xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arm64: asm: remove redundant "cc" clobbers

Browse Source 
cbnz/tbnz don't update the condition flags, so remove the "cc" clobbers
from inline asm blocks that only use these instructions to implement
conditional branches.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon
2014-02-04 12:29:13 +00:00
committed by Catalin Marinas
parent 8e86f0b409
commit 95c4189689
4 changed files with 21 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm64/include/asm/futex.h
View File

@@ -41,7 +41,7 @@
" .popsection\n" \
: "=&r" (ret), "=&r" (oldval), "+Q" (*uaddr), "=&r" (tmp) \
: "r" (oparg), "Ir" (-EFAULT) \
: "cc", "memory")
: "memory")
static inline int
futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
@@ -129,7 +129,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
" .popsection\n"
: "+r" (ret), "=&r" (val), "+Q" (*uaddr), "=&r" (tmp)
: "r" (oldval), "r" (newval), "Ir" (-EFAULT)
: "cc", "memory");
: "memory");
*uval = val;
return ret;