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[CPUFREQ] allow use of the powersave governor as the default one

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Allow use of the powersave cpufreq governor as the default one for EMBEDDED
configs.

Signed-off-by: Alessandro Guido <alessandro.guido@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Alessandro Guido
2008-04-18 13:31:13 -07:00
committed by Dave Jones
parent 605400a8ab
commit 30d221db44
3 changed files with 18 additions and 2 deletions
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9
drivers/cpufreq/Kconfig
View File

@@ -69,6 +69,15 @@ config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
the frequency statically to the highest frequency supported by the frequency statically to the highest frequency supported by
the CPU. the CPU.
config CPU_FREQ_DEFAULT_GOV_POWERSAVE
bool "powersave"
depends on EMBEDDED
select CPU_FREQ_GOV_POWERSAVE
help
Use the CPUFreq governor 'powersave' as default. This sets
the frequency statically to the lowest frequency supported by
the CPU.
config CPU_FREQ_DEFAULT_GOV_USERSPACE config CPU_FREQ_DEFAULT_GOV_USERSPACE
bool "userspace" bool "userspace"
select CPU_FREQ_GOV_USERSPACE select CPU_FREQ_GOV_USERSPACE

8
drivers/cpufreq/cpufreq_powersave.c
View File

@@ -35,12 +35,12 @@ static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
return 0; return 0;
} }
static struct cpufreq_governor cpufreq_gov_powersave = { struct cpufreq_governor cpufreq_gov_powersave = {
.name = "powersave", .name = "powersave",
.governor = cpufreq_governor_powersave, .governor = cpufreq_governor_powersave,
.owner = THIS_MODULE, .owner = THIS_MODULE,
}; };
EXPORT_SYMBOL(cpufreq_gov_powersave);
static int __init cpufreq_gov_powersave_init(void) static int __init cpufreq_gov_powersave_init(void)
{ {
@@ -58,5 +58,9 @@ MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
fs_initcall(cpufreq_gov_powersave_init);
#else
module_init(cpufreq_gov_powersave_init); module_init(cpufreq_gov_powersave_init);
#endif
module_exit(cpufreq_gov_powersave_exit); module_exit(cpufreq_gov_powersave_exit);

3
include/linux/cpufreq.h
View File

@@ -308,6 +308,9 @@ extern struct cpufreq_governor cpufreq_gov_performance;
#endif #endif
#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_performance) #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_performance)
#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE)
extern struct cpufreq_governor cpufreq_gov_powersave;
#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_powersave)
#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE) #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE)
extern struct cpufreq_governor cpufreq_gov_userspace; extern struct cpufreq_governor cpufreq_gov_userspace;
#define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_userspace) #define CPUFREQ_DEFAULT_GOVERNOR (&cpufreq_gov_userspace)