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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-12 00:59:23 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-12 00:59:23 +0100
commit2fe77b81c77eed92c4c0439f74c8148a295b4a86 (patch)
tree8a5e33fc3804f29bbf5c95c2cd28ccbdaa4cf206 /drivers/acpi
parentStaging: batman: fix debug Kconfig option (diff)
parent[ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface (diff)
downloadlinux-2fe77b81c77eed92c4c0439f74c8148a295b4a86.tar.xz
linux-2fe77b81c77eed92c4c0439f74c8148a295b4a86.zip
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.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 8ba0ed0b9ddb..01e366d2b6fb 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