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acpi-cpufreq: Do not let get_measured perf depend on internal variable

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Take already available policy->cpuinfo.max_freq and get rid of acpi-cpufreq
specific max_freq variable.

This implies that P0 is always the highest frequency which should always
be true as ACPI spec says:
As a result, the zeroth entry describes the highest performance state

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Thomas Renninger 2009-04-17 16:22:08 +02:00 committed by Len Brown
parent d91758f5dd
commit d876dfbbf5
1 changed files with 4 additions and 3 deletions
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7
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
View file

@ -65,7 +65,6 @@ 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;
};
@ -340,7 +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;
}
@ -698,7 +697,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
" 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 >=
@ -717,6 +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 */