diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2014-03-13 19:00:35 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-04-18 14:20:46 +0200 |
| commit | d00a569284b1340c16fe2c148099e077ea09ebc9 (patch) | |
| tree | 5e44a663929cdd1288989150ca9a7304a29cabd9 /arch/x86/include/asm/sync_bitops.h | |
| parent | ce3609f93445846f7b5a5b4bacb236a9bdc35216 (diff) | |
arch,x86: Convert smp_mb__*()
x86 is strongly ordered and all its atomic ops imply a full barrier.
Implement the two new primitives as the old ones were.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-knswsr5mldkr0w1lrdxvc81w@git.kernel.org
Cc: Dave Jones <davej@redhat.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/sync_bitops.h')
| -rw-r--r-- | arch/x86/include/asm/sync_bitops.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/sync_bitops.h b/arch/x86/include/asm/sync_bitops.h index 05af3b31d522..f28a24b51dc7 100644 --- a/arch/x86/include/asm/sync_bitops.h +++ b/arch/x86/include/asm/sync_bitops.h @@ -41,7 +41,7 @@ static inline void sync_set_bit(long nr, volatile unsigned long *addr) * * sync_clear_bit() is atomic and may not be reordered. However, it does * not contain a memory barrier, so if it is used for locking purposes, - * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit() + * you should call smp_mb__before_atomic() and/or smp_mb__after_atomic() * in order to ensure changes are visible on other processors. */ static inline void sync_clear_bit(long nr, volatile unsigned long *addr) |