From: Rafael J. Wysocki Date: Tue, 22 Mar 2016 00:17:43 +0000 (+0100) Subject: cpufreq: governor: Always schedule work on the CPU running update X-Git-Tag: v4.6-rc6~4^2^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=539a4c4247c2697d291a8fb02c485ccd7cf34f05;p=platform%2Fkernel%2Flinux-exynos.git cpufreq: governor: Always schedule work on the CPU running update Modify dbs_irq_work() to always schedule the process-context work on the current CPU which also ran the dbs_update_util_handler() that the irq_work being handled came from. This causes the entire frequency update handling (involving the "ondemand" or "conservative" governors) to be carried out by the CPU whose frequency is to be updated and reduces the overall amount of inter-CPU noise related to cpufreq. Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 1c25ef4..10a5cfe 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -329,7 +329,7 @@ static void dbs_irq_work(struct irq_work *irq_work) struct policy_dbs_info *policy_dbs; policy_dbs = container_of(irq_work, struct policy_dbs_info, irq_work); - schedule_work(&policy_dbs->work); + schedule_work_on(smp_processor_id(), &policy_dbs->work); } static void dbs_update_util_handler(struct update_util_data *data, u64 time,