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From: Roel Kluin <12o3l@tiscali.nl>
To: Thomas Gleixner <tglx@linutronix.de>, mingo@redhat.com, hpa@zytor.com
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] [x86] arch/x86/kernel/signal_32.c: replace !likely(x) by likely(!x)
Date: Sat, 16 Feb 2008 20:56:36 +0100	[thread overview]
Message-ID: <47B73FF4.6000804@tiscali.nl> (raw)
In-Reply-To: <47B73963.1050702@tiscali.nl>

Roel Kluin wrote:
> Roel Kluin wrote:
>> Replace !likely(x) by likely(!x)

> sorry, please ignore this patch

The patch below shouldn't change semantics.
---
replace !likely(x) by unlikely(!x)

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index caee1f0..c0fb075 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -303,7 +303,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
 	 * If we are on the alternate signal stack and would overflow it, don't.
 	 * Return an always-bogus address instead so we will die with SIGSEGV.
 	 */
-	if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size)))
+	if (on_sig_stack(sp) && unlikely(!on_sig_stack(sp - frame_size)))
 		return (void __user *) -1L;
 
 	/* This is the X/Open sanctioned signal stack switching.  */

  reply	other threads:[~2008-02-16 19:57 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-16 15:50 [PATCH 1/2] [x86] arch/x86/kernel/signal_32.c: replace !likely(x) by likely(!x) Roel Kluin
2008-02-16 19:28 ` Roel Kluin
2008-02-16 19:56   ` Roel Kluin [this message]
2008-02-17 16:23     ` Ingo Molnar

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