- patches.suse/slab-handle-memoryless-nodes-v2a.patch: Refresh.

[linux-flexiantxendom0-3.2.10.git] / arch / x86 / kernel / cpu / cpufreq / acpi-cpufreq.c

diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 8b581d3..1b1920f 100644 (file)
--- 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;
@@ -190,9 +190,11 @@ static void do_drv_write(void *_cmd)
 
 static void drv_read(struct drv_cmd *cmd)
 {
+       int err;
        cmd->val = 0;
 
-       smp_call_function_single(cpumask_any(cmd->mask), do_drv_read, cmd, 1);
+       err = smp_call_function_any(cmd->mask, do_drv_read, cmd, 1);
+       WARN_ON_ONCE(err);      /* smp_call_function_any() was buggy? */
 }
 
 static void drv_write(struct drv_cmd *cmd)
@@ -214,14 +216,14 @@ 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 +270,8 @@ 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 +280,7 @@ 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 +324,7 @@ 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 +418,7 @@ 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 +576,7 @@ 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 +727,20 @@ 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 +751,7 @@ 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 +766,15 @@ 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)