Commit 01215ad8 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
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[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: default avatarAndi Kleen <ak@suse.de>
parent 0577f148
...@@ -30,14 +30,10 @@ do { \ ...@@ -30,14 +30,10 @@ do { \
\ \
__asm__ __volatile__( \ __asm__ __volatile__( \
LOCK_PREFIX " decl (%%eax) \n" \ LOCK_PREFIX " decl (%%eax) \n" \
" js 2f \n" \ " jns 1f \n" \
" call "#fail_fn" \n" \
"1: \n" \ "1: \n" \
\ \
LOCK_SECTION_START("") \
"2: call "#fail_fn" \n" \
" jmp 1b \n" \
LOCK_SECTION_END \
\
:"=a" (dummy) \ :"=a" (dummy) \
: "a" (count) \ : "a" (count) \
: "memory", "ecx", "edx"); \ : "memory", "ecx", "edx"); \
...@@ -86,14 +82,10 @@ do { \ ...@@ -86,14 +82,10 @@ do { \
\ \
__asm__ __volatile__( \ __asm__ __volatile__( \
LOCK_PREFIX " incl (%%eax) \n" \ LOCK_PREFIX " incl (%%eax) \n" \
" jle 2f \n" \ " jg 1f \n" \
" call "#fail_fn" \n" \
"1: \n" \ "1: \n" \
\ \
LOCK_SECTION_START("") \
"2: call "#fail_fn" \n" \
" jmp 1b \n" \
LOCK_SECTION_END \
\
:"=a" (dummy) \ :"=a" (dummy) \
: "a" (count) \ : "a" (count) \
: "memory", "ecx", "edx"); \ : "memory", "ecx", "edx"); \
......
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