[13/26] cpu_cooling: don't iterate over all allowed_cpus to update cpufreq policy

Message ID 52b233ae071b3f51d05e96f060ef35903e6c3b03.1417167599.git.viresh.kumar@linaro.org
State New
Headers show

Commit Message

Viresh Kumar Nov. 28, 2014, 9:44 a.m.
All CPUs present in 'allowed_cpus' share the same 'struct cpufreq_policy'
structure and so calling cpufreq_update_policy() for each of them doesn't make
sense.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/thermal/cpu_cooling.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

Patch

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index c358ede..8ca0380 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -286,11 +286,10 @@  static unsigned int get_cpu_frequency(unsigned int cpu, unsigned long level)
 static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device,
 				 unsigned long cooling_state)
 {
-	unsigned int cpuid, clip_freq;
+	unsigned int clip_freq;
 	struct cpumask *mask = &cpufreq_device->allowed_cpus;
 	unsigned int cpu = cpumask_any(mask);
 
-
 	/* Check if the old cooling action is same as new cooling action */
 	if (cpufreq_device->cpufreq_state == cooling_state)
 		return 0;
@@ -303,10 +302,8 @@  static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device,
 	cpufreq_device->cpufreq_val = clip_freq;
 	notify_device = cpufreq_device;
 
-	for_each_cpu(cpuid, mask) {
-		if (is_cpufreq_valid(cpuid))
-			cpufreq_update_policy(cpuid);
-	}
+	if (is_cpufreq_valid(cpu))
+		cpufreq_update_policy(cpu);
 
 	notify_device = NOTIFY_INVALID;