The following commit has been merged into the timers/core branch of tip: Commit-ID: 708573a8f75ec94e9063d6c47e0571bcf39f0bb0 Gitweb: https://git.kernel.org/tip/708573a8f75ec94e9063d6c47e0571bcf39f0bb0 Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Wed, 09 Oct 2024 10:28:55 +02:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Fri, 25 Oct 2024 16:41:11 +02:00 timekeeping: Don't stop time readers across hard_pps() update From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> hard_pps() update does not modify anything which might be required by time readers so forcing readers out of the way during the update is a pointless exercise. The interaction with adjtimex() and timekeeper updates which call into the NTP code is properly serialized by timekeeper_lock. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/all/20241009-devel-anna-maria-b4-timers-ptp-timekeeping-v2-2-554456a44a15@xxxxxxxxxxxxx --- kernel/time/timekeeping.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 2bc3542..ff98a0b 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -2746,11 +2746,7 @@ void hardpps(const struct timespec64 *phase_ts, const struct timespec64 *raw_ts) unsigned long flags; raw_spin_lock_irqsave(&timekeeper_lock, flags); - write_seqcount_begin(&tk_core.seq); - __hardpps(phase_ts, raw_ts); - - write_seqcount_end(&tk_core.seq); raw_spin_unlock_irqrestore(&timekeeper_lock, flags); } EXPORT_SYMBOL(hardpps);
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