From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 16 Oct 2008 22:38:48 +0000 (-0700)
Subject: Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Tag: v2.6.28-rc1~267
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=8cde1ad6683f8738ad71f788dca8ab4810cf5afe;hp=6bb7a935489dab20802dde6c2cb7d8582f4849bf;p=linux-2.6-omap-h63xx.git

Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched_clock: prevent scd->clock from moving backwards
---

diff --git a/kernel/sched_clock.c b/kernel/sched_clock.c
index e8ab096ddfe..81787248b60 100644
--- a/kernel/sched_clock.c
+++ b/kernel/sched_clock.c
@@ -118,13 +118,13 @@ static u64 __update_sched_clock(struct sched_clock_data *scd, u64 now)
 
 	/*
 	 * scd->clock = clamp(scd->tick_gtod + delta,
-	 * 		      max(scd->tick_gtod, scd->clock),
-	 * 		      scd->tick_gtod + TICK_NSEC);
+	 *		      max(scd->tick_gtod, scd->clock),
+	 *		      max(scd->clock, scd->tick_gtod + TICK_NSEC));
 	 */
 
 	clock = scd->tick_gtod + delta;
 	min_clock = wrap_max(scd->tick_gtod, scd->clock);
-	max_clock = scd->tick_gtod + TICK_NSEC;
+	max_clock = wrap_max(scd->clock, scd->tick_gtod + TICK_NSEC);
 
 	clock = wrap_max(clock, min_clock);
 	clock = wrap_min(clock, max_clock);