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Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index ecdb682ab51..208ecf6643d 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -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 */