| From 5b7ab64ba8e33ae73e5abb0fe5443ec35a4ba1d7 Mon Sep 17 00:00:00 2001 |
| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Fri, 3 Jul 2009 08:44:44 -0500 |
| Subject: [PATCH] signals: Do not wakeup self |
| |
| commit c0445b35154b777c8b4340c5930a1b2924a7f86f in tip. |
| |
| Signals which are delivered by current to current can do without |
| waking up current :) |
| |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| |
| diff --git a/kernel/signal.c b/kernel/signal.c |
| index 934ae5e..549df9d 100644 |
| --- a/kernel/signal.c |
| +++ b/kernel/signal.c |
| @@ -542,6 +542,9 @@ 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 |
| -- |
| 1.7.1.1 |
| |
