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Commit 86174cdc authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
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[PATCH] remove unneeded sig->curr_target recalculation 



This patch removes unneeded sig->curr_target recalculation under 'if
(atomic_dec_and_test(&sig->count))' in __exit_signal().

When sig->count == 0 the signal can't be sent to this task and
next_thread(tsk) == tsk anyway.

Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 08efd10e

kernel/signal.c

+0 −2
Original line number Diff line number Diff line
@@ -364,8 +364,6 @@ void __exit_signal(struct task_struct *tsk) 
	posix_cpu_timers_exit(tsk);

	if (atomic_dec_and_test(&sig->count)) {

		posix_cpu_timers_exit_group(tsk);

		if (tsk == sig->curr_target)

			sig->curr_target = next_thread(tsk);

		tsk->signal = NULL;

		__exit_sighand(tsk);

		spin_unlock(&sighand->siglock);