13 files changed, 68 insertions, 50 deletions

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 098ec84b8c00..f2870920f246 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -431,6 +431,12 @@ static void __cpuinit setup_APIC_timer(void)
 {
         struct clock_event_device *levt = &__get_cpu_var(lapic_events);
 
+        if (cpu_has(&current_cpu_data, X86_FEATURE_ARAT)) {
+                lapic_clockevent.features &= ~CLOCK_EVT_FEAT_C3STOP;
+                /* Make LAPIC timer preferrable over percpu HPET */
+                lapic_clockevent.rating = 150;
+        }
+
         memcpy(levt, &lapic_clockevent, sizeof(*levt));
         levt->cpumask = cpumask_of(smp_processor_id());
 
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 0014714ea97b..306e5e88fb6f 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -212,7 +212,7 @@ struct apic apic_flat =  {
         .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
         .wait_for_init_deassert         = NULL,
         .smp_callin_clear_local_apic    = NULL,
-        .inquire_remote_apic            = NULL,
+        .inquire_remote_apic            = default_inquire_remote_apic,
 
         .read                           = native_apic_mem_read,
         .write                          = native_apic_mem_write,
@@ -362,7 +362,7 @@ struct apic apic_physflat =  {
         .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
         .wait_for_init_deassert         = NULL,
         .smp_callin_clear_local_apic    = NULL,
-        .inquire_remote_apic            = NULL,
+        .inquire_remote_apic            = default_inquire_remote_apic,
 
         .read                           = native_apic_mem_read,
         .write                          = native_apic_mem_write,
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 767fe7e46d68..a2789e42e162 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2524,7 +2524,6 @@ static void irq_complete_move(struct irq_desc **descp)
 static inline void irq_complete_move(struct irq_desc **descp) {}
 #endif
 
-#ifdef CONFIG_X86_X2APIC
 static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
 {
         int apic, pin;
@@ -2558,6 +2557,7 @@ eoi_ioapic_irq(struct irq_desc *desc)
         spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
+#ifdef CONFIG_X86_X2APIC
 static void ack_x2apic_level(unsigned int irq)
 {
         struct irq_desc *desc = irq_to_desc(irq);
@@ -2634,6 +2634,9 @@ static void ack_apic_level(unsigned int irq)
          */
         ack_APIC_irq();
 
+        if (irq_remapped(irq))
+                eoi_ioapic_irq(desc);
+
         /* Now we can move and renable the irq */
         if (unlikely(do_unmask_irq)) {
                 /* Only migrate the irq if the ack has been received.
diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index 8220ae69849d..c965e5212714 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -31,6 +31,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
 
         static const struct cpuid_bit __cpuinitconst cpuid_bits[] = {
                 { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
+                { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 },
                 { 0, 0, 0, 0 }
         };
 
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
index 46e29ab96c6a..46e29ab96c6a 100755..100644
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ b/arch/x86/kernel/cpu/cpu_debug.c
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 19f6b9d27e83..3e3cd3db7a0c 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -68,6 +68,7 @@ struct acpi_cpufreq_data {
         unsigned int max_freq;
         unsigned int resume;
         unsigned int cpu_feature;
+        u64 saved_aperf, saved_mperf;
 };
 
 static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
@@ -152,7 +153,8 @@ struct drv_cmd {
         u32 val;
 };
 
-static long do_drv_read(void *_cmd)
+/* Called via smp_call_function_single(), on the target CPU */
+static void do_drv_read(void *_cmd)
 {
         struct drv_cmd *cmd = _cmd;
         u32 h;
@@ -169,10 +171,10 @@ static long do_drv_read(void *_cmd)
         default:
                 break;
         }
-        return 0;
 }
 
-static long do_drv_write(void *_cmd)
+/* Called via smp_call_function_many(), on the target CPUs */
+static void do_drv_write(void *_cmd)
 {
         struct drv_cmd *cmd = _cmd;
         u32 lo, hi;
@@ -191,23 +193,18 @@ static long do_drv_write(void *_cmd)
         default:
                 break;
         }
-        return 0;
 }
 
 static void drv_read(struct drv_cmd *cmd)
 {
         cmd->val = 0;
 
-        work_on_cpu(cpumask_any(cmd->mask), do_drv_read, cmd);
+        smp_call_function_single(cpumask_any(cmd->mask), do_drv_read, cmd, 1);
 }
 
 static void drv_write(struct drv_cmd *cmd)
 {
-        unsigned int i;
-
-        for_each_cpu(i, cmd->mask) {
-                work_on_cpu(i, do_drv_write, cmd);
-        }
+        smp_call_function_many(cmd->mask, do_drv_write, cmd, 1);
 }
 
 static u32 get_cur_val(const struct cpumask *mask)
@@ -241,28 +238,23 @@ static u32 get_cur_val(const struct cpumask *mask)
         return cmd.val;
 }
 
-struct perf_cur {
+struct perf_pair {
         union {
                 struct {
                         u32 lo;
                         u32 hi;
                 } split;
                 u64 whole;
-        } aperf_cur, mperf_cur;
+        } aperf, mperf;
 };
 
-
-static long read_measured_perf_ctrs(void *_cur)
+/* Called via smp_call_function_single(), on the target CPU */
+static void read_measured_perf_ctrs(void *_cur)
 {
-        struct perf_cur *cur = _cur;
-
-        rdmsr(MSR_IA32_APERF, cur->aperf_cur.split.lo, cur->aperf_cur.split.hi);
-        rdmsr(MSR_IA32_MPERF, cur->mperf_cur.split.lo, cur->mperf_cur.split.hi);
-
-        wrmsr(MSR_IA32_APERF, 0, 0);
-        wrmsr(MSR_IA32_MPERF, 0, 0);
+        struct perf_pair *cur = _cur;
 
-        return 0;
+        rdmsr(MSR_IA32_APERF, cur->aperf.split.lo, cur->aperf.split.hi);
+        rdmsr(MSR_IA32_MPERF, cur->mperf.split.lo, cur->mperf.split.hi);
 }
 
 /*
@@ -281,52 +273,57 @@ static long read_measured_perf_ctrs(void *_cur)
 static unsigned int get_measured_perf(struct cpufreq_policy *policy,
                                       unsigned int cpu)
 {
-        struct perf_cur cur;
+        struct perf_pair readin, cur;
         unsigned int perf_percent;
         unsigned int retval;
 
-        if (!work_on_cpu(cpu, read_measured_perf_ctrs, &cur))
+        if (smp_call_function_single(cpu, read_measured_perf_ctrs, &cur, 1))
                 return 0;
 
+        cur.aperf.whole = readin.aperf.whole -
+                                per_cpu(drv_data, cpu)->saved_aperf;
+        cur.mperf.whole = readin.mperf.whole -
+                                per_cpu(drv_data, cpu)->saved_mperf;
+        per_cpu(drv_data, cpu)->saved_aperf = readin.aperf.whole;
+        per_cpu(drv_data, cpu)->saved_mperf = readin.mperf.whole;
+
 #ifdef __i386__
         /*
          * We dont want to do 64 bit divide with 32 bit kernel
          * Get an approximate value. Return failure in case we cannot get
          * an approximate value.
          */
-        if (unlikely(cur.aperf_cur.split.hi || cur.mperf_cur.split.hi)) {
+        if (unlikely(cur.aperf.split.hi || cur.mperf.split.hi)) {
                 int shift_count;
                 u32 h;
 
-                h = max_t(u32, cur.aperf_cur.split.hi, cur.mperf_cur.split.hi);
+                h = max_t(u32, cur.aperf.split.hi, cur.mperf.split.hi);
                 shift_count = fls(h);
 
-                cur.aperf_cur.whole >>= shift_count;
-                cur.mperf_cur.whole >>= shift_count;
+                cur.aperf.whole >>= shift_count;
+                cur.mperf.whole >>= shift_count;
         }
 
-        if (((unsigned long)(-1) / 100) < cur.aperf_cur.split.lo) {
+        if (((unsigned long)(-1) / 100) < cur.aperf.split.lo) {
                 int shift_count = 7;
-                cur.aperf_cur.split.lo >>= shift_count;
-                cur.mperf_cur.split.lo >>= shift_count;
+                cur.aperf.split.lo >>= shift_count;
+                cur.mperf.split.lo >>= shift_count;
         }
 
-        if (cur.aperf_cur.split.lo && cur.mperf_cur.split.lo)
-                perf_percent = (cur.aperf_cur.split.lo * 100) /
-                                cur.mperf_cur.split.lo;
+        if (cur.aperf.split.lo && cur.mperf.split.lo)
+                perf_percent = (cur.aperf.split.lo * 100) / cur.mperf.split.lo;
         else
                 perf_percent = 0;
 
 #else
-        if (unlikely(((unsigned long)(-1) / 100) < cur.aperf_cur.whole)) {
+        if (unlikely(((unsigned long)(-1) / 100) < cur.aperf.whole)) {
                 int shift_count = 7;
-                cur.aperf_cur.whole >>= shift_count;
-                cur.mperf_cur.whole >>= shift_count;
+                cur.aperf.whole >>= shift_count;
+                cur.mperf.whole >>= shift_count;
         }
 
-        if (cur.aperf_cur.whole && cur.mperf_cur.whole)
-                perf_percent = (cur.aperf_cur.whole * 100) /
-                                cur.mperf_cur.whole;
+        if (cur.aperf.whole && cur.mperf.whole)
+                perf_percent = (cur.aperf.whole * 100) / cur.mperf.whole;
         else
                 perf_percent = 0;
 
diff --git a/arch/x86/kernel/cpu/cpufreq/longhaul.c b/arch/x86/kernel/cpu/cpufreq/longhaul.c
index 0bd48e65a0ca..ce2ed3e4aad9 100644
--- a/arch/x86/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/x86/kernel/cpu/cpufreq/longhaul.c
@@ -33,7 +33,6 @@
 #include <linux/timex.h>
 #include <linux/io.h>
 #include <linux/acpi.h>
-#include <linux/kernel.h>
 
 #include <asm/msr.h>
 #include <acpi/processor.h>
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 70a10ca100f6..18dfa30795c9 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -18,6 +18,8 @@
 #include <linux/init.h>
 #include <linux/list.h>
 
+#include <trace/syscall.h>
+
 #include <asm/cacheflush.h>
 #include <asm/ftrace.h>
 #include <asm/nops.h>
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 3aaf7b9e3a8b..c3fe010d74c8 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -65,7 +65,7 @@ static int show_other_interrupts(struct seq_file *p, int prec)
         seq_printf(p, "  Spurious interrupts\n");
 #endif
         if (generic_interrupt_extension) {
-                seq_printf(p, "PLT: ");
+                seq_printf(p, "%*s: ", prec, "PLT");
                 for_each_online_cpu(j)
                         seq_printf(p, "%10u ", irq_stats(j)->generic_irqs);
                 seq_printf(p, "  Platform interrupts\n");
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index dce99dca6cf8..70fd7e414c15 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -679,7 +679,7 @@ void __init get_smp_config(void)
         __get_smp_config(0);
 }
 
-static void smp_reserve_bootmem(struct mpf_intel *mpf)
+static void __init smp_reserve_bootmem(struct mpf_intel *mpf)
 {
         unsigned long size = get_mpc_size(mpf->physptr);
 #ifdef CONFIG_X86_32
@@ -838,7 +838,7 @@ static int  __init get_MP_intsrc_index(struct mpc_intsrc *m)
 
 static struct mpc_intsrc __initdata *m_spare[SPARE_SLOT_NUM];
 
-static void check_irq_src(struct mpc_intsrc *m, int *nr_m_spare)
+static void __init check_irq_src(struct mpc_intsrc *m, int *nr_m_spare)
 {
         int i;
 
@@ -866,7 +866,8 @@ static void check_irq_src(struct mpc_intsrc *m, int *nr_m_spare)
         }
 }
 #else /* CONFIG_X86_IO_APIC */
-static inline void check_irq_src(struct mpc_intsrc *m, int *nr_m_spare) {}
+static
+inline void __init check_irq_src(struct mpc_intsrc *m, int *nr_m_spare) {}
 #endif /* CONFIG_X86_IO_APIC */
 
 static int check_slot(unsigned long mpc_new_phys, unsigned long mpc_new_length,
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index fe9345c967de..23b7c8f017e2 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -21,7 +21,6 @@
 #include <linux/audit.h>
 #include <linux/seccomp.h>
 #include <linux/signal.h>
-#include <linux/ftrace.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -35,6 +34,8 @@
 #include <asm/proto.h>
 #include <asm/ds.h>
 
+#include <trace/syscall.h>
+
 #include "tls.h"
 
 enum x86_regset {
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 2aef36d8aca2..1340dad417f4 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -224,6 +224,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "Dell XPS710"),
                 },
         },
+        {       /* Handle problems with rebooting on Dell DXP061 */
+                .callback = set_bios_reboot,
+                .ident = "Dell DXP061",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Dell DXP061"),
+                },
+        },
         { }
 };
 
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index 2b54fe002e94..0a5b04aa98f1 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -324,7 +324,7 @@ void __ref xsave_cntxt_init(void)
         }
 
         /*
-         * for now OS knows only about FP/SSE
+         * Support only the state known to OS.
          */
         pcntxt_mask = pcntxt_mask & XCNTXT_MASK;
         xsave_init();