From: Thomas Gleixner Date: Thu, 14 Jan 2016 16:54:48 +0000 (+0000) Subject: itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper X-Git-Tag: v4.5-rc2~7^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=51cbb5242a41700a3f250ecfb48dcfb7e4375ea4;p=platform%2Fkernel%2Flinux-exynos.git itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper As Helge reported for timerfd we have the same issue in itimers. We return remaining time larger than the programmed relative time to user space in case of CONFIG_TIME_LOW_RES=y. Use the proper function to adjust the extra time added in hrtimer_start_range_ns(). Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Helge Deller Cc: John Stultz Cc: linux-m68k@lists.linux-m68k.org Cc: dhowells@redhat.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160114164159.528222587@linutronix.de Signed-off-by: Thomas Gleixner --- diff --git a/kernel/time/itimer.c b/kernel/time/itimer.c index 8d262b4..1d5c720 100644 --- a/kernel/time/itimer.c +++ b/kernel/time/itimer.c @@ -26,7 +26,7 @@ */ static struct timeval itimer_get_remtime(struct hrtimer *timer) { - ktime_t rem = hrtimer_get_remaining(timer); + ktime_t rem = __hrtimer_get_remaining(timer, true); /* * Racy but safe: if the itimer expires after the above