[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>
diff --git a/include/asm-i386/mutex.h b/include/asm-i386/mutex.h
index 05a5385..7a17d9e 100644
--- a/include/asm-i386/mutex.h
+++ b/include/asm-i386/mutex.h
@@ -30,14 +30,10 @@
\
__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 @@
\
__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"); \