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OpenCloudOS-Kernel
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Merge branch 'cpufreq' into release

This commit is contained in:
Len Brown 2009-04-24 01:35:15 -04:00
parent f752a091ab d876dfbbf5
commit 09041daeea
1 changed files with 16 additions and 14 deletions
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30
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
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@ -65,14 +65,18 @@ enum {
struct acpi_cpufreq_data {
struct acpi_processor_performance *acpi_data;
struct cpufreq_frequency_table *freq_table;
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);
struct acpi_msr_data {
u64 saved_aperf, saved_mperf;
};
static DEFINE_PER_CPU(struct acpi_msr_data, msr_data);
DEFINE_TRACE(power_mark);
/* acpi_perf_data is a pointer to percpu data. */
@ -287,11 +291,11 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
return 0;
cur.aperf.whole = readin.aperf.whole -
per_cpu(drv_data, cpu)->saved_aperf;
per_cpu(msr_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;
per_cpu(msr_data, cpu).saved_mperf;
per_cpu(msr_data, cpu).saved_aperf = readin.aperf.whole;
per_cpu(msr_data, cpu).saved_mperf = readin.mperf.whole;
#ifdef __i386__
/*
@ -335,7 +339,7 @@ static unsigned int get_measured_perf(struct cpufreq_policy *policy,
#endif
retval = per_cpu(drv_data, policy->cpu)->max_freq * perf_percent / 100;
retval = (policy->cpuinfo.max_freq * perf_percent) / 100;
return retval;
}
@ -688,16 +692,11 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* Check for high latency (>20uS) from buggy BIOSes, like on T42 */
if (perf->control_register.space_id == ACPI_ADR_SPACE_FIXED_HARDWARE &&
policy->cpuinfo.transition_latency > 20 * 1000) {
static int print_once;
policy->cpuinfo.transition_latency = 20 * 1000;
if (!print_once) {
print_once = 1;
printk(KERN_INFO "Capping off P-state tranision latency"
" at 20 uS\n");
}
printk_once(KERN_INFO "Capping off P-state tranision"
" latency at 20 uS\n");
}
data->max_freq = perf->states[0].core_frequency * 1000;
/* table init */
for (i = 0; i < perf->state_count; i++) {
if (i > 0 && perf->states[i].core_frequency >=
@ -716,6 +715,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
if (result)
goto err_freqfree;
if (perf->states[0].core_frequency * 1000 != policy->cpuinfo.max_freq)
printk(KERN_WARNING FW_WARN "P-state 0 is not max freq\n");
switch (perf->control_register.space_id) {
case ACPI_ADR_SPACE_SYSTEM_IO:
/* Current speed is unknown and not detectable by IO port */