diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/tile/include/asm/atomic_32.h | 10 | ||||
| -rw-r--r-- | arch/tile/include/asm/atomic_64.h | 6 | ||||
| -rw-r--r-- | arch/tile/include/asm/barrier.h | 14 | ||||
| -rw-r--r-- | arch/tile/include/asm/bitops.h | 1 | ||||
| -rw-r--r-- | arch/tile/include/asm/bitops_32.h | 8 | ||||
| -rw-r--r-- | arch/tile/include/asm/bitops_64.h | 4 |
6 files changed, 17 insertions, 26 deletions
diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h index 1ad4a1f7d42b..1b109fad9fff 100644 --- a/arch/tile/include/asm/atomic_32.h +++ b/arch/tile/include/asm/atomic_32.h @@ -169,16 +169,6 @@ static inline void atomic64_set(atomic64_t *v, long long n) #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) -/* - * We need to barrier before modifying the word, since the _atomic_xxx() - * routines just tns the lock and then read/modify/write of the word. - * But after the word is updated, the routine issues an "mf" before returning, - * and since it's a function call, we don't even need a compiler barrier. - */ -#define smp_mb__before_atomic_dec() smp_mb() -#define smp_mb__before_atomic_inc() smp_mb() -#define smp_mb__after_atomic_dec() do { } while (0) -#define smp_mb__after_atomic_inc() do { } while (0) #endif /* !__ASSEMBLY__ */ diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h index ad220eed05fc..7b11c5fadd42 100644 --- a/arch/tile/include/asm/atomic_64.h +++ b/arch/tile/include/asm/atomic_64.h @@ -105,12 +105,6 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) -/* Atomic dec and inc don't implement barrier, so provide them if needed. */ -#define smp_mb__before_atomic_dec() smp_mb() -#define smp_mb__after_atomic_dec() smp_mb() -#define smp_mb__before_atomic_inc() smp_mb() -#define smp_mb__after_atomic_inc() smp_mb() - /* Define this to indicate that cmpxchg is an efficient operation. */ #define __HAVE_ARCH_CMPXCHG diff --git a/arch/tile/include/asm/barrier.h b/arch/tile/include/asm/barrier.h index b5a05d050a8f..96a42ae79f4d 100644 --- a/arch/tile/include/asm/barrier.h +++ b/arch/tile/include/asm/barrier.h @@ -72,6 +72,20 @@ mb_incoherent(void) #define mb() fast_mb() #define iob() fast_iob() +#ifndef __tilegx__ /* 32 bit */ +/* + * We need to barrier before modifying the word, since the _atomic_xxx() + * routines just tns the lock and then read/modify/write of the word. + * But after the word is updated, the routine issues an "mf" before returning, + * and since it's a function call, we don't even need a compiler barrier. + */ +#define smp_mb__before_atomic() smp_mb() +#define smp_mb__after_atomic() do { } while (0) +#else /* 64 bit */ +#define smp_mb__before_atomic() smp_mb() +#define smp_mb__after_atomic() smp_mb() +#endif + #include <asm-generic/barrier.h> #endif /* !__ASSEMBLY__ */ diff --git a/arch/tile/include/asm/bitops.h b/arch/tile/include/asm/bitops.h index d5a206865036..20caa346ac06 100644 --- a/arch/tile/include/asm/bitops.h +++ b/arch/tile/include/asm/bitops.h @@ -17,6 +17,7 @@ #define _ASM_TILE_BITOPS_H #include <linux/types.h> +#include <asm/barrier.h> #ifndef _LINUX_BITOPS_H #error only <linux/bitops.h> can be included directly diff --git a/arch/tile/include/asm/bitops_32.h b/arch/tile/include/asm/bitops_32.h index 386865ad2f55..bbf7b666f21d 100644 --- a/arch/tile/include/asm/bitops_32.h +++ b/arch/tile/include/asm/bitops_32.h @@ -49,8 +49,8 @@ static inline void set_bit(unsigned nr, volatile unsigned long *addr) * restricted to acting on a single-word quantity. * * clear_bit() may 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() to ensure changes are visible on other cpus. + * locking purposes, you should call smp_mb__before_atomic() and/or + * smp_mb__after_atomic() to ensure changes are visible on other cpus. */ static inline void clear_bit(unsigned nr, volatile unsigned long *addr) { @@ -121,10 +121,6 @@ static inline int test_and_change_bit(unsigned nr, return (_atomic_xor(addr, mask) & mask) != 0; } -/* See discussion at smp_mb__before_atomic_dec() in <asm/atomic_32.h>. */ -#define smp_mb__before_clear_bit() smp_mb() -#define smp_mb__after_clear_bit() do {} while (0) - #include <asm-generic/bitops/ext2-atomic.h> #endif /* _ASM_TILE_BITOPS_32_H */ diff --git a/arch/tile/include/asm/bitops_64.h b/arch/tile/include/asm/bitops_64.h index ad34cd056085..bb1a29221fcd 100644 --- a/arch/tile/include/asm/bitops_64.h +++ b/arch/tile/include/asm/bitops_64.h @@ -32,10 +32,6 @@ static inline void clear_bit(unsigned nr, volatile unsigned long *addr) __insn_fetchand((void *)(addr + nr / BITS_PER_LONG), ~mask); } -#define smp_mb__before_clear_bit() smp_mb() -#define smp_mb__after_clear_bit() smp_mb() - - static inline void change_bit(unsigned nr, volatile unsigned long *addr) { unsigned long mask = (1UL << (nr % BITS_PER_LONG)); |