From: Harvey Harrison <harvey.harrison@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>
Subject: [RFC-PATCH] x86: really use __builtin_memcmp on x86_32
Date: Sun, 09 Nov 2008 22:12:23 -0800 [thread overview]
Message-ID: <1226297544.5478.26.camel@brick> (raw)
Impact: prevent generic code from overriding __builtin_memcmp
lib/string.c was using a generic implementation of memcmp
because __HAVE_ARCH_MEMCMP was not defined and it was then doing
#undef memcmp and defining a generic version.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
---
arch/x86/include/asm/string_32.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/string_32.h b/arch/x86/include/asm/string_32.h
index c86f452..b671baf 100644
--- a/arch/x86/include/asm/string_32.h
+++ b/arch/x86/include/asm/string_32.h
@@ -195,6 +195,7 @@ static inline void *__memcpy3d(void *to, const void *from, size_t len)
#define __HAVE_ARCH_MEMMOVE
void *memmove(void *dest, const void *src, size_t n);
+#define __HAVE_ARCH_MEMCMP
#define memcmp __builtin_memcmp
#define __HAVE_ARCH_MEMCHR
--
1.6.0.3.866.gc189b
next reply other threads:[~2008-11-10 6:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-10 6:12 Harvey Harrison [this message]
2008-11-10 7:45 ` [RFC-PATCH] x86: really use __builtin_memcmp on x86_32 Ingo Molnar
2008-11-10 8:05 ` Ingo Molnar
2008-11-10 16:53 ` Harvey Harrison
2008-11-10 8:38 ` Andi Kleen
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