28 lines
837 B
Diff
28 lines
837 B
Diff
From 184153eb2296afaa1476309dd606c9ab6bd49a46 Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Fri, 3 Jul 2009 08:44:44 -0500
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Subject: [020/254] signals: Do not wakeup self
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Signals which are delivered by current to current can do without
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waking up current :)
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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kernel/signal.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/kernel/signal.c b/kernel/signal.c
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index 6b5071f..099746c 100644
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--- a/kernel/signal.c
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+++ b/kernel/signal.c
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@@ -683,6 +683,9 @@ void signal_wake_up(struct task_struct *t, int resume)
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set_tsk_thread_flag(t, TIF_SIGPENDING);
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+ if (unlikely(t == current))
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+ return;
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+
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/*
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* For SIGKILL, we want to wake it up in the stopped/traced/killable
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* case. We don't check t->state here because there is a race with it
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