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| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-07-13 15:39:50 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-08-10 17:57:22 +0200 |
| commit | 66f7b0c8aadd2785fc29f2c71477ebc16f4e38cc (patch) | |
| tree | 9a248c6ed85efc63d1299653de76991c7f280d2a /include/linux/hrtimer.h | |
| parent | hrtimer: Force clock_was_set() handling for the HIGHRES=n, NOHZ=y case (diff) | |
| download | wireguard-linux-66f7b0c8aadd2785fc29f2c71477ebc16f4e38cc.tar.xz wireguard-linux-66f7b0c8aadd2785fc29f2c71477ebc16f4e38cc.zip | |
timerfd: Provide timerfd_resume()
Resuming timekeeping is a clock-was-set event and uses the clock-was-set
notification mechanism. This is in the way of making the clock-was-set
update for hrtimers selective so unnecessary IPIs are avoided when a CPU
base does not have timers queued which are affected by the clock setting.
Provide a seperate timerfd_resume() interface so the resume logic and the
clock-was-set mechanism can be distangled in the core code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210713135158.395287410@linutronix.de
Diffstat (limited to 'include/linux/hrtimer.h')
| -rw-r--r-- | include/linux/hrtimer.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 77295af72426..253c6e25f331 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -349,8 +349,10 @@ hrtimer_expires_remaining_adjusted(const struct hrtimer *timer) #ifdef CONFIG_TIMERFD extern void timerfd_clock_was_set(void); +extern void timerfd_resume(void); #else static inline void timerfd_clock_was_set(void) { } +static inline void timerfd_resume(void) { } #endif extern void hrtimers_resume(void); |