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| author | Ingo Molnar <mingo@kernel.org> | 2016-07-07 09:12:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-07 09:12:02 +0200 |
| commit | 36e91aa2628e46c2146049eee8b9b7f773b0ffc3 (patch) | |
| tree | c14e756181dca4e4e06d6aa1b1299a5f4dc5bf3d /arch/mn10300 | |
| parent | 03e3c2b7edbe1e8758196b2c7843333eb328063d (diff) | |
| parent | b7271b9f3e18181559b96a610f4e42bdb04b07f5 (diff) | |
| download | linux-36e91aa2628e46c2146049eee8b9b7f773b0ffc3.tar.gz linux-36e91aa2628e46c2146049eee8b9b7f773b0ffc3.tar.xz | |
Merge branch 'locking/arch-atomic' into locking/core, because the topic is ready
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/mn10300')
| -rw-r--r-- | arch/mn10300/include/asm/atomic.h | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h index ce318d5ab23b..36389efd45e8 100644 --- a/arch/mn10300/include/asm/atomic.h +++ b/arch/mn10300/include/asm/atomic.h @@ -84,16 +84,41 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ return retval; \ } -#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) +#define ATOMIC_FETCH_OP(op) \ +static inline int atomic_fetch_##op(int i, atomic_t *v) \ +{ \ + int retval, status; \ + \ + asm volatile( \ + "1: mov %4,(_AAR,%3) \n" \ + " mov (_ADR,%3),%1 \n" \ + " mov %1,%0 \n" \ + " " #op " %5,%0 \n" \ + " mov %0,(_ADR,%3) \n" \ + " mov (_ADR,%3),%0 \n" /* flush */ \ + " mov (_ASR,%3),%0 \n" \ + " or %0,%0 \n" \ + " bne 1b \n" \ + : "=&r"(status), "=&r"(retval), "=m"(v->counter) \ + : "a"(ATOMIC_OPS_BASE_ADDR), "r"(&v->counter), "r"(i) \ + : "memory", "cc"); \ + return retval; \ +} + +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op) ATOMIC_OPS(add) ATOMIC_OPS(sub) -ATOMIC_OP(and) -ATOMIC_OP(or) -ATOMIC_OP(xor) +#undef ATOMIC_OPS +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) + +ATOMIC_OPS(and) +ATOMIC_OPS(or) +ATOMIC_OPS(xor) #undef ATOMIC_OPS +#undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN #undef ATOMIC_OP |