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| author |   Peter Zijlstra <peterz@infradead.org> | 2015-05-12 10:52:27 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2015-05-19 08:31:59 +0200 |
| commit | ab3f02fc237211f0583c1e7ba3bf504747be9b8d (patch) | |
| tree | c859733055aed0ba98fcd4e6d3f160a86deb7d8c /arch/metag | |
| parent | rtmutex: Warn if trylock is called from hard/softirq context (diff) | |
| download | linux-dev-ab3f02fc237211f0583c1e7ba3bf504747be9b8d.tar.xz linux-dev-ab3f02fc237211f0583c1e7ba3bf504747be9b8d.zip | |
locking/arch: Add WRITE_ONCE() to set_mb()
Since we assume set_mb() to result in a single store followed by a
full memory barrier, employ WRITE_ONCE().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/metag')
| -rw-r--r-- | arch/metag/include/asm/barrier.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h index d703d8e26a65..97eb018a2933 100644 --- a/arch/metag/include/asm/barrier.h +++ b/arch/metag/include/asm/barrier.h @@ -84,7 +84,7 @@ static inline void fence(void) #define read_barrier_depends() do { } while (0) #define smp_read_barrier_depends() do { } while (0) -#define set_mb(var, value) do { var = value; smp_mb(); } while (0) +#define set_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) #define smp_store_release(p, v) \ do { \ |