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| author | Michael S. Tsirkin <mst@redhat.com> | 2015-12-21 09:22:18 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-01-12 20:46:49 +0200 |
| commit | 335390d6096f647311980f50312b304b377e616f (patch) | |
| tree | 06a66800a9debaf96e7acf0912407a1b04a6f60e | |
| parent | 519be0438e6963b8efd2430e9d0595f5aeee915e (diff) | |
| download | lwn-335390d6096f647311980f50312b304b377e616f.tar.gz lwn-335390d6096f647311980f50312b304b377e616f.zip | |
arm: reuse asm-generic/barrier.h
On arm smp_store_mb, read_barrier_depends, smp_read_barrier_depends,
smp_store_release, smp_load_acquire, smp_mb__before_atomic and
smp_mb__after_atomic match the asm-generic variants exactly. Drop the
local definitions and pull in asm-generic/barrier.h instead.
This is in preparation to refactoring this code area.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
| -rw-r--r-- | arch/arm/include/asm/barrier.h | 23 |
1 files changed, 1 insertions, 22 deletions
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h index 3ff5642d9788..31152e8c7501 100644 --- a/arch/arm/include/asm/barrier.h +++ b/arch/arm/include/asm/barrier.h @@ -70,28 +70,7 @@ extern void arm_heavy_mb(void); #define smp_wmb() dmb(ishst) #endif -#define smp_store_release(p, v) \ -do { \ - compiletime_assert_atomic_type(*p); \ - smp_mb(); \ - WRITE_ONCE(*p, v); \ -} while (0) - -#define smp_load_acquire(p) \ -({ \ - typeof(*p) ___p1 = READ_ONCE(*p); \ - compiletime_assert_atomic_type(*p); \ - smp_mb(); \ - ___p1; \ -}) - -#define read_barrier_depends() do { } while(0) -#define smp_read_barrier_depends() do { } while(0) - -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) - -#define smp_mb__before_atomic() smp_mb() -#define smp_mb__after_atomic() smp_mb() +#include <asm-generic/barrier.h> #endif /* !__ASSEMBLY__ */ #endif /* __ASM_BARRIER_H */ |