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index ae0c0d3bb770..0b63b08e7530 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -152,6 +152,11 @@ void __init setup_per_cpu_areas(void)
        old_size = PERCPU_ENOUGH_ROOM;
        align = max_t(unsigned long, PAGE_SIZE, align);
        size = roundup(old_size, align);
+        printk(KERN_INFO
+                "NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%d nr_node_ids:%d\n",
+                NR_CPUS, nr_cpumask_bits, nr_cpu_ids, nr_node_ids);
        printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
                          size);
@@ -168,24 +173,24 @@ void __init setup_per_cpu_areas(void)
                               "cpu %d has no node %d or node-local memory\n",
                                cpu, node);
                        if (ptr)
-                                printk(KERN_DEBUG "per cpu data for cpu%d at %016lx\n",
+                                printk(KERN_DEBUG
+                                        "per cpu data for cpu%d at %016lx\n",
                                         cpu, __pa(ptr));
                }
                else {
                        ptr = __alloc_bootmem_node(NODE_DATA(node), size, align,
                                                        __pa(MAX_DMA_ADDRESS));
                        if (ptr)
-                                printk(KERN_DEBUG "per cpu data for cpu%d on node%d at %016lx\n",
+                                printk(KERN_DEBUG
-                                         cpu, node, __pa(ptr));
+                                        "per cpu data for cpu%d on node%d "
+                                        "at %016lx\n",
+                                        cpu, node, __pa(ptr));
                }
 #endif
                per_cpu_offset(cpu) = ptr - __per_cpu_start;
                memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
        }
-        printk(KERN_DEBUG "NR_CPUS: %d, nr_cpu_ids: %d, nr_node_ids %d\n",
-                NR_CPUS, nr_cpu_ids, nr_node_ids);
        /* Setup percpu data maps */
        setup_per_cpu_maps();
@@ -282,7 +287,7 @@ static void __cpuinit numa_set_cpumask(int cpu, int enable)
        else
                cpu_clear(cpu, *mask);
-        cpulist_scnprintf(buf, sizeof(buf), *mask);
+        cpulist_scnprintf(buf, sizeof(buf), mask);
        printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n",
                enable? "numa_add_cpu":"numa_remove_cpu", cpu, node, buf);
 }
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index 7e558db362c1..beea2649a240 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -118,22 +118,22 @@ static void native_smp_send_reschedule(int cpu)
                WARN_ON(1);
                return;
        }
-        send_IPI_mask(cpumask_of_cpu(cpu), RESCHEDULE_VECTOR);
+        send_IPI_mask(cpumask_of(cpu), RESCHEDULE_VECTOR);
 }
 void native_send_call_func_single_ipi(int cpu)
 {
-        send_IPI_mask(cpumask_of_cpu(cpu), CALL_FUNCTION_SINGLE_VECTOR);
+        send_IPI_mask(cpumask_of(cpu), CALL_FUNCTION_SINGLE_VECTOR);
 }
-void native_send_call_func_ipi(cpumask_t mask)
+void native_send_call_func_ipi(const struct cpumask *mask)
 {
        cpumask_t allbutself;
        allbutself = cpu_online_map;
        cpu_clear(smp_processor_id(), allbutself);
-        if (cpus_equal(mask, allbutself) &&
+        if (cpus_equal(*mask, allbutself) &&
            cpus_equal(cpu_online_map, cpu_callout_map))
                send_IPI_allbutself(CALL_FUNCTION_VECTOR);
        else
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index f8500c969442..31869bf5fabd 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -102,14 +102,8 @@ EXPORT_SYMBOL(smp_num_siblings);
 /* Last level cache ID of each logical CPU */
 DEFINE_PER_CPU(u16, cpu_llc_id) = BAD_APICID;
-/* bitmap of online cpus */
-cpumask_t cpu_online_map __read_mostly;
-EXPORT_SYMBOL(cpu_online_map);
 cpumask_t cpu_callin_map;
 cpumask_t cpu_callout_map;
-cpumask_t cpu_possible_map;
-EXPORT_SYMBOL(cpu_possible_map);
 /* representing HT siblings of each logical CPU */
 DEFINE_PER_CPU(cpumask_t, cpu_sibling_map);
@@ -1260,6 +1254,15 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
        check_nmi_watchdog();
 }
+static int __initdata setup_possible_cpus = -1;
+static int __init _setup_possible_cpus(char *str)
+{
+        get_option(&str, &setup_possible_cpus);
+        return 0;
+}
+early_param("possible_cpus", _setup_possible_cpus);
 /*
 * cpu_possible_map should be static, it cannot change as cpu's
 * are onlined, or offlined. The reason is per-cpu data-structures
@@ -1272,7 +1275,7 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
 *
 * Three ways to find out the number of additional hotplug CPUs:
 * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
- * - The user can overwrite it with additional_cpus=NUM
+ * - The user can overwrite it with possible_cpus=NUM
 * - Otherwise don't reserve additional CPUs.
 * We do this because additional CPUs waste a lot of memory.
 * -AK
@@ -1285,9 +1288,17 @@ __init void prefill_possible_map(void)
        if (!num_processors)
                num_processors = 1;
-        possible = num_processors + disabled_cpus;
+        if (setup_possible_cpus == -1)
-        if (possible > NR_CPUS)
+                possible = num_processors + disabled_cpus;
-                possible = NR_CPUS;
+        else
+                possible = setup_possible_cpus;
+        if (possible > CONFIG_NR_CPUS) {
+                printk(KERN_WARNING
+                        "%d Processors exceeds NR_CPUS limit of %d\n",
+                        possible, CONFIG_NR_CPUS);
+                possible = CONFIG_NR_CPUS;
+        }
        printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
                possible, max_t(int, possible - num_processors, 0));
@@ -1352,7 +1363,7 @@ void cpu_disable_common(void)
        lock_vector_lock();
        remove_cpu_from_maps(cpu);
        unlock_vector_lock();
-        fixup_irqs(cpu_online_map);
+        fixup_irqs();
 }
 int native_cpu_disable(void)
diff --git a/arch/x86/kernel/tlb_32.c b/arch/x86/kernel/tlb_32.c
index 8da059f949be..ce5054642247 100644
--- a/arch/x86/kernel/tlb_32.c
+++ b/arch/x86/kernel/tlb_32.c
@@ -163,7 +163,7 @@ void native_flush_tlb_others(const cpumask_t *cpumaskp, struct mm_struct *mm,
         * We have to send the IPI only to
         * CPUs affected.
         */
-        send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR);
+        send_IPI_mask(&cpumask, INVALIDATE_TLB_VECTOR);
        while (!cpus_empty(flush_cpumask))
                /* nothing. lockup detection does not belong here */
diff --git a/arch/x86/kernel/tlb_64.c b/arch/x86/kernel/tlb_64.c
index 29887d7081a9..f8be6f1d2e48 100644
--- a/arch/x86/kernel/tlb_64.c
+++ b/arch/x86/kernel/tlb_64.c
@@ -191,7 +191,7 @@ void native_flush_tlb_others(const cpumask_t *cpumaskp, struct mm_struct *mm,
         * We have to send the IPI only to
         * CPUs affected.
         */
-        send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR_START + sender);
+        send_IPI_mask(&cpumask, INVALIDATE_TLB_VECTOR_START + sender);
        while (!cpus_empty(f->flush_cpumask))
                cpu_relax();
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 141907ab6e22..2d1f4c7e4052 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -72,9 +72,6 @@
 #include "cpu/mcheck/mce.h"
-DECLARE_BITMAP(used_vectors, NR_VECTORS);
-EXPORT_SYMBOL_GPL(used_vectors);
 asmlinkage int system_call(void);
 /* Do we ignore FPU interrupts ? */
@@ -89,6 +86,9 @@ gate_desc idt_table[256]
        __attribute__((__section__(".data.idt"))) = { { { { 0, 0 } } }, };
 #endif
+DECLARE_BITMAP(used_vectors, NR_VECTORS);
+EXPORT_SYMBOL_GPL(used_vectors);
 static int ignore_nmis;
 static inline void conditional_sti(struct pt_regs *regs)
@@ -941,9 +941,7 @@ dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code)
 void __init trap_init(void)
 {
-#ifdef CONFIG_X86_32
        int i;
-#endif
 #ifdef CONFIG_EISA
        void __iomem *p = early_ioremap(0x0FFFD9, 4);
@@ -1000,11 +998,15 @@ void __init trap_init(void)
        }
        set_system_trap_gate(SYSCALL_VECTOR, &system_call);
+#endif
        /* Reserve all the builtin and the syscall vector: */
        for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
                set_bit(i, used_vectors);
+#ifdef CONFIG_X86_64
+        set_bit(IA32_SYSCALL_VECTOR, used_vectors);
+#else
        set_bit(SYSCALL_VECTOR, used_vectors);
 #endif
        /*
diff --git a/arch/x86/kernel/vmiclock_32.c b/arch/x86/kernel/vmiclock_32.c
index 254ee07f8635..c4c1f9e09402 100644
--- a/arch/x86/kernel/vmiclock_32.c
+++ b/arch/x86/kernel/vmiclock_32.c
@@ -226,7 +226,7 @@ static void __devinit vmi_time_init_clockevent(void)
        /* Upper bound is clockevent's use of ulong for cycle deltas. */
        evt->max_delta_ns = clockevent_delta2ns(ULONG_MAX, evt);
        evt->min_delta_ns = clockevent_delta2ns(1, evt);
-        evt->cpumask = cpumask_of_cpu(cpu);
+        evt->cpumask = cpumask_of(cpu);
        printk(KERN_WARNING "vmi: registering clock event %s. mult=%lu shift=%u\n",
               evt->name, evt->mult, evt->shift);
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index 50a779264bb1..a7ed208f81e3 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -738,7 +738,7 @@ static void lguest_time_init(void)
        /* We can't set cpumask in the initializer: damn C limitations!  Set it
         * here and register our timer device. */
-        lguest_clockevent.cpumask = cpumask_of_cpu(0);
+        lguest_clockevent.cpumask = cpumask_of(0);
        clockevents_register_device(&lguest_clockevent);
        /* Finally, we unblock the timer interrupt. */
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 3624a364b7f3..bc4c7840b2a8 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -42,9 +42,10 @@ static const struct dmi_system_id bigsmp_dmi_table[] = {
         { }
 };
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
 {
-        return cpumask_of_cpu(cpu);
+        cpus_clear(*retmask);
+        cpu_set(cpu, *retmask);
 }
 static int probe_bigsmp(void)
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index 7b4e6d0d1690..4ba5ccaa1584 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -87,7 +87,7 @@ static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 }
 #endif
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
 {
        /* Careful. Some cpus do not strictly honor the set of cpus
         * specified in the interrupt destination when using lowest
@@ -97,8 +97,7 @@ static cpumask_t vector_allocation_domain(int cpu)
         * deliver interrupts to the wrong hyperthread when only one
         * hyperthread was specified in the interrupt desitination.
         */
-        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
-        return domain;
 }
 struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index 71a309b122e6..511d7941364f 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -38,7 +38,7 @@ static int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
        return 0;
 }
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
 {
        /* Careful. Some cpus do not strictly honor the set of cpus
         * specified in the interrupt destination when using lowest
@@ -48,8 +48,7 @@ static cpumask_t vector_allocation_domain(int cpu)
         * deliver interrupts to the wrong hyperthread when only one
         * hyperthread was specified in the interrupt desitination.
         */
-        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
-        return domain;
 }
 struct genapic apic_numaq = APIC_INIT("NUMAQ", probe_numaq);
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 2c6d234e0009..2821ffc188b5 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -24,7 +24,7 @@ static int probe_summit(void)
        return 0;
 }
-static cpumask_t vector_allocation_domain(int cpu)
+static void vector_allocation_domain(int cpu, cpumask_t *retmask)
 {
        /* Careful. Some cpus do not strictly honor the set of cpus
         * specified in the interrupt destination when using lowest
@@ -34,8 +34,7 @@ static cpumask_t vector_allocation_domain(int cpu)
         * deliver interrupts to the wrong hyperthread when only one
         * hyperthread was specified in the interrupt desitination.
         */
-        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
-        return domain;
 }
 struct genapic apic_summit = APIC_INIT("summit", probe_summit);
diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 52145007bd7e..a5bc05492b1e 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -63,11 +63,6 @@ static int voyager_extended_cpus = 1;
 /* Used for the invalidate map that's also checked in the spinlock */
 static volatile unsigned long smp_invalidate_needed;
-/* Bitmask of currently online CPUs - used by setup.c for
-   /proc/cpuinfo, visible externally but still physical */
-cpumask_t cpu_online_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_online_map);
 /* Bitmask of CPUs present in the system - exported by i386_syms.c, used
 * by scheduler but indexed physically */
 cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
@@ -218,8 +213,6 @@ static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 /* This is for the new dynamic CPU boot code */
 cpumask_t cpu_callin_map = CPU_MASK_NONE;
 cpumask_t cpu_callout_map = CPU_MASK_NONE;
-cpumask_t cpu_possible_map = CPU_MASK_NONE;
-EXPORT_SYMBOL(cpu_possible_map);
 /* The per processor IRQ masks (these are usually kept in sync) */
 static __u16 vic_irq_mask[NR_CPUS] __cacheline_aligned;
@@ -679,7 +672,7 @@ void __init smp_boot_cpus(void)
        /* loop over all the extended VIC CPUs and boot them.  The
         * Quad CPUs must be bootstrapped by their extended VIC cpu */
-        for (i = 0; i < NR_CPUS; i++) {
+        for (i = 0; i < nr_cpu_ids; i++) {
                if (i == boot_cpu_id || !cpu_isset(i, phys_cpu_present_map))
                        continue;
                do_boot_cpu(i);
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index cebcbf152d46..71a14f89f89e 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -278,7 +278,7 @@ void __init numa_init_array(void)
        int rr, i;
        rr = first_node(node_online_map);
-        for (i = 0; i < NR_CPUS; i++) {
+        for (i = 0; i < nr_cpu_ids; i++) {
                if (early_cpu_to_node(i) != NUMA_NO_NODE)
                        continue;
                numa_set_node(i, rr);
@@ -549,7 +549,7 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn)
        memnodemap[0] = 0;
        node_set_online(0);
        node_set(0, node_possible_map);
-        for (i = 0; i < NR_CPUS; i++)
+        for (i = 0; i < nr_cpu_ids; i++)
                numa_set_node(i, 0);
        e820_register_active_regions(0, start_pfn, last_pfn);
        setup_node_bootmem(0, start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT);
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 51c0a2fc14fe..09737c8af074 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -382,7 +382,7 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
                if (!node_online(i))
                        setup_node_bootmem(i, nodes[i].start, nodes[i].end);
-        for (i = 0; i < NR_CPUS; i++) {
+        for (i = 0; i < nr_cpu_ids; i++) {
                int node = early_cpu_to_node(i);
                if (node == NUMA_NO_NODE)
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 773d68d3e912..503c240e26c7 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1082,7 +1082,7 @@ static void drop_other_mm_ref(void *info)
 static void xen_drop_mm_ref(struct mm_struct *mm)
 {
-        cpumask_t mask;
+        cpumask_var_t mask;
        unsigned cpu;
        if (current->active_mm == mm) {
@@ -1094,7 +1094,16 @@ static void xen_drop_mm_ref(struct mm_struct *mm)
        }
        /* Get the "official" set of cpus referring to our pagetable. */
-        mask = mm->cpu_vm_mask;
+        if (!alloc_cpumask_var(&mask, GFP_ATOMIC)) {
+                for_each_online_cpu(cpu) {
+                        if (!cpumask_test_cpu(cpu, &mm->cpu_vm_mask)
+                            && per_cpu(xen_current_cr3, cpu) != __pa(mm->pgd))
+                                continue;
+                        smp_call_function_single(cpu, drop_other_mm_ref, mm, 1);
+                }
+                return;
+        }
+        cpumask_copy(mask, &mm->cpu_vm_mask);
        /* It's possible that a vcpu may have a stale reference to our
           cr3, because its in lazy mode, and it hasn't yet flushed
@@ -1103,11 +1112,12 @@ static void xen_drop_mm_ref(struct mm_struct *mm)
           if needed. */
        for_each_online_cpu(cpu) {
                if (per_cpu(xen_current_cr3, cpu) == __pa(mm->pgd))
-                        cpu_set(cpu, mask);
+                        cpumask_set_cpu(cpu, mask);
        }
-        if (!cpus_empty(mask))
+        if (!cpumask_empty(mask))
-                smp_call_function_mask(mask, drop_other_mm_ref, mm, 1);
+                smp_call_function_many(mask, drop_other_mm_ref, mm, 1);
+        free_cpumask_var(mask);
 }
 #else
 static void xen_drop_mm_ref(struct mm_struct *mm)
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index acd9b6705e02..c44e2069c7c7 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -33,7 +33,7 @@
 #include "xen-ops.h"
 #include "mmu.h"
-cpumask_t xen_cpu_initialized_map;
+cpumask_var_t xen_cpu_initialized_map;
 static DEFINE_PER_CPU(int, resched_irq);
 static DEFINE_PER_CPU(int, callfunc_irq);
@@ -158,7 +158,7 @@ static void __init xen_fill_possible_map(void)
 {
        int i, rc;
-        for (i = 0; i < NR_CPUS; i++) {
+        for (i = 0; i < nr_cpu_ids; i++) {
                rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
                if (rc >= 0) {
                        num_processors++;
@@ -192,11 +192,14 @@ static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
        if (xen_smp_intr_init(0))
                BUG();
-        xen_cpu_initialized_map = cpumask_of_cpu(0);
+        if (!alloc_cpumask_var(&xen_cpu_initialized_map, GFP_KERNEL))
+                panic("could not allocate xen_cpu_initialized_map\n");
+        cpumask_copy(xen_cpu_initialized_map, cpumask_of(0));
        /* Restrict the possible_map according to max_cpus. */
        while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) {
-                for (cpu = NR_CPUS - 1; !cpu_possible(cpu); cpu--)
+                for (cpu = nr_cpu_ids - 1; !cpu_possible(cpu); cpu--)
                        continue;
                cpu_clear(cpu, cpu_possible_map);
        }
@@ -221,7 +224,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
        struct vcpu_guest_context *ctxt;
        struct desc_struct *gdt;
-        if (cpu_test_and_set(cpu, xen_cpu_initialized_map))
+        if (cpumask_test_and_set_cpu(cpu, xen_cpu_initialized_map))
                return 0;
        ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
@@ -408,24 +411,23 @@ static void xen_smp_send_reschedule(int cpu)
        xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
 }
-static void xen_send_IPI_mask(cpumask_t mask, enum ipi_vector vector)
+static void xen_send_IPI_mask(const struct cpumask *mask,
+                              enum ipi_vector vector)
 {
        unsigned cpu;
-        cpus_and(mask, mask, cpu_online_map);
+        for_each_cpu_and(cpu, mask, cpu_online_mask)
-        for_each_cpu_mask_nr(cpu, mask)
                xen_send_IPI_one(cpu, vector);
 }
-static void xen_smp_send_call_function_ipi(cpumask_t mask)
+static void xen_smp_send_call_function_ipi(const struct cpumask *mask)
 {
        int cpu;
        xen_send_IPI_mask(mask, XEN_CALL_FUNCTION_VECTOR);
        /* Make sure other vcpus get a chance to run if they need to. */
-        for_each_cpu_mask_nr(cpu, mask) {
+        for_each_cpu(cpu, mask) {
                if (xen_vcpu_stolen(cpu)) {
                        HYPERVISOR_sched_op(SCHEDOP_yield, 0);
                        break;
@@ -435,7 +437,8 @@ static void xen_smp_send_call_function_ipi(cpumask_t mask)
 static void xen_smp_send_call_function_single_ipi(int cpu)
 {
-        xen_send_IPI_mask(cpumask_of_cpu(cpu), XEN_CALL_FUNCTION_SINGLE_VECTOR);
+        xen_send_IPI_mask(cpumask_of(cpu),
+                          XEN_CALL_FUNCTION_SINGLE_VECTOR);
 }
 static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 2a234db5949b..212ffe012b76 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -35,7 +35,8 @@ void xen_post_suspend(int suspend_cancelled)
                        pfn_to_mfn(xen_start_info->console.domU.mfn);
        } else {
 #ifdef CONFIG_SMP
-                xen_cpu_initialized_map = cpu_online_map;
+                BUG_ON(xen_cpu_initialized_map == NULL);
+                cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
 #endif
                xen_vcpu_restore();
        }
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index c9f7cda48ed7..65d75a6be0ba 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -437,7 +437,7 @@ void xen_setup_timer(int cpu)
        evt = &per_cpu(xen_clock_events, cpu);
        memcpy(evt, xen_clockevent, sizeof(*evt));
-        evt->cpumask = cpumask_of_cpu(cpu);
+        evt->cpumask = cpumask_of(cpu);
        evt->irq = irq;
        setup_runstate_info(cpu);
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 9e1afae8461f..c1f8faf0a2c5 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -58,7 +58,7 @@ void __init xen_init_spinlocks(void);
 __cpuinit void xen_init_lock_cpu(int cpu);
 void xen_uninit_lock_cpu(int cpu);
-extern cpumask_t xen_cpu_initialized_map;
+extern cpumask_var_t xen_cpu_initialized_map;
 #else
 static inline void xen_smp_init(void) {}
 #endif
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 64f5d54f7edc..4259072f5bd0 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -109,7 +109,7 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
 */
 static ssize_t print_cpus_map(char *buf, cpumask_t *map)
 {
-        int n = cpulist_scnprintf(buf, PAGE_SIZE-2, *map);
+        int n = cpulist_scnprintf(buf, PAGE_SIZE-2, map);
        buf[n++] = '\n';
        buf[n] = '\0';
diff --git a/drivers/base/node.c b/drivers/base/node.c
index f5207090885a..91636cd8b6c9 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -30,8 +30,8 @@ static ssize_t node_read_cpumap(struct sys_device *dev, int type, char *buf)
        BUILD_BUG_ON((NR_CPUS/32 * 9) > (PAGE_SIZE-1));
        len = type?
-                cpulist_scnprintf(buf, PAGE_SIZE-2, *mask):
+                cpulist_scnprintf(buf, PAGE_SIZE-2, mask) :
-                cpumask_scnprintf(buf, PAGE_SIZE-2, *mask);
+                cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
        buf[len++] = '\n';
        buf[len] = '\0';
        return len;
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index 199cd97e32e6..a8bc1cbcfa7c 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -49,8 +49,8 @@ static ssize_t show_cpumap(int type, cpumask_t *mask, char *buf)
        if (len > 1) {
                n = type?
-                        cpulist_scnprintf(buf, len-2, *mask):
+                        cpulist_scnprintf(buf, len-2, mask) :
-                        cpumask_scnprintf(buf, len-2, *mask);
+                        cpumask_scnprintf(buf, len-2, mask);
                buf[n++] = '\n';
                buf[n] = '\0';
        }
diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index f450588e5858..254f1064d973 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -154,7 +154,6 @@ static struct tc_clkevt_device clkevt = {
                .shift          = 32,
                /* Should be lower than at91rm9200's system timer */
                .rating         = 125,
-                .cpumask        = CPU_MASK_CPU0,
                .set_next_event = tc_next_event,
                .set_mode       = tc_mode,
        },
@@ -195,6 +194,7 @@ static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
        clkevt.clkevt.max_delta_ns
                = clockevent_delta2ns(0xffff, &clkevt.clkevt);
        clkevt.clkevt.min_delta_ns = clockevent_delta2ns(1, &clkevt.clkevt) + 1;
+        clkevt.clkevt.cpumask = cpumask_of(0);
        setup_irq(irq, &tc_irqaction);
diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c
index a1039068f95c..415fab0125ac 100644
--- a/drivers/lguest/interrupts_and_traps.c
+++ b/drivers/lguest/interrupts_and_traps.c
@@ -222,11 +222,16 @@ bool check_syscall_vector(struct lguest *lg)
 int init_interrupts(void)
 {
        /* If they want some strange system call vector, reserve it now */
-        if (syscall_vector != SYSCALL_VECTOR
+        if (syscall_vector != SYSCALL_VECTOR) {
-            && test_and_set_bit(syscall_vector, used_vectors)) {
+                if (test_bit(syscall_vector, used_vectors) ||
-                printk("lg: couldn't reserve syscall %u\n", syscall_vector);
+                    vector_used_by_percpu_irq(syscall_vector)) {
-                return -EBUSY;
+                        printk(KERN_ERR "lg: couldn't reserve syscall %u\n",
+                                 syscall_vector);
+                        return -EBUSY;
+                }
+                set_bit(syscall_vector, used_vectors);
        }
        return 0;
 }
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 7beffcab2745..9dedbbd218c3 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -704,16 +704,17 @@ static unsigned int iosapic_startup_irq(unsigned int irq)
 }
 #ifdef CONFIG_SMP
-static void iosapic_set_affinity_irq(unsigned int irq, cpumask_t dest)
+static void iosapic_set_affinity_irq(unsigned int irq,
+                                     const struct cpumask *dest)
 {
        struct vector_info *vi = iosapic_get_vector(irq);
        u32 d0, d1, dummy_d0;
        unsigned long flags;
-        if (cpu_check_affinity(irq, &dest))
+        if (cpu_check_affinity(irq, dest))
                return;
-        vi->txn_addr = txn_affinity_addr(irq, first_cpu(dest));
+        vi->txn_addr = txn_affinity_addr(irq, cpumask_first(dest));
        spin_lock_irqsave(&iosapic_lock, flags);
        /* d1 contains the destination CPU, so only want to set that
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 5d72866897a8..c88485860a0a 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -74,7 +74,7 @@ static ssize_t local_cpus_show(struct device *dev,
        int len;
        mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
-        len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
+        len = cpumask_scnprintf(buf, PAGE_SIZE-2, &mask);
        buf[len++] = '\n';
        buf[len] = '\0';
        return len;
@@ -88,7 +88,7 @@ static ssize_t local_cpulist_show(struct device *dev,
        int len;
        mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
-        len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
+        len = cpulist_scnprintf(buf, PAGE_SIZE-2, &mask);
        buf[len++] = '\n';
        buf[len] = '\0';
        return len;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 003a9b3c293f..5b3f5937ecf5 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -55,8 +55,8 @@ static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
        cpumask = pcibus_to_cpumask(to_pci_bus(dev));
        ret = type?
-                cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask):
+                cpulist_scnprintf(buf, PAGE_SIZE-2, &cpumask) :
-                cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask);
+                cpumask_scnprintf(buf, PAGE_SIZE-2, &cpumask);
        buf[ret++] = '\n';
        buf[ret] = '\0';
        return ret;
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index e26733a9df21..eb0dfdeaa949 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -585,7 +585,7 @@ void rebind_evtchn_irq(int evtchn, int irq)
        spin_unlock(&irq_mapping_update_lock);
        /* new event channels are always bound to cpu 0 */
-        irq_set_affinity(irq, cpumask_of_cpu(0));
+        irq_set_affinity(irq, cpumask_of(0));
        /* Unmask the event channel. */
        enable_irq(irq);
@@ -614,9 +614,9 @@ static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
 }
-static void set_affinity_irq(unsigned irq, cpumask_t dest)
+static void set_affinity_irq(unsigned irq, const struct cpumask *dest)
 {
-        unsigned tcpu = first_cpu(dest);
+        unsigned tcpu = cpumask_first(dest);
        rebind_irq_to_cpu(irq, tcpu);
 }
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
index 54bbf6e04ee8..0e9e2bc0ee96 100644
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -40,6 +40,9 @@
 #ifndef node_to_cpumask
 #define node_to_cpumask(node)   ((void)node, cpu_online_map)
 #endif
+#ifndef cpumask_of_node
+#define cpumask_of_node(node)   ((void)node, cpu_online_mask)
+#endif
 #ifndef node_to_first_cpu
 #define node_to_first_cpu(node) ((void)(node),0)
 #endif
@@ -54,9 +57,18 @@
                                )
 #endif
+#ifndef cpumask_of_pcibus
+#define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
+                                 cpu_all_mask :                         \
+                                 cpumask_of_node(pcibus_to_node(bus)))
+#endif
 #endif  /* CONFIG_NUMA */
-/* returns pointer to cpumask for specified node */
+/*
+ * returns pointer to cpumask for specified node
+ * Deprecated: use "const struct cpumask *mask = cpumask_of_node(node)"
+ */
 #ifndef node_to_cpumask_ptr
 #define node_to_cpumask_ptr(v, node)                                    \
diff --git a/include/asm-m32r/smp.h b/include/asm-m32r/smp.h
index c5dd66916692..b96a6d2ffbc3 100644
--- a/include/asm-m32r/smp.h
+++ b/include/asm-m32r/smp.h
@@ -63,8 +63,6 @@ extern volatile int cpu_2_physid[NR_CPUS];
 #define raw_smp_processor_id()  (current_thread_info()->cpu)
 extern cpumask_t cpu_callout_map;
-extern cpumask_t cpu_possible_map;
-extern cpumask_t cpu_present_map;
 static __inline__ int hard_smp_processor_id(void)
 {
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index ed3a5d473e52..cea153697ec7 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -82,13 +82,13 @@ struct clock_event_device {
        int                     shift;
        int                     rating;
        int                     irq;
-        cpumask_t               cpumask;
+        const struct cpumask    *cpumask;
        int                     (*set_next_event)(unsigned long evt,
                                                  struct clock_event_device *);
        void                    (*set_mode)(enum clock_event_mode mode,
                                            struct clock_event_device *);
        void                    (*event_handler)(struct clock_event_device *);
-        void                    (*broadcast)(cpumask_t mask);
+        void                    (*broadcast)(const struct cpumask *mask);
        struct list_head        list;
        enum clock_event_mode   mode;
        ktime_t                 next_event;
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 21e1dd43e52a..d4bf52603e6b 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -339,36 +339,6 @@ extern cpumask_t cpu_mask_all;
 #endif
 #define CPUMASK_PTR(v, m)       cpumask_t *v = &(m->v)
-#define cpumask_scnprintf(buf, len, src) \
-                        __cpumask_scnprintf((buf), (len), &(src), NR_CPUS)
-static inline int __cpumask_scnprintf(char *buf, int len,
-                                        const cpumask_t *srcp, int nbits)
-{
-        return bitmap_scnprintf(buf, len, srcp->bits, nbits);
-}
-#define cpumask_parse_user(ubuf, ulen, dst) \
-                        __cpumask_parse_user((ubuf), (ulen), &(dst), NR_CPUS)
-static inline int __cpumask_parse_user(const char __user *buf, int len,
-                                        cpumask_t *dstp, int nbits)
-{
-        return bitmap_parse_user(buf, len, dstp->bits, nbits);
-}
-#define cpulist_scnprintf(buf, len, src) \
-                        __cpulist_scnprintf((buf), (len), &(src), NR_CPUS)
-static inline int __cpulist_scnprintf(char *buf, int len,
-                                        const cpumask_t *srcp, int nbits)
-{
-        return bitmap_scnlistprintf(buf, len, srcp->bits, nbits);
-}
-#define cpulist_parse(buf, dst) __cpulist_parse((buf), &(dst), NR_CPUS)
-static inline int __cpulist_parse(const char *buf, cpumask_t *dstp, int nbits)
-{
-        return bitmap_parselist(buf, dstp->bits, nbits);
-}
 #define cpu_remap(oldbit, old, new) \
                __cpu_remap((oldbit), &(old), &(new), NR_CPUS)
 static inline int __cpu_remap(int oldbit,
@@ -540,9 +510,6 @@ extern cpumask_t cpu_active_map;
        [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
 }
-/* This produces more efficient code. */
-#define nr_cpumask_bits NR_CPUS
 #else /* NR_CPUS > BITS_PER_LONG */
 #define CPU_BITS_ALL                                            \
@@ -550,9 +517,15 @@ extern cpumask_t cpu_active_map;
        [0 ... BITS_TO_LONGS(NR_CPUS)-2] = ~0UL,                \
        [BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD         \
 }
+#endif /* NR_CPUS > BITS_PER_LONG */
+#ifdef CONFIG_CPUMASK_OFFSTACK
+/* Assuming NR_CPUS is huge, a runtime limit is more efficient.  Also,
+ * not all bits may be allocated. */
 #define nr_cpumask_bits nr_cpu_ids
-#endif /* NR_CPUS > BITS_PER_LONG */
+#else
+#define nr_cpumask_bits NR_CPUS
+#endif
 /* verify cpu argument to cpumask_* operators */
 static inline unsigned int cpumask_check(unsigned int cpu)
@@ -946,6 +919,63 @@ static inline void cpumask_copy(struct cpumask *dstp,
 #define cpumask_of(cpu) (get_cpu_mask(cpu))
 /**
+ * cpumask_scnprintf - print a cpumask into a string as comma-separated hex
+ * @buf: the buffer to sprintf into
+ * @len: the length of the buffer
+ * @srcp: the cpumask to print
+ *
+ * If len is zero, returns zero.  Otherwise returns the length of the
+ * (nul-terminated) @buf string.
+ */
+static inline int cpumask_scnprintf(char *buf, int len,
+                                    const struct cpumask *srcp)
+{
+        return bitmap_scnprintf(buf, len, srcp->bits, nr_cpumask_bits);
+}
+/**
+ * cpumask_parse_user - extract a cpumask from a user string
+ * @buf: the buffer to extract from
+ * @len: the length of the buffer
+ * @dstp: the cpumask to set.
+ *
+ * Returns -errno, or 0 for success.
+ */
+static inline int cpumask_parse_user(const char __user *buf, int len,
+                                     struct cpumask *dstp)
+{
+        return bitmap_parse_user(buf, len, dstp->bits, nr_cpumask_bits);
+}
+/**
+ * cpulist_scnprintf - print a cpumask into a string as comma-separated list
+ * @buf: the buffer to sprintf into
+ * @len: the length of the buffer
+ * @srcp: the cpumask to print
+ *
+ * If len is zero, returns zero.  Otherwise returns the length of the
+ * (nul-terminated) @buf string.
+ */
+static inline int cpulist_scnprintf(char *buf, int len,
+                                    const struct cpumask *srcp)
+{
+        return bitmap_scnlistprintf(buf, len, srcp->bits, nr_cpumask_bits);
+}
+/**
+ * cpulist_parse_user - extract a cpumask from a user string of ranges
+ * @buf: the buffer to extract from
+ * @len: the length of the buffer
+ * @dstp: the cpumask to set.
+ *
+ * Returns -errno, or 0 for success.
+ */
+static inline int cpulist_parse(const char *buf, struct cpumask *dstp)
+{
+        return bitmap_parselist(buf, dstp->bits, nr_cpumask_bits);
+}
+/**
 * to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
 * @bitmap: the bitmap
 *
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 8cc8ef47f5b6..990355fbc54e 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -111,13 +111,13 @@ extern void enable_irq(unsigned int irq);
 extern cpumask_t irq_default_affinity;
-extern int irq_set_affinity(unsigned int irq, cpumask_t cpumask);
+extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask);
 extern int irq_can_set_affinity(unsigned int irq);
 extern int irq_select_affinity(unsigned int irq);
 #else /* CONFIG_SMP */
-static inline int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
+static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m)
 {
        return -EINVAL;
 }
diff --git a/include/linux/irq.h b/include/linux/irq.h
index d64a6d49bdef..f899b502f186 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -113,7 +113,8 @@ struct irq_chip {
        void            (*eoi)(unsigned int irq);
        void            (*end)(unsigned int irq);
-        void            (*set_affinity)(unsigned int irq, cpumask_t dest);
+        void            (*set_affinity)(unsigned int irq,
+                                        const struct cpumask *dest);
        int             (*retrigger)(unsigned int irq);
        int             (*set_type)(unsigned int irq, unsigned int flow_type);
        int             (*set_wake)(unsigned int irq, unsigned int on);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8395e715809d..158d53d07765 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -250,7 +250,7 @@ extern void init_idle_bootup_task(struct task_struct *idle);
 extern int runqueue_is_locked(void);
 extern void task_rq_unlock_wait(struct task_struct *p);
-extern cpumask_t nohz_cpu_mask;
+extern cpumask_var_t nohz_cpu_mask;
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)
 extern int select_nohz_load_balancer(int cpu);
 #else
@@ -758,20 +758,51 @@ enum cpu_idle_type {
 #define SD_SERIALIZE            1024    /* Only a single load balancing instance */
 #define SD_WAKE_IDLE_FAR        2048    /* Gain latency sacrificing cache hit */
-#define BALANCE_FOR_MC_POWER    \
+enum powersavings_balance_level {
-        (sched_smt_power_savings ? SD_POWERSAVINGS_BALANCE : 0)
+        POWERSAVINGS_BALANCE_NONE = 0,  /* No power saving load balance */
+        POWERSAVINGS_BALANCE_BASIC,     /* Fill one thread/core/package
+                                         * first for long running threads
+                                         */
+        POWERSAVINGS_BALANCE_WAKEUP,    /* Also bias task wakeups to semi-idle
+                                         * cpu package for power savings
+                                         */
+        MAX_POWERSAVINGS_BALANCE_LEVELS
+};
-#define BALANCE_FOR_PKG_POWER   \
+extern int sched_mc_power_savings, sched_smt_power_savings;
-        ((sched_mc_power_savings || sched_smt_power_savings) ?  \
-         SD_POWERSAVINGS_BALANCE : 0)
-#define test_sd_parent(sd, flag)        ((sd->parent &&         \
+static inline int sd_balance_for_mc_power(void)
-                                         (sd->parent->flags & flag)) ? 1 : 0)
+{
+        if (sched_smt_power_savings)
+                return SD_POWERSAVINGS_BALANCE;
+        return 0;
+}
+static inline int sd_balance_for_package_power(void)
+{
+        if (sched_mc_power_savings | sched_smt_power_savings)
+                return SD_POWERSAVINGS_BALANCE;
+        return 0;
+}
+/*
+ * Optimise SD flags for power savings:
+ * SD_BALANCE_NEWIDLE helps agressive task consolidation and power savings.
+ * Keep default SD flags if sched_{smt,mc}_power_saving=0
+ */
+static inline int sd_power_saving_flags(void)
+{
+        if (sched_mc_power_savings | sched_smt_power_savings)
+                return SD_BALANCE_NEWIDLE;
+        return 0;
+}
 struct sched_group {
        struct sched_group *next;       /* Must be a circular list */
-        cpumask_t cpumask;
        /*
         * CPU power of this group, SCHED_LOAD_SCALE being max power for a
@@ -784,8 +815,15 @@ struct sched_group {
         * (see include/linux/reciprocal_div.h)
         */
        u32 reciprocal_cpu_power;
+        unsigned long cpumask[];
 };
+static inline struct cpumask *sched_group_cpus(struct sched_group *sg)
+{
+        return to_cpumask(sg->cpumask);
+}
 enum sched_domain_level {
        SD_LV_NONE = 0,
        SD_LV_SIBLING,
@@ -809,7 +847,6 @@ struct sched_domain {
        struct sched_domain *parent;    /* top domain must be null terminated */
        struct sched_domain *child;     /* bottom domain must be null terminated */
        struct sched_group *groups;     /* the balancing groups of the domain */
-        cpumask_t span;                 /* span of all CPUs in this domain */
        unsigned long min_interval;     /* Minimum balance interval ms */
        unsigned long max_interval;     /* Maximum balance interval ms */
        unsigned int busy_factor;       /* less balancing by factor if busy */
@@ -864,18 +901,35 @@ struct sched_domain {
 #ifdef CONFIG_SCHED_DEBUG
        char *name;
 #endif
+        /* span of all CPUs in this domain */
+        unsigned long span[];
 };
-extern void partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
+static inline struct cpumask *sched_domain_span(struct sched_domain *sd)
+{
+        return to_cpumask(sd->span);
+}
+extern void partition_sched_domains(int ndoms_new, struct cpumask *doms_new,
                                    struct sched_domain_attr *dattr_new);
 extern int arch_reinit_sched_domains(void);
+/* Test a flag in parent sched domain */
+static inline int test_sd_parent(struct sched_domain *sd, int flag)
+{
+        if (sd->parent && (sd->parent->flags & flag))
+                return 1;
+        return 0;
+}
 #else /* CONFIG_SMP */
 struct sched_domain_attr;
 static inline void
-partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
+partition_sched_domains(int ndoms_new, struct cpumask *doms_new,
                        struct sched_domain_attr *dattr_new)
 {
 }
@@ -926,7 +980,7 @@ struct sched_class {
        void (*task_wake_up) (struct rq *this_rq, struct task_struct *task);
        void (*set_cpus_allowed)(struct task_struct *p,
-                                 const cpumask_t *newmask);
+                                 const struct cpumask *newmask);
        void (*rq_online)(struct rq *rq);
        void (*rq_offline)(struct rq *rq);
@@ -1579,12 +1633,12 @@ extern cputime_t task_gtime(struct task_struct *p);
 #ifdef CONFIG_SMP
 extern int set_cpus_allowed_ptr(struct task_struct *p,
-                                const cpumask_t *new_mask);
+                                const struct cpumask *new_mask);
 #else
 static inline int set_cpus_allowed_ptr(struct task_struct *p,
-                                       const cpumask_t *new_mask)
+                                       const struct cpumask *new_mask)
 {
-        if (!cpu_isset(0, *new_mask))
+        if (!cpumask_test_cpu(0, new_mask))
                return -EINVAL;
        return 0;
 }
@@ -2195,10 +2249,8 @@ __trace_special(void *__tr, void *__data,
 }
 #endif
-extern long sched_setaffinity(pid_t pid, const cpumask_t *new_mask);
+extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
-extern long sched_getaffinity(pid_t pid, cpumask_t *mask);
+extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
-extern int sched_mc_power_savings, sched_smt_power_savings;
 extern void normalize_rt_tasks(void);
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 0c5b5ac36d8e..e632d29f0544 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -125,7 +125,8 @@ int arch_update_cpu_topology(void);
                                | SD_WAKE_AFFINE        \
                                | SD_WAKE_BALANCE       \
                                | SD_SHARE_PKG_RESOURCES\
-                                | BALANCE_FOR_MC_POWER, \
+                                | sd_balance_for_mc_power()\
+                                | sd_power_saving_flags(),\
        .last_balance           = jiffies,              \
        .balance_interval       = 1,                    \
 }
@@ -150,7 +151,8 @@ int arch_update_cpu_topology(void);
                                | SD_BALANCE_FORK       \
                                | SD_WAKE_AFFINE        \
                                | SD_WAKE_BALANCE       \
-                                | BALANCE_FOR_PKG_POWER,\
+                                | sd_balance_for_package_power()\
+                                | sd_power_saving_flags(),\
        .last_balance           = jiffies,              \
        .balance_interval       = 1,                    \
 }
diff --git a/init/Kconfig b/init/Kconfig
index 13627191a60d..f6281711166d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -924,6 +924,15 @@ config KMOD
 endif # MODULES
+config INIT_ALL_POSSIBLE
+        bool
+        help
+          Back when each arch used to define their own cpu_online_map and
+          cpu_possible_map, some of them chose to initialize cpu_possible_map
+          with all 1s, and others with all 0s.  When they were centralised,
+          it was better to provide this option than to break all the archs
+          and have several arch maintainers persuing me down dark alleys.
 config STOP_MACHINE
        bool
        default y
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 8ea32e8d68b0..bae131a1211b 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -24,19 +24,20 @@
 cpumask_t cpu_present_map __read_mostly;
 EXPORT_SYMBOL(cpu_present_map);
-#ifndef CONFIG_SMP
 /*
 * Represents all cpu's that are currently online.
 */
-cpumask_t cpu_online_map __read_mostly = CPU_MASK_ALL;
+cpumask_t cpu_online_map __read_mostly;
 EXPORT_SYMBOL(cpu_online_map);
+#ifdef CONFIG_INIT_ALL_POSSIBLE
 cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;
+#else
+cpumask_t cpu_possible_map __read_mostly;
+#endif
 EXPORT_SYMBOL(cpu_possible_map);
-#else /* CONFIG_SMP */
+#ifdef CONFIG_SMP
 /* Serializes the updates to cpu_online_map, cpu_present_map */
 static DEFINE_MUTEX(cpu_add_remove_lock);
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 96c0ba13b8cd..39c1a4c1c5a9 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -896,7 +896,7 @@ static int update_cpumask(struct cpuset *cs, const char *buf)
        if (!*buf) {
                cpus_clear(trialcs.cpus_allowed);
        } else {
-                retval = cpulist_parse(buf, trialcs.cpus_allowed);
+                retval = cpulist_parse(buf, &trialcs.cpus_allowed);
                if (retval < 0)
                        return retval;
@@ -1482,7 +1482,7 @@ static int cpuset_sprintf_cpulist(char *page, struct cpuset *cs)
        mask = cs->cpus_allowed;
        mutex_unlock(&callback_mutex);
-        return cpulist_scnprintf(page, PAGE_SIZE, mask);
+        return cpulist_scnprintf(page, PAGE_SIZE, &mask);
 }
 static int cpuset_sprintf_memlist(char *page, struct cpuset *cs)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 6eb3c7952b64..f63c706d25e1 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -46,7 +46,7 @@ void dynamic_irq_init(unsigned int irq)
        desc->irq_count = 0;
        desc->irqs_unhandled = 0;
 #ifdef CONFIG_SMP
-        cpus_setall(desc->affinity);
+        cpumask_setall(&desc->affinity);
 #endif
        spin_unlock_irqrestore(&desc->lock, flags);
 }
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 540f6c49f3fa..61c4a9b62165 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -79,7 +79,7 @@ int irq_can_set_affinity(unsigned int irq)
 *      @cpumask:       cpumask
 *
 */
-int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
+int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 {
        struct irq_desc *desc = irq_to_desc(irq);
        unsigned long flags;
@@ -91,14 +91,14 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
 #ifdef CONFIG_GENERIC_PENDING_IRQ
        if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
-                desc->affinity = cpumask;
+                cpumask_copy(&desc->affinity, cpumask);
                desc->chip->set_affinity(irq, cpumask);
        } else {
                desc->status |= IRQ_MOVE_PENDING;
-                desc->pending_mask = cpumask;
+                cpumask_copy(&desc->pending_mask, cpumask);
        }
 #else
-        desc->affinity = cpumask;
+        cpumask_copy(&desc->affinity, cpumask);
        desc->chip->set_affinity(irq, cpumask);
 #endif
        desc->status |= IRQ_AFFINITY_SET;
@@ -112,26 +112,24 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
 */
 int do_irq_select_affinity(unsigned int irq, struct irq_desc *desc)
 {
-        cpumask_t mask;
        if (!irq_can_set_affinity(irq))
                return 0;
-        cpus_and(mask, cpu_online_map, irq_default_affinity);
        /*
         * Preserve an userspace affinity setup, but make sure that
         * one of the targets is online.
         */
        if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
-                if (cpus_intersects(desc->affinity, cpu_online_map))
+                if (cpumask_any_and(&desc->affinity, cpu_online_mask)
-                        mask = desc->affinity;
+                    < nr_cpu_ids)
+                        goto set_affinity;
                else
                        desc->status &= ~IRQ_AFFINITY_SET;
        }
-        desc->affinity = mask;
+        cpumask_and(&desc->affinity, cpu_online_mask, &irq_default_affinity);
-        desc->chip->set_affinity(irq, mask);
+set_affinity:
+        desc->chip->set_affinity(irq, &desc->affinity);
        return 0;
 }
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 9db681d95814..bd72329e630c 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -4,7 +4,6 @@
 void move_masked_irq(int irq)
 {
        struct irq_desc *desc = irq_to_desc(irq);
-        cpumask_t tmp;
        if (likely(!(desc->status & IRQ_MOVE_PENDING)))
                return;
@@ -19,7 +18,7 @@ void move_masked_irq(int irq)
        desc->status &= ~IRQ_MOVE_PENDING;
-        if (unlikely(cpus_empty(desc->pending_mask)))
+        if (unlikely(cpumask_empty(&desc->pending_mask)))
                return;
        if (!desc->chip->set_affinity)
@@ -27,8 +26,6 @@ void move_masked_irq(int irq)
        assert_spin_locked(&desc->lock);
-        cpus_and(tmp, desc->pending_mask, cpu_online_map);
        /*
         * If there was a valid mask to work with, please
         * do the disable, re-program, enable sequence.
@@ -41,10 +38,13 @@ void move_masked_irq(int irq)
         * For correct operation this depends on the caller
         * masking the irqs.
         */
-        if (likely(!cpus_empty(tmp))) {
+        if (likely(cpumask_any_and(&desc->pending_mask, cpu_online_mask)
-                desc->chip->set_affinity(irq,tmp);
+                   < nr_cpu_ids)) {
+                cpumask_and(&desc->affinity,
+                            &desc->pending_mask, cpu_online_mask);
+                desc->chip->set_affinity(irq, &desc->affinity);
        }
-        cpus_clear(desc->pending_mask);
+        cpumask_clear(&desc->pending_mask);
 }
 void move_native_irq(int irq)
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index f6b3440f05bc..d2c0e5ee53c5 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -40,33 +40,42 @@ static ssize_t irq_affinity_proc_write(struct file *file,
                const char __user *buffer, size_t count, loff_t *pos)
 {
        unsigned int irq = (int)(long)PDE(file->f_path.dentry->d_inode)->data;
-        cpumask_t new_value;
+        cpumask_var_t new_value;
        int err;
        if (!irq_to_desc(irq)->chip->set_affinity || no_irq_affinity ||
            irq_balancing_disabled(irq))
                return -EIO;
+        if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
+                return -ENOMEM;
        err = cpumask_parse_user(buffer, count, new_value);
        if (err)
-                return err;
+                goto free_cpumask;
-        if (!is_affinity_mask_valid(new_value))
+        if (!is_affinity_mask_valid(*new_value)) {
-                return -EINVAL;
+                err = -EINVAL;
+                goto free_cpumask;
+        }
        /*
         * Do not allow disabling IRQs completely - it's a too easy
         * way to make the system unusable accidentally :-) At least
         * one online CPU still has to be targeted.
         */
-        if (!cpus_intersects(new_value, cpu_online_map))
+        if (!cpumask_intersects(new_value, cpu_online_mask)) {
                /* Special case for empty set - allow the architecture
                   code to set default SMP affinity. */
-                return irq_select_affinity_usr(irq) ? -EINVAL : count;
+                err = irq_select_affinity_usr(irq) ? -EINVAL : count;
+        } else {
-        irq_set_affinity(irq, new_value);
+                irq_set_affinity(irq, new_value);
+                err = count;
+        }
-        return count;
+free_cpumask:
+        free_cpumask_var(new_value);
+        return err;
 }
 static int irq_affinity_proc_open(struct inode *inode, struct file *file)
@@ -95,7 +104,7 @@ static ssize_t default_affinity_write(struct file *file,
        cpumask_t new_value;
        int err;
-        err = cpumask_parse_user(buffer, count, new_value);
+        err = cpumask_parse_user(buffer, count, &new_value);
        if (err)
                return err;
diff --git a/kernel/profile.c b/kernel/profile.c
index 60adefb59b5e..4cb7d68fed82 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -442,7 +442,7 @@ void profile_tick(int type)
 static int prof_cpu_mask_read_proc(char *page, char **start, off_t off,
                        int count, int *eof, void *data)
 {
-        int len = cpumask_scnprintf(page, count, *(cpumask_t *)data);
+        int len = cpumask_scnprintf(page, count, (cpumask_t *)data);
        if (count - len < 2)
                return -EINVAL;
        len += sprintf(page + len, "\n");
@@ -456,7 +456,7 @@ static int prof_cpu_mask_write_proc(struct file *file,
        unsigned long full_count = count, err;
        cpumask_t new_value;
-        err = cpumask_parse_user(buffer, count, new_value);
+        err = cpumask_parse_user(buffer, count, &new_value);
        if (err)
                return err;
diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index e503a002f330..c03ca3e61919 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -393,7 +393,7 @@ static void rcu_start_batch(struct rcu_ctrlblk *rcp)
                 * unnecessarily.
                 */
                smp_mb();
-                cpus_andnot(rcp->cpumask, cpu_online_map, nohz_cpu_mask);
+                cpumask_andnot(&rcp->cpumask, cpu_online_mask, nohz_cpu_mask);
                rcp->signaled = 0;
        }
diff --git a/kernel/sched.c b/kernel/sched.c
index fff1c4a20b65..27ba1d642f0f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -498,18 +498,26 @@ struct rt_rq {
 */
 struct root_domain {
        atomic_t refcount;
-        cpumask_t span;
+        cpumask_var_t span;
-        cpumask_t online;
+        cpumask_var_t online;
        /*
         * The "RT overload" flag: it gets set if a CPU has more than
         * one runnable RT task.
         */
-        cpumask_t rto_mask;
+        cpumask_var_t rto_mask;
        atomic_t rto_count;
 #ifdef CONFIG_SMP
        struct cpupri cpupri;
 #endif
+#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
+        /*
+         * Preferred wake up cpu nominated by sched_mc balance that will be
+         * used when most cpus are idle in the system indicating overall very
+         * low system utilisation. Triggered at POWERSAVINGS_BALANCE_WAKEUP(2)
+         */
+        unsigned int sched_mc_preferred_wakeup_cpu;
+#endif
 };
 /*
@@ -1514,7 +1522,7 @@ static int tg_shares_up(struct task_group *tg, void *data)
        struct sched_domain *sd = data;
        int i;
-        for_each_cpu_mask(i, sd->span) {
+        for_each_cpu(i, sched_domain_span(sd)) {
                /*
                 * If there are currently no tasks on the cpu pretend there
                 * is one of average load so that when a new task gets to
@@ -1535,7 +1543,7 @@ static int tg_shares_up(struct task_group *tg, void *data)
        if (!sd->parent || !(sd->parent->flags & SD_LOAD_BALANCE))
                shares = tg->shares;
-        for_each_cpu_mask(i, sd->span)
+        for_each_cpu(i, sched_domain_span(sd))
                update_group_shares_cpu(tg, i, shares, rq_weight);
        return 0;
@@ -2101,15 +2109,17 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, int this_cpu)
                int i;
                /* Skip over this group if it has no CPUs allowed */
-                if (!cpus_intersects(group->cpumask, p->cpus_allowed))
+                if (!cpumask_intersects(sched_group_cpus(group),
+                                        &p->cpus_allowed))
                        continue;
-                local_group = cpu_isset(this_cpu, group->cpumask);
+                local_group = cpumask_test_cpu(this_cpu,
+                                               sched_group_cpus(group));
                /* Tally up the load of all CPUs in the group */
                avg_load = 0;
-                for_each_cpu_mask_nr(i, group->cpumask) {
+                for_each_cpu(i, sched_group_cpus(group)) {
                        /* Bias balancing toward cpus of our domain */
                        if (local_group)
                                load = source_load(i, load_idx);
@@ -2141,17 +2151,14 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p, int this_cpu)
 * find_idlest_cpu - find the idlest cpu among the cpus in group.
 */
 static int
-find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu,
+find_idlest_cpu(struct sched_group *group, struct task_struct *p, int this_cpu)
-                cpumask_t *tmp)
 {
        unsigned long load, min_load = ULONG_MAX;
        int idlest = -1;
        int i;
        /* Traverse only the allowed CPUs */
-        cpus_and(*tmp, group->cpumask, p->cpus_allowed);
+        for_each_cpu_and(i, sched_group_cpus(group), &p->cpus_allowed) {
-        for_each_cpu_mask_nr(i, *tmp) {
                load = weighted_cpuload(i);
                if (load < min_load || (load == min_load && i == this_cpu)) {
@@ -2193,7 +2200,6 @@ static int sched_balance_self(int cpu, int flag)
                update_shares(sd);
        while (sd) {
-                cpumask_t span, tmpmask;
                struct sched_group *group;
                int new_cpu, weight;
@@ -2202,14 +2208,13 @@ static int sched_balance_self(int cpu, int flag)
                        continue;
                }
-                span = sd->span;
                group = find_idlest_group(sd, t, cpu);
                if (!group) {
                        sd = sd->child;
                        continue;
                }
-                new_cpu = find_idlest_cpu(group, t, cpu, &tmpmask);
+                new_cpu = find_idlest_cpu(group, t, cpu);
                if (new_cpu == -1 || new_cpu == cpu) {
                        /* Now try balancing at a lower domain level of cpu */
                        sd = sd->child;
@@ -2218,10 +2223,10 @@ static int sched_balance_self(int cpu, int flag)
                /* Now try balancing at a lower domain level of new_cpu */
                cpu = new_cpu;
+                weight = cpumask_weight(sched_domain_span(sd));
                sd = NULL;
-                weight = cpus_weight(span);
                for_each_domain(cpu, tmp) {
-                        if (weight <= cpus_weight(tmp->span))
+                        if (weight <= cpumask_weight(sched_domain_span(tmp)))
                                break;
                        if (tmp->flags & flag)
                                sd = tmp;
@@ -2266,7 +2271,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
                cpu = task_cpu(p);
                for_each_domain(this_cpu, sd) {
-                        if (cpu_isset(cpu, sd->span)) {
+                        if (cpumask_test_cpu(cpu, sched_domain_span(sd))) {
                                update_shares(sd);
                                break;
                        }
@@ -2315,7 +2320,7 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
        else {
                struct sched_domain *sd;
                for_each_domain(this_cpu, sd) {
-                        if (cpu_isset(cpu, sd->span)) {
+                        if (cpumask_test_cpu(cpu, sched_domain_span(sd))) {
                                schedstat_inc(sd, ttwu_wake_remote);
                                break;
                        }
@@ -2846,7 +2851,7 @@ static void sched_migrate_task(struct task_struct *p, int dest_cpu)
        struct rq *rq;
        rq = task_rq_lock(p, &flags);
-        if (!cpu_isset(dest_cpu, p->cpus_allowed)
+        if (!cpumask_test_cpu(dest_cpu, &p->cpus_allowed)
            || unlikely(!cpu_active(dest_cpu)))
                goto out;
@@ -2911,7 +2916,7 @@ int can_migrate_task(struct task_struct *p, struct rq *rq, int this_cpu,
         * 2) cannot be migrated to this CPU due to cpus_allowed, or
         * 3) are cache-hot on their current CPU.
         */
-        if (!cpu_isset(this_cpu, p->cpus_allowed)) {
+        if (!cpumask_test_cpu(this_cpu, &p->cpus_allowed)) {
                schedstat_inc(p, se.nr_failed_migrations_affine);
                return 0;
        }
@@ -3086,7 +3091,7 @@ static int move_one_task(struct rq *this_rq, int this_cpu, struct rq *busiest,
 static struct sched_group *
 find_busiest_group(struct sched_domain *sd, int this_cpu,
                   unsigned long *imbalance, enum cpu_idle_type idle,
-                   int *sd_idle, const cpumask_t *cpus, int *balance)
+                   int *sd_idle, const struct cpumask *cpus, int *balance)
 {
        struct sched_group *busiest = NULL, *this = NULL, *group = sd->groups;
        unsigned long max_load, avg_load, total_load, this_load, total_pwr;
@@ -3122,10 +3127,11 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
                unsigned long sum_avg_load_per_task;
                unsigned long avg_load_per_task;
-                local_group = cpu_isset(this_cpu, group->cpumask);
+                local_group = cpumask_test_cpu(this_cpu,
+                                               sched_group_cpus(group));
                if (local_group)
-                        balance_cpu = first_cpu(group->cpumask);
+                        balance_cpu = cpumask_first(sched_group_cpus(group));
                /* Tally up the load of all CPUs in the group */
                sum_weighted_load = sum_nr_running = avg_load = 0;
@@ -3134,13 +3140,8 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
                max_cpu_load = 0;
                min_cpu_load = ~0UL;
-                for_each_cpu_mask_nr(i, group->cpumask) {
+                for_each_cpu_and(i, sched_group_cpus(group), cpus) {
-                        struct rq *rq;
+                        struct rq *rq = cpu_rq(i);
-                        if (!cpu_isset(i, *cpus))
-                                continue;
-                        rq = cpu_rq(i);
                        if (*sd_idle && rq->nr_running)
                                *sd_idle = 0;
@@ -3251,8 +3252,8 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
                 */
                if ((sum_nr_running < min_nr_running) ||
                    (sum_nr_running == min_nr_running &&
-                     first_cpu(group->cpumask) <
+                     cpumask_first(sched_group_cpus(group)) >
-                     first_cpu(group_min->cpumask))) {
+                     cpumask_first(sched_group_cpus(group_min)))) {
                        group_min = group;
                        min_nr_running = sum_nr_running;
                        min_load_per_task = sum_weighted_load /
@@ -3267,8 +3268,8 @@ find_busiest_group(struct sched_domain *sd, int this_cpu,
                if (sum_nr_running <= group_capacity - 1) {
                        if (sum_nr_running > leader_nr_running ||
                            (sum_nr_running == leader_nr_running &&
-                             first_cpu(group->cpumask) >
+                             cpumask_first(sched_group_cpus(group)) <
-                              first_cpu(group_leader->cpumask))) {
+                             cpumask_first(sched_group_cpus(group_leader)))) {
                                group_leader = group;
                                leader_nr_running = sum_nr_running;
                        }
@@ -3394,6 +3395,10 @@ out_balanced:
        if (this == group_leader && group_leader != group_min) {
                *imbalance = min_load_per_task;
+                if (sched_mc_power_savings >= POWERSAVINGS_BALANCE_WAKEUP) {
+                        cpu_rq(this_cpu)->rd->sched_mc_preferred_wakeup_cpu =
+                                cpumask_first(sched_group_cpus(group_leader));
+                }
                return group_min;
        }
 #endif
@@ -3407,16 +3412,16 @@ ret:
 */
 static struct rq *
 find_busiest_queue(struct sched_group *group, enum cpu_idle_type idle,
-                   unsigned long imbalance, const cpumask_t *cpus)
+                   unsigned long imbalance, const struct cpumask *cpus)
 {
        struct rq *busiest = NULL, *rq;
        unsigned long max_load = 0;
        int i;
-        for_each_cpu_mask_nr(i, group->cpumask) {
+        for_each_cpu(i, sched_group_cpus(group)) {
                unsigned long wl;
-                if (!cpu_isset(i, *cpus))
+                if (!cpumask_test_cpu(i, cpus))
                        continue;
                rq = cpu_rq(i);
@@ -3446,7 +3451,7 @@ find_busiest_queue(struct sched_group *group, enum cpu_idle_type idle,
 */
 static int load_balance(int this_cpu, struct rq *this_rq,
                        struct sched_domain *sd, enum cpu_idle_type idle,
-                        int *balance, cpumask_t *cpus)
+                        int *balance, struct cpumask *cpus)
 {
        int ld_moved, all_pinned = 0, active_balance = 0, sd_idle = 0;
        struct sched_group *group;
@@ -3454,7 +3459,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
        struct rq *busiest;
        unsigned long flags;
-        cpus_setall(*cpus);
+        cpumask_setall(cpus);
        /*
         * When power savings policy is enabled for the parent domain, idle
@@ -3514,8 +3519,8 @@ redo:
                /* All tasks on this runqueue were pinned by CPU affinity */
                if (unlikely(all_pinned)) {
-                        cpu_clear(cpu_of(busiest), *cpus);
+                        cpumask_clear_cpu(cpu_of(busiest), cpus);
-                        if (!cpus_empty(*cpus))
+                        if (!cpumask_empty(cpus))
                                goto redo;
                        goto out_balanced;
                }
@@ -3532,7 +3537,8 @@ redo:
                        /* don't kick the migration_thread, if the curr
                         * task on busiest cpu can't be moved to this_cpu
                         */
-                        if (!cpu_isset(this_cpu, busiest->curr->cpus_allowed)) {
+                        if (!cpumask_test_cpu(this_cpu,
+                                              &busiest->curr->cpus_allowed)) {
                                spin_unlock_irqrestore(&busiest->lock, flags);
                                all_pinned = 1;
                                goto out_one_pinned;
@@ -3607,7 +3613,7 @@ out:
 */
 static int
 load_balance_newidle(int this_cpu, struct rq *this_rq, struct sched_domain *sd,
-                        cpumask_t *cpus)
+                        struct cpumask *cpus)
 {
        struct sched_group *group;
        struct rq *busiest = NULL;
@@ -3616,7 +3622,7 @@ load_balance_newidle(int this_cpu, struct rq *this_rq, struct sched_domain *sd,
        int sd_idle = 0;
        int all_pinned = 0;
-        cpus_setall(*cpus);
+        cpumask_setall(cpus);
        /*
         * When power savings policy is enabled for the parent domain, idle
@@ -3660,17 +3666,71 @@ redo:
                double_unlock_balance(this_rq, busiest);
                if (unlikely(all_pinned)) {
-                        cpu_clear(cpu_of(busiest), *cpus);
+                        cpumask_clear_cpu(cpu_of(busiest), cpus);
-                        if (!cpus_empty(*cpus))
+                        if (!cpumask_empty(cpus))
                                goto redo;
                }
        }
        if (!ld_moved) {
+                int active_balance = 0;
                schedstat_inc(sd, lb_failed[CPU_NEWLY_IDLE]);
                if (!sd_idle && sd->flags & SD_SHARE_CPUPOWER &&
                    !test_sd_parent(sd, SD_POWERSAVINGS_BALANCE))
                        return -1;
+                if (sched_mc_power_savings < POWERSAVINGS_BALANCE_WAKEUP)
+                        return -1;
+                if (sd->nr_balance_failed++ < 2)
+                        return -1;
+                /*
+                 * The only task running in a non-idle cpu can be moved to this
+                 * cpu in an attempt to completely freeup the other CPU
+                 * package. The same method used to move task in load_balance()
+                 * have been extended for load_balance_newidle() to speedup
+                 * consolidation at sched_mc=POWERSAVINGS_BALANCE_WAKEUP (2)
+                 *
+                 * The package power saving logic comes from
+                 * find_busiest_group().  If there are no imbalance, then
+                 * f_b_g() will return NULL.  However when sched_mc={1,2} then
+                 * f_b_g() will select a group from which a running task may be
+                 * pulled to this cpu in order to make the other package idle.
+                 * If there is no opportunity to make a package idle and if
+                 * there are no imbalance, then f_b_g() will return NULL and no
+                 * action will be taken in load_balance_newidle().
+                 *
+                 * Under normal task pull operation due to imbalance, there
+                 * will be more than one task in the source run queue and
+                 * move_tasks() will succeed.  ld_moved will be true and this
+                 * active balance code will not be triggered.
+                 */
+                /* Lock busiest in correct order while this_rq is held */
+                double_lock_balance(this_rq, busiest);
+                /*
+                 * don't kick the migration_thread, if the curr
+                 * task on busiest cpu can't be moved to this_cpu
+                 */
+                if (!cpu_isset(this_cpu, busiest->curr->cpus_allowed)) {
+                        double_unlock_balance(this_rq, busiest);
+                        all_pinned = 1;
+                        return ld_moved;
+                }
+                if (!busiest->active_balance) {
+                        busiest->active_balance = 1;
+                        busiest->push_cpu = this_cpu;
+                        active_balance = 1;
+                }
+                double_unlock_balance(this_rq, busiest);
+                if (active_balance)
+                        wake_up_process(busiest->migration_thread);
        } else
                sd->nr_balance_failed = 0;
@@ -3696,7 +3756,10 @@ static void idle_balance(int this_cpu, struct rq *this_rq)
        struct sched_domain *sd;
        int pulled_task = 0;
        unsigned long next_balance = jiffies + HZ;
-        cpumask_t tmpmask;
+        cpumask_var_t tmpmask;
+        if (!alloc_cpumask_var(&tmpmask, GFP_ATOMIC))
+                return;
        for_each_domain(this_cpu, sd) {
                unsigned long interval;
@@ -3707,7 +3770,7 @@ static void idle_balance(int this_cpu, struct rq *this_rq)
                if (sd->flags & SD_BALANCE_NEWIDLE)
                        /* If we've pulled tasks over stop searching: */
                        pulled_task = load_balance_newidle(this_cpu, this_rq,
-                                                           sd, &tmpmask);
+                                                           sd, tmpmask);
                interval = msecs_to_jiffies(sd->balance_interval);
                if (time_after(next_balance, sd->last_balance + interval))
@@ -3722,6 +3785,7 @@ static void idle_balance(int this_cpu, struct rq *this_rq)
                 */
                this_rq->next_balance = next_balance;
        }
+        free_cpumask_var(tmpmask);
 }
 /*
@@ -3759,7 +3823,7 @@ static void active_load_balance(struct rq *busiest_rq, int busiest_cpu)
        /* Search for an sd spanning us and the target CPU. */
        for_each_domain(target_cpu, sd) {
                if ((sd->flags & SD_LOAD_BALANCE) &&
-                    cpu_isset(busiest_cpu, sd->span))
+                    cpumask_test_cpu(busiest_cpu, sched_domain_span(sd)))
                                break;
        }
@@ -3778,10 +3842,9 @@ static void active_load_balance(struct rq *busiest_rq, int busiest_cpu)
 #ifdef CONFIG_NO_HZ
 static struct {
        atomic_t load_balancer;
-        cpumask_t cpu_mask;
+        cpumask_var_t cpu_mask;
 } nohz ____cacheline_aligned = {
        .load_balancer = ATOMIC_INIT(-1),
-        .cpu_mask = CPU_MASK_NONE,
 };
 /*
@@ -3809,7 +3872,7 @@ int select_nohz_load_balancer(int stop_tick)
        int cpu = smp_processor_id();
        if (stop_tick) {
-                cpu_set(cpu, nohz.cpu_mask);
+                cpumask_set_cpu(cpu, nohz.cpu_mask);
                cpu_rq(cpu)->in_nohz_recently = 1;
                /*
@@ -3823,7 +3886,7 @@ int select_nohz_load_balancer(int stop_tick)
                }
                /* time for ilb owner also to sleep */
-                if (cpus_weight(nohz.cpu_mask) == num_online_cpus()) {
+                if (cpumask_weight(nohz.cpu_mask) == num_online_cpus()) {
                        if (atomic_read(&nohz.load_balancer) == cpu)
                                atomic_set(&nohz.load_balancer, -1);
                        return 0;
@@ -3836,10 +3899,10 @@ int select_nohz_load_balancer(int stop_tick)
                } else if (atomic_read(&nohz.load_balancer) == cpu)
                        return 1;
        } else {
-                if (!cpu_isset(cpu, nohz.cpu_mask))
+                if (!cpumask_test_cpu(cpu, nohz.cpu_mask))
                        return 0;
-                cpu_clear(cpu, nohz.cpu_mask);
+                cpumask_clear_cpu(cpu, nohz.cpu_mask);
                if (atomic_read(&nohz.load_balancer) == cpu)
                        if (atomic_cmpxchg(&nohz.load_balancer, cpu, -1) != cpu)
@@ -3867,7 +3930,11 @@ static void rebalance_domains(int cpu, enum cpu_idle_type idle)
        unsigned long next_balance = jiffies + 60*HZ;
        int update_next_balance = 0;
        int need_serialize;
-        cpumask_t tmp;
+        cpumask_var_t tmp;
+        /* Fails alloc?  Rebalancing probably not a priority right now. */
+        if (!alloc_cpumask_var(&tmp, GFP_ATOMIC))
+                return;
        for_each_domain(cpu, sd) {
                if (!(sd->flags & SD_LOAD_BALANCE))
@@ -3892,7 +3959,7 @@ static void rebalance_domains(int cpu, enum cpu_idle_type idle)
                }
                if (time_after_eq(jiffies, sd->last_balance + interval)) {
-                        if (load_balance(cpu, rq, sd, idle, &balance, &tmp)) {
+                        if (load_balance(cpu, rq, sd, idle, &balance, tmp)) {
                                /*
                                 * We've pulled tasks over so either we're no
                                 * longer idle, or one of our SMT siblings is
@@ -3926,6 +3993,8 @@ out:
         */
        if (likely(update_next_balance))
                rq->next_balance = next_balance;
+        free_cpumask_var(tmp);
 }
 /*
@@ -3950,12 +4019,13 @@ static void run_rebalance_domains(struct softirq_action *h)
         */
        if (this_rq->idle_at_tick &&
            atomic_read(&nohz.load_balancer) == this_cpu) {
-                cpumask_t cpus = nohz.cpu_mask;
                struct rq *rq;
                int balance_cpu;
-                cpu_clear(this_cpu, cpus);
+                for_each_cpu(balance_cpu, nohz.cpu_mask) {
-                for_each_cpu_mask_nr(balance_cpu, cpus) {
+                        if (balance_cpu == this_cpu)
+                                continue;
                        /*
                         * If this cpu gets work to do, stop the load balancing
                         * work being done for other cpus. Next load
@@ -3993,7 +4063,7 @@ static inline void trigger_load_balance(struct rq *rq, int cpu)
                rq->in_nohz_recently = 0;
                if (atomic_read(&nohz.load_balancer) == cpu) {
-                        cpu_clear(cpu, nohz.cpu_mask);
+                        cpumask_clear_cpu(cpu, nohz.cpu_mask);
                        atomic_set(&nohz.load_balancer, -1);
                }
@@ -4006,7 +4076,7 @@ static inline void trigger_load_balance(struct rq *rq, int cpu)
                         * TBD: Traverse the sched domains and nominate
                         * the nearest cpu in the nohz.cpu_mask.
                         */
-                        int ilb = first_cpu(nohz.cpu_mask);
+                        int ilb = cpumask_first(nohz.cpu_mask);
                        if (ilb < nr_cpu_ids)
                                resched_cpu(ilb);
@@ -4018,7 +4088,7 @@ static inline void trigger_load_balance(struct rq *rq, int cpu)
         * cpus with ticks stopped, is it time for that to stop?
         */
        if (rq->idle_at_tick && atomic_read(&nohz.load_balancer) == cpu &&
-            cpus_weight(nohz.cpu_mask) == num_online_cpus()) {
+            cpumask_weight(nohz.cpu_mask) == num_online_cpus()) {
                resched_cpu(cpu);
                return;
        }
@@ -4028,7 +4098,7 @@ static inline void trigger_load_balance(struct rq *rq, int cpu)
         * someone else, then no need raise the SCHED_SOFTIRQ
         */
        if (rq->idle_at_tick && atomic_read(&nohz.load_balancer) != cpu &&
-            cpu_isset(cpu, nohz.cpu_mask))
+            cpumask_test_cpu(cpu, nohz.cpu_mask))
                return;
 #endif
        if (time_after_eq(jiffies, rq->next_balance))
@@ -5401,10 +5471,9 @@ out_unlock:
        return retval;
 }
-long sched_setaffinity(pid_t pid, const cpumask_t *in_mask)
+long sched_setaffinity(pid_t pid, const struct cpumask *in_mask)
 {
-        cpumask_t cpus_allowed;
+        cpumask_var_t cpus_allowed, new_mask;
-        cpumask_t new_mask = *in_mask;
        struct task_struct *p;
        int retval;
@@ -5426,6 +5495,14 @@ long sched_setaffinity(pid_t pid, const cpumask_t *in_mask)
        get_task_struct(p);
        read_unlock(&tasklist_lock);
+        if (!alloc_cpumask_var(&cpus_allowed, GFP_KERNEL)) {
+                retval = -ENOMEM;
+                goto out_put_task;
+        }
+        if (!alloc_cpumask_var(&new_mask, GFP_KERNEL)) {
+                retval = -ENOMEM;
+                goto out_free_cpus_allowed;
+        }
        retval = -EPERM;
        if (!check_same_owner(p) && !capable(CAP_SYS_NICE))
                goto out_unlock;
@@ -5434,37 +5511,41 @@ long sched_setaffinity(pid_t pid, const cpumask_t *in_mask)
        if (retval)
                goto out_unlock;
-        cpuset_cpus_allowed(p, &cpus_allowed);
+        cpuset_cpus_allowed(p, cpus_allowed);
-        cpus_and(new_mask, new_mask, cpus_allowed);
+        cpumask_and(new_mask, in_mask, cpus_allowed);
 again:
-        retval = set_cpus_allowed_ptr(p, &new_mask);
+        retval = set_cpus_allowed_ptr(p, new_mask);
        if (!retval) {
-                cpuset_cpus_allowed(p, &cpus_allowed);
+                cpuset_cpus_allowed(p, cpus_allowed);
-                if (!cpus_subset(new_mask, cpus_allowed)) {
+                if (!cpumask_subset(new_mask, cpus_allowed)) {
                        /*
                         * We must have raced with a concurrent cpuset
                         * update. Just reset the cpus_allowed to the
                         * cpuset's cpus_allowed
                         */
-                        new_mask = cpus_allowed;
+                        cpumask_copy(new_mask, cpus_allowed);
                        goto again;
                }
        }
 out_unlock:
+        free_cpumask_var(new_mask);
+out_free_cpus_allowed:
+        free_cpumask_var(cpus_allowed);
+out_put_task:
        put_task_struct(p);
        put_online_cpus();
        return retval;
 }
 static int get_user_cpu_mask(unsigned long __user *user_mask_ptr, unsigned len,
-                             cpumask_t *new_mask)
+                             struct cpumask *new_mask)
 {
-        if (len < sizeof(cpumask_t)) {
+        if (len < cpumask_size())
-                memset(new_mask, 0, sizeof(cpumask_t));
+                cpumask_clear(new_mask);
-        } else if (len > sizeof(cpumask_t)) {
+        else if (len > cpumask_size())
-                len = sizeof(cpumask_t);
+                len = cpumask_size();
-        }
        return copy_from_user(new_mask, user_mask_ptr, len) ? -EFAULT : 0;
 }
@@ -5477,17 +5558,20 @@ static int get_user_cpu_mask(unsigned long __user *user_mask_ptr, unsigned len,
 asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
                                      unsigned long __user *user_mask_ptr)
 {
-        cpumask_t new_mask;
+        cpumask_var_t new_mask;
        int retval;
-        retval = get_user_cpu_mask(user_mask_ptr, len, &new_mask);
+        if (!alloc_cpumask_var(&new_mask, GFP_KERNEL))
-        if (retval)
+                return -ENOMEM;
-                return retval;
-        return sched_setaffinity(pid, &new_mask);
+        retval = get_user_cpu_mask(user_mask_ptr, len, new_mask);
+        if (retval == 0)
+                retval = sched_setaffinity(pid, new_mask);
+        free_cpumask_var(new_mask);
+        return retval;
 }
-long sched_getaffinity(pid_t pid, cpumask_t *mask)
+long sched_getaffinity(pid_t pid, struct cpumask *mask)
 {
        struct task_struct *p;
        int retval;
@@ -5504,7 +5588,7 @@ long sched_getaffinity(pid_t pid, cpumask_t *mask)
        if (retval)
                goto out_unlock;
-        cpus_and(*mask, p->cpus_allowed, cpu_online_map);
+        cpumask_and(mask, &p->cpus_allowed, cpu_online_mask);
 out_unlock:
        read_unlock(&tasklist_lock);
@@ -5523,19 +5607,24 @@ asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
                                      unsigned long __user *user_mask_ptr)
 {
        int ret;
-        cpumask_t mask;
+        cpumask_var_t mask;
-        if (len < sizeof(cpumask_t))
+        if (len < cpumask_size())
                return -EINVAL;
-        ret = sched_getaffinity(pid, &mask);
+        if (!alloc_cpumask_var(&mask, GFP_KERNEL))
-        if (ret < 0)
+                return -ENOMEM;
-                return ret;
-        if (copy_to_user(user_mask_ptr, &mask, sizeof(cpumask_t)))
+        ret = sched_getaffinity(pid, mask);
-                return -EFAULT;
+        if (ret == 0) {
+                if (copy_to_user(user_mask_ptr, mask, cpumask_size()))
+                        ret = -EFAULT;
+                else
+                        ret = cpumask_size();
+        }
+        free_cpumask_var(mask);
-        return sizeof(cpumask_t);
+        return ret;
 }
 /**
@@ -5877,7 +5966,7 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu)
        idle->se.exec_start = sched_clock();
        idle->prio = idle->normal_prio = MAX_PRIO;
-        idle->cpus_allowed = cpumask_of_cpu(cpu);
+        cpumask_copy(&idle->cpus_allowed, cpumask_of(cpu));
        __set_task_cpu(idle, cpu);
        rq->curr = rq->idle = idle;
@@ -5904,9 +5993,9 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu)
 * indicates which cpus entered this state. This is used
 * in the rcu update to wait only for active cpus. For system
 * which do not switch off the HZ timer nohz_cpu_mask should
- * always be CPU_MASK_NONE.
+ * always be CPU_BITS_NONE.
 */
-cpumask_t nohz_cpu_mask = CPU_MASK_NONE;
+cpumask_var_t nohz_cpu_mask;
 /*
 * Increase the granularity value when there are more CPUs,
@@ -5961,7 +6050,7 @@ static inline void sched_init_granularity(void)
 * task must not exit() & deallocate itself prematurely. The
 * call is not atomic; no spinlocks may be held.
 */
-int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask)
+int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask)
 {
        struct migration_req req;
        unsigned long flags;
@@ -5969,13 +6058,13 @@ int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask)
        int ret = 0;
        rq = task_rq_lock(p, &flags);
-        if (!cpus_intersects(*new_mask, cpu_online_map)) {
+        if (!cpumask_intersects(new_mask, cpu_online_mask)) {
                ret = -EINVAL;
                goto out;
        }
        if (unlikely((p->flags & PF_THREAD_BOUND) && p != current &&
-                     !cpus_equal(p->cpus_allowed, *new_mask))) {
+                     !cpumask_equal(&p->cpus_allowed, new_mask))) {
                ret = -EINVAL;
                goto out;
        }
@@ -5983,15 +6072,15 @@ int set_cpus_allowed_ptr(struct task_struct *p, const cpumask_t *new_mask)
        if (p->sched_class->set_cpus_allowed)
                p->sched_class->set_cpus_allowed(p, new_mask);
        else {
-                p->cpus_allowed = *new_mask;
+                cpumask_copy(&p->cpus_allowed, new_mask);
-                p->rt.nr_cpus_allowed = cpus_weight(*new_mask);
+                p->rt.nr_cpus_allowed = cpumask_weight(new_mask);
        }
        /* Can the task run on the task's current CPU? If so, we're done */
-        if (cpu_isset(task_cpu(p), *new_mask))
+        if (cpumask_test_cpu(task_cpu(p), new_mask))
                goto out;
-        if (migrate_task(p, any_online_cpu(*new_mask), &req)) {
+        if (migrate_task(p, cpumask_any_and(cpu_online_mask, new_mask), &req)) {
                /* Need help from migration thread: drop lock and wait. */
                task_rq_unlock(rq, &flags);
                wake_up_process(rq->migration_thread);
@@ -6033,7 +6122,7 @@ static int __migrate_task(struct task_struct *p, int src_cpu, int dest_cpu)
        if (task_cpu(p) != src_cpu)
                goto done;
        /* Affinity changed (again). */
-        if (!cpu_isset(dest_cpu, p->cpus_allowed))
+        if (!cpumask_test_cpu(dest_cpu, &p->cpus_allowed))
                goto fail;
        on_rq = p->se.on_rq;
@@ -6130,50 +6219,43 @@ static int __migrate_task_irq(struct task_struct *p, int src_cpu, int dest_cpu)
 */
 static void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p)
 {
-        unsigned long flags;
-        cpumask_t mask;
-        struct rq *rq;
        int dest_cpu;
+        /* FIXME: Use cpumask_of_node here. */
+        cpumask_t _nodemask = node_to_cpumask(cpu_to_node(dead_cpu));
+        const struct cpumask *nodemask = &_nodemask;
+again:
+        /* Look for allowed, online CPU in same node. */
+        for_each_cpu_and(dest_cpu, nodemask, cpu_online_mask)
+                if (cpumask_test_cpu(dest_cpu, &p->cpus_allowed))
+                        goto move;
+        /* Any allowed, online CPU? */
+        dest_cpu = cpumask_any_and(&p->cpus_allowed, cpu_online_mask);
+        if (dest_cpu < nr_cpu_ids)
+                goto move;
+        /* No more Mr. Nice Guy. */
+        if (dest_cpu >= nr_cpu_ids) {
+                cpuset_cpus_allowed_locked(p, &p->cpus_allowed);
+                dest_cpu = cpumask_any_and(cpu_online_mask, &p->cpus_allowed);
-        do {
+                /*
-                /* On same node? */
+                 * Don't tell them about moving exiting tasks or
-                mask = node_to_cpumask(cpu_to_node(dead_cpu));
+                 * kernel threads (both mm NULL), since they never
-                cpus_and(mask, mask, p->cpus_allowed);
+                 * leave kernel.
-                dest_cpu = any_online_cpu(mask);
+                 */
+                if (p->mm && printk_ratelimit()) {
-                /* On any allowed CPU? */
+                        printk(KERN_INFO "process %d (%s) no "
-                if (dest_cpu >= nr_cpu_ids)
+                               "longer affine to cpu%d\n",
-                        dest_cpu = any_online_cpu(p->cpus_allowed);
+                               task_pid_nr(p), p->comm, dead_cpu);
-                /* No more Mr. Nice Guy. */
-                if (dest_cpu >= nr_cpu_ids) {
-                        cpumask_t cpus_allowed;
-                        cpuset_cpus_allowed_locked(p, &cpus_allowed);
-                        /*
-                         * Try to stay on the same cpuset, where the
-                         * current cpuset may be a subset of all cpus.
-                         * The cpuset_cpus_allowed_locked() variant of
-                         * cpuset_cpus_allowed() will not block. It must be
-                         * called within calls to cpuset_lock/cpuset_unlock.
-                         */
-                        rq = task_rq_lock(p, &flags);
-                        p->cpus_allowed = cpus_allowed;
-                        dest_cpu = any_online_cpu(p->cpus_allowed);
-                        task_rq_unlock(rq, &flags);
-                        /*
-                         * Don't tell them about moving exiting tasks or
-                         * kernel threads (both mm NULL), since they never
-                         * leave kernel.
-                         */
-                        if (p->mm && printk_ratelimit()) {
-                                printk(KERN_INFO "process %d (%s) no "
-                                       "longer affine to cpu%d\n",
-                                        task_pid_nr(p), p->comm, dead_cpu);
-                        }
                }
-        } while (!__migrate_task_irq(p, dead_cpu, dest_cpu));
+        }
+move:
+        /* It can have affinity changed while we were choosing. */
+        if (unlikely(!__migrate_task_irq(p, dead_cpu, dest_cpu)))
+                goto again;
 }
 /*
@@ -6185,7 +6267,7 @@ static void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p)
 */
 static void migrate_nr_uninterruptible(struct rq *rq_src)
 {
-        struct rq *rq_dest = cpu_rq(any_online_cpu(*CPU_MASK_ALL_PTR));
+        struct rq *rq_dest = cpu_rq(cpumask_any(cpu_online_mask));
        unsigned long flags;
        local_irq_save(flags);
@@ -6475,7 +6557,7 @@ static void set_rq_online(struct rq *rq)
        if (!rq->online) {
                const struct sched_class *class;
-                cpu_set(rq->cpu, rq->rd->online);
+                cpumask_set_cpu(rq->cpu, rq->rd->online);
                rq->online = 1;
                for_each_class(class) {
@@ -6495,7 +6577,7 @@ static void set_rq_offline(struct rq *rq)
                                class->rq_offline(rq);
                }
-                cpu_clear(rq->cpu, rq->rd->online);
+                cpumask_clear_cpu(rq->cpu, rq->rd->online);
                rq->online = 0;
        }
 }
@@ -6536,7 +6618,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
                rq = cpu_rq(cpu);
                spin_lock_irqsave(&rq->lock, flags);
                if (rq->rd) {
-                        BUG_ON(!cpu_isset(cpu, rq->rd->span));
+                        BUG_ON(!cpumask_test_cpu(cpu, rq->rd->span));
                        set_rq_online(rq);
                }
@@ -6550,7 +6632,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
                        break;
                /* Unbind it from offline cpu so it can run. Fall thru. */
                kthread_bind(cpu_rq(cpu)->migration_thread,
-                             any_online_cpu(cpu_online_map));
+                             cpumask_any(cpu_online_mask));
                kthread_stop(cpu_rq(cpu)->migration_thread);
                cpu_rq(cpu)->migration_thread = NULL;
                break;
@@ -6600,7 +6682,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
                rq = cpu_rq(cpu);
                spin_lock_irqsave(&rq->lock, flags);
                if (rq->rd) {
-                        BUG_ON(!cpu_isset(cpu, rq->rd->span));
+                        BUG_ON(!cpumask_test_cpu(cpu, rq->rd->span));
                        set_rq_offline(rq);
                }
                spin_unlock_irqrestore(&rq->lock, flags);
@@ -6639,13 +6721,13 @@ early_initcall(migration_init);
 #ifdef CONFIG_SCHED_DEBUG
 static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
-                                  cpumask_t *groupmask)
+                                  struct cpumask *groupmask)
 {
        struct sched_group *group = sd->groups;
        char str[256];
-        cpulist_scnprintf(str, sizeof(str), sd->span);
+        cpulist_scnprintf(str, sizeof(str), sched_domain_span(sd));
-        cpus_clear(*groupmask);
+        cpumask_clear(groupmask);
        printk(KERN_DEBUG "%*s domain %d: ", level, "", level);
@@ -6659,11 +6741,11 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
        printk(KERN_CONT "span %s level %s\n", str, sd->name);
-        if (!cpu_isset(cpu, sd->span)) {
+        if (!cpumask_test_cpu(cpu, sched_domain_span(sd))) {
                printk(KERN_ERR "ERROR: domain->span does not contain "
                                "CPU%d\n", cpu);
        }
-        if (!cpu_isset(cpu, group->cpumask)) {
+        if (!cpumask_test_cpu(cpu, sched_group_cpus(group))) {
                printk(KERN_ERR "ERROR: domain->groups does not contain"
                                " CPU%d\n", cpu);
        }
@@ -6683,31 +6765,32 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
                        break;
                }
-                if (!cpus_weight(group->cpumask)) {
+                if (!cpumask_weight(sched_group_cpus(group))) {
                        printk(KERN_CONT "\n");
                        printk(KERN_ERR "ERROR: empty group\n");
                        break;
                }
-                if (cpus_intersects(*groupmask, group->cpumask)) {
+                if (cpumask_intersects(groupmask, sched_group_cpus(group))) {
                        printk(KERN_CONT "\n");
                        printk(KERN_ERR "ERROR: repeated CPUs\n");
                        break;
                }
-                cpus_or(*groupmask, *groupmask, group->cpumask);
+                cpumask_or(groupmask, groupmask, sched_group_cpus(group));
-                cpulist_scnprintf(str, sizeof(str), group->cpumask);
+                cpulist_scnprintf(str, sizeof(str), sched_group_cpus(group));
                printk(KERN_CONT " %s", str);
                group = group->next;
        } while (group != sd->groups);
        printk(KERN_CONT "\n");
-        if (!cpus_equal(sd->span, *groupmask))
+        if (!cpumask_equal(sched_domain_span(sd), groupmask))
                printk(KERN_ERR "ERROR: groups don't span domain->span\n");
-        if (sd->parent && !cpus_subset(*groupmask, sd->parent->span))
+        if (sd->parent &&
+            !cpumask_subset(groupmask, sched_domain_span(sd->parent)))
                printk(KERN_ERR "ERROR: parent span is not a superset "
                        "of domain->span\n");
        return 0;
@@ -6715,7 +6798,7 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
 static void sched_domain_debug(struct sched_domain *sd, int cpu)
 {
-        cpumask_t *groupmask;
+        cpumask_var_t groupmask;
        int level = 0;
        if (!sd) {
@@ -6725,8 +6808,7 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
        printk(KERN_DEBUG "CPU%d attaching sched-domain:\n", cpu);
-        groupmask = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
+        if (!alloc_cpumask_var(&groupmask, GFP_KERNEL)) {
-        if (!groupmask) {
                printk(KERN_DEBUG "Cannot load-balance (out of memory)\n");
                return;
        }
@@ -6739,7 +6821,7 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
                if (!sd)
                        break;
        }
-        kfree(groupmask);
+        free_cpumask_var(groupmask);
 }
 #else /* !CONFIG_SCHED_DEBUG */
 # define sched_domain_debug(sd, cpu) do { } while (0)
@@ -6747,7 +6829,7 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
 static int sd_degenerate(struct sched_domain *sd)
 {
-        if (cpus_weight(sd->span) == 1)
+        if (cpumask_weight(sched_domain_span(sd)) == 1)
                return 1;
        /* Following flags need at least 2 groups */
@@ -6778,7 +6860,7 @@ sd_parent_degenerate(struct sched_domain *sd, struct sched_domain *parent)
        if (sd_degenerate(parent))
                return 1;
-        if (!cpus_equal(sd->span, parent->span))
+        if (!cpumask_equal(sched_domain_span(sd), sched_domain_span(parent)))
                return 0;
        /* Does parent contain flags not in child? */
@@ -6802,6 +6884,16 @@ sd_parent_degenerate(struct sched_domain *sd, struct sched_domain *parent)
        return 1;
 }
+static void free_rootdomain(struct root_domain *rd)
+{
+        cpupri_cleanup(&rd->cpupri);
+        free_cpumask_var(rd->rto_mask);
+        free_cpumask_var(rd->online);
+        free_cpumask_var(rd->span);
+        kfree(rd);
+}
 static void rq_attach_root(struct rq *rq, struct root_domain *rd)
 {
        unsigned long flags;
@@ -6811,38 +6903,63 @@ static void rq_attach_root(struct rq *rq, struct root_domain *rd)
        if (rq->rd) {
                struct root_domain *old_rd = rq->rd;
-                if (cpu_isset(rq->cpu, old_rd->online))
+                if (cpumask_test_cpu(rq->cpu, old_rd->online))
                        set_rq_offline(rq);
-                cpu_clear(rq->cpu, old_rd->span);
+                cpumask_clear_cpu(rq->cpu, old_rd->span);
                if (atomic_dec_and_test(&old_rd->refcount))
-                        kfree(old_rd);
+                        free_rootdomain(old_rd);
        }
        atomic_inc(&rd->refcount);
        rq->rd = rd;
-        cpu_set(rq->cpu, rd->span);
+        cpumask_set_cpu(rq->cpu, rd->span);
-        if (cpu_isset(rq->cpu, cpu_online_map))
+        if (cpumask_test_cpu(rq->cpu, cpu_online_mask))
                set_rq_online(rq);
        spin_unlock_irqrestore(&rq->lock, flags);
 }
-static void init_rootdomain(struct root_domain *rd)
+static int init_rootdomain(struct root_domain *rd, bool bootmem)
 {
        memset(rd, 0, sizeof(*rd));
-        cpus_clear(rd->span);
+        if (bootmem) {
-        cpus_clear(rd->online);
+                alloc_bootmem_cpumask_var(&def_root_domain.span);
+                alloc_bootmem_cpumask_var(&def_root_domain.online);
+                alloc_bootmem_cpumask_var(&def_root_domain.rto_mask);
+                cpupri_init(&rd->cpupri, true);
+                return 0;
+        }
+        if (!alloc_cpumask_var(&rd->span, GFP_KERNEL))
+                goto free_rd;
+        if (!alloc_cpumask_var(&rd->online, GFP_KERNEL))
+                goto free_span;
+        if (!alloc_cpumask_var(&rd->rto_mask, GFP_KERNEL))
+                goto free_online;
+        if (cpupri_init(&rd->cpupri, false) != 0)
+                goto free_rto_mask;
+        return 0;
-        cpupri_init(&rd->cpupri);
+free_rto_mask:
+        free_cpumask_var(rd->rto_mask);
+free_online:
+        free_cpumask_var(rd->online);
+free_span:
+        free_cpumask_var(rd->span);
+free_rd:
+        kfree(rd);
+        return -ENOMEM;
 }
 static void init_defrootdomain(void)
 {
-        init_rootdomain(&def_root_domain);
+        init_rootdomain(&def_root_domain, true);
        atomic_set(&def_root_domain.refcount, 1);
 }
@@ -6854,7 +6971,10 @@ static struct root_domain *alloc_rootdomain(void)
        if (!rd)
                return NULL;
-        init_rootdomain(rd);
+        if (init_rootdomain(rd, false) != 0) {
+                kfree(rd);
+                return NULL;
+        }
        return rd;
 }
@@ -6896,19 +7016,12 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu)
 }
 /* cpus with isolated domains */
-static cpumask_t cpu_isolated_map = CPU_MASK_NONE;
+static cpumask_var_t cpu_isolated_map;
 /* Setup the mask of cpus configured for isolated domains */
 static int __init isolated_cpu_setup(char *str)
 {
-        static int __initdata ints[NR_CPUS];
+        cpulist_parse(str, cpu_isolated_map);
-        int i;
-        str = get_options(str, ARRAY_SIZE(ints), ints);
-        cpus_clear(cpu_isolated_map);
-        for (i = 1; i <= ints[0]; i++)
-                if (ints[i] < NR_CPUS)
-                        cpu_set(ints[i], cpu_isolated_map);
        return 1;
 }
@@ -6917,42 +7030,43 @@ __setup("isolcpus=", isolated_cpu_setup);
 /*
 * init_sched_build_groups takes the cpumask we wish to span, and a pointer
 * to a function which identifies what group(along with sched group) a CPU
- * belongs to. The return value of group_fn must be a >= 0 and < NR_CPUS
+ * belongs to. The return value of group_fn must be a >= 0 and < nr_cpu_ids
- * (due to the fact that we keep track of groups covered with a cpumask_t).
+ * (due to the fact that we keep track of groups covered with a struct cpumask).
 *
 * init_sched_build_groups will build a circular linked list of the groups
 * covered by the given span, and will set each group's ->cpumask correctly,
 * and ->cpu_power to 0.
 */
 static void
-init_sched_build_groups(const cpumask_t *span, const cpumask_t *cpu_map,
+init_sched_build_groups(const struct cpumask *span,
-                        int (*group_fn)(int cpu, const cpumask_t *cpu_map,
+                        const struct cpumask *cpu_map,
+                        int (*group_fn)(int cpu, const struct cpumask *cpu_map,
                                        struct sched_group **sg,
-                                        cpumask_t *tmpmask),
+                                        struct cpumask *tmpmask),
-                        cpumask_t *covered, cpumask_t *tmpmask)
+                        struct cpumask *covered, struct cpumask *tmpmask)
 {
        struct sched_group *first = NULL, *last = NULL;
        int i;
-        cpus_clear(*covered);
+        cpumask_clear(covered);
-        for_each_cpu_mask_nr(i, *span) {
+        for_each_cpu(i, span) {
                struct sched_group *sg;
                int group = group_fn(i, cpu_map, &sg, tmpmask);
                int j;
-                if (cpu_isset(i, *covered))
+                if (cpumask_test_cpu(i, covered))
                        continue;
-                cpus_clear(sg->cpumask);
+                cpumask_clear(sched_group_cpus(sg));
                sg->__cpu_power = 0;
-                for_each_cpu_mask_nr(j, *span) {
+                for_each_cpu(j, span) {
                        if (group_fn(j, cpu_map, NULL, tmpmask) != group)
                                continue;
-                        cpu_set(j, *covered);
+                        cpumask_set_cpu(j, covered);
-                        cpu_set(j, sg->cpumask);
+                        cpumask_set_cpu(j, sched_group_cpus(sg));
                }
                if (!first)
                        first = sg;
@@ -7016,9 +7130,10 @@ static int find_next_best_node(int node, nodemask_t *used_nodes)
 * should be one that prevents unnecessary balancing, but also spreads tasks
 * out optimally.
 */
-static void sched_domain_node_span(int node, cpumask_t *span)
+static void sched_domain_node_span(int node, struct cpumask *span)
 {
        nodemask_t used_nodes;
+        /* FIXME: use cpumask_of_node() */
        node_to_cpumask_ptr(nodemask, node);
        int i;
@@ -7040,18 +7155,33 @@ static void sched_domain_node_span(int node, cpumask_t *span)
 int sched_smt_power_savings = 0, sched_mc_power_savings = 0;
 /*
+ * The cpus mask in sched_group and sched_domain hangs off the end.
+ * FIXME: use cpumask_var_t or dynamic percpu alloc to avoid wasting space
+ * for nr_cpu_ids < CONFIG_NR_CPUS.
+ */
+struct static_sched_group {
+        struct sched_group sg;
+        DECLARE_BITMAP(cpus, CONFIG_NR_CPUS);
+};
+struct static_sched_domain {
+        struct sched_domain sd;
+        DECLARE_BITMAP(span, CONFIG_NR_CPUS);
+};
+/*
 * SMT sched-domains:
 */
 #ifdef CONFIG_SCHED_SMT
-static DEFINE_PER_CPU(struct sched_domain, cpu_domains);
+static DEFINE_PER_CPU(struct static_sched_domain, cpu_domains);
-static DEFINE_PER_CPU(struct sched_group, sched_group_cpus);
+static DEFINE_PER_CPU(struct static_sched_group, sched_group_cpus);
 static int
-cpu_to_cpu_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
+cpu_to_cpu_group(int cpu, const struct cpumask *cpu_map,
-                 cpumask_t *unused)
+                 struct sched_group **sg, struct cpumask *unused)
 {
        if (sg)
-                *sg = &per_cpu(sched_group_cpus, cpu);
+                *sg = &per_cpu(sched_group_cpus, cpu).sg;
        return cpu;
 }
 #endif /* CONFIG_SCHED_SMT */
@@ -7060,56 +7190,55 @@ cpu_to_cpu_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
 * multi-core sched-domains:
 */
 #ifdef CONFIG_SCHED_MC
-static DEFINE_PER_CPU(struct sched_domain, core_domains);
+static DEFINE_PER_CPU(struct static_sched_domain, core_domains);
-static DEFINE_PER_CPU(struct sched_group, sched_group_core);
+static DEFINE_PER_CPU(struct static_sched_group, sched_group_core);
 #endif /* CONFIG_SCHED_MC */
 #if defined(CONFIG_SCHED_MC) && defined(CONFIG_SCHED_SMT)
 static int
-cpu_to_core_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
+cpu_to_core_group(int cpu, const struct cpumask *cpu_map,
-                  cpumask_t *mask)
+                  struct sched_group **sg, struct cpumask *mask)
 {
        int group;
-        *mask = per_cpu(cpu_sibling_map, cpu);
+        cpumask_and(mask, &per_cpu(cpu_sibling_map, cpu), cpu_map);
-        cpus_and(*mask, *mask, *cpu_map);
+        group = cpumask_first(mask);
-        group = first_cpu(*mask);
        if (sg)
-                *sg = &per_cpu(sched_group_core, group);
+                *sg = &per_cpu(sched_group_core, group).sg;
        return group;
 }
 #elif defined(CONFIG_SCHED_MC)
 static int
-cpu_to_core_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
+cpu_to_core_group(int cpu, const struct cpumask *cpu_map,
-                  cpumask_t *unused)
+                  struct sched_group **sg, struct cpumask *unused)
 {
        if (sg)
-                *sg = &per_cpu(sched_group_core, cpu);
+                *sg = &per_cpu(sched_group_core, cpu).sg;
        return cpu;
 }
 #endif
-static DEFINE_PER_CPU(struct sched_domain, phys_domains);
+static DEFINE_PER_CPU(struct static_sched_domain, phys_domains);
-static DEFINE_PER_CPU(struct sched_group, sched_group_phys);
+static DEFINE_PER_CPU(struct static_sched_group, sched_group_phys);
 static int
-cpu_to_phys_group(int cpu, const cpumask_t *cpu_map, struct sched_group **sg,
+cpu_to_phys_group(int cpu, const struct cpumask *cpu_map,
-                  cpumask_t *mask)
+                  struct sched_group **sg, struct cpumask *mask)
 {
        int group;
 #ifdef CONFIG_SCHED_MC
+        /* FIXME: Use cpu_coregroup_mask. */
        *mask = cpu_coregroup_map(cpu);
        cpus_and(*mask, *mask, *cpu_map);
-        group = first_cpu(*mask);
+        group = cpumask_first(mask);
 #elif defined(CONFIG_SCHED_SMT)
-        *mask = per_cpu(cpu_sibling_map, cpu);
+        cpumask_and(mask, &per_cpu(cpu_sibling_map, cpu), cpu_map);
-        cpus_and(*mask, *mask, *cpu_map);
+        group = cpumask_first(mask);
-        group = first_cpu(*mask);
 #else
        group = cpu;
 #endif
        if (sg)
-                *sg = &per_cpu(sched_group_phys, group);
+                *sg = &per_cpu(sched_group_phys, group).sg;
        return group;
 }
@@ -7123,19 +7252,21 @@ static DEFINE_PER_CPU(struct sched_domain, node_domains);
 static struct sched_group ***sched_group_nodes_bycpu;
 static DEFINE_PER_CPU(struct sched_domain, allnodes_domains);
-static DEFINE_PER_CPU(struct sched_group, sched_group_allnodes);
+static DEFINE_PER_CPU(struct static_sched_group, sched_group_allnodes);
-static int cpu_to_allnodes_group(int cpu, const cpumask_t *cpu_map,
+static int cpu_to_allnodes_group(int cpu, const struct cpumask *cpu_map,
-                                 struct sched_group **sg, cpumask_t *nodemask)
+                                 struct sched_group **sg,
+                                 struct cpumask *nodemask)
 {
        int group;
+        /* FIXME: use cpumask_of_node */
+        node_to_cpumask_ptr(pnodemask, cpu_to_node(cpu));
-        *nodemask = node_to_cpumask(cpu_to_node(cpu));
+        cpumask_and(nodemask, pnodemask, cpu_map);
-        cpus_and(*nodemask, *nodemask, *cpu_map);
+        group = cpumask_first(nodemask);
-        group = first_cpu(*nodemask);
        if (sg)
-                *sg = &per_cpu(sched_group_allnodes, group);
+                *sg = &per_cpu(sched_group_allnodes, group).sg;
        return group;
 }
@@ -7147,11 +7278,11 @@ static void init_numa_sched_groups_power(struct sched_group *group_head)
        if (!sg)
                return;
        do {
-                for_each_cpu_mask_nr(j, sg->cpumask) {
+                for_each_cpu(j, sched_group_cpus(sg)) {
                        struct sched_domain *sd;
-                        sd = &per_cpu(phys_domains, j);
+                        sd = &per_cpu(phys_domains, j).sd;
-                        if (j != first_cpu(sd->groups->cpumask)) {
+                        if (j != cpumask_first(sched_group_cpus(sd->groups))) {
                                /*
                                 * Only add "power" once for each
                                 * physical package.
@@ -7168,11 +7299,12 @@ static void init_numa_sched_groups_power(struct sched_group *group_head)
 #ifdef CONFIG_NUMA
 /* Free memory allocated for various sched_group structures */
-static void free_sched_groups(const cpumask_t *cpu_map, cpumask_t *nodemask)
+static void free_sched_groups(const struct cpumask *cpu_map,
+                              struct cpumask *nodemask)
 {
        int cpu, i;
-        for_each_cpu_mask_nr(cpu, *cpu_map) {
+        for_each_cpu(cpu, cpu_map) {
                struct sched_group **sched_group_nodes
                        = sched_group_nodes_bycpu[cpu];
@@ -7181,10 +7313,11 @@ static void free_sched_groups(const cpumask_t *cpu_map, cpumask_t *nodemask)
                for (i = 0; i < nr_node_ids; i++) {
                        struct sched_group *oldsg, *sg = sched_group_nodes[i];
+                        /* FIXME: Use cpumask_of_node */
+                        node_to_cpumask_ptr(pnodemask, i);
-                        *nodemask = node_to_cpumask(i);
+                        cpus_and(*nodemask, *pnodemask, *cpu_map);
-                        cpus_and(*nodemask, *nodemask, *cpu_map);
+                        if (cpumask_empty(nodemask))
-                        if (cpus_empty(*nodemask))
                                continue;
                        if (sg == NULL)
@@ -7202,7 +7335,8 @@ next_sg:
        }
 }
 #else /* !CONFIG_NUMA */
-static void free_sched_groups(const cpumask_t *cpu_map, cpumask_t *nodemask)
+static void free_sched_groups(const struct cpumask *cpu_map,
+                              struct cpumask *nodemask)
 {
 }
 #endif /* CONFIG_NUMA */
@@ -7228,7 +7362,7 @@ static void init_sched_groups_power(int cpu, struct sched_domain *sd)
        WARN_ON(!sd || !sd->groups);
-        if (cpu != first_cpu(sd->groups->cpumask))
+        if (cpu != cpumask_first(sched_group_cpus(sd->groups)))
                return;
        child = sd->child;
@@ -7293,48 +7427,6 @@ SD_INIT_FUNC(CPU)
 SD_INIT_FUNC(MC)
 #endif
-/*
- * To minimize stack usage kmalloc room for cpumasks and share the
- * space as the usage in build_sched_domains() dictates.  Used only
- * if the amount of space is significant.
- */
-struct allmasks {
-        cpumask_t tmpmask;                      /* make this one first */
-        union {
-                cpumask_t nodemask;
-                cpumask_t this_sibling_map;
-                cpumask_t this_core_map;
-        };
-        cpumask_t send_covered;
-#ifdef CONFIG_NUMA
-        cpumask_t domainspan;
-        cpumask_t covered;
-        cpumask_t notcovered;
-#endif
-};
-#if     NR_CPUS > 128
-#define SCHED_CPUMASK_DECLARE(v)        struct allmasks *v
-static inline void sched_cpumask_alloc(struct allmasks **masks)
-{
-        *masks = kmalloc(sizeof(**masks), GFP_KERNEL);
-}
-static inline void sched_cpumask_free(struct allmasks *masks)
-{
-        kfree(masks);
-}
-#else
-#define SCHED_CPUMASK_DECLARE(v)        struct allmasks _v, *v = &_v
-static inline void sched_cpumask_alloc(struct allmasks **masks)
-{ }
-static inline void sched_cpumask_free(struct allmasks *masks)
-{ }
-#endif
-#define SCHED_CPUMASK_VAR(v, a)         cpumask_t *v = (cpumask_t *) \
-                        ((unsigned long)(a) + offsetof(struct allmasks, v))
 static int default_relax_domain_level = -1;
 static int __init setup_relax_domain_level(char *str)
@@ -7374,17 +7466,38 @@ static void set_domain_attribute(struct sched_domain *sd,
 * Build sched domains for a given set of cpus and attach the sched domains
 * to the individual cpus
 */
-static int __build_sched_domains(const cpumask_t *cpu_map,
+static int __build_sched_domains(const struct cpumask *cpu_map,
                                 struct sched_domain_attr *attr)
 {
-        int i;
+        int i, err = -ENOMEM;
        struct root_domain *rd;
-        SCHED_CPUMASK_DECLARE(allmasks);
+        cpumask_var_t nodemask, this_sibling_map, this_core_map, send_covered,
-        cpumask_t *tmpmask;
+                tmpmask;
 #ifdef CONFIG_NUMA
+        cpumask_var_t domainspan, covered, notcovered;
        struct sched_group **sched_group_nodes = NULL;
        int sd_allnodes = 0;
+        if (!alloc_cpumask_var(&domainspan, GFP_KERNEL))
+                goto out;
+        if (!alloc_cpumask_var(&covered, GFP_KERNEL))
+                goto free_domainspan;
+        if (!alloc_cpumask_var(&notcovered, GFP_KERNEL))
+                goto free_covered;
+#endif
+        if (!alloc_cpumask_var(&nodemask, GFP_KERNEL))
+                goto free_notcovered;
+        if (!alloc_cpumask_var(&this_sibling_map, GFP_KERNEL))
+                goto free_nodemask;
+        if (!alloc_cpumask_var(&this_core_map, GFP_KERNEL))
+                goto free_this_sibling_map;
+        if (!alloc_cpumask_var(&send_covered, GFP_KERNEL))
+                goto free_this_core_map;
+        if (!alloc_cpumask_var(&tmpmask, GFP_KERNEL))
+                goto free_send_covered;
+#ifdef CONFIG_NUMA
        /*
         * Allocate the per-node list of sched groups
         */
@@ -7392,54 +7505,37 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
                                    GFP_KERNEL);
        if (!sched_group_nodes) {
                printk(KERN_WARNING "Can not alloc sched group node list\n");
-                return -ENOMEM;
+                goto free_tmpmask;
        }
 #endif
        rd = alloc_rootdomain();
        if (!rd) {
                printk(KERN_WARNING "Cannot alloc root domain\n");
-#ifdef CONFIG_NUMA
+                goto free_sched_groups;
-                kfree(sched_group_nodes);
-#endif
-                return -ENOMEM;
        }
-        /* get space for all scratch cpumask variables */
-        sched_cpumask_alloc(&allmasks);
-        if (!allmasks) {
-                printk(KERN_WARNING "Cannot alloc cpumask array\n");
-                kfree(rd);
 #ifdef CONFIG_NUMA
-                kfree(sched_group_nodes);
+        sched_group_nodes_bycpu[cpumask_first(cpu_map)] = sched_group_nodes;
-#endif
-                return -ENOMEM;
-        }
-        tmpmask = (cpumask_t *)allmasks;
-#ifdef CONFIG_NUMA
-        sched_group_nodes_bycpu[first_cpu(*cpu_map)] = sched_group_nodes;
 #endif
        /*
         * Set up domains for cpus specified by the cpu_map.
         */
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
                struct sched_domain *sd = NULL, *p;
-                SCHED_CPUMASK_VAR(nodemask, allmasks);
+                /* FIXME: use cpumask_of_node */
                *nodemask = node_to_cpumask(cpu_to_node(i));
                cpus_and(*nodemask, *nodemask, *cpu_map);
 #ifdef CONFIG_NUMA
-                if (cpus_weight(*cpu_map) >
+                if (cpumask_weight(cpu_map) >
-                                SD_NODES_PER_DOMAIN*cpus_weight(*nodemask)) {
+                                SD_NODES_PER_DOMAIN*cpumask_weight(nodemask)) {
                        sd = &per_cpu(allnodes_domains, i);
                        SD_INIT(sd, ALLNODES);
                        set_domain_attribute(sd, attr);
-                        sd->span = *cpu_map;
+                        cpumask_copy(sched_domain_span(sd), cpu_map);
                        cpu_to_allnodes_group(i, cpu_map, &sd->groups, tmpmask);
                        p = sd;
                        sd_allnodes = 1;
@@ -7449,18 +7545,19 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
                sd = &per_cpu(node_domains, i);
                SD_INIT(sd, NODE);
                set_domain_attribute(sd, attr);
-                sched_domain_node_span(cpu_to_node(i), &sd->span);
+                sched_domain_node_span(cpu_to_node(i), sched_domain_span(sd));
                sd->parent = p;
                if (p)
                        p->child = sd;
-                cpus_and(sd->span, sd->span, *cpu_map);
+                cpumask_and(sched_domain_span(sd),
+                            sched_domain_span(sd), cpu_map);
 #endif
                p = sd;
-                sd = &per_cpu(phys_domains, i);
+                sd = &per_cpu(phys_domains, i).sd;
                SD_INIT(sd, CPU);
                set_domain_attribute(sd, attr);
-                sd->span = *nodemask;
+                cpumask_copy(sched_domain_span(sd), nodemask);
                sd->parent = p;
                if (p)
                        p->child = sd;
@@ -7468,11 +7565,12 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
 #ifdef CONFIG_SCHED_MC
                p = sd;
-                sd = &per_cpu(core_domains, i);
+                sd = &per_cpu(core_domains, i).sd;
                SD_INIT(sd, MC);
                set_domain_attribute(sd, attr);
-                sd->span = cpu_coregroup_map(i);
+                *sched_domain_span(sd) = cpu_coregroup_map(i);
-                cpus_and(sd->span, sd->span, *cpu_map);
+                cpumask_and(sched_domain_span(sd),
+                            sched_domain_span(sd), cpu_map);
                sd->parent = p;
                p->child = sd;
                cpu_to_core_group(i, cpu_map, &sd->groups, tmpmask);
@@ -7480,11 +7578,11 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
 #ifdef CONFIG_SCHED_SMT
                p = sd;
-                sd = &per_cpu(cpu_domains, i);
+                sd = &per_cpu(cpu_domains, i).sd;
                SD_INIT(sd, SIBLING);
                set_domain_attribute(sd, attr);
-                sd->span = per_cpu(cpu_sibling_map, i);
+                cpumask_and(sched_domain_span(sd),
-                cpus_and(sd->span, sd->span, *cpu_map);
+                            &per_cpu(cpu_sibling_map, i), cpu_map);
                sd->parent = p;
                p->child = sd;
                cpu_to_cpu_group(i, cpu_map, &sd->groups, tmpmask);
@@ -7493,13 +7591,10 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
 #ifdef CONFIG_SCHED_SMT
        /* Set up CPU (sibling) groups */
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
-                SCHED_CPUMASK_VAR(this_sibling_map, allmasks);
+                cpumask_and(this_sibling_map,
-                SCHED_CPUMASK_VAR(send_covered, allmasks);
+                            &per_cpu(cpu_sibling_map, i), cpu_map);
+                if (i != cpumask_first(this_sibling_map))
-                *this_sibling_map = per_cpu(cpu_sibling_map, i);
-                cpus_and(*this_sibling_map, *this_sibling_map, *cpu_map);
-                if (i != first_cpu(*this_sibling_map))
                        continue;
                init_sched_build_groups(this_sibling_map, cpu_map,
@@ -7510,13 +7605,11 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
 #ifdef CONFIG_SCHED_MC
        /* Set up multi-core groups */
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
-                SCHED_CPUMASK_VAR(this_core_map, allmasks);
+                /* FIXME: Use cpu_coregroup_mask */
-                SCHED_CPUMASK_VAR(send_covered, allmasks);
                *this_core_map = cpu_coregroup_map(i);
                cpus_and(*this_core_map, *this_core_map, *cpu_map);
-                if (i != first_cpu(*this_core_map))
+                if (i != cpumask_first(this_core_map))
                        continue;
                init_sched_build_groups(this_core_map, cpu_map,
@@ -7527,12 +7620,10 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
        /* Set up physical groups */
        for (i = 0; i < nr_node_ids; i++) {
-                SCHED_CPUMASK_VAR(nodemask, allmasks);
+                /* FIXME: Use cpumask_of_node */
-                SCHED_CPUMASK_VAR(send_covered, allmasks);
                *nodemask = node_to_cpumask(i);
                cpus_and(*nodemask, *nodemask, *cpu_map);
-                if (cpus_empty(*nodemask))
+                if (cpumask_empty(nodemask))
                        continue;
                init_sched_build_groups(nodemask, cpu_map,
@@ -7543,8 +7634,6 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
 #ifdef CONFIG_NUMA
        /* Set up node groups */
        if (sd_allnodes) {
-                SCHED_CPUMASK_VAR(send_covered, allmasks);
                init_sched_build_groups(cpu_map, cpu_map,
                                        &cpu_to_allnodes_group,
                                        send_covered, tmpmask);
@@ -7553,58 +7642,58 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
        for (i = 0; i < nr_node_ids; i++) {
                /* Set up node groups */
                struct sched_group *sg, *prev;
-                SCHED_CPUMASK_VAR(nodemask, allmasks);
-                SCHED_CPUMASK_VAR(domainspan, allmasks);
-                SCHED_CPUMASK_VAR(covered, allmasks);
                int j;
+                /* FIXME: Use cpumask_of_node */
                *nodemask = node_to_cpumask(i);
-                cpus_clear(*covered);
+                cpumask_clear(covered);
                cpus_and(*nodemask, *nodemask, *cpu_map);
-                if (cpus_empty(*nodemask)) {
+                if (cpumask_empty(nodemask)) {
                        sched_group_nodes[i] = NULL;
                        continue;
                }
                sched_domain_node_span(i, domainspan);
-                cpus_and(*domainspan, *domainspan, *cpu_map);
+                cpumask_and(domainspan, domainspan, cpu_map);
-                sg = kmalloc_node(sizeof(struct sched_group), GFP_KERNEL, i);
+                sg = kmalloc_node(sizeof(struct sched_group) + cpumask_size(),
+                                  GFP_KERNEL, i);
                if (!sg) {
                        printk(KERN_WARNING "Can not alloc domain group for "
                                "node %d\n", i);
                        goto error;
                }
                sched_group_nodes[i] = sg;
-                for_each_cpu_mask_nr(j, *nodemask) {
+                for_each_cpu(j, nodemask) {
                        struct sched_domain *sd;
                        sd = &per_cpu(node_domains, j);
                        sd->groups = sg;
                }
                sg->__cpu_power = 0;
-                sg->cpumask = *nodemask;
+                cpumask_copy(sched_group_cpus(sg), nodemask);
                sg->next = sg;
-                cpus_or(*covered, *covered, *nodemask);
+                cpumask_or(covered, covered, nodemask);
                prev = sg;
                for (j = 0; j < nr_node_ids; j++) {
-                        SCHED_CPUMASK_VAR(notcovered, allmasks);
                        int n = (i + j) % nr_node_ids;
+                        /* FIXME: Use cpumask_of_node */
                        node_to_cpumask_ptr(pnodemask, n);
-                        cpus_complement(*notcovered, *covered);
+                        cpumask_complement(notcovered, covered);
-                        cpus_and(*tmpmask, *notcovered, *cpu_map);
+                        cpumask_and(tmpmask, notcovered, cpu_map);
-                        cpus_and(*tmpmask, *tmpmask, *domainspan);
+                        cpumask_and(tmpmask, tmpmask, domainspan);
-                        if (cpus_empty(*tmpmask))
+                        if (cpumask_empty(tmpmask))
                                break;
-                        cpus_and(*tmpmask, *tmpmask, *pnodemask);
+                        cpumask_and(tmpmask, tmpmask, pnodemask);
-                        if (cpus_empty(*tmpmask))
+                        if (cpumask_empty(tmpmask))
                                continue;
-                        sg = kmalloc_node(sizeof(struct sched_group),
+                        sg = kmalloc_node(sizeof(struct sched_group) +
+                                          cpumask_size(),
                                          GFP_KERNEL, i);
                        if (!sg) {
                                printk(KERN_WARNING
@@ -7612,9 +7701,9 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
                                goto error;
                        }
                        sg->__cpu_power = 0;
-                        sg->cpumask = *tmpmask;
+                        cpumask_copy(sched_group_cpus(sg), tmpmask);
                        sg->next = prev->next;
-                        cpus_or(*covered, *covered, *tmpmask);
+                        cpumask_or(covered, covered, tmpmask);
                        prev->next = sg;
                        prev = sg;
                }
@@ -7623,22 +7712,22 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
        /* Calculate CPU power for physical packages and nodes */
 #ifdef CONFIG_SCHED_SMT
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
-                struct sched_domain *sd = &per_cpu(cpu_domains, i);
+                struct sched_domain *sd = &per_cpu(cpu_domains, i).sd;
                init_sched_groups_power(i, sd);
        }
 #endif
 #ifdef CONFIG_SCHED_MC
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
-                struct sched_domain *sd = &per_cpu(core_domains, i);
+                struct sched_domain *sd = &per_cpu(core_domains, i).sd;
                init_sched_groups_power(i, sd);
        }
 #endif
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
-                struct sched_domain *sd = &per_cpu(phys_domains, i);
+                struct sched_domain *sd = &per_cpu(phys_domains, i).sd;
                init_sched_groups_power(i, sd);
        }
@@ -7650,53 +7739,78 @@ static int __build_sched_domains(const cpumask_t *cpu_map,
        if (sd_allnodes) {
                struct sched_group *sg;
-                cpu_to_allnodes_group(first_cpu(*cpu_map), cpu_map, &sg,
+                cpu_to_allnodes_group(cpumask_first(cpu_map), cpu_map, &sg,
                                                                tmpmask);
                init_numa_sched_groups_power(sg);
        }
 #endif
        /* Attach the domains */
-        for_each_cpu_mask_nr(i, *cpu_map) {
+        for_each_cpu(i, cpu_map) {
                struct sched_domain *sd;
 #ifdef CONFIG_SCHED_SMT
-                sd = &per_cpu(cpu_domains, i);
+                sd = &per_cpu(cpu_domains, i).sd;
 #elif defined(CONFIG_SCHED_MC)
-                sd = &per_cpu(core_domains, i);
+                sd = &per_cpu(core_domains, i).sd;
 #else
-                sd = &per_cpu(phys_domains, i);
+                sd = &per_cpu(phys_domains, i).sd;
 #endif
                cpu_attach_domain(sd, rd, i);
        }
-        sched_cpumask_free(allmasks);
+        err = 0;
-        return 0;
+free_tmpmask:
+        free_cpumask_var(tmpmask);
+free_send_covered:
+        free_cpumask_var(send_covered);
+free_this_core_map:
+        free_cpumask_var(this_core_map);
+free_this_sibling_map:
+        free_cpumask_var(this_sibling_map);
+free_nodemask:
+        free_cpumask_var(nodemask);
+free_notcovered:
+#ifdef CONFIG_NUMA
+        free_cpumask_var(notcovered);
+free_covered:
+        free_cpumask_var(covered);
+free_domainspan:
+        free_cpumask_var(domainspan);
+out:
+#endif
+        return err;
+free_sched_groups:
+#ifdef CONFIG_NUMA
+        kfree(sched_group_nodes);
+#endif
+        goto free_tmpmask;
 #ifdef CONFIG_NUMA
 error:
        free_sched_groups(cpu_map, tmpmask);
-        sched_cpumask_free(allmasks);
+        free_rootdomain(rd);
-        kfree(rd);
+        goto free_tmpmask;
-        return -ENOMEM;
 #endif
 }
-static int build_sched_domains(const cpumask_t *cpu_map)
+static int build_sched_domains(const struct cpumask *cpu_map)
 {
        return __build_sched_domains(cpu_map, NULL);
 }
-static cpumask_t *doms_cur;     /* current sched domains */
+static struct cpumask *doms_cur;        /* current sched domains */
 static int ndoms_cur;           /* number of sched domains in 'doms_cur' */
 static struct sched_domain_attr *dattr_cur;
                                /* attribues of custom domains in 'doms_cur' */
 /*
 * Special case: If a kmalloc of a doms_cur partition (array of
- * cpumask_t) fails, then fallback to a single sched domain,
+ * cpumask) fails, then fallback to a single sched domain,
- * as determined by the single cpumask_t fallback_doms.
+ * as determined by the single cpumask fallback_doms.
 */
-static cpumask_t fallback_doms;
+static cpumask_var_t fallback_doms;
 /*
 * arch_update_cpu_topology lets virtualized architectures update the
@@ -7713,16 +7827,16 @@ int __attribute__((weak)) arch_update_cpu_topology(void)
 * For now this just excludes isolated cpus, but could be used to
 * exclude other special cases in the future.
 */
-static int arch_init_sched_domains(const cpumask_t *cpu_map)
+static int arch_init_sched_domains(const struct cpumask *cpu_map)
 {
        int err;
        arch_update_cpu_topology();
        ndoms_cur = 1;
-        doms_cur = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
+        doms_cur = kmalloc(cpumask_size(), GFP_KERNEL);
        if (!doms_cur)
-                doms_cur = &fallback_doms;
+                doms_cur = fallback_doms;
-        cpus_andnot(*doms_cur, *cpu_map, cpu_isolated_map);
+        cpumask_andnot(doms_cur, cpu_map, cpu_isolated_map);
        dattr_cur = NULL;
        err = build_sched_domains(doms_cur);
        register_sched_domain_sysctl();
@@ -7730,8 +7844,8 @@ static int arch_init_sched_domains(const cpumask_t *cpu_map)
        return err;
 }
-static void arch_destroy_sched_domains(const cpumask_t *cpu_map,
+static void arch_destroy_sched_domains(const struct cpumask *cpu_map,
-                                       cpumask_t *tmpmask)
+                                       struct cpumask *tmpmask)
 {
        free_sched_groups(cpu_map, tmpmask);
 }
@@ -7740,15 +7854,16 @@ static void arch_destroy_sched_domains(const cpumask_t *cpu_map,
 * Detach sched domains from a group of cpus specified in cpu_map
 * These cpus will now be attached to the NULL domain
 */
-static void detach_destroy_domains(const cpumask_t *cpu_map)
+static void detach_destroy_domains(const struct cpumask *cpu_map)
 {
-        cpumask_t tmpmask;
+        /* Save because hotplug lock held. */
+        static DECLARE_BITMAP(tmpmask, CONFIG_NR_CPUS);
        int i;
-        for_each_cpu_mask_nr(i, *cpu_map)
+        for_each_cpu(i, cpu_map)
                cpu_attach_domain(NULL, &def_root_domain, i);
        synchronize_sched();
-        arch_destroy_sched_domains(cpu_map, &tmpmask);
+        arch_destroy_sched_domains(cpu_map, to_cpumask(tmpmask));
 }
 /* handle null as "default" */
@@ -7773,7 +7888,7 @@ static int dattrs_equal(struct sched_domain_attr *cur, int idx_cur,
 * doms_new[] to the current sched domain partitioning, doms_cur[].
 * It destroys each deleted domain and builds each new domain.
 *
- * 'doms_new' is an array of cpumask_t's of length 'ndoms_new'.
+ * 'doms_new' is an array of cpumask's of length 'ndoms_new'.
 * The masks don't intersect (don't overlap.) We should setup one
 * sched domain for each mask. CPUs not in any of the cpumasks will
 * not be load balanced. If the same cpumask appears both in the
@@ -7787,13 +7902,14 @@ static int dattrs_equal(struct sched_domain_attr *cur, int idx_cur,
 * the single partition 'fallback_doms', it also forces the domains
 * to be rebuilt.
 *
- * If doms_new == NULL it will be replaced with cpu_online_map.
+ * If doms_new == NULL it will be replaced with cpu_online_mask.
 * ndoms_new == 0 is a special case for destroying existing domains,
 * and it will not create the default domain.
 *
 * Call with hotplug lock held
 */
-void partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
+/* FIXME: Change to struct cpumask *doms_new[] */
+void partition_sched_domains(int ndoms_new, struct cpumask *doms_new,
                             struct sched_domain_attr *dattr_new)
 {
        int i, j, n;
@@ -7812,7 +7928,7 @@ void partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
        /* Destroy deleted domains */
        for (i = 0; i < ndoms_cur; i++) {
                for (j = 0; j < n && !new_topology; j++) {
-                        if (cpus_equal(doms_cur[i], doms_new[j])
+                        if (cpumask_equal(&doms_cur[i], &doms_new[j])
                            && dattrs_equal(dattr_cur, i, dattr_new, j))
                                goto match1;
                }
@@ -7824,15 +7940,15 @@ match1:
        if (doms_new == NULL) {
                ndoms_cur = 0;
-                doms_new = &fallback_doms;
+                doms_new = fallback_doms;
-                cpus_andnot(doms_new[0], cpu_online_map, cpu_isolated_map);
+                cpumask_andnot(&doms_new[0], cpu_online_mask, cpu_isolated_map);
                WARN_ON_ONCE(dattr_new);
        }
        /* Build new domains */
        for (i = 0; i < ndoms_new; i++) {
                for (j = 0; j < ndoms_cur && !new_topology; j++) {
-                        if (cpus_equal(doms_new[i], doms_cur[j])
+                        if (cpumask_equal(&doms_new[i], &doms_cur[j])
                            && dattrs_equal(dattr_new, i, dattr_cur, j))
                                goto match2;
                }
@@ -7844,7 +7960,7 @@ match2:
        }
        /* Remember the new sched domains */
-        if (doms_cur != &fallback_doms)
+        if (doms_cur != fallback_doms)
                kfree(doms_cur);
        kfree(dattr_cur);       /* kfree(NULL) is safe */
        doms_cur = doms_new;
@@ -7873,14 +7989,25 @@ int arch_reinit_sched_domains(void)
 static ssize_t sched_power_savings_store(const char *buf, size_t count, int smt)
 {
        int ret;
+        unsigned int level = 0;
-        if (buf[0] != '0' && buf[0] != '1')
+        if (sscanf(buf, "%u", &level) != 1)
+                return -EINVAL;
+        /*
+         * level is always be positive so don't check for
+         * level < POWERSAVINGS_BALANCE_NONE which is 0
+         * What happens on 0 or 1 byte write,
+         * need to check for count as well?
+         */
+        if (level >= MAX_POWERSAVINGS_BALANCE_LEVELS)
                return -EINVAL;
        if (smt)
-                sched_smt_power_savings = (buf[0] == '1');
+                sched_smt_power_savings = level;
        else
-                sched_mc_power_savings = (buf[0] == '1');
+                sched_mc_power_savings = level;
        ret = arch_reinit_sched_domains();
@@ -7984,7 +8111,9 @@ static int update_runtime(struct notifier_block *nfb,
 void __init sched_init_smp(void)
 {
-        cpumask_t non_isolated_cpus;
+        cpumask_var_t non_isolated_cpus;
+        alloc_cpumask_var(&non_isolated_cpus, GFP_KERNEL);
 #if defined(CONFIG_NUMA)
        sched_group_nodes_bycpu = kzalloc(nr_cpu_ids * sizeof(void **),
@@ -7993,10 +8122,10 @@ void __init sched_init_smp(void)
 #endif
        get_online_cpus();
        mutex_lock(&sched_domains_mutex);
-        arch_init_sched_domains(&cpu_online_map);
+        arch_init_sched_domains(cpu_online_mask);
-        cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map);
+        cpumask_andnot(non_isolated_cpus, cpu_possible_mask, cpu_isolated_map);
-        if (cpus_empty(non_isolated_cpus))
+        if (cpumask_empty(non_isolated_cpus))
-                cpu_set(smp_processor_id(), non_isolated_cpus);
+                cpumask_set_cpu(smp_processor_id(), non_isolated_cpus);
        mutex_unlock(&sched_domains_mutex);
        put_online_cpus();
@@ -8011,9 +8140,13 @@ void __init sched_init_smp(void)
        init_hrtick();
        /* Move init over to a non-isolated CPU */
-        if (set_cpus_allowed_ptr(current, &non_isolated_cpus) < 0)
+        if (set_cpus_allowed_ptr(current, non_isolated_cpus) < 0)
                BUG();
        sched_init_granularity();
+        free_cpumask_var(non_isolated_cpus);
+        alloc_cpumask_var(&fallback_doms, GFP_KERNEL);
+        init_sched_rt_class();
 }
 #else
 void __init sched_init_smp(void)
@@ -8328,6 +8461,15 @@ void __init sched_init(void)
         */
        current->sched_class = &fair_sched_class;
+        /* Allocate the nohz_cpu_mask if CONFIG_CPUMASK_OFFSTACK */
+        alloc_bootmem_cpumask_var(&nohz_cpu_mask);
+#ifdef CONFIG_SMP
+#ifdef CONFIG_NO_HZ
+        alloc_bootmem_cpumask_var(&nohz.cpu_mask);
+#endif
+        alloc_bootmem_cpumask_var(&cpu_isolated_map);
+#endif /* SMP */
        scheduler_running = 1;
 }
diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index 52154fefab7e..018b7be1db2e 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -67,24 +67,21 @@ static int convert_prio(int prio)
 * Returns: (int)bool - CPUs were found
 */
 int cpupri_find(struct cpupri *cp, struct task_struct *p,
-                cpumask_t *lowest_mask)
+                struct cpumask *lowest_mask)
 {
        int                  idx      = 0;
        int                  task_pri = convert_prio(p->prio);
        for_each_cpupri_active(cp->pri_active, idx) {
                struct cpupri_vec *vec  = &cp->pri_to_cpu[idx];
-                cpumask_t mask;
                if (idx >= task_pri)
                        break;
-                cpus_and(mask, p->cpus_allowed, vec->mask);
+                if (cpumask_any_and(&p->cpus_allowed, vec->mask) >= nr_cpu_ids)
-                if (cpus_empty(mask))
                        continue;
-                *lowest_mask = mask;
+                cpumask_and(lowest_mask, &p->cpus_allowed, vec->mask);
                return 1;
        }
@@ -126,7 +123,7 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri)
                vec->count--;
                if (!vec->count)
                        clear_bit(oldpri, cp->pri_active);
-                cpu_clear(cpu, vec->mask);
+                cpumask_clear_cpu(cpu, vec->mask);
                spin_unlock_irqrestore(&vec->lock, flags);
        }
@@ -136,7 +133,7 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri)
                spin_lock_irqsave(&vec->lock, flags);
-                cpu_set(cpu, vec->mask);
+                cpumask_set_cpu(cpu, vec->mask);
                vec->count++;
                if (vec->count == 1)
                        set_bit(newpri, cp->pri_active);
@@ -150,10 +147,11 @@ void cpupri_set(struct cpupri *cp, int cpu, int newpri)
 /**
 * cpupri_init - initialize the cpupri structure
 * @cp: The cpupri context
+ * @bootmem: true if allocations need to use bootmem
 *
- * Returns: (void)
+ * Returns: -ENOMEM if memory fails.
 */
-void cpupri_init(struct cpupri *cp)
+int cpupri_init(struct cpupri *cp, bool bootmem)
 {
        int i;
@@ -164,11 +162,30 @@ void cpupri_init(struct cpupri *cp)
                spin_lock_init(&vec->lock);
                vec->count = 0;
-                cpus_clear(vec->mask);
+                if (bootmem)
+                        alloc_bootmem_cpumask_var(&vec->mask);
+                else if (!alloc_cpumask_var(&vec->mask, GFP_KERNEL))
+                        goto cleanup;
        }
        for_each_possible_cpu(i)
                cp->cpu_to_pri[i] = CPUPRI_INVALID;
+        return 0;
+cleanup:
+        for (i--; i >= 0; i--)
+                free_cpumask_var(cp->pri_to_cpu[i].mask);
+        return -ENOMEM;
 }
+/**
+ * cpupri_cleanup - clean up the cpupri structure
+ * @cp: The cpupri context
+ */
+void cpupri_cleanup(struct cpupri *cp)
+{
+        int i;
+        for (i = 0; i < CPUPRI_NR_PRIORITIES; i++)
+                free_cpumask_var(cp->pri_to_cpu[i].mask);
+}
diff --git a/kernel/sched_cpupri.h b/kernel/sched_cpupri.h
index f25811b0f931..642a94ef8a0a 100644
--- a/kernel/sched_cpupri.h
+++ b/kernel/sched_cpupri.h
@@ -14,7 +14,7 @@
 struct cpupri_vec {
        spinlock_t lock;
        int        count;
-        cpumask_t  mask;
+        cpumask_var_t mask;
 };
 struct cpupri {
@@ -27,7 +27,8 @@ struct cpupri {
 int  cpupri_find(struct cpupri *cp,
                 struct task_struct *p, cpumask_t *lowest_mask);
 void cpupri_set(struct cpupri *cp, int cpu, int pri);
-void cpupri_init(struct cpupri *cp);
+int cpupri_init(struct cpupri *cp, bool bootmem);
+void cpupri_cleanup(struct cpupri *cp);
 #else
 #define cpupri_set(cp, cpu, pri) do { } while (0)
 #define cpupri_init() do { } while (0)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 5ad4440f0fc4..56c0efe902a7 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1019,16 +1019,33 @@ static void yield_task_fair(struct rq *rq)
 * search starts with cpus closest then further out as needed,
 * so we always favor a closer, idle cpu.
 * Domains may include CPUs that are not usable for migration,
- * hence we need to mask them out (cpu_active_map)
+ * hence we need to mask them out (cpu_active_mask)
 *
 * Returns the CPU we should wake onto.
 */
 #if defined(ARCH_HAS_SCHED_WAKE_IDLE)
 static int wake_idle(int cpu, struct task_struct *p)
 {
-        cpumask_t tmp;
        struct sched_domain *sd;
        int i;
+        unsigned int chosen_wakeup_cpu;
+        int this_cpu;
+        /*
+         * At POWERSAVINGS_BALANCE_WAKEUP level, if both this_cpu and prev_cpu
+         * are idle and this is not a kernel thread and this task's affinity
+         * allows it to be moved to preferred cpu, then just move!
+         */
+        this_cpu = smp_processor_id();
+        chosen_wakeup_cpu =
+                cpu_rq(this_cpu)->rd->sched_mc_preferred_wakeup_cpu;
+        if (sched_mc_power_savings >= POWERSAVINGS_BALANCE_WAKEUP &&
+                idle_cpu(cpu) && idle_cpu(this_cpu) &&
+                p->mm && !(p->flags & PF_KTHREAD) &&
+                cpu_isset(chosen_wakeup_cpu, p->cpus_allowed))
+                return chosen_wakeup_cpu;
        /*
         * If it is idle, then it is the best cpu to run this task.
@@ -1046,10 +1063,9 @@ static int wake_idle(int cpu, struct task_struct *p)
                if ((sd->flags & SD_WAKE_IDLE)
                    || ((sd->flags & SD_WAKE_IDLE_FAR)
                        && !task_hot(p, task_rq(p)->clock, sd))) {
-                        cpus_and(tmp, sd->span, p->cpus_allowed);
+                        for_each_cpu_and(i, sched_domain_span(sd),
-                        cpus_and(tmp, tmp, cpu_active_map);
+                                         &p->cpus_allowed) {
-                        for_each_cpu_mask_nr(i, tmp) {
+                                if (cpu_active(i) && idle_cpu(i)) {
-                                if (idle_cpu(i)) {
                                        if (i != task_cpu(p)) {
                                                schedstat_inc(p,
                                                       se.nr_wakeups_idle);
@@ -1242,13 +1258,13 @@ static int select_task_rq_fair(struct task_struct *p, int sync)
         * this_cpu and prev_cpu are present in:
         */
        for_each_domain(this_cpu, sd) {
-                if (cpu_isset(prev_cpu, sd->span)) {
+                if (cpumask_test_cpu(prev_cpu, sched_domain_span(sd))) {
                        this_sd = sd;
                        break;
                }
        }
-        if (unlikely(!cpu_isset(this_cpu, p->cpus_allowed)))
+        if (unlikely(!cpumask_test_cpu(this_cpu, &p->cpus_allowed)))
                goto out;
        /*
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 51d2af3e6191..833b6d44483c 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -15,7 +15,7 @@ static inline void rt_set_overload(struct rq *rq)
        if (!rq->online)
                return;
-        cpu_set(rq->cpu, rq->rd->rto_mask);
+        cpumask_set_cpu(rq->cpu, rq->rd->rto_mask);
        /*
         * Make sure the mask is visible before we set
         * the overload count. That is checked to determine
@@ -34,7 +34,7 @@ static inline void rt_clear_overload(struct rq *rq)
        /* the order here really doesn't matter */
        atomic_dec(&rq->rd->rto_count);
-        cpu_clear(rq->cpu, rq->rd->rto_mask);
+        cpumask_clear_cpu(rq->cpu, rq->rd->rto_mask);
 }
 static void update_rt_migration(struct rq *rq)
@@ -139,14 +139,14 @@ static int rt_se_boosted(struct sched_rt_entity *rt_se)
 }
 #ifdef CONFIG_SMP
-static inline cpumask_t sched_rt_period_mask(void)
+static inline const struct cpumask *sched_rt_period_mask(void)
 {
        return cpu_rq(smp_processor_id())->rd->span;
 }
 #else
-static inline cpumask_t sched_rt_period_mask(void)
+static inline const struct cpumask *sched_rt_period_mask(void)
 {
-        return cpu_online_map;
+        return cpu_online_mask;
 }
 #endif
@@ -212,9 +212,9 @@ static inline int rt_rq_throttled(struct rt_rq *rt_rq)
        return rt_rq->rt_throttled;
 }
-static inline cpumask_t sched_rt_period_mask(void)
+static inline const struct cpumask *sched_rt_period_mask(void)
 {
-        return cpu_online_map;
+        return cpu_online_mask;
 }
 static inline
@@ -241,11 +241,11 @@ static int do_balance_runtime(struct rt_rq *rt_rq)
        int i, weight, more = 0;
        u64 rt_period;
-        weight = cpus_weight(rd->span);
+        weight = cpumask_weight(rd->span);
        spin_lock(&rt_b->rt_runtime_lock);
        rt_period = ktime_to_ns(rt_b->rt_period);
-        for_each_cpu_mask_nr(i, rd->span) {
+        for_each_cpu(i, rd->span) {
                struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);
                s64 diff;
@@ -324,7 +324,7 @@ static void __disable_runtime(struct rq *rq)
                /*
                 * Greedy reclaim, take back as much as we can.
                 */
-                for_each_cpu_mask(i, rd->span) {
+                for_each_cpu(i, rd->span) {
                        struct rt_rq *iter = sched_rt_period_rt_rq(rt_b, i);
                        s64 diff;
@@ -429,13 +429,13 @@ static inline int balance_runtime(struct rt_rq *rt_rq)
 static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
 {
        int i, idle = 1;
-        cpumask_t span;
+        const struct cpumask *span;
        if (!rt_bandwidth_enabled() || rt_b->rt_runtime == RUNTIME_INF)
                return 1;
        span = sched_rt_period_mask();
-        for_each_cpu_mask(i, span) {
+        for_each_cpu(i, span) {
                int enqueue = 0;
                struct rt_rq *rt_rq = sched_rt_period_rt_rq(rt_b, i);
                struct rq *rq = rq_of_rt_rq(rt_rq);
@@ -805,17 +805,20 @@ static int select_task_rq_rt(struct task_struct *p, int sync)
 static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p)
 {
-        cpumask_t mask;
+        cpumask_var_t mask;
        if (rq->curr->rt.nr_cpus_allowed == 1)
                return;
-        if (p->rt.nr_cpus_allowed != 1
+        if (!alloc_cpumask_var(&mask, GFP_ATOMIC))
-            && cpupri_find(&rq->rd->cpupri, p, &mask))
                return;
-        if (!cpupri_find(&rq->rd->cpupri, rq->curr, &mask))
+        if (p->rt.nr_cpus_allowed != 1
-                return;
+            && cpupri_find(&rq->rd->cpupri, p, mask))
+                goto free;
+        if (!cpupri_find(&rq->rd->cpupri, rq->curr, mask))
+                goto free;
        /*
         * There appears to be other cpus that can accept
@@ -824,6 +827,8 @@ static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p)
         */
        requeue_task_rt(rq, p, 1);
        resched_task(rq->curr);
+free:
+        free_cpumask_var(mask);
 }
 #endif /* CONFIG_SMP */
@@ -914,7 +919,7 @@ static void deactivate_task(struct rq *rq, struct task_struct *p, int sleep);
 static int pick_rt_task(struct rq *rq, struct task_struct *p, int cpu)
 {
        if (!task_running(rq, p) &&
-            (cpu < 0 || cpu_isset(cpu, p->cpus_allowed)) &&
+            (cpu < 0 || cpumask_test_cpu(cpu, &p->cpus_allowed)) &&
            (p->rt.nr_cpus_allowed > 1))
                return 1;
        return 0;
@@ -953,7 +958,7 @@ static struct task_struct *pick_next_highest_task_rt(struct rq *rq, int cpu)
        return next;
 }
-static DEFINE_PER_CPU(cpumask_t, local_cpu_mask);
+static DEFINE_PER_CPU(cpumask_var_t, local_cpu_mask);
 static inline int pick_optimal_cpu(int this_cpu, cpumask_t *mask)
 {
@@ -973,7 +978,7 @@ static inline int pick_optimal_cpu(int this_cpu, cpumask_t *mask)
 static int find_lowest_rq(struct task_struct *task)
 {
        struct sched_domain *sd;
-        cpumask_t *lowest_mask = &__get_cpu_var(local_cpu_mask);
+        struct cpumask *lowest_mask = __get_cpu_var(local_cpu_mask);
        int this_cpu = smp_processor_id();
        int cpu      = task_cpu(task);
@@ -988,7 +993,7 @@ static int find_lowest_rq(struct task_struct *task)
         * I guess we might want to change cpupri_find() to ignore those
         * in the first place.
         */
-        cpus_and(*lowest_mask, *lowest_mask, cpu_active_map);
+        cpumask_and(lowest_mask, lowest_mask, cpu_active_mask);
        /*
         * At this point we have built a mask of cpus representing the
@@ -998,7 +1003,7 @@ static int find_lowest_rq(struct task_struct *task)
         * We prioritize the last cpu that the task executed on since
         * it is most likely cache-hot in that location.
         */
-        if (cpu_isset(cpu, *lowest_mask))
+        if (cpumask_test_cpu(cpu, lowest_mask))
                return cpu;
        /*
@@ -1013,7 +1018,8 @@ static int find_lowest_rq(struct task_struct *task)
                        cpumask_t domain_mask;
                        int       best_cpu;
-                        cpus_and(domain_mask, sd->span, *lowest_mask);
+                        cpumask_and(&domain_mask, sched_domain_span(sd),
+                                    lowest_mask);
                        best_cpu = pick_optimal_cpu(this_cpu,
                                                    &domain_mask);
@@ -1054,8 +1060,8 @@ static struct rq *find_lock_lowest_rq(struct task_struct *task, struct rq *rq)
                         * Also make sure that it wasn't scheduled on its rq.
                         */
                        if (unlikely(task_rq(task) != rq ||
-                                     !cpu_isset(lowest_rq->cpu,
+                                     !cpumask_test_cpu(lowest_rq->cpu,
-                                                task->cpus_allowed) ||
+                                                       &task->cpus_allowed) ||
                                     task_running(rq, task) ||
                                     !task->se.on_rq)) {
@@ -1176,7 +1182,7 @@ static int pull_rt_task(struct rq *this_rq)
        next = pick_next_task_rt(this_rq);
-        for_each_cpu_mask_nr(cpu, this_rq->rd->rto_mask) {
+        for_each_cpu(cpu, this_rq->rd->rto_mask) {
                if (this_cpu == cpu)
                        continue;
@@ -1305,9 +1311,9 @@ move_one_task_rt(struct rq *this_rq, int this_cpu, struct rq *busiest,
 }
 static void set_cpus_allowed_rt(struct task_struct *p,
-                                const cpumask_t *new_mask)
+                                const struct cpumask *new_mask)
 {
-        int weight = cpus_weight(*new_mask);
+        int weight = cpumask_weight(new_mask);
        BUG_ON(!rt_task(p));
@@ -1328,7 +1334,7 @@ static void set_cpus_allowed_rt(struct task_struct *p,
                update_rt_migration(rq);
        }
-        p->cpus_allowed    = *new_mask;
+        cpumask_copy(&p->cpus_allowed, new_mask);
        p->rt.nr_cpus_allowed = weight;
 }
@@ -1371,6 +1377,14 @@ static void switched_from_rt(struct rq *rq, struct task_struct *p,
        if (!rq->rt.rt_nr_running)
                pull_rt_task(rq);
 }
+static inline void init_sched_rt_class(void)
+{
+        unsigned int i;
+        for_each_possible_cpu(i)
+                alloc_cpumask_var(&per_cpu(local_cpu_mask, i), GFP_KERNEL);
+}
 #endif /* CONFIG_SMP */
 /*
@@ -1541,3 +1555,4 @@ static void print_rt_stats(struct seq_file *m, int cpu)
        rcu_read_unlock();
 }
 #endif /* CONFIG_SCHED_DEBUG */
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 3b01098164c8..f2773b5d1226 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -42,7 +42,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
                for_each_domain(cpu, sd) {
                        enum cpu_idle_type itype;
-                        cpumask_scnprintf(mask_str, mask_len, sd->span);
+                        cpumask_scnprintf(mask_str, mask_len,
+                                          sched_domain_span(sd));
                        seq_printf(seq, "domain%d %s", dcount++, mask_str);
                        for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
                                        itype++) {
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index bd6be76303cf..6d7dc4ec4aa5 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -352,7 +352,7 @@ static int parse(struct nlattr *na, cpumask_t *mask)
        if (!data)
                return -ENOMEM;
        nla_strlcpy(data, na, len);
-        ret = cpulist_parse(data, *mask);
+        ret = cpulist_parse(data, mask);
        kfree(data);
        return ret;
 }
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index f8d968063cea..ea2f48af83cf 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -166,6 +166,8 @@ static void clockevents_notify_released(void)
 void clockevents_register_device(struct clock_event_device *dev)
 {
        BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
+        BUG_ON(!dev->cpumask);
        /*
         * A nsec2cyc multiplicator of 0 is invalid and we'd crash
         * on it, so fix it up and emit a warning:
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index f98a1b7b16e9..9590af2327be 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -150,7 +150,7 @@ static void tick_do_broadcast(cpumask_t mask)
                 */
                cpu = first_cpu(mask);
                td = &per_cpu(tick_cpu_device, cpu);
-                td->evtdev->broadcast(mask);
+                td->evtdev->broadcast(&mask);
        }
 }
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index df12434b43ca..f8372be74122 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -136,7 +136,7 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast)
 */
 static void tick_setup_device(struct tick_device *td,
                              struct clock_event_device *newdev, int cpu,
-                              const cpumask_t *cpumask)
+                              const struct cpumask *cpumask)
 {
        ktime_t next_event;
        void (*handler)(struct clock_event_device *) = NULL;
@@ -171,8 +171,8 @@ static void tick_setup_device(struct tick_device *td,
         * When the device is not per cpu, pin the interrupt to the
         * current cpu:
         */
-        if (!cpus_equal(newdev->cpumask, *cpumask))
+        if (!cpumask_equal(newdev->cpumask, cpumask))
-                irq_set_affinity(newdev->irq, *cpumask);
+                irq_set_affinity(newdev->irq, cpumask);
        /*
         * When global broadcasting is active, check if the current
@@ -202,14 +202,14 @@ static int tick_check_new_device(struct clock_event_device *newdev)
        spin_lock_irqsave(&tick_device_lock, flags);
        cpu = smp_processor_id();
-        if (!cpu_isset(cpu, newdev->cpumask))
+        if (!cpumask_test_cpu(cpu, newdev->cpumask))
                goto out_bc;
        td = &per_cpu(tick_cpu_device, cpu);
        curdev = td->evtdev;
        /* cpu local device ? */
-        if (!cpus_equal(newdev->cpumask, cpumask_of_cpu(cpu))) {
+        if (!cpumask_equal(newdev->cpumask, cpumask_of(cpu))) {
                /*
                 * If the cpu affinity of the device interrupt can not
@@ -222,7 +222,7 @@ static int tick_check_new_device(struct clock_event_device *newdev)
                 * If we have a cpu local device already, do not replace it
                 * by a non cpu local device
                 */
-                if (curdev && cpus_equal(curdev->cpumask, cpumask_of_cpu(cpu)))
+                if (curdev && cpumask_equal(curdev->cpumask, cpumask_of(cpu)))
                        goto out_bc;
        }
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 8f3fc2582d38..76a574bbef97 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -144,7 +144,7 @@ void tick_nohz_update_jiffies(void)
        if (!ts->tick_stopped)
                return;
-        cpu_clear(cpu, nohz_cpu_mask);
+        cpumask_clear_cpu(cpu, nohz_cpu_mask);
        now = ktime_get();
        ts->idle_waketime = now;
@@ -301,7 +301,7 @@ void tick_nohz_stop_sched_tick(int inidle)
                        tick_do_timer_cpu = TICK_DO_TIMER_NONE;
                if (delta_jiffies > 1)
-                        cpu_set(cpu, nohz_cpu_mask);
+                        cpumask_set_cpu(cpu, nohz_cpu_mask);
                /* Skip reprogram of event if its not changed */
                if (ts->tick_stopped && ktime_equal(expires, dev->next_event))
@@ -319,7 +319,7 @@ void tick_nohz_stop_sched_tick(int inidle)
                                /*
                                 * sched tick not stopped!
                                 */
-                                cpu_clear(cpu, nohz_cpu_mask);
+                                cpumask_clear_cpu(cpu, nohz_cpu_mask);
                                goto out;
                        }
@@ -361,7 +361,7 @@ void tick_nohz_stop_sched_tick(int inidle)
                 * softirq.
                 */
                tick_do_update_jiffies64(ktime_get());
-                cpu_clear(cpu, nohz_cpu_mask);
+                cpumask_clear_cpu(cpu, nohz_cpu_mask);
        }
        raise_softirq_irqoff(TIMER_SOFTIRQ);
 out:
@@ -439,7 +439,7 @@ void tick_nohz_restart_sched_tick(void)
        select_nohz_load_balancer(0);
        now = ktime_get();
        tick_do_update_jiffies64(now);
-        cpu_clear(cpu, nohz_cpu_mask);
+        cpumask_clear_cpu(cpu, nohz_cpu_mask);
        /*
         * We stopped the tick in idle. Update process times would miss the
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4185d5221633..0e91f43b6baf 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2674,7 +2674,7 @@ tracing_cpumask_read(struct file *filp, char __user *ubuf,
        mutex_lock(&tracing_cpumask_update_lock);
-        len = cpumask_scnprintf(mask_str, count, tracing_cpumask);
+        len = cpumask_scnprintf(mask_str, count, &tracing_cpumask);
        if (count - len < 2) {
                count = -EINVAL;
                goto out_err;
@@ -2695,7 +2695,7 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
        int err, cpu;
        mutex_lock(&tracing_cpumask_update_lock);
-        err = cpumask_parse_user(ubuf, count, tracing_cpumask_new);
+        err = cpumask_parse_user(ubuf, count, &tracing_cpumask_new);
        if (err)
                goto err_unlock;
diff --git a/lib/Kconfig b/lib/Kconfig
index fd4118e097f0..2ba43c4a5b07 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -159,4 +159,11 @@ config CHECK_SIGNATURE
 config HAVE_LMB
        boolean
+config CPUMASK_OFFSTACK
+        bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
+        help
+          Use dynamic allocation for cpumask_var_t, instead of putting
+          them on the stack.  This is a bit more expensive, but avoids
+          stack overflow.
 endmenu
diff --git a/mm/slub.c b/mm/slub.c
index 6cb7ad107852..0d861c3154b6 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3642,7 +3642,7 @@ static int list_locations(struct kmem_cache *s, char *buf,
                                len < PAGE_SIZE - 60) {
                        len += sprintf(buf + len, " cpus=");
                        len += cpulist_scnprintf(buf + len, PAGE_SIZE - len - 50,
-                                        l->cpus);
+                                        &l->cpus);
                }
                if (num_online_nodes() > 1 && !nodes_empty(l->nodes) &&