[PATCH v2 08/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h>
From: H. Peter Anvin
Date: Wed Jun 08 2016 - 15:41:11 EST
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
<asm/rwsem.h>.
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
Reviewed-by: Andy Lutomirski <luto@xxxxxxxxxx>
Reviewed-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
arch/x86/include/asm/rwsem.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index c508770..1e8be26 100644
--- 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;
--
2.7.3.0.11.gd79db92