From: Shaibal Dutta <[email protected]> To avoid waking up idle CPUs, allow the scheduler to select the best CPU to handle pm_qos update timeouts. This extends idle residency times and conserves power.
This functionality is enabled when CONFIG_WQ_POWER_EFFICIENT is selected. Cc: Pavel Machek <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Cc: Len Brown <[email protected]> Signed-off-by: Shaibal Dutta <[email protected]> [[email protected]: Rebased to latest kernel. Fixed code alignment. Added commit message.] Signed-off-by: Zoran Markovic <[email protected]> --- kernel/power/qos.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 8dff9b4..5e35a3a 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -405,7 +405,8 @@ void pm_qos_update_request_timeout(struct pm_qos_request *req, s32 new_value, pm_qos_array[req->pm_qos_class]->constraints, &req->node, PM_QOS_UPDATE_REQ, new_value); - schedule_delayed_work(&req->work, usecs_to_jiffies(timeout_us)); + queue_delayed_work(system_power_efficient_wq, + &req->work, usecs_to_jiffies(timeout_us)); } /** -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
