diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:31 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:31 +0200 |
| commit | 01215ad8d83e18321d99e9b5750a6f21cac243a2 (patch) | |
| tree | aad34bac0001d2b2788dcb5c68566372db7968c3 | |
| parent | 0577f148b5e9a773020e3da1e6332a7c6df9d601 (diff) | |
| download | linux-3.10-01215ad8d83e18321d99e9b5750a6f21cac243a2.tar.gz linux-3.10-01215ad8d83e18321d99e9b5750a6f21cac243a2.tar.bz2 linux-3.10-01215ad8d83e18321d99e9b5750a6f21cac243a2.zip | |
[PATCH] i386: Remove lock section support in mutex.h
Lock sections don't work the new dwarf2 unwinder
This generates slightly smaller code. It adds one more taken
jump to the fast path.
Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | include/asm-i386/mutex.h | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/include/asm-i386/mutex.h b/include/asm-i386/mutex.h index 05a53853122..7a17d9e58ad 100644 --- a/include/asm-i386/mutex.h +++ b/include/asm-i386/mutex.h @@ -30,14 +30,10 @@ do { \ \ __asm__ __volatile__( \ LOCK_PREFIX " decl (%%eax) \n" \ - " js 2f \n" \ + " jns 1f \n" \ + " call "#fail_fn" \n" \ "1: \n" \ \ - LOCK_SECTION_START("") \ - "2: call "#fail_fn" \n" \ - " jmp 1b \n" \ - LOCK_SECTION_END \ - \ :"=a" (dummy) \ : "a" (count) \ : "memory", "ecx", "edx"); \ @@ -86,14 +82,10 @@ do { \ \ __asm__ __volatile__( \ LOCK_PREFIX " incl (%%eax) \n" \ - " jle 2f \n" \ + " jg 1f \n" \ + " call "#fail_fn" \n" \ "1: \n" \ \ - LOCK_SECTION_START("") \ - "2: call "#fail_fn" \n" \ - " jmp 1b \n" \ - LOCK_SECTION_END \ - \ :"=a" (dummy) \ : "a" (count) \ : "memory", "ecx", "edx"); \ |