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timekeeping: Introduce tkd_basic_setup() to make lock and seqcount init reusable

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Initialization of lock and seqcount needs to be done for every instance of
timekeeper struct. To be able to easily reuse it, create a separate
function for it.

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-v2-11-554456a44a15@linutronix.de
This commit is contained in:
Anna-Maria Behnsen 2024-10-09 10:29:04 +02:00 committed by Thomas Gleixner
parent 10f7c178a9
commit a5f9e4e4ef
1 changed files with 7 additions and 2 deletions
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9
kernel/time/timekeeping.c
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@ -1765,6 +1765,12 @@ read_persistent_wall_and_boot_offset(struct timespec64 *wall_time,
*boot_offset = ns_to_timespec64(local_clock());
}
static __init void tkd_basic_setup(struct tk_data *tkd)
{
raw_spin_lock_init(&tkd->lock);
seqcount_raw_spinlock_init(&tkd->seq, &tkd->lock);
}
/*
* Flag reflecting whether timekeeping_resume() has injected sleeptime.
*
@ -1792,8 +1798,7 @@ void __init timekeeping_init(void)
struct timekeeper *tk = &tk_core.timekeeper;
struct clocksource *clock;
raw_spin_lock_init(&tk_core.lock);
seqcount_raw_spinlock_init(&tk_core.seq, &tkd->lock);
tkd_basic_setup(&tk_core);
read_persistent_wall_and_boot_offset(&wall_time, &boot_offset);
if (timespec64_valid_settod(&wall_time) &&