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authorWill Deacon <will.deacon@arm.com>2014-05-02 19:24:12 +0400
committerCatalin Marinas <catalin.marinas@arm.com>2014-05-09 20:03:52 +0400
commitbe6209a6107e0f63544e3e7d00fd5c95434ec80a (patch)
treedfddaa0fc846a8b2c1a833b4bf5252161fcb5b6e /arch/arm64/include/asm/barrier.h
parent493e68747e07b69da3d746352525a1ebd6b61d82 (diff)
downloadlinux-be6209a6107e0f63544e3e7d00fd5c95434ec80a.tar.xz
arm64: barriers: use barrier() instead of smp_mb() when !SMP
The recently introduced acquire/release accessors refer to smp_mb() in the !CONFIG_SMP case. This is confusing when reading the code, so use barrier() directly when we know we're UP. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/barrier.h')
-rw-r--r--arch/arm64/include/asm/barrier.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 71a42d6599fb..709f1f6d6bbd 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -40,7 +40,7 @@
#define smp_store_release(p, v) \
do { \
compiletime_assert_atomic_type(*p); \
- smp_mb(); \
+ barrier(); \
ACCESS_ONCE(*p) = (v); \
} while (0)
@@ -48,7 +48,7 @@ do { \
({ \
typeof(*p) ___p1 = ACCESS_ONCE(*p); \
compiletime_assert_atomic_type(*p); \
- smp_mb(); \
+ barrier(); \
___p1; \
})