From: Oleg Nesterov <oleg@tv-sign.ru>
To: linux-kernel@vger.kernel.org
Cc: Roland McGrath <roland@redhat.com>, Andrew Morton <akpm@osdl.org>
Subject: [PATCH] remove unneeded sig->curr_target recalculation
Date: Sun, 27 Nov 2005 21:09:07 +0300 [thread overview]
Message-ID: <4389F643.A1842927@tv-sign.ru> (raw)
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>
--- 2.6.15-rc2/kernel/signal.c~ 2005-11-23 19:17:35.000000000 +0300
+++ 2.6.15-rc2/kernel/signal.c 2005-11-27 22:50:46.000000000 +0300
@@ -355,8 +355,6 @@ void __exit_signal(struct task_struct *t
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;
spin_unlock(&sighand->siglock);
flush_sigqueue(&sig->shared_pending);
reply other threads:[~2005-11-27 16:54 UTC|newest]
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