diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:59:23 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-11 15:59:23 -0800 |
| commit | 2fe77b81c77eed92c4c0439f74c8148a295b4a86 (patch) | |
| tree | 8a5e33fc3804f29bbf5c95c2cd28ccbdaa4cf206 /drivers/acpi | |
| parent | cb5228a6949f525dba37d4eb3ee114426fef22c9 (diff) | |
| parent | e2f74f355e9e2914483db10c05d70e69e0b7ae04 (diff) | |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface
[CPUFREQ] make internal cpufreq_add_dev_* static
[CPUFREQ] use an enum for speedstep processor identification
[CPUFREQ] Document units for transition latency
[CPUFREQ] Use global sysfs cpufreq structure for conservative governor tunings
[CPUFREQ] Documentation: ABI: /sys/devices/system/cpu/cpu#/cpufreq/
[CPUFREQ] powernow-k6: set transition latency value so ondemand governor can be used
[CPUFREQ] cpumask: don't put a cpumask on the stack in x86...cpufreq/powernow-k8.c
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_perflib.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 8ba0ed0b9dd..01e366d2b6f 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -167,6 +167,19 @@ int acpi_processor_ppc_has_changed(struct acpi_processor *pr) return cpufreq_update_policy(pr->id); } +int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) +{ + struct acpi_processor *pr; + + pr = per_cpu(processors, cpu); + if (!pr || !pr->performance || !pr->performance->state_count) + return -ENODEV; + *limit = pr->performance->states[pr->performance_platform_limit]. + core_frequency * 1000; + return 0; +} +EXPORT_SYMBOL(acpi_processor_get_bios_limit); + void acpi_processor_ppc_init(void) { if (!cpufreq_register_notifier |