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| author | Thomas Renninger <trenn@suse.de> | 2009-04-17 16:22:08 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-04-19 22:47:21 -0400 |
| commit | d876dfbbf5c8728102fb4f683450fa9ae3259cda (patch) | |
| tree | 238a665c3abd1384c2e1bcd96f5b9026f51f9f81 /arch/x86 | |
| parent | d91758f5ddb80e91176fa2cf80c88c1633950b3d (diff) | |
| download | linux-stable-d876dfbbf5c8728102fb4f683450fa9ae3259cda.tar.gz linux-stable-d876dfbbf5c8728102fb4f683450fa9ae3259cda.tar.bz2 linux-stable-d876dfbbf5c8728102fb4f683450fa9ae3259cda.zip | |
acpi-cpufreq: Do not let get_measured perf depend on internal variable
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>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c index aec3161abede..208ecf6643df 100644 --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c @@ -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 */ |