]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
clockevents: Add missing resets of the next_event_forced flag
authorThomas Gleixner <tglx@kernel.org>
Tue, 14 Apr 2026 20:55:01 +0000 (22:55 +0200)
committerThomas Gleixner <tglx@kernel.org>
Thu, 16 Apr 2026 19:22:04 +0000 (21:22 +0200)
commit4096fd0e8eaea13ebe5206700b33f49635ae18e5
treedce5f4f328ff5a081a108b6fdf5402cbf6a9ae7d
parent1d51b370a0f8f642f4fc84c795fbedac0fcdbbd2
clockevents: Add missing resets of the next_event_forced flag

The prevention mechanism against timer interrupt starvation missed to reset
the next_event_forced flag in a couple of places:

    - When the clock event state changes. That can cause the flag to be
      stale over a shutdown/startup sequence

    - When a non-forced event is armed, which then prevents rearming before
      that event. If that event is far out in the future this will cause
      missed timer interrupts.

    - In the suspend wakeup handler.

That led to stalls which have been reported by several people.

Add the missing resets, which fixes the problems for the reporters.

Fixes: d6e152d905bd ("clockevents: Prevent timer interrupt starvation")
Reported-by: Hanabishi <i.r.e.c.c.a.k.u.n+kernel.org@gmail.com>
Reported-by: Eric Naim <dnaim@cachyos.org>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Hanabishi <i.r.e.c.c.a.k.u.n+kernel.org@gmail.com>
Tested-by: Eric Naim <dnaim@cachyos.org>
Cc: stable@vger.kernel.org
Closes: https://lore.kernel.org/68d1e9ac-2780-4be3-8ee3-0788062dd3a4@gmail.com
Link: https://patch.msgid.link/87340xfeje.ffs@tglx
kernel/time/clockevents.c
kernel/time/tick-broadcast.c