diff options
| author | Gerd Hoffmann <kraxel@suse.de> | 2006-06-26 13:56:16 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 10:48:14 -0700 |
| commit | d167a51877e94dda73dd656c51f363502309f713 (patch) | |
| tree | eb02c2974b61777f575dfdc07d4c2adf83bde434 /include/asm-x86_64/bitops.h | |
| parent | 240cd6a80642da528bfa382ec2ae4e3cb8991ea7 (diff) | |
| download | linux-d167a51877e94dda73dd656c51f363502309f713.tar.gz | |
[PATCH] x86_64: x86_64 version of the smp alternative patch.
Changes are largely identical to the i386 version:
* alternative #define are moved to the new alternative.h file.
* one new elf section with pointers to the lock prefixes which can be
nop'ed out for non-smp.
* two new elf sections simliar to the "classic" alternatives to
replace SMP code with simpler UP code.
* fixup headers to use alternative.h instead of defining their own
LOCK / LOCK_PREFIX macros.
The patch reuses the i386 version of the alternatives code to avoid code
duplication. The code in alternatives.c was shuffled around a bit to
reduce the number of #ifdefs needed. It also got some tweaks needed for
x86_64 (vsyscall page handling) and new features (noreplacement option
which was x86_64 only up to now). Debug printk's are changed from
compile-time to runtime.
Loosely based on a early version from Bastian Blank <waldi@debian.org>
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/bitops.h')
| -rw-r--r-- | include/asm-x86_64/bitops.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/include/asm-x86_64/bitops.h b/include/asm-x86_64/bitops.h index e9bf933d25d0a..f7ba57b1cc085 100644 --- a/include/asm-x86_64/bitops.h +++ b/include/asm-x86_64/bitops.h @@ -5,12 +5,7 @@ * Copyright 1992, Linus Torvalds. */ - -#ifdef CONFIG_SMP -#define LOCK_PREFIX "lock ; " -#else -#define LOCK_PREFIX "" -#endif +#include <asm/alternative.h> #define ADDR (*(volatile long *) addr) |