posix-timers: check ->it_signal instead of ->it_pid to validate the timer

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Impact: clean up, speed up

->it_pid (was ->it_process) has also a special meaning: if it is NULL,
the timer is under deletion or it wasn't initialized yet. We can check
->it_signal != NULL instead, this way we can

	- simplify sys_timer_create() a bit

	- remove yet another check from lock_timer()

	- move put_pid(->it_pid) into release_posix_timer() which
	  runs outside of ->it_lock

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

...

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Oleg Nesterov 2008-12-01 14:18:15 -08:00 • committed by Ingo Molnar

parent 27af4245b6

commit 899921025b

1 changed files with 7 additions and 10 deletions

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kernel/posix-timers.c

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