Commit 86174cdc authored Jan 08, 2006 by Oleg Nesterov Committed by Linus Torvalds Jan 08, 2006

[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: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus 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);

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