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authorThomas Gleixner <tglx@linutronix.de>2007-02-16 01:27:47 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-16 08:13:58 -0800
commitfd064b9b7770d5c7705bf9542950c7bd81c30f98 (patch)
tree8b14c81f983e49b5553fd6764139bffb1d4f1648 /kernel/hrtimer.c
parent1cfd68496e53f7be09a3c1358d1d389004217541 (diff)
downloadblackbird-op-linux-fd064b9b7770d5c7705bf9542950c7bd81c30f98.tar.gz
blackbird-op-linux-fd064b9b7770d5c7705bf9542950c7bd81c30f98.zip
[PATCH] Extend next_timer_interrupt() to use a reference jiffie
For CONFIG_NO_HZ we need to calculate the next timer wheel event based on a given jiffie value. Extend the existing code to allow the extra 'now' argument. Provide a compability function for the existing implementations to call the function with now == jiffies. (This also solves the racyness of the original code vs. jiffies changing during the iteration.) No functional changes to existing users of this infrastructure. [ remove WARN_ON() that triggered on s390, by Carsten Otte <cotte@de.ibm.com> ] [ made new helper static, Adrian Bunk <bunk@stusta.de> ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/hrtimer.c')
-rw-r--r--kernel/hrtimer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index c0fdb9b6d296..bd57ef403049 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -533,7 +533,7 @@ ktime_t hrtimer_get_remaining(const struct hrtimer *timer)
}
EXPORT_SYMBOL_GPL(hrtimer_get_remaining);
-#ifdef CONFIG_NO_IDLE_HZ
+#if defined(CONFIG_NO_IDLE_HZ) || defined(CONFIG_NO_HZ)
/**
* hrtimer_get_next_event - get the time until next expiry event
*
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