From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zoran Markovic Subject: [RFC PATCH] power: move pm_qos update timeout handler to power-efficient workqueue Date: Fri, 31 Jan 2014 13:48:22 -0800 Message-ID: <1391204902-13389-1-git-send-email-zoran.markovic@linaro.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Shaibal Dutta , Pavel Machek , "Rafael J. Wysocki" , Len Brown , Zoran Markovic List-Id: linux-pm@vger.kernel.org From: Shaibal Dutta 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 Cc: "Rafael J. Wysocki" Cc: Len Brown Signed-off-by: Shaibal Dutta [zoran.markovic@linaro.org: Rebased to latest kernel. Fixed code alignment. Added commit message.] Signed-off-by: Zoran Markovic --- 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