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arch,arc: Convert smp_mb__*()

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The arc mb() implementation is a compiler barrier(), therefore it all
doesn't matter one way or the other. Simply remove the existing
definitions and use whatever is generated by the defaults.

Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Cc: Linus Torvalds <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2014-03-12 17:11:00 +01:00 • committed by Ingo Molnar
commit d594ffa94b
2 changed files with 1 additions and 9 deletions
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5
arch/arc/include/asm/atomic.h
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@ -190,11 +190,6 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
#endif /* !CONFIG_ARC_HAS_LLSC */
#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()
/**
* __atomic_add_unless - add unless the number is a given value
* @v: pointer of type atomic_t

5
arch/arc/include/asm/bitops.h
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@ -19,6 +19,7 @@
#include <linux/types.h>
#include <linux/compiler.h>
#include <asm/barrier.h>
/*
* Hardware assisted read-modify-write using ARC700 LLOCK/SCOND insns.
@ -496,10 +497,6 @@ static inline __attribute__ ((const)) int __ffs(unsigned long word)
*/
#define ffz(x) __ffs(~(x))
/* TODO does this affect uni-processor code */
#define smp_mb__before_clear_bit() barrier()
#define smp_mb__after_clear_bit() barrier()
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/sched.h>