diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-09-22 14:42:51 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-09-24 15:45:48 +0200 |
| commit | 31d9284569e38fb97117497af3e8047a6a3c86f0 (patch) | |
| tree | a11b497fd51bdb01f42451e883a4617da3ef1d09 /kernel/posix-timers.c | |
| parent | 5a51b713ccf8835d5adf7217e2f86eb12b1ca851 (diff) | |
| download | linux-31d9284569e38fb97117497af3e8047a6a3c86f0.tar.bz2 | |
posix-timers: lock_timer: make it readable
Cleanup. Imho makes the code much more understandable. At least this
patch lessens both the source and compiled code.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: mingo@elte.hu
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/posix-timers.c')
| -rw-r--r-- | kernel/posix-timers.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index 7185f05d53a9..95451bf7d2eb 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -556,7 +556,7 @@ out: * the find to the timer lock. To avoid a dead lock, the timer id MUST * be release with out holding the timer lock. */ -static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags) +static struct k_itimer *lock_timer(timer_t timer_id, unsigned long *flags) { struct k_itimer *timr; /* @@ -564,23 +564,20 @@ static struct k_itimer * lock_timer(timer_t timer_id, unsigned long *flags) * flags part over to the timer lock. Must not let interrupts in * while we are moving the lock. */ - spin_lock_irqsave(&idr_lock, *flags); - timr = idr_find(&posix_timers_id, (int) timer_id); + timr = idr_find(&posix_timers_id, (int)timer_id); if (timr) { spin_lock(&timr->it_lock); - - if (!timr->it_process || - !same_thread_group(timr->it_process, current)) { - spin_unlock(&timr->it_lock); - spin_unlock_irqrestore(&idr_lock, *flags); - timr = NULL; - } else + if (timr->it_process && + same_thread_group(timr->it_process, current)) { spin_unlock(&idr_lock); - } else - spin_unlock_irqrestore(&idr_lock, *flags); + return timr; + } + spin_unlock(&timr->it_lock); + } + spin_unlock_irqrestore(&idr_lock, *flags); - return timr; + return NULL; } /* |