From d593d9a98592b53916884a81482f8102d7d591cf Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:44 -0500 Subject: [020/256] signals: Do not wakeup self Signals which are delivered by current to current can do without waking up current :) Signed-off-by: Thomas Gleixner --- kernel/signal.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index 6b5071f..099746c 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -683,6 +683,9 @@ void signal_wake_up(struct task_struct *t, int resume) set_tsk_thread_flag(t, TIF_SIGPENDING); + if (unlikely(t == current)) + return; + /* * For SIGKILL, we want to wake it up in the stopped/traced/killable * case. We don't check t->state here because there is a race with it