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authorTony Lindgren <tony@atomide.com>2006-03-06 15:42:45 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-06 18:40:44 -0800
commit69239749e1ac4f3496906aa4267cb9f61ce52c9c (patch)
treec64bc2c254b7fa81b50b11c851fe5c86ecdd83c1 /include
parentf7c09bd972b7111b8c69bf57a189571edd4d4a7d (diff)
[PATCH] fix next_timer_interrupt() for hrtimer
Also from Thomas Gleixner <tglx@linutronix.de> Function next_timer_interrupt() got broken with a recent patch 6ba1b91213e81aa92b5cf7539f7d2a94ff54947c as sys_nanosleep() was moved to hrtimer. This broke things as next_timer_interrupt() did not check hrtimer tree for next event. Function next_timer_interrupt() is needed with dyntick (CONFIG_NO_IDLE_HZ, VST) implementations, as the system can be in idle when next hrtimer event was supposed to happen. At least ARM and S390 currently use next_timer_interrupt(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/hrtimer.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 6361544bb6a..6401c31d6ad 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -116,6 +116,10 @@ extern int hrtimer_try_to_cancel(struct hrtimer *timer);
extern ktime_t hrtimer_get_remaining(const struct hrtimer *timer);
extern int hrtimer_get_res(const clockid_t which_clock, struct timespec *tp);
+#ifdef CONFIG_NO_IDLE_HZ
+extern ktime_t hrtimer_get_next_event(void);
+#endif
+
static inline int hrtimer_active(const struct hrtimer *timer)
{
return timer->state == HRTIMER_PENDING;