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Allow use of the powersave governor as the default one

PATCH New Alessandro Guido 1 participant 1 message Mar 23, 2008 CPU frequency scaling framework

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Alessandro Guido

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PATCH 1/1 Allow use of the powersave governor as the default one

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

Signed-off-by Alessandro Guido <[email protected]>

---

 drivers/cpufreq/Kconfig             |    9 +++++++++
 drivers/cpufreq/cpufreq_powersave.c |    8 ++++++--
 include/linux/cpufreq.h             |    3 +++
 3 files changed, 18 insertions(+), 2 deletions(-)
drivers/cpufreq/Kconfig +9 -0
index c159ae6..5f076ae 100644
@@ -69,6 +69,15 @@ config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
 	  the frequency statically to the highest frequency supported by
 	  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
 	bool "userspace"
 	select CPU_FREQ_GOV_USERSPACE
drivers/cpufreq/cpufreq_powersave.c +6 -2
index 13fe06b..88d2f44 100644
@@ -35,12 +35,12 @@ static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
 	return 0;
 }
 
-static struct cpufreq_governor cpufreq_gov_powersave = {
+struct cpufreq_governor cpufreq_gov_powersave = {
 	.name		= "powersave",
 	.governor	= cpufreq_governor_powersave,
 	.owner		= THIS_MODULE,
 };
-
+EXPORT_SYMBOL(cpufreq_gov_powersave);
 
 static int __init cpufreq_gov_powersave_init(void)
 {

@@ -58,5 +58,9 @@ MODULE_AUTHOR("Dominik Brodowski <[email protected]>");
 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
 MODULE_LICENSE("GPL");
 
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
+fs_initcall(cpufreq_gov_powersave_init);
+#else
 module_init(cpufreq_gov_powersave_init);
+#endif
 module_exit(cpufreq_gov_powersave_exit);
include/linux/cpufreq.h +3 -0
index ddd8652..dc31a40 100644
@@ -307,6 +307,9 @@ extern struct cpufreq_governor cpufreq_gov_performance;
 #endif
 #ifdef CONFIG_CPU_FREQ_DEFAULT_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)
 extern struct cpufreq_governor cpufreq_gov_userspace;
 #define CPUFREQ_DEFAULT_GOVERNOR	(&cpufreq_gov_userspace)