redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

[PATCH] i386: Remove lock section support in mutex.h

Browse source 
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>
This commit is contained in:
Andi Kleen 2006-09-26 10:52:31 +02:00 committed by Andi Kleen
parent 0577f148b5
commit 01215ad8d8
1 changed files with 4 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
include/asm-i386/mutex.h
View file

@ -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"); \