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| author | Peter Zijlstra <peterz@infradead.org> | 2014-04-23 19:53:39 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-07-27 14:06:22 +0200 |
| commit | 5b4a2f0f91fd4a635f380f847254d23121972e7b (patch) | |
| tree | 25e9a06f8d5dd9aa630456ea5fbf879abe508412 | |
| parent | 74b1bc505b058efdfef33e775df68d8324bbf8b8 (diff) | |
| download | lwn-5b4a2f0f91fd4a635f380f847254d23121972e7b.tar.gz lwn-5b4a2f0f91fd4a635f380f847254d23121972e7b.zip | |
metag: Provide atomic_{or,xor,and}
Implement atomic logic ops -- atomic_{or,xor,and}.
These will replace the atomic_{set,clear}_mask functions that are
available on some archs.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/metag/include/asm/atomic_lnkget.h | 38 | ||||
| -rw-r--r-- | arch/metag/include/asm/atomic_lock1.h | 21 |
2 files changed, 17 insertions, 42 deletions
diff --git a/arch/metag/include/asm/atomic_lnkget.h b/arch/metag/include/asm/atomic_lnkget.h index 948d8688643c..930c12cb8d37 100644 --- a/arch/metag/include/asm/atomic_lnkget.h +++ b/arch/metag/include/asm/atomic_lnkget.h @@ -74,42 +74,24 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ ATOMIC_OPS(add) ATOMIC_OPS(sub) +#define CONFIG_ARCH_HAS_ATOMIC_OR + +ATOMIC_OP(and) +ATOMIC_OP(or) +ATOMIC_OP(xor) + #undef ATOMIC_OPS #undef ATOMIC_OP_RETURN #undef ATOMIC_OP -static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v) { - int temp; - - asm volatile ( - "1: LNKGETD %0, [%1]\n" - " AND %0, %0, %2\n" - " LNKSETD [%1] %0\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - : "=&d" (temp) - : "da" (&v->counter), "bd" (~mask) - : "cc"); + atomic_and(~mask, v); } -static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v) { - int temp; - - asm volatile ( - "1: LNKGETD %0, [%1]\n" - " OR %0, %0, %2\n" - " LNKSETD [%1], %0\n" - " DEFR %0, TXSTAT\n" - " ANDT %0, %0, #HI(0x3f000000)\n" - " CMPT %0, #HI(0x02000000)\n" - " BNZ 1b\n" - : "=&d" (temp) - : "da" (&v->counter), "bd" (mask) - : "cc"); + atomic_or(mask, v); } static inline int atomic_cmpxchg(atomic_t *v, int old, int new) diff --git a/arch/metag/include/asm/atomic_lock1.h b/arch/metag/include/asm/atomic_lock1.h index f5d5898c1020..7d88725a85da 100644 --- a/arch/metag/include/asm/atomic_lock1.h +++ b/arch/metag/include/asm/atomic_lock1.h @@ -68,29 +68,22 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ ATOMIC_OPS(add, +=) ATOMIC_OPS(sub, -=) +ATOMIC_OP(and, &=) +ATOMIC_OP(or, |=) +ATOMIC_OP(xor, ^=) #undef ATOMIC_OPS #undef ATOMIC_OP_RETURN #undef ATOMIC_OP -static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v) { - unsigned long flags; - - __global_lock1(flags); - fence(); - v->counter &= ~mask; - __global_unlock1(flags); + atomic_and(~mask, v); } -static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v) { - unsigned long flags; - - __global_lock1(flags); - fence(); - v->counter |= mask; - __global_unlock1(flags); + atomic_or(mask, v); } static inline int atomic_cmpxchg(atomic_t *v, int old, int new) |