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authorThomas Gleixner <tglx@linutronix.de>2007-05-09 02:35:15 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:56 -0700
commitb52f52a093bb1e841e014c2087b5bee7162da413 (patch)
tree7b7135897195fc9d14473d3ab824d59a4b65e5ad /kernel/timer.c
parent4037d452202e34214e8a939fa5621b2b3bbb45b7 (diff)
downloadlinux-b52f52a093bb1e841e014c2087b5bee7162da413.tar.bz2
clocksource: fix resume logic
We need to make sure that the clocksources are resumed, when timekeeping is resumed. The current resume logic does not guarantee this. Add a resume function pointer to the clocksource struct, so clocksource drivers which need to reinitialize the clocksource can provide a resume function. Add a resume function, which calls the maybe available clocksource resume functions and resets the watchdog function, so a stable TSC can be used accross suspend/resume. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/timer.c')
-rw-r--r--kernel/timer.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/timer.c b/kernel/timer.c
index de85f8491c1d..59a28b1752f8 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1499,6 +1499,8 @@ unregister_time_interpolator(struct time_interpolator *ti)
prev = &curr->next;
}
+ clocksource_resume();
+
write_seqlock_irqsave(&xtime_lock, flags);
if (ti == time_interpolator) {
/* we lost the best time-interpolator: */