timekeeping: Rework timekeeping_inject_sleeptime64() to use shadow_timekeeper

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Updates of the timekeeper can be done by operating on the shadow timekeeper
and afterwards copying the result into the real timekeeper. This has the
advantage, that the sequence count write protected region is kept as small
as possible.

Convert timekeeping_inject_sleeptime64() to use this scheme.

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-v2-20-554456a44a15@linutronix.de

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Anna-Maria Behnsen 2024-10-09 10:29:13 +02:00 • committed by Thomas Gleixner

parent 2cab490b41

commit 2b473e65de

1 changed files with 7 additions and 15 deletions

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kernel/time/timekeeping.c

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