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[CPUFREQ] change cpu freq tables to per_cpu variables

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Change cpufreq tables from arrays to per_cpu variables in
drivers/acpi/processor_thermal.c

Based on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
This commit is contained in:
Mike Travis 2008-03-05 08:31:29 -08:00 committed by Dave Jones
parent 25aca347d4
commit c938ac2132
1 changed files with 16 additions and 14 deletions
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30
drivers/acpi/processor_thermal.c
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@ -97,7 +97,7 @@ static int acpi_processor_apply_limit(struct acpi_processor *pr)
#define CPUFREQ_THERMAL_MIN_STEP 0 #define CPUFREQ_THERMAL_MIN_STEP 0
#define CPUFREQ_THERMAL_MAX_STEP 3 #define CPUFREQ_THERMAL_MAX_STEP 3
static unsigned int cpufreq_thermal_reduction_pctg[NR_CPUS]; static DEFINE_PER_CPU(unsigned int, cpufreq_thermal_reduction_pctg);
static unsigned int acpi_thermal_cpufreq_is_init = 0; static unsigned int acpi_thermal_cpufreq_is_init = 0;
static int cpu_has_cpufreq(unsigned int cpu) static int cpu_has_cpufreq(unsigned int cpu)
@ -113,9 +113,9 @@ static int acpi_thermal_cpufreq_increase(unsigned int cpu)
if (!cpu_has_cpufreq(cpu)) if (!cpu_has_cpufreq(cpu))
return -ENODEV; return -ENODEV;
if (cpufreq_thermal_reduction_pctg[cpu] < if (per_cpu(cpufreq_thermal_reduction_pctg, cpu) <
CPUFREQ_THERMAL_MAX_STEP) { CPUFREQ_THERMAL_MAX_STEP) {
cpufreq_thermal_reduction_pctg[cpu]++; per_cpu(cpufreq_thermal_reduction_pctg, cpu)++;
cpufreq_update_policy(cpu); cpufreq_update_policy(cpu);
return 0; return 0;
} }
@ -128,14 +128,14 @@ static int acpi_thermal_cpufreq_decrease(unsigned int cpu)
if (!cpu_has_cpufreq(cpu)) if (!cpu_has_cpufreq(cpu))
return -ENODEV; return -ENODEV;
if (cpufreq_thermal_reduction_pctg[cpu] > if (per_cpu(cpufreq_thermal_reduction_pctg, cpu) >
(CPUFREQ_THERMAL_MIN_STEP + 1)) (CPUFREQ_THERMAL_MIN_STEP + 1))
cpufreq_thermal_reduction_pctg[cpu]--; per_cpu(cpufreq_thermal_reduction_pctg, cpu)--;
else else
cpufreq_thermal_reduction_pctg[cpu] = 0; per_cpu(cpufreq_thermal_reduction_pctg, cpu) = 0;
cpufreq_update_policy(cpu); cpufreq_update_policy(cpu);
/* We reached max freq again and can leave passive mode */ /* We reached max freq again and can leave passive mode */
return !cpufreq_thermal_reduction_pctg[cpu]; return !per_cpu(cpufreq_thermal_reduction_pctg, cpu);
} }
static int acpi_thermal_cpufreq_notifier(struct notifier_block *nb, static int acpi_thermal_cpufreq_notifier(struct notifier_block *nb,
@ -147,9 +147,10 @@ static int acpi_thermal_cpufreq_notifier(struct notifier_block *nb,
if (event != CPUFREQ_ADJUST) if (event != CPUFREQ_ADJUST)
goto out; goto out;
max_freq = max_freq = (
(policy->cpuinfo.max_freq * policy->cpuinfo.max_freq *
(100 - cpufreq_thermal_reduction_pctg[policy->cpu] * 20)) / 100; (100 - per_cpu(cpufreq_thermal_reduction_pctg, policy->cpu) * 20)
) / 100;
cpufreq_verify_within_limits(policy, 0, max_freq); cpufreq_verify_within_limits(policy, 0, max_freq);
@ -174,7 +175,7 @@ static int cpufreq_get_cur_state(unsigned int cpu)
if (!cpu_has_cpufreq(cpu)) if (!cpu_has_cpufreq(cpu))
return 0; return 0;
return cpufreq_thermal_reduction_pctg[cpu]; return per_cpu(cpufreq_thermal_reduction_pctg, cpu);
} }
static int cpufreq_set_cur_state(unsigned int cpu, int state) static int cpufreq_set_cur_state(unsigned int cpu, int state)
@ -182,7 +183,7 @@ static int cpufreq_set_cur_state(unsigned int cpu, int state)
if (!cpu_has_cpufreq(cpu)) if (!cpu_has_cpufreq(cpu))
return 0; return 0;
cpufreq_thermal_reduction_pctg[cpu] = state; per_cpu(cpufreq_thermal_reduction_pctg, cpu) = state;
cpufreq_update_policy(cpu); cpufreq_update_policy(cpu);
return 0; return 0;
} }
@ -191,8 +192,9 @@ void acpi_thermal_cpufreq_init(void)
{ {
int i; int i;
for (i = 0; i < NR_CPUS; i++) for (i = 0; i < nr_cpu_ids; i++)
cpufreq_thermal_reduction_pctg[i] = 0; if (cpu_present(i))
per_cpu(cpufreq_thermal_reduction_pctg, i) = 0;
i = cpufreq_register_notifier(&acpi_thermal_cpufreq_notifier_block, i = cpufreq_register_notifier(&acpi_thermal_cpufreq_notifier_block,
CPUFREQ_POLICY_NOTIFIER); CPUFREQ_POLICY_NOTIFIER);