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| author | Anna-Maria Behnsen <anna-maria@linutronix.de> | 2024-10-09 10:29:12 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-10-25 19:49:15 +0200 |
| commit | 2cab490b41b28a4239baf810ca1bb1c9d6d017ca (patch) | |
| tree | e9e0d9cfa202e52f7d7e535ae4257cc6111a6d63 /kernel/time | |
| parent | 351619fc99883d22ba1018b5914ae717bfef4221 (diff) | |
| download | linux-2cab490b41b28a4239baf810ca1bb1c9d6d017ca.tar.gz linux-2cab490b41b28a4239baf810ca1bb1c9d6d017ca.tar.bz2 linux-2cab490b41b28a4239baf810ca1bb1c9d6d017ca.zip | |
timekeeping: Rework timekeeping_init() to use shadow_timekeeper
For timekeeping_init() the sequence count write held time is not relevant
and it could keep working on the real timekeeper, but there is no reason to
make it different from other timekeeper updates.
Convert it to operate on the shadow timekeeper.
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-v2-19-554456a44a15@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index f77782f557ce..4e0037d342d8 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -1809,7 +1809,7 @@ static bool persistent_clock_exists; void __init timekeeping_init(void) { struct timespec64 wall_time, boot_offset, wall_to_mono; - struct timekeeper *tk = &tk_core.timekeeper; + struct timekeeper *tks = &tk_core.shadow_timekeeper; struct clocksource *clock; tkd_basic_setup(&tk_core); @@ -1833,22 +1833,20 @@ void __init timekeeping_init(void) wall_to_mono = timespec64_sub(boot_offset, wall_time); guard(raw_spinlock_irqsave)(&tk_core.lock); - write_seqcount_begin(&tk_core.seq); + ntp_init(); clock = clocksource_default_clock(); if (clock->enable) clock->enable(clock); - tk_setup_internals(tk, clock); + tk_setup_internals(tks, clock); - tk_set_xtime(tk, &wall_time); - tk->raw_sec = 0; + tk_set_xtime(tks, &wall_time); + tks->raw_sec = 0; - tk_set_wall_to_mono(tk, wall_to_mono); + tk_set_wall_to_mono(tks, wall_to_mono); - timekeeping_update(&tk_core, tk, TK_MIRROR | TK_CLOCK_WAS_SET); - - write_seqcount_end(&tk_core.seq); + timekeeping_update_from_shadow(&tk_core, TK_CLOCK_WAS_SET); } /* time in seconds when suspend began for persistent clock */ |