Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932681AbaAaTSi (ORCPT ); Fri, 31 Jan 2014 14:18:38 -0500 Received: from mail-pd0-f181.google.com ([209.85.192.181]:46604 "EHLO mail-pd0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932271AbaAaTSh (ORCPT ); Fri, 31 Jan 2014 14:18:37 -0500 From: Zoran Markovic To: linux-kernel@vger.kernel.org Cc: Shaibal Dutta , John Stultz , Thomas Gleixner , Shaibal Dutta , Zoran Markovic Subject: [RFC PATCH] timekeeping: move clock sync work to power efficient workqueue Date: Fri, 31 Jan 2014 11:18:24 -0800 Message-Id: <1391195904-12497-1-git-send-email-zoran.markovic@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Shaibal Dutta For better use of CPU idle time, allow the scheduler to select the CPU on which the CMOS clock sync work would be scheduled. This improves idle residency time and conserver power. This functionality is enabled when CONFIG_WQ_POWER_EFFICIENT is selected. Cc: John Stultz Cc: Thomas Gleixner Signed-off-by: Shaibal Dutta [zoran.markovic@linaro.org: Added commit message. Aligned code.] Signed-off-by: Zoran Markovic --- kernel/time/ntp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index af8d1d4..419a52c 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -514,12 +514,13 @@ static void sync_cmos_clock(struct work_struct *work) next.tv_sec++; next.tv_nsec -= NSEC_PER_SEC; } - schedule_delayed_work(&sync_cmos_work, timespec_to_jiffies(&next)); + queue_delayed_work(system_power_efficient_wq, + &sync_cmos_work, timespec_to_jiffies(&next)); } void ntp_notify_cmos_timer(void) { - schedule_delayed_work(&sync_cmos_work, 0); + queue_delayed_work(system_power_efficient_wq, &sync_cmos_work, 0); } #else -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/