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authorShaibal Dutta <shaibal.dutta@linaro.org>2014-01-31 11:18:24 -0800
committerThomas Gleixner <tglx@linutronix.de>2014-02-07 15:34:28 +0100
commite8b175946c16d7001b22620f52d78ab497efc9d0 (patch)
tree373c898c227efc64ef5b07c277649f8b2f5c29e0 /kernel/time
parent38dbfb59d1175ef458d006556061adeaa8751b72 (diff)
downloadlinux-e8b175946c16d7001b22620f52d78ab497efc9d0.tar.bz2
timekeeping: Move clock sync work to power efficient workqueue
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. Signed-off-by: Shaibal Dutta <shaibal.dutta@broadcom.com> [zoran.markovic@linaro.org: Added commit message. Aligned code.] Signed-off-by: Zoran Markovic <zoran.markovic@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Link: http://lkml.kernel.org/r/1391195904-12497-1-git-send-email-zoran.markovic@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/ntp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index af8d1d4f3d55..419a52cecd20 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