diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2024-10-09 10:29:01 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-10-25 19:49:13 +0200 |
| commit | dbdcf8c4caeca8192daa43429ccf23a1feec126c (patch) | |
| tree | fa12b450e492f5ab61e326961c041c634fa22f06 /kernel/time/timekeeping_internal.h | |
| parent | 20c7b582e88b8a72832637cd1754e5622aa8a92d (diff) | |
timekeeping: Encapsulate locking/unlocking of timekeeper_lock
timekeeper_lock protects updates of timekeeper (tk_core). It is also used
by vdso_update_begin/end() and not only internally by the timekeeper code.
As long as there is only a single timekeeper, this works fine. But when
the timekeeper infrastructure will be reused for per ptp clock timekeepers,
timekeeper_lock needs to be part of tk_core..
Therefore encapuslate locking/unlocking of timekeeper_lock and make the
lock static.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/all/20241009-devel-anna-maria-b4-timers-ptp-timekeeping-v2-8-554456a44a15@linutronix.de
Diffstat (limited to 'kernel/time/timekeeping_internal.h')
| -rw-r--r-- | kernel/time/timekeeping_internal.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/time/timekeeping_internal.h b/kernel/time/timekeeping_internal.h index 0bbae825bc02..b3dca834f48c 100644 --- a/kernel/time/timekeeping_internal.h +++ b/kernel/time/timekeeping_internal.h @@ -49,6 +49,7 @@ static inline u64 clocksource_delta(u64 now, u64 last, u64 mask) #endif /* Semi public for serialization of non timekeeper VDSO updates. */ -extern raw_spinlock_t timekeeper_lock; +unsigned long timekeeper_lock_irqsave(void); +void timekeeper_unlock_irqrestore(unsigned long flags); #endif /* _TIMEKEEPING_INTERNAL_H */ |