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arch,hexagon: Convert smp_mb__*()

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Hexagon uses asm-gemeric/barrier.h and its smp_mb() is barrier().
Therefore we can use the default implementation that uses smp_mb().

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-87irqrrbgizeojjfdqhypud3@git.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-hexagon@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2014-03-13 19:00:36 +01:00 committed by Ingo Molnar
parent d038c0e838
commit 94cf42f823
2 changed files with 2 additions and 8 deletions
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6
arch/hexagon/include/asm/atomic.h
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@ -24,6 +24,7 @@
#include <linux/types.h>
#include <asm/cmpxchg.h>
#include <asm/barrier.h>
#define ATOMIC_INIT(i) { (i) }
@ -176,9 +177,4 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
#define atomic_inc_return(v) (atomic_add_return(1, v))
#define atomic_dec_return(v) (atomic_sub_return(1, v))
#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

4
arch/hexagon/include/asm/bitops.h
View File

@ -25,12 +25,10 @@
#include <linux/compiler.h>
#include <asm/byteorder.h>
#include <asm/atomic.h>
#include <asm/barrier.h>
#ifdef __KERNEL__
#define smp_mb__before_clear_bit() barrier()
#define smp_mb__after_clear_bit() barrier()
/*
* The offset calculations for these are based on BITS_PER_LONG == 32
* (i.e. I get to shift by #5-2 (32 bits per long, 4 bytes per access),