| /trunk/kernel/arch/ia64/include/atomic.h |
|---|
| 52,12 → 52,12 |
| return v; |
| } |
| static inline uint64_t test_and_set(atomic_t *val) { |
| static inline uint64_t test_and_set(atomic_t *val) |
| { |
| uint64_t v; |
| asm volatile ( |
| "movl %0 = 0x01;;\n" |
| "movl %0 = 0x1;;\n" |
| "xchg8 %0 = %1, %0;;\n" |
| : "=r" (v), "+m" (val->count) |
| ); |
| 65,6 → 65,13 |
| return v; |
| } |
| static inline void atomic_lock_arch(atomic_t *val) |
| { |
| do { |
| while (val->count) |
| ; |
| } while (test_and_set(val)); |
| } |
| static inline void atomic_inc(atomic_t *val) |
| { |