Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent

13 files changed, 142 insertions, 124 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 0ee9a3254eec..4868e4a951ee 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1095,7 +1095,7 @@ static void clear_all_debug_regs(void)
 
 void __cpuinit cpu_init(void)
 {
-        struct orig_ist *orig_ist;
+        struct orig_ist *oist;
         struct task_struct *me;
         struct tss_struct *t;
         unsigned long v;
@@ -1104,7 +1104,7 @@ void __cpuinit cpu_init(void)
 
         cpu = stack_smp_processor_id();
         t = &per_cpu(init_tss, cpu);
-        orig_ist = &per_cpu(orig_ist, cpu);
+        oist = &per_cpu(orig_ist, cpu);
 
 #ifdef CONFIG_NUMA
         if (cpu != 0 && percpu_read(node_number) == 0 &&
@@ -1145,12 +1145,12 @@ void __cpuinit cpu_init(void)
         /*
          * set up and load the per-CPU TSS
          */
-        if (!orig_ist->ist[0]) {
+        if (!oist->ist[0]) {
                 char *estacks = per_cpu(exception_stacks, cpu);
 
                 for (v = 0; v < N_EXCEPTION_STACKS; v++) {
                         estacks += exception_stack_sizes[v];
-                        orig_ist->ist[v] = t->x86_tss.ist[v] =
+                        oist->ist[v] = t->x86_tss.ist[v] =
                                         (unsigned long)estacks;
                 }
         }
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
index dca325c03999..b368cd862997 100644
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ b/arch/x86/kernel/cpu/cpu_debug.c
@@ -30,9 +30,9 @@
 #include <asm/apic.h>
 #include <asm/desc.h>
 
-static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpu_arr);
-static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], priv_arr);
-static DEFINE_PER_CPU(int, cpu_priv_count);
+static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpud_arr);
+static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], cpud_priv_arr);
+static DEFINE_PER_CPU(int, cpud_priv_count);
 
 static DEFINE_MUTEX(cpu_debug_lock);
 
@@ -531,7 +531,7 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
 
         /* Already intialized */
         if (file == CPU_INDEX_BIT)
-                if (per_cpu(cpu_arr[type].init, cpu))
+                if (per_cpu(cpud_arr[type].init, cpu))
                         return 0;
 
         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -543,8 +543,8 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
         priv->reg = reg;
         priv->file = file;
         mutex_lock(&cpu_debug_lock);
-        per_cpu(priv_arr[type], cpu) = priv;
-        per_cpu(cpu_priv_count, cpu)++;
+        per_cpu(cpud_priv_arr[type], cpu) = priv;
+        per_cpu(cpud_priv_count, cpu)++;
         mutex_unlock(&cpu_debug_lock);
 
         if (file)
@@ -552,10 +552,10 @@ static int cpu_create_file(unsigned cpu, unsigned type, unsigned reg,
                                     dentry, (void *)priv, &cpu_fops);
         else {
                 debugfs_create_file(cpu_base[type].name, S_IRUGO,
-                                    per_cpu(cpu_arr[type].dentry, cpu),
+                                    per_cpu(cpud_arr[type].dentry, cpu),
                                     (void *)priv, &cpu_fops);
                 mutex_lock(&cpu_debug_lock);
-                per_cpu(cpu_arr[type].init, cpu) = 1;
+                per_cpu(cpud_arr[type].init, cpu) = 1;
                 mutex_unlock(&cpu_debug_lock);
         }
 
@@ -615,7 +615,7 @@ static int cpu_init_allreg(unsigned cpu, struct dentry *dentry)
                 if (!is_typeflag_valid(cpu, cpu_base[type].flag))
                         continue;
                 cpu_dentry = debugfs_create_dir(cpu_base[type].name, dentry);
-                per_cpu(cpu_arr[type].dentry, cpu) = cpu_dentry;
+                per_cpu(cpud_arr[type].dentry, cpu) = cpu_dentry;
 
                 if (type < CPU_TSS_BIT)
                         err = cpu_init_msr(cpu, type, cpu_dentry);
@@ -647,11 +647,11 @@ static int cpu_init_cpu(void)
                 err = cpu_init_allreg(cpu, cpu_dentry);
 
                 pr_info("cpu%d(%d) debug files %d\n",
-                        cpu, nr_cpu_ids, per_cpu(cpu_priv_count, cpu));
-                if (per_cpu(cpu_priv_count, cpu) > MAX_CPU_FILES) {
+                        cpu, nr_cpu_ids, per_cpu(cpud_priv_count, cpu));
+                if (per_cpu(cpud_priv_count, cpu) > MAX_CPU_FILES) {
                         pr_err("Register files count %d exceeds limit %d\n",
-                                per_cpu(cpu_priv_count, cpu), MAX_CPU_FILES);
-                        per_cpu(cpu_priv_count, cpu) = MAX_CPU_FILES;
+                                per_cpu(cpud_priv_count, cpu), MAX_CPU_FILES);
+                        per_cpu(cpud_priv_count, cpu) = MAX_CPU_FILES;
                         err = -ENFILE;
                 }
                 if (err)
@@ -676,8 +676,8 @@ static void __exit cpu_debug_exit(void)
                 debugfs_remove_recursive(cpu_debugfs_dir);
 
         for (cpu = 0; cpu <  nr_cpu_ids; cpu++)
-                for (i = 0; i < per_cpu(cpu_priv_count, cpu); i++)
-                        kfree(per_cpu(priv_arr[i], cpu));
+                for (i = 0; i < per_cpu(cpud_priv_count, cpu); i++)
+                        kfree(per_cpu(cpud_priv_arr[i], cpu));
 }
 
 module_init(cpu_debug_init);
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 8b581d3905cb..f28decf8dde3 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -68,9 +68,9 @@ struct acpi_cpufreq_data {
         unsigned int cpu_feature;
 };
 
-static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
+static DEFINE_PER_CPU(struct acpi_cpufreq_data *, acfreq_data);
 
-static DEFINE_PER_CPU(struct aperfmperf, old_perf);
+static DEFINE_PER_CPU(struct aperfmperf, acfreq_old_perf);
 
 /* acpi_perf_data is a pointer to percpu data. */
 static struct acpi_processor_performance *acpi_perf_data;
@@ -214,14 +214,14 @@ static u32 get_cur_val(const struct cpumask *mask)
         if (unlikely(cpumask_empty(mask)))
                 return 0;
 
-        switch (per_cpu(drv_data, cpumask_first(mask))->cpu_feature) {
+        switch (per_cpu(acfreq_data, cpumask_first(mask))->cpu_feature) {
         case SYSTEM_INTEL_MSR_CAPABLE:
                 cmd.type = SYSTEM_INTEL_MSR_CAPABLE;
                 cmd.addr.msr.reg = MSR_IA32_PERF_STATUS;
                 break;
         case SYSTEM_IO_CAPABLE:
                 cmd.type = SYSTEM_IO_CAPABLE;
-                perf = per_cpu(drv_data, cpumask_first(mask))->acpi_data;
+                perf = per_cpu(acfreq_data, cpumask_first(mask))->acpi_data;
                 cmd.addr.io.port = perf->control_register.address;
                 cmd.addr.io.bit_width = perf->control_register.bit_width;
                 break;
@@ -268,8 +268,8 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
         if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
                 return 0;
 
-        ratio = calc_aperfmperf_ratio(&per_cpu(old_perf, cpu), &perf);
-        per_cpu(old_perf, cpu) = perf;
+        ratio = calc_aperfmperf_ratio(&per_cpu(acfreq_old_perf, cpu), &perf);
+        per_cpu(acfreq_old_perf, cpu) = perf;
 
         retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
 
@@ -278,7 +278,7 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
 
 static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
 {
-        struct acpi_cpufreq_data *data = per_cpu(drv_data, cpu);
+        struct acpi_cpufreq_data *data = per_cpu(acfreq_data, cpu);
         unsigned int freq;
         unsigned int cached_freq;
 
@@ -322,7 +322,7 @@ static unsigned int check_freqs(const struct cpumask *mask, unsigned int freq,
 static int acpi_cpufreq_target(struct cpufreq_policy *policy,
                                unsigned int target_freq, unsigned int relation)
 {
-        struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
+        struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
         struct acpi_processor_performance *perf;
         struct cpufreq_freqs freqs;
         struct drv_cmd cmd;
@@ -416,7 +416,7 @@ out:
 
 static int acpi_cpufreq_verify(struct cpufreq_policy *policy)
 {
-        struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
+        struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
 
         dprintk("acpi_cpufreq_verify\n");
 
@@ -574,7 +574,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
                 return -ENOMEM;
 
         data->acpi_data = per_cpu_ptr(acpi_perf_data, cpu);
-        per_cpu(drv_data, cpu) = data;
+        per_cpu(acfreq_data, cpu) = data;
 
         if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
                 acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
@@ -725,20 +725,20 @@ err_unreg:
         acpi_processor_unregister_performance(perf, cpu);
 err_free:
         kfree(data);
-        per_cpu(drv_data, cpu) = NULL;
+        per_cpu(acfreq_data, cpu) = NULL;
 
         return result;
 }
 
 static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 {
-        struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
+        struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
 
         dprintk("acpi_cpufreq_cpu_exit\n");
 
         if (data) {
                 cpufreq_frequency_table_put_attr(policy->cpu);
-                per_cpu(drv_data, policy->cpu) = NULL;
+                per_cpu(acfreq_data, policy->cpu) = NULL;
                 acpi_processor_unregister_performance(data->acpi_data,
                                                       policy->cpu);
                 kfree(data);
@@ -749,7 +749,7 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 
 static int acpi_cpufreq_resume(struct cpufreq_policy *policy)
 {
-        struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
+        struct acpi_cpufreq_data *data = per_cpu(acfreq_data, policy->cpu);
 
         dprintk("acpi_cpufreq_resume\n");
 
@@ -764,14 +764,15 @@ static struct freq_attr *acpi_cpufreq_attr[] = {
 };
 
 static struct cpufreq_driver acpi_cpufreq_driver = {
-        .verify = acpi_cpufreq_verify,
-        .target = acpi_cpufreq_target,
-        .init = acpi_cpufreq_cpu_init,
-        .exit = acpi_cpufreq_cpu_exit,
-        .resume = acpi_cpufreq_resume,
-        .name = "acpi-cpufreq",
-        .owner = THIS_MODULE,
-        .attr = acpi_cpufreq_attr,
+        .verify         = acpi_cpufreq_verify,
+        .target         = acpi_cpufreq_target,
+        .bios_limit     = acpi_processor_get_bios_limit,
+        .init           = acpi_cpufreq_cpu_init,
+        .exit           = acpi_cpufreq_cpu_exit,
+        .resume         = acpi_cpufreq_resume,
+        .name           = "acpi-cpufreq",
+        .owner          = THIS_MODULE,
+        .attr           = acpi_cpufreq_attr,
 };
 
 static int __init acpi_cpufreq_init(void)
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
index f10dea409f40..cb01dac267d3 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k6.c
@@ -164,7 +164,7 @@ static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
         }
 
         /* cpuinfo and default policy values */
-        policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+        policy->cpuinfo.transition_latency = 200000;
         policy->cur = busfreq * max_multiplier;
 
         result = cpufreq_frequency_table_cpuinfo(policy, clock_ratio);
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
index d47c775eb0ab..9a97116f89e5 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k7.c
@@ -714,14 +714,17 @@ static struct freq_attr *powernow_table_attr[] = {
 };
 
 static struct cpufreq_driver powernow_driver = {
-        .verify = powernow_verify,
-        .target = powernow_target,
-        .get    = powernow_get,
-        .init   = powernow_cpu_init,
-        .exit   = powernow_cpu_exit,
-        .name   = "powernow-k7",
-        .owner  = THIS_MODULE,
-        .attr   = powernow_table_attr,
+        .verify         = powernow_verify,
+        .target         = powernow_target,
+        .get            = powernow_get,
+#ifdef CONFIG_X86_POWERNOW_K7_ACPI
+        .bios_limit     = acpi_processor_get_bios_limit,
+#endif
+        .init           = powernow_cpu_init,
+        .exit           = powernow_cpu_exit,
+        .name           = "powernow-k7",
+        .owner          = THIS_MODULE,
+        .attr           = powernow_table_attr,
 };
 
 static int __init powernow_init(void)
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 3f12dabeab52..f125e5c551c0 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1118,7 +1118,7 @@ static int transition_frequency_pstate(struct powernow_k8_data *data,
 static int powernowk8_target(struct cpufreq_policy *pol,
                 unsigned targfreq, unsigned relation)
 {
-        cpumask_t oldmask;
+        cpumask_var_t oldmask;
         struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
         u32 checkfid;
         u32 checkvid;
@@ -1131,9 +1131,13 @@ static int powernowk8_target(struct cpufreq_policy *pol,
         checkfid = data->currfid;
         checkvid = data->currvid;
 
-        /* only run on specific CPU from here on */
-        oldmask = current->cpus_allowed;
-        set_cpus_allowed_ptr(current, &cpumask_of_cpu(pol->cpu));
+        /* only run on specific CPU from here on. */
+        /* This is poor form: use a workqueue or smp_call_function_single */
+        if (!alloc_cpumask_var(&oldmask, GFP_KERNEL))
+                return -ENOMEM;
+
+        cpumask_copy(oldmask, tsk_cpus_allowed(current));
+        set_cpus_allowed_ptr(current, cpumask_of(pol->cpu));
 
         if (smp_processor_id() != pol->cpu) {
                 printk(KERN_ERR PFX "limiting to cpu %u failed\n", pol->cpu);
@@ -1193,7 +1197,8 @@ static int powernowk8_target(struct cpufreq_policy *pol,
         ret = 0;
 
 err_out:
-        set_cpus_allowed_ptr(current, &oldmask);
+        set_cpus_allowed_ptr(current, oldmask);
+        free_cpumask_var(oldmask);
         return ret;
 }
 
@@ -1393,14 +1398,15 @@ static struct freq_attr *powernow_k8_attr[] = {
 };
 
 static struct cpufreq_driver cpufreq_amd64_driver = {
-        .verify = powernowk8_verify,
-        .target = powernowk8_target,
-        .init = powernowk8_cpu_init,
-        .exit = __devexit_p(powernowk8_cpu_exit),
-        .get = powernowk8_get,
-        .name = "powernow-k8",
-        .owner = THIS_MODULE,
-        .attr = powernow_k8_attr,
+        .verify         = powernowk8_verify,
+        .target         = powernowk8_target,
+        .bios_limit     = acpi_processor_get_bios_limit,
+        .init           = powernowk8_cpu_init,
+        .exit           = __devexit_p(powernowk8_cpu_exit),
+        .get            = powernowk8_get,
+        .name           = "powernow-k8",
+        .owner          = THIS_MODULE,
+        .attr           = powernow_k8_attr,
 };
 
 /* driver entry point for init */
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
index 3ae5a7a3a500..2ce8e0b5cc54 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-ich.c
@@ -39,7 +39,7 @@ static struct pci_dev *speedstep_chipset_dev;
 
 /* speedstep_processor
  */
-static unsigned int speedstep_processor;
+static enum speedstep_processor speedstep_processor;
 
 static u32 pmbase;
 
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index f4c290b8482f..ad0083abfa23 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -34,7 +34,7 @@ static int relaxed_check;
  *                   GET PROCESSOR CORE SPEED IN KHZ                 *
  *********************************************************************/
 
-static unsigned int pentium3_get_frequency(unsigned int processor)
+static unsigned int pentium3_get_frequency(enum speedstep_processor processor)
 {
         /* See table 14 of p3_ds.pdf and table 22 of 29834003.pdf */
         struct {
@@ -227,7 +227,7 @@ static unsigned int pentium4_get_frequency(void)
 
 
 /* Warning: may get called from smp_call_function_single. */
-unsigned int speedstep_get_frequency(unsigned int processor)
+unsigned int speedstep_get_frequency(enum speedstep_processor processor)
 {
         switch (processor) {
         case SPEEDSTEP_CPU_PCORE:
@@ -380,7 +380,7 @@ EXPORT_SYMBOL_GPL(speedstep_detect_processor);
  *                     DETECT SPEEDSTEP SPEEDS                       *
  *********************************************************************/
 
-unsigned int speedstep_get_freqs(unsigned int processor,
+unsigned int speedstep_get_freqs(enum speedstep_processor processor,
                                   unsigned int *low_speed,
                                   unsigned int *high_speed,
                                   unsigned int *transition_latency,
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.h b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
index 2b6c04e5a304..70d9cea1219d 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.h
@@ -11,18 +11,18 @@
 
 
 /* processors */
-
-#define SPEEDSTEP_CPU_PIII_C_EARLY      0x00000001  /* Coppermine core */
-#define SPEEDSTEP_CPU_PIII_C            0x00000002  /* Coppermine core */
-#define SPEEDSTEP_CPU_PIII_T            0x00000003  /* Tualatin core */
-#define SPEEDSTEP_CPU_P4M               0x00000004  /* P4-M  */
-
+enum speedstep_processor {
+        SPEEDSTEP_CPU_PIII_C_EARLY = 0x00000001,  /* Coppermine core */
+        SPEEDSTEP_CPU_PIII_C       = 0x00000002,  /* Coppermine core */
+        SPEEDSTEP_CPU_PIII_T       = 0x00000003,  /* Tualatin core */
+        SPEEDSTEP_CPU_P4M          = 0x00000004,  /* P4-M  */
 /* the following processors are not speedstep-capable and are not auto-detected
  * in speedstep_detect_processor(). However, their speed can be detected using
  * the speedstep_get_frequency() call. */
-#define SPEEDSTEP_CPU_PM                0xFFFFFF03  /* Pentium M  */
-#define SPEEDSTEP_CPU_P4D               0xFFFFFF04  /* desktop P4  */
-#define SPEEDSTEP_CPU_PCORE             0xFFFFFF05  /* Core */
+        SPEEDSTEP_CPU_PM           = 0xFFFFFF03,  /* Pentium M  */
+        SPEEDSTEP_CPU_P4D          = 0xFFFFFF04,  /* desktop P4  */
+        SPEEDSTEP_CPU_PCORE        = 0xFFFFFF05,  /* Core */
+};
 
 /* speedstep states -- only two of them */
 
@@ -31,10 +31,10 @@
 
 
 /* detect a speedstep-capable processor */
-extern unsigned int speedstep_detect_processor (void);
+extern enum speedstep_processor speedstep_detect_processor(void);
 
 /* detect the current speed (in khz) of the processor */
-extern unsigned int speedstep_get_frequency(unsigned int processor);
+extern unsigned int speedstep_get_frequency(enum speedstep_processor processor);
 
 
 /* detect the low and high speeds of the processor. The callback
@@ -42,7 +42,7 @@ extern unsigned int speedstep_get_frequency(unsigned int processor);
  * SPEEDSTEP_LOW; the second argument is zero so that no
  * cpufreq_notify_transition calls are initiated.
  */
-extern unsigned int speedstep_get_freqs(unsigned int processor,
+extern unsigned int speedstep_get_freqs(enum speedstep_processor processor,
         unsigned int *low_speed,
         unsigned int *high_speed,
         unsigned int *transition_latency,
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c b/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
index befea088e4f5..04d73c114e49 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-smi.c
@@ -35,7 +35,7 @@ static int smi_cmd;
 static unsigned int smi_sig;
 
 /* info about the processor */
-static unsigned int speedstep_processor;
+static enum speedstep_processor speedstep_processor;
 
 /*
  * There are only two frequency states for each processor. Values
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 63ada177b40c..fc6c8ef92dcc 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -499,8 +499,8 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 #ifdef CONFIG_SYSFS
 
 /* pointer to _cpuid4_info array (for each cache leaf) */
-static DEFINE_PER_CPU(struct _cpuid4_info *, cpuid4_info);
-#define CPUID4_INFO_IDX(x, y)   (&((per_cpu(cpuid4_info, x))[y]))
+static DEFINE_PER_CPU(struct _cpuid4_info *, ici_cpuid4_info);
+#define CPUID4_INFO_IDX(x, y)   (&((per_cpu(ici_cpuid4_info, x))[y]))
 
 #ifdef CONFIG_SMP
 static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
@@ -512,7 +512,7 @@ static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
 
         if ((index == 3) && (c->x86_vendor == X86_VENDOR_AMD)) {
                 for_each_cpu(i, c->llc_shared_map) {
-                        if (!per_cpu(cpuid4_info, i))
+                        if (!per_cpu(ici_cpuid4_info, i))
                                 continue;
                         this_leaf = CPUID4_INFO_IDX(i, index);
                         for_each_cpu(sibling, c->llc_shared_map) {
@@ -536,7 +536,7 @@ static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
                             c->apicid >> index_msb) {
                                 cpumask_set_cpu(i,
                                         to_cpumask(this_leaf->shared_cpu_map));
-                                if (i != cpu && per_cpu(cpuid4_info, i))  {
+                                if (i != cpu && per_cpu(ici_cpuid4_info, i))  {
                                         sibling_leaf =
                                                 CPUID4_INFO_IDX(i, index);
                                         cpumask_set_cpu(cpu, to_cpumask(
@@ -575,8 +575,8 @@ static void __cpuinit free_cache_attributes(unsigned int cpu)
         for (i = 0; i < num_cache_leaves; i++)
                 cache_remove_shared_cpu_map(cpu, i);
 
-        kfree(per_cpu(cpuid4_info, cpu));
-        per_cpu(cpuid4_info, cpu) = NULL;
+        kfree(per_cpu(ici_cpuid4_info, cpu));
+        per_cpu(ici_cpuid4_info, cpu) = NULL;
 }
 
 static int
@@ -615,15 +615,15 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
         if (num_cache_leaves == 0)
                 return -ENOENT;
 
-        per_cpu(cpuid4_info, cpu) = kzalloc(
+        per_cpu(ici_cpuid4_info, cpu) = kzalloc(
             sizeof(struct _cpuid4_info) * num_cache_leaves, GFP_KERNEL);
-        if (per_cpu(cpuid4_info, cpu) == NULL)
+        if (per_cpu(ici_cpuid4_info, cpu) == NULL)
                 return -ENOMEM;
 
         smp_call_function_single(cpu, get_cpu_leaves, &retval, true);
         if (retval) {
-                kfree(per_cpu(cpuid4_info, cpu));
-                per_cpu(cpuid4_info, cpu) = NULL;
+                kfree(per_cpu(ici_cpuid4_info, cpu));
+                per_cpu(ici_cpuid4_info, cpu) = NULL;
         }
 
         return retval;
@@ -635,7 +635,7 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
 extern struct sysdev_class cpu_sysdev_class; /* from drivers/base/cpu.c */
 
 /* pointer to kobject for cpuX/cache */
-static DEFINE_PER_CPU(struct kobject *, cache_kobject);
+static DEFINE_PER_CPU(struct kobject *, ici_cache_kobject);
 
 struct _index_kobject {
         struct kobject kobj;
@@ -644,8 +644,8 @@ struct _index_kobject {
 };
 
 /* pointer to array of kobjects for cpuX/cache/indexY */
-static DEFINE_PER_CPU(struct _index_kobject *, index_kobject);
-#define INDEX_KOBJECT_PTR(x, y)         (&((per_cpu(index_kobject, x))[y]))
+static DEFINE_PER_CPU(struct _index_kobject *, ici_index_kobject);
+#define INDEX_KOBJECT_PTR(x, y)         (&((per_cpu(ici_index_kobject, x))[y]))
 
 #define show_one_plus(file_name, object, val)                           \
 static ssize_t show_##file_name                                         \
@@ -864,10 +864,10 @@ static struct kobj_type ktype_percpu_entry = {
 
 static void __cpuinit cpuid4_cache_sysfs_exit(unsigned int cpu)
 {
-        kfree(per_cpu(cache_kobject, cpu));
-        kfree(per_cpu(index_kobject, cpu));
-        per_cpu(cache_kobject, cpu) = NULL;
-        per_cpu(index_kobject, cpu) = NULL;
+        kfree(per_cpu(ici_cache_kobject, cpu));
+        kfree(per_cpu(ici_index_kobject, cpu));
+        per_cpu(ici_cache_kobject, cpu) = NULL;
+        per_cpu(ici_index_kobject, cpu) = NULL;
         free_cache_attributes(cpu);
 }
 
@@ -883,14 +883,14 @@ static int __cpuinit cpuid4_cache_sysfs_init(unsigned int cpu)
                 return err;
 
         /* Allocate all required memory */
-        per_cpu(cache_kobject, cpu) =
+        per_cpu(ici_cache_kobject, cpu) =
                 kzalloc(sizeof(struct kobject), GFP_KERNEL);
-        if (unlikely(per_cpu(cache_kobject, cpu) == NULL))
+        if (unlikely(per_cpu(ici_cache_kobject, cpu) == NULL))
                 goto err_out;
 
-        per_cpu(index_kobject, cpu) = kzalloc(
+        per_cpu(ici_index_kobject, cpu) = kzalloc(
             sizeof(struct _index_kobject) * num_cache_leaves, GFP_KERNEL);
-        if (unlikely(per_cpu(index_kobject, cpu) == NULL))
+        if (unlikely(per_cpu(ici_index_kobject, cpu) == NULL))
                 goto err_out;
 
         return 0;
@@ -914,7 +914,7 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
         if (unlikely(retval < 0))
                 return retval;
 
-        retval = kobject_init_and_add(per_cpu(cache_kobject, cpu),
+        retval = kobject_init_and_add(per_cpu(ici_cache_kobject, cpu),
                                       &ktype_percpu_entry,
                                       &sys_dev->kobj, "%s", "cache");
         if (retval < 0) {
@@ -928,12 +928,12 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
                 this_object->index = i;
                 retval = kobject_init_and_add(&(this_object->kobj),
                                               &ktype_cache,
-                                              per_cpu(cache_kobject, cpu),
+                                              per_cpu(ici_cache_kobject, cpu),
                                               "index%1lu", i);
                 if (unlikely(retval)) {
                         for (j = 0; j < i; j++)
                                 kobject_put(&(INDEX_KOBJECT_PTR(cpu, j)->kobj));
-                        kobject_put(per_cpu(cache_kobject, cpu));
+                        kobject_put(per_cpu(ici_cache_kobject, cpu));
                         cpuid4_cache_sysfs_exit(cpu);
                         return retval;
                 }
@@ -941,7 +941,7 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
         }
         cpumask_set_cpu(cpu, to_cpumask(cache_dev_map));
 
-        kobject_uevent(per_cpu(cache_kobject, cpu), KOBJ_ADD);
+        kobject_uevent(per_cpu(ici_cache_kobject, cpu), KOBJ_ADD);
         return 0;
 }
 
@@ -950,7 +950,7 @@ static void __cpuinit cache_remove_dev(struct sys_device * sys_dev)
         unsigned int cpu = sys_dev->id;
         unsigned long i;
 
-        if (per_cpu(cpuid4_info, cpu) == NULL)
+        if (per_cpu(ici_cpuid4_info, cpu) == NULL)
                 return;
         if (!cpumask_test_cpu(cpu, to_cpumask(cache_dev_map)))
                 return;
@@ -958,7 +958,7 @@ static void __cpuinit cache_remove_dev(struct sys_device * sys_dev)
 
         for (i = 0; i < num_cache_leaves; i++)
                 kobject_put(&(INDEX_KOBJECT_PTR(cpu, i)->kobj));
-        kobject_put(per_cpu(cache_kobject, cpu));
+        kobject_put(per_cpu(ici_cache_kobject, cpu));
         cpuid4_cache_sysfs_exit(cpu);
 }
 
diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c
index 3c1b12d461d1..e006e56f699c 100644
--- a/arch/x86/kernel/cpu/mtrr/if.c
+++ b/arch/x86/kernel/cpu/mtrr/if.c
@@ -4,6 +4,7 @@
 #include <linux/proc_fs.h>
 #include <linux/module.h>
 #include <linux/ctype.h>
+#include <linux/string.h>
 #include <linux/init.h>
 
 #define LINE_SIZE 80
@@ -133,8 +134,7 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
                 return -EINVAL;
 
         base = simple_strtoull(line + 5, &ptr, 0);
-        while (isspace(*ptr))
-                ptr++;
+        ptr = skip_spaces(ptr);
 
         if (strncmp(ptr, "size=", 5))
                 return -EINVAL;
@@ -142,14 +142,11 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
         size = simple_strtoull(ptr + 5, &ptr, 0);
         if ((base & 0xfff) || (size & 0xfff))
                 return -EINVAL;
-        while (isspace(*ptr))
-                ptr++;
+        ptr = skip_spaces(ptr);
 
         if (strncmp(ptr, "type=", 5))
                 return -EINVAL;
-        ptr += 5;
-        while (isspace(*ptr))
-                ptr++;
+        ptr = skip_spaces(ptr + 5);
 
         for (i = 0; i < MTRR_NUM_TYPES; ++i) {
                 if (strcmp(ptr, mtrr_strings[i]))
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index ab1a8a89b984..45506d5dd8df 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1632,6 +1632,7 @@ static void intel_pmu_drain_bts_buffer(struct cpu_hw_events *cpuc)
 
         data.period     = event->hw.last_period;
         data.addr       = 0;
+        data.raw        = NULL;
         regs.ip         = 0;
 
         /*
@@ -1749,6 +1750,7 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
         u64 val;
 
         data.addr = 0;
+        data.raw = NULL;
 
         cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -1794,6 +1796,7 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
         u64 ack, status;
 
         data.addr = 0;
+        data.raw = NULL;
 
         cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -1857,6 +1860,7 @@ static int amd_pmu_handle_irq(struct pt_regs *regs)
         u64 val;
 
         data.addr = 0;
+        data.raw = NULL;
 
         cpuc = &__get_cpu_var(cpu_hw_events);
 
@@ -2062,12 +2066,6 @@ static __init int p6_pmu_init(void)
 
         x86_pmu = p6_pmu;
 
-        if (!cpu_has_apic) {
-                pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
-                pr_info("no hardware sampling interrupt available.\n");
-                x86_pmu.apic = 0;
-        }
-
         return 0;
 }
 
@@ -2159,6 +2157,16 @@ static __init int amd_pmu_init(void)
         return 0;
 }
 
+static void __init pmu_check_apic(void)
+{
+        if (cpu_has_apic)
+                return;
+
+        x86_pmu.apic = 0;
+        pr_info("no APIC, boot with the \"lapic\" boot parameter to force-enable it.\n");
+        pr_info("no hardware sampling interrupt available.\n");
+}
+
 void __init init_hw_perf_events(void)
 {
         int err;
@@ -2180,6 +2188,8 @@ void __init init_hw_perf_events(void)
                 return;
         }
 
+        pmu_check_apic();
+
         pr_cont("%s PMU driver.\n", x86_pmu.name);
 
         if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) {
@@ -2287,7 +2297,7 @@ void callchain_store(struct perf_callchain_entry *entry, u64 ip)
 
 static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry);
 static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_nmi_entry);
-static DEFINE_PER_CPU(int, in_nmi_frame);
+static DEFINE_PER_CPU(int, in_ignored_frame);
 
 
 static void
@@ -2303,8 +2313,9 @@ static void backtrace_warning(void *data, char *msg)
 
 static int backtrace_stack(void *data, char *name)
 {
-        per_cpu(in_nmi_frame, smp_processor_id()) =
-                        x86_is_stack_id(NMI_STACK, name);
+        per_cpu(in_ignored_frame, smp_processor_id()) =
+                        x86_is_stack_id(NMI_STACK, name) ||
+                        x86_is_stack_id(DEBUG_STACK, name);
 
         return 0;
 }
@@ -2313,7 +2324,7 @@ static void backtrace_address(void *data, unsigned long addr, int reliable)
 {
         struct perf_callchain_entry *entry = data;
 
-        if (per_cpu(in_nmi_frame, smp_processor_id()))
+        if (per_cpu(in_ignored_frame, smp_processor_id()))
                 return;
 
         if (reliable)