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authorThomas Gleixner <tglx@linutronix.de>2011-05-20 16:18:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2011-05-23 13:59:53 +0200
commit9ec2690758a5467f24beb301cca5098078073bba (patch)
treee5bc78f690d12635a56460ea6f54b49318221dc8 /include/linux/hrtimer.h
parent250f972d85effad5b6e10da4bbd877e6a4b503b6 (diff)
timerfd: Manage cancelable timers in timerfd
Peter is concerned about the extra scan of CLOCK_REALTIME_COS in the timer interrupt. Yes, I did not think about it, because the solution was so elegant. I didn't like the extra list in timerfd when it was proposed some time ago, but with a rcu based list the list walk it's less horrible than the original global lock, which was held over the list iteration. Requested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'include/linux/hrtimer.h')
-rw-r--r--include/linux/hrtimer.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index eda4ccde0730..925c8c01db7b 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -155,7 +155,6 @@ enum hrtimer_base_type {
HRTIMER_BASE_REALTIME,
HRTIMER_BASE_MONOTONIC,
HRTIMER_BASE_BOOTTIME,
- HRTIMER_BASE_REALTIME_COS,
HRTIMER_MAX_CLOCK_BASES,
};
@@ -306,6 +305,11 @@ static inline int hrtimer_is_hres_active(struct hrtimer *timer)
#endif
extern void clock_was_set(void);
+#ifdef CONFIG_TIMERFD
+extern void timerfd_clock_was_set(void);
+#else
+static inline void timerfd_clock_was_set(void) { }
+#endif
extern void hrtimers_resume(void);
extern ktime_t ktime_get(void);