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From 79159b5b411d47d02fb7541b694f8c5ab977704c 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>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
kernel/signal.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kernel/signal.c b/kernel/signal.c
index dbd7fe0..5967e7c 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -559,6 +559,9 @@ 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
--
1.7.0.4
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