Commit 82e730ba authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Greg Kroah-Hartman

itimers: Handle relative timers with CONFIG_TIME_LOW_RES proper

commit 51cbb524 upstream.

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: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Helge Deller <deller@gmx.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: linux-m68k@lists.linux-m68k.org
Cc: dhowells@redhat.com
Link: http://lkml.kernel.org/r/20160114164159.528222587@linutronix.deSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1c94da3e
...@@ -26,7 +26,7 @@ ...@@ -26,7 +26,7 @@
*/ */
static struct timeval itimer_get_remtime(struct hrtimer *timer) 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 * Racy but safe: if the itimer expires after the above
......
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