Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...

[linux-2.6] / 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 fea0af0476b96371f4c71fabcb463ab65d74fc89..e2d870de837c2ba73599a8f58c9408669446ae9c 100644 (file)
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -67,7 +67,8 @@ struct acpi_cpufreq_data {
        unsigned int cpu_feature;
 };
 
-static struct acpi_cpufreq_data *drv_data[NR_CPUS];
+static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
+
 /* acpi_perf_data is a pointer to percpu data. */
 static struct acpi_processor_performance *acpi_perf_data;
 
@@ -191,9 +192,9 @@ static void drv_read(struct drv_cmd *cmd)
        cpumask_t saved_mask = current->cpus_allowed;
        cmd->val = 0;
 
-       set_cpus_allowed(current, cmd->mask);
+       set_cpus_allowed_ptr(current, &cmd->mask);
        do_drv_read(cmd);
-       set_cpus_allowed(current, saved_mask);
+       set_cpus_allowed_ptr(current, &saved_mask);
 }
 
 static void drv_write(struct drv_cmd *cmd)
@@ -202,30 +203,30 @@ static void drv_write(struct drv_cmd *cmd)
        unsigned int i;
 
        for_each_cpu_mask(i, cmd->mask) {
-               set_cpus_allowed(current, cpumask_of_cpu(i));
+               set_cpus_allowed_ptr(current, &cpumask_of_cpu(i));
                do_drv_write(cmd);
        }
 
-       set_cpus_allowed(current, saved_mask);
+       set_cpus_allowed_ptr(current, &saved_mask);
        return;
 }
 
-static u32 get_cur_val(cpumask_t mask)
+static u32 get_cur_val(const cpumask_t *mask)
 {
        struct acpi_processor_performance *perf;
        struct drv_cmd cmd;
 
-       if (unlikely(cpus_empty(mask)))
+       if (unlikely(cpus_empty(*mask)))
                return 0;
 
-       switch (drv_data[first_cpu(mask)]->cpu_feature) {
+       switch (per_cpu(drv_data, first_cpu(*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 = drv_data[first_cpu(mask)]->acpi_data;
+               perf = per_cpu(drv_data, first_cpu(*mask))->acpi_data;
                cmd.addr.io.port = perf->control_register.address;
                cmd.addr.io.bit_width = perf->control_register.bit_width;
                break;
@@ -233,7 +234,7 @@ static u32 get_cur_val(cpumask_t mask)
                return 0;
        }
 
-       cmd.mask = mask;
+       cmd.mask = *mask;
 
        drv_read(&cmd);
 
@@ -270,7 +271,7 @@ static unsigned int get_measured_perf(unsigned int cpu)
        unsigned int retval;
 
        saved_mask = current->cpus_allowed;
-       set_cpus_allowed(current, cpumask_of_cpu(cpu));
+       set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
        if (get_cpu() != cpu) {
                /* We were not able to run on requested processor */
                put_cpu();
@@ -325,10 +326,10 @@ static unsigned int get_measured_perf(unsigned int cpu)
 
 #endif
 
-       retval = drv_data[cpu]->max_freq * perf_percent / 100;
+       retval = per_cpu(drv_data, cpu)->max_freq * perf_percent / 100;
 
        put_cpu();
-       set_cpus_allowed(current, saved_mask);
+       set_cpus_allowed_ptr(current, &saved_mask);
 
        dprintk("cpu %d: performance percent %d\n", cpu, perf_percent);
        return retval;
@@ -336,7 +337,7 @@ static unsigned int get_measured_perf(unsigned int cpu)
 
 static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
 {
-       struct acpi_cpufreq_data *data = drv_data[cpu];
+       struct acpi_cpufreq_data *data = per_cpu(drv_data, cpu);
        unsigned int freq;
 
        dprintk("get_cur_freq_on_cpu (%d)\n", cpu);
@@ -346,13 +347,13 @@ static unsigned int get_cur_freq_on_cpu(unsigned int cpu)
                return 0;
        }
 
-       freq = extract_freq(get_cur_val(cpumask_of_cpu(cpu)), data);
+       freq = extract_freq(get_cur_val(&cpumask_of_cpu(cpu)), data);
        dprintk("cur freq = %u\n", freq);
 
        return freq;
 }
 
-static unsigned int check_freqs(cpumask_t mask, unsigned int freq,
+static unsigned int check_freqs(const cpumask_t *mask, unsigned int freq,
                                struct acpi_cpufreq_data *data)
 {
        unsigned int cur_freq;
@@ -370,7 +371,7 @@ static unsigned int check_freqs(cpumask_t 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 = drv_data[policy->cpu];
+       struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
        struct acpi_processor_performance *perf;
        struct cpufreq_freqs freqs;
        cpumask_t online_policy_cpus;
@@ -448,7 +449,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
        drv_write(&cmd);
 
        if (acpi_pstate_strict) {
-               if (!check_freqs(cmd.mask, freqs.new, data)) {
+               if (!check_freqs(&cmd.mask, freqs.new, data)) {
                        dprintk("acpi_cpufreq_target failed (%d)\n",
                                policy->cpu);
                        return -EAGAIN;
@@ -466,7 +467,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
 
 static int acpi_cpufreq_verify(struct cpufreq_policy *policy)
 {
-       struct acpi_cpufreq_data *data = drv_data[policy->cpu];
+       struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
 
        dprintk("acpi_cpufreq_verify\n");
 
@@ -570,7 +571,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
                return -ENOMEM;
 
        data->acpi_data = percpu_ptr(acpi_perf_data, cpu);
-       drv_data[cpu] = data;
+       per_cpu(drv_data, cpu) = data;
 
        if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
                acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
@@ -714,20 +715,20 @@ err_unreg:
        acpi_processor_unregister_performance(perf, cpu);
 err_free:
        kfree(data);
-       drv_data[cpu] = NULL;
+       per_cpu(drv_data, cpu) = NULL;
 
        return result;
 }
 
 static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 {
-       struct acpi_cpufreq_data *data = drv_data[policy->cpu];
+       struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
 
        dprintk("acpi_cpufreq_cpu_exit\n");
 
        if (data) {
                cpufreq_frequency_table_put_attr(policy->cpu);
-               drv_data[policy->cpu] = NULL;
+               per_cpu(drv_data, policy->cpu) = NULL;
                acpi_processor_unregister_performance(data->acpi_data,
                                                      policy->cpu);
                kfree(data);
@@ -738,7 +739,7 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 
 static int acpi_cpufreq_resume(struct cpufreq_policy *policy)
 {
-       struct acpi_cpufreq_data *data = drv_data[policy->cpu];
+       struct acpi_cpufreq_data *data = per_cpu(drv_data, policy->cpu);
 
        dprintk("acpi_cpufreq_resume\n");