posix-cpu-timers: Reset expire cache when no timer is running

When a process deletes cpu timer or a timer expires we do not clear
the expiration cache sig->cputimer_expires.

As a result the fastpath_timer_check() which prevents us to loop over
all threads in case no timer is active is not working and we run the
slow path needlessly on every tick.

Zero sig->cputimer_expires in stop_process_timers().

Signed-off-by: Stanislaw Gruszka <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Hidetoshi Seto <[email protected]>
Cc: Spencer Candland <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>

0 files changed, 0 insertions, 0 deletions