diff options
| author |   Peter Zijlstra <peterz@infradead.org> | 2014-03-13 19:00:36 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2014-04-18 14:20:38 +0200 |
| commit | 40074dece684fc61ab72cfc1689d564cba1c5f64 (patch) | |
| tree | eb37370f63886527763387fb675f556e399cf107 /arch/metag | |
| parent | arch,m68k: Convert smp_mb__*() (diff) | |
| download | linux-dev-40074dece684fc61ab72cfc1689d564cba1c5f64.tar.xz linux-dev-40074dece684fc61ab72cfc1689d564cba1c5f64.zip | |
arch,metag: Convert smp_mb__*()
Implement the new barriers; as per the old versions the metag atomic
imply a full barrier.
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-dqnyo215kq38wi4xcxnbpjw3@git.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/metag')
| -rw-r--r-- | arch/metag/include/asm/atomic.h | 6 | ||||
| -rw-r--r-- | arch/metag/include/asm/barrier.h | 3 | ||||
| -rw-r--r-- | arch/metag/include/asm/bitops.h | 6 |
3 files changed, 4 insertions, 11 deletions
diff --git a/arch/metag/include/asm/atomic.h b/arch/metag/include/asm/atomic.h index 307ecd2bd9a1..470e365f04ea 100644 --- a/arch/metag/include/asm/atomic.h +++ b/arch/metag/include/asm/atomic.h @@ -4,6 +4,7 @@ #include <linux/compiler.h> #include <linux/types.h> #include <asm/cmpxchg.h> +#include <asm/barrier.h> #if defined(CONFIG_METAG_ATOMICITY_IRQSOFF) /* The simple UP case. */ @@ -39,11 +40,6 @@ #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) -#define smp_mb__before_atomic_dec() barrier() -#define smp_mb__after_atomic_dec() barrier() -#define smp_mb__before_atomic_inc() barrier() -#define smp_mb__after_atomic_inc() barrier() - #endif #define atomic_dec_if_positive(v) atomic_sub_if_positive(1, v) diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h index 5d6b4b407dda..d1768c6f5b18 100644 --- a/arch/metag/include/asm/barrier.h +++ b/arch/metag/include/asm/barrier.h @@ -97,4 +97,7 @@ do { \ ___p1; \ }) +#define smp_mb__before_atomic() barrier() +#define smp_mb__after_atomic() barrier() + #endif /* _ASM_METAG_BARRIER_H */ diff --git a/arch/metag/include/asm/bitops.h b/arch/metag/include/asm/bitops.h index c0d0df0d1378..2671134ee745 100644 --- a/arch/metag/include/asm/bitops.h +++ b/arch/metag/include/asm/bitops.h @@ -5,12 +5,6 @@ #include <asm/barrier.h> #include <asm/global_lock.h> -/* - * clear_bit() doesn't provide any barrier for the compiler. - */ -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() - #ifdef CONFIG_SMP /* * These functions are the basis of our bit ops. |