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x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h>
author
H. Peter Anvin
<hpa@zytor.com>
Wed, 8 Jun 2016 19:38:44 +0000
(12:38 -0700)
committer
H. Peter Anvin
<hpa@linux.intel.com>
Wed, 8 Jun 2016 19:41:20 +0000
(12:41 -0700)
Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
<asm/rwsem.h>.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link:
http://lkml.kernel.org/r/1465414726-197858-9-git-send-email-hpa@linux.intel.com
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
arch/x86/include/asm/rwsem.h
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diff --git
a/arch/x86/include/asm/rwsem.h
b/arch/x86/include/asm/rwsem.h
index
c508770
..
1e8be26
100644
(file)
--- a/
arch/x86/include/asm/rwsem.h
+++ b/
arch/x86/include/asm/rwsem.h
@@
-149,10
+149,10
@@
static inline bool __down_write_trylock(struct rw_semaphore *sem)
LOCK_PREFIX " cmpxchg %2,%0\n\t"
" jnz 1b\n\t"
"2:\n\t"
- " sete %3\n\t"
+ CC_SET(e)
"# ending __down_write_trylock\n\t"
: "+m" (sem->count), "=&a" (tmp0), "=&r" (tmp1),
-
"=qm"
(result)
+
CC_OUT(e)
(result)
: "er" (RWSEM_ACTIVE_WRITE_BIAS)
: "memory", "cc");
return result;