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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-06-21 16:36:43 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-06-22 12:14:22 +0200 |
| commit | 7586addb99322faf4d096fc8beb140f879409212 (patch) | |
| tree | fad9f446eebe6924933f0f05e15cacd6eac7ee69 /kernel/time | |
| parent | 12063d431078be73d11cb5e48a17c6db5f0d8254 (diff) | |
| download | linux-7586addb99322faf4d096fc8beb140f879409212.tar.bz2 | |
posix-timers: Use spin_lock_irq() in itimer_delete()
itimer_delete() uses spin_lock_irqsave() to obtain a `flags' variable
which can then be passed to unlock_timer(). It uses already spin_lock
locking for the structure instead of lock_timer() because it has a timer
which can not be removed by others at this point. The cleanup is always
performed with enabled interrupts.
Use spin_lock_irq() / spin_unlock_irq() so the `flags' variable can be
removed.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190621143643.25649-3-bigeasy@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/posix-timers.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index caa63e58e3d8..d7f2d91acdac 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -980,18 +980,16 @@ retry_delete: */ static void itimer_delete(struct k_itimer *timer) { - unsigned long flags; - retry_delete: - spin_lock_irqsave(&timer->it_lock, flags); + spin_lock_irq(&timer->it_lock); if (timer_delete_hook(timer) == TIMER_RETRY) { - unlock_timer(timer, flags); + spin_unlock_irq(&timer->it_lock); goto retry_delete; } list_del(&timer->list); - unlock_timer(timer, flags); + spin_unlock_irq(&timer->it_lock); release_posix_timer(timer, IT_ID_SET); } |