timekeeping: Encapsulate locking/unlocking of timekeeper_lock

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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

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This commit is contained in:

Thomas Gleixner 2024-10-09 10:29:01 +02:00

parent 20c7b582e8

commit dbdcf8c4ca

3 changed files with 18 additions and 5 deletions

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15

kernel/time/timekeeping.c

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3

kernel/time/timekeeping_internal.h

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5

kernel/time/vsyscall.c

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