Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/travis/linux-2.6-cpus4096-for-ingo into cpus4096

19 files changed, 62 insertions, 34 deletions

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 703731accda6..7bc7489223f3 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -55,7 +55,7 @@ int irq_select_affinity(unsigned int irq)
                 cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
         last_cpu = cpu;
 
-        irq_desc[irq].affinity = cpumask_of_cpu(cpu);
+        cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
         irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
         return 0;
 }
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 7141cee1fab7..4bb723eadad1 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -104,6 +104,11 @@ static struct irq_desc bad_irq_desc = {
         .lock = SPIN_LOCK_UNLOCKED
 };
 
+#ifdef CONFIG_CPUMASK_OFFSTACK
+/* We are not allocating bad_irq_desc.affinity or .pending_mask */
+#error "ARM architecture does not support CONFIG_CPUMASK_OFFSTACK."
+#endif
+
 /*
  * do_IRQ handles all hardware IRQ's.  Decoded IRQs should not
  * come via this function.  Instead, they should provide their
@@ -161,7 +166,7 @@ void __init init_IRQ(void)
                 irq_desc[irq].status |= IRQ_NOREQUEST | IRQ_NOPROBE;
 
 #ifdef CONFIG_SMP
-        bad_irq_desc.affinity = CPU_MASK_ALL;
+        cpumask_setall(bad_irq_desc.affinity);
         bad_irq_desc.cpu = smp_processor_id();
 #endif
         init_arch_irq();
@@ -191,15 +196,16 @@ void migrate_irqs(void)
                 struct irq_desc *desc = irq_desc + i;
 
                 if (desc->cpu == cpu) {
-                        unsigned int newcpu = any_online_cpu(desc->affinity);
-
-                        if (newcpu == NR_CPUS) {
+                        unsigned int newcpu = cpumask_any_and(desc->affinity,
+                                                              cpu_online_mask);
+                        if (newcpu >= nr_cpu_ids) {
                                 if (printk_ratelimit())
                                         printk(KERN_INFO "IRQ%u no longer affine to CPU%u\n",
                                                i, cpu);
 
-                                cpus_setall(desc->affinity);
-                                newcpu = any_online_cpu(desc->affinity);
+                                cpumask_setall(desc->affinity);
+                                newcpu = cpumask_any_and(desc->affinity,
+                                                         cpu_online_mask);
                         }
 
                         route_irq(desc, i, newcpu);
diff --git a/arch/arm/oprofile/op_model_mpcore.c b/arch/arm/oprofile/op_model_mpcore.c
index 6d6bd5899240..853d42bb8682 100644
--- a/arch/arm/oprofile/op_model_mpcore.c
+++ b/arch/arm/oprofile/op_model_mpcore.c
@@ -263,7 +263,7 @@ static void em_route_irq(int irq, unsigned int cpu)
         const struct cpumask *mask = cpumask_of(cpu);
 
         spin_lock_irq(&desc->lock);
-        desc->affinity = *mask;
+        cpumask_copy(desc->affinity, mask);
         desc->chip->set_affinity(irq, mask);
         spin_unlock_irq(&desc->lock);
 }
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index ab8209cbbad0..5780d6df1542 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -69,6 +69,11 @@ static struct irq_desc bad_irq_desc = {
 #endif
 };
 
+#ifdef CONFIG_CPUMASK_OFFSTACK
+/* We are not allocating a variable-sized bad_irq_desc.affinity */
+#error "Blackfin architecture does not support CONFIG_CPUMASK_OFFSTACK."
+#endif
+
 int show_interrupts(struct seq_file *p, void *v)
 {
         int i = *(loff_t *) v, j;
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 5cfd3d91001a..006ad366a454 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -880,7 +880,7 @@ iosapic_unregister_intr (unsigned int gsi)
         if (iosapic_intr_info[irq].count == 0) {
 #ifdef CONFIG_SMP
                 /* Clear affinity */
-                cpus_setall(idesc->affinity);
+                cpumask_setall(idesc->affinity);
 #endif
                 /* Clear the interrupt information */
                 iosapic_intr_info[irq].dest = 0;
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index a58f64ca9f0e..226233a6fa19 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -103,7 +103,7 @@ static char irq_redir [NR_IRQS]; // = { [0 ... NR_IRQS-1] = 1 };
 void set_irq_affinity_info (unsigned int irq, int hwid, int redir)
 {
         if (irq < NR_IRQS) {
-                cpumask_copy(&irq_desc[irq].affinity,
+                cpumask_copy(irq_desc[irq].affinity,
                              cpumask_of(cpu_logical_id(hwid)));
                 irq_redir[irq] = (char) (redir & 0xff);
         }
@@ -148,7 +148,7 @@ static void migrate_irqs(void)
                 if (desc->status == IRQ_PER_CPU)
                         continue;
 
-                if (cpumask_any_and(&irq_desc[irq].affinity, cpu_online_mask)
+                if (cpumask_any_and(irq_desc[irq].affinity, cpu_online_mask)
                     >= nr_cpu_ids) {
                         /*
                          * Save it for phase 2 processing
diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c
index 890339339035..dcb6b7c51ea7 100644
--- a/arch/ia64/kernel/msi_ia64.c
+++ b/arch/ia64/kernel/msi_ia64.c
@@ -75,7 +75,7 @@ static void ia64_set_msi_irq_affinity(unsigned int irq,
         msg.data = data;
 
         write_msi_msg(irq, &msg);
-        irq_desc[irq].affinity = cpumask_of_cpu(cpu);
+        cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
 }
 #endif /* CONFIG_SMP */
 
@@ -187,7 +187,7 @@ static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
         msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
 
         dmar_msi_write(irq, &msg);
-        irq_desc[irq].affinity = *mask;
+        cpumask_copy(irq_desc[irq].affinity, mask);
 }
 #endif /* CONFIG_SMP */
 
diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c
index ca553b0429ce..81e428943d73 100644
--- a/arch/ia64/sn/kernel/msi_sn.c
+++ b/arch/ia64/sn/kernel/msi_sn.c
@@ -205,7 +205,7 @@ static void sn_set_msi_irq_affinity(unsigned int irq,
         msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff);
 
         write_msi_msg(irq, &msg);
-        irq_desc[irq].affinity = *cpu_mask;
+        cpumask_copy(irq_desc[irq].affinity, cpu_mask);
 }
 #endif /* CONFIG_SMP */
 
diff --git a/arch/mips/include/asm/irq.h b/arch/mips/include/asm/irq.h
index abc62aa744ac..3214ade02d10 100644
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -66,7 +66,7 @@ extern void smtc_forward_irq(unsigned int irq);
  */
 #define IRQ_AFFINITY_HOOK(irq)                                          \
 do {                                                                    \
-    if (!cpu_isset(smp_processor_id(), irq_desc[irq].affinity)) {       \
+    if (!cpumask_test_cpu(smp_processor_id(), irq_desc[irq].affinity)) {\
         smtc_forward_irq(irq);                                          \
         irq_exit();                                                     \
         return;                                                         \
diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c
index 494a49a317e9..87deb8f6c458 100644
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -187,7 +187,7 @@ static void gic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
                 set_bit(irq, pcpu_masks[first_cpu(tmp)].pcpu_mask);
 
         }
-        irq_desc[irq].affinity = *cpumask;
+        cpumask_copy(irq_desc[irq].affinity, cpumask);
         spin_unlock_irqrestore(&gic_lock, flags);
 
 }
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index b6cca01ff82b..d2c1ab12425a 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -686,7 +686,7 @@ void smtc_forward_irq(unsigned int irq)
          * and efficiency, we just pick the easiest one to find.
          */
 
-        target = first_cpu(irq_desc[irq].affinity);
+        target = cpumask_first(irq_desc[irq].affinity);
 
         /*
          * We depend on the platform code to have correctly processed
diff --git a/arch/mips/mti-malta/malta-smtc.c b/arch/mips/mti-malta/malta-smtc.c
index aabd7274507b..5ba31888fefb 100644
--- a/arch/mips/mti-malta/malta-smtc.c
+++ b/arch/mips/mti-malta/malta-smtc.c
@@ -116,7 +116,7 @@ struct plat_smp_ops msmtc_smp_ops = {
 
 void plat_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
 {
-        cpumask_t tmask = *affinity;
+        cpumask_t tmask;
         int cpu = 0;
         void smtc_set_irq_affinity(unsigned int irq, cpumask_t aff);
 
@@ -139,11 +139,12 @@ void plat_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
          * be made to forward to an offline "CPU".
          */
 
+        cpumask_copy(&tmask, affinity);
         for_each_cpu(cpu, affinity) {
                 if ((cpu_data[cpu].vpe_id != 0) || !cpu_online(cpu))
                         cpu_clear(cpu, tmask);
         }
-        irq_desc[irq].affinity = tmask;
+        cpumask_copy(irq_desc[irq].affinity, &tmask);
 
         if (cpus_empty(tmask))
                 /*
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index ac2c822928c7..49482806863f 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -120,7 +120,7 @@ int cpu_check_affinity(unsigned int irq, cpumask_t *dest)
         if (CHECK_IRQ_PER_CPU(irq)) {
                 /* Bad linux design decision.  The mask has already
                  * been set; we must reset it */
-                irq_desc[irq].affinity = CPU_MASK_ALL;
+                cpumask_setall(irq_desc[irq].affinity);
                 return -EINVAL;
         }
 
@@ -136,7 +136,7 @@ static void cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
         if (cpu_check_affinity(irq, dest))
                 return;
 
-        irq_desc[irq].affinity = *dest;
+        cpumask_copy(irq_desc[irq].affinity, dest);
 }
 #endif
 
@@ -295,7 +295,7 @@ int txn_alloc_irq(unsigned int bits_wide)
 unsigned long txn_affinity_addr(unsigned int irq, int cpu)
 {
 #ifdef CONFIG_SMP
-        irq_desc[irq].affinity = cpumask_of_cpu(cpu);
+        cpumask_copy(irq_desc[irq].affinity, cpumask_of(cpu));
 #endif
 
         return per_cpu(cpu_data, cpu).txn_addr;
@@ -352,7 +352,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
         irq = eirr_to_irq(eirr_val);
 
 #ifdef CONFIG_SMP
-        dest = irq_desc[irq].affinity;
+        cpumask_copy(&dest, irq_desc[irq].affinity);
         if (CHECK_IRQ_PER_CPU(irq_desc[irq].status) &&
             !cpu_isset(smp_processor_id(), dest)) {
                 int cpu = first_cpu(dest);
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 23b8b5e36f98..ad1e5ac721d8 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -231,7 +231,7 @@ void fixup_irqs(cpumask_t map)
                 if (irq_desc[irq].status & IRQ_PER_CPU)
                         continue;
 
-                cpus_and(mask, irq_desc[irq].affinity, map);
+                cpumask_and(&mask, irq_desc[irq].affinity, &map);
                 if (any_online_cpu(mask) == NR_CPUS) {
                         printk("Breaking affinity for irq %i\n", irq);
                         mask = map;
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 84e058f1e1cc..80b513449f4c 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -153,9 +153,10 @@ static int get_irq_server(unsigned int virq, unsigned int strict_check)
 {
         int server;
         /* For the moment only implement delivery to all cpus or one cpu */
-        cpumask_t cpumask = irq_desc[virq].affinity;
+        cpumask_t cpumask;
         cpumask_t tmp = CPU_MASK_NONE;
 
+        cpumask_copy(&cpumask, irq_desc[virq].affinity);
         if (!distribute_irqs)
                 return default_server;
 
@@ -869,7 +870,7 @@ void xics_migrate_irqs_away(void)
                        virq, cpu);
 
                 /* Reset affinity to all cpus */
-                irq_desc[virq].affinity = CPU_MASK_ALL;
+                cpumask_setall(irq_desc[virq].affinity);
                 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 3e0d89dcdba2..0afd21f9a222 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -566,9 +566,10 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic)
 #ifdef CONFIG_SMP
 static int irq_choose_cpu(unsigned int virt_irq)
 {
-        cpumask_t mask = irq_desc[virt_irq].affinity;
+        cpumask_t mask;
         int cpuid;
 
+        cpumask_copy(&mask, irq_desc[virt_irq].affinity);
         if (cpus_equal(mask, CPU_MASK_ALL)) {
                 static int irq_rover;
                 static DEFINE_SPINLOCK(irq_rover_lock);
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index cab8e0286871..4ac5c651e00d 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -247,9 +247,10 @@ struct irq_handler_data {
 #ifdef CONFIG_SMP
 static int irq_choose_cpu(unsigned int virt_irq)
 {
-        cpumask_t mask = irq_desc[virt_irq].affinity;
+        cpumask_t mask;
         int cpuid;
 
+        cpumask_copy(&mask, irq_desc[virt_irq].affinity);
         if (cpus_equal(mask, CPU_MASK_ALL)) {
                 static int irq_rover;
                 static DEFINE_SPINLOCK(irq_rover_lock);
@@ -854,7 +855,7 @@ 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/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h
index 602361ad0e74..a16a2ab2b429 100644
--- a/arch/x86/include/asm/irq_vectors.h
+++ b/arch/x86/include/asm/irq_vectors.h
@@ -115,14 +115,11 @@
 # endif
 #else
 
-/* defined as a macro so nr_irqs = max_nr_irqs(nr_cpu_ids) can be used */
-# define max_nr_irqs(nr_cpus)                           \
-        ((8 * nr_cpus) > (32 * MAX_IO_APICS) ?          \
+# define NR_IRQS                                        \
+        ((8 * NR_CPUS) > (32 * MAX_IO_APICS) ?          \
                 (NR_VECTORS + (8 * NR_CPUS)) :          \
                 (NR_VECTORS + (32 * MAX_IO_APICS)))     \
 
-# define NR_IRQS max_nr_irqs(NR_CPUS)
-
 #endif
 
 #elif defined(CONFIG_X86_VOYAGER)
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index ae80638012de..157986916cd1 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -3850,6 +3850,22 @@ void __init probe_nr_irqs_gsi(void)
                 nr_irqs_gsi = nr;
 }
 
+#ifdef CONFIG_SPARSE_IRQ
+int __init arch_probe_nr_irqs(void)
+{
+        int nr;
+
+        nr = ((8 * nr_cpu_ids) > (32 * nr_ioapics) ?
+                (NR_VECTORS + (8 * nr_cpu_ids)) :
+                (NR_VECTORS + (32 * nr_ioapics)));
+
+        if (nr < nr_irqs && nr > nr_irqs_gsi)
+                nr_irqs = nr;
+
+        return 0;
+}
+#endif
+
 /* --------------------------------------------------------------------------
                           ACPI-based IOAPIC Configuration
    -------------------------------------------------------------------------- */