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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-05-14 01:01:08 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-05-30 14:34:17 +0200
commit16de72b9f4d07e393bea7b1221898b3be718a296 (patch)
tree43660e07ea40059549e3ee3ae001510152b8b421
parent9e8c0a899b2f89b8367d33668f6819892f0a00f2 (diff)
downloadleg-kernel-16de72b9f4d07e393bea7b1221898b3be718a296.tar.gz
cpufreq: governor: Simplify performance and powersave governors
The performance and powersave cpufreq governors handle the CPUFREQ_GOV_START event in the same way as CPUFREQ_GOV_LIMITS. However, the cpufreq core always invokes cpufreq_governor() with the event argument equal to CPUFREQ_GOV_LIMITS right after invoking it with event equal to CPUFREQ_GOV_START. As a result, for both the governors in question, __cpufreq_driver_target() is executed twice in a row with the same arguments which is not useful. For this reason, simplify the performance and powersave governors to handle the CPUFREQ_GOV_LIMITS event only as that's going to be sufficient for the governor start too. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
-rw-r--r--drivers/cpufreq/cpufreq_performance.c4
-rw-r--r--drivers/cpufreq/cpufreq_powersave.c4
2 files changed, 2 insertions, 6 deletions
diff --git a/drivers/cpufreq/cpufreq_performance.c b/drivers/cpufreq/cpufreq_performance.c
index af9f4b96f5a8..dd4dca3ab844 100644
--- a/drivers/cpufreq/cpufreq_performance.c
+++ b/drivers/cpufreq/cpufreq_performance.c
@@ -20,10 +20,8 @@ static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
- case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
- pr_debug("setting to %u kHz because of event %u\n",
- policy->max, event);
+ pr_debug("setting to %u kHz\n", policy->max);
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
break;
diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c
index b8b400232a74..691e573e46ee 100644
--- a/drivers/cpufreq/cpufreq_powersave.c
+++ b/drivers/cpufreq/cpufreq_powersave.c
@@ -20,10 +20,8 @@ static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
- case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
- pr_debug("setting to %u kHz because of event %u\n",
- policy->min, event);
+ pr_debug("setting to %u kHz\n", policy->min);
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_L);
break;