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- #ifndef _ASM_MICROBLAZE_ATOMIC_H
- #define _ASM_MICROBLAZE_ATOMIC_H
- #include <asm/cmpxchg.h>
- #include <asm-generic/atomic.h>
- #include <asm-generic/atomic64.h>
- /*
- * Atomically test *v and decrement if it is greater than 0.
- * The function returns the old value of *v minus 1.
- */
- static inline int atomic_dec_if_positive(atomic_t *v)
- {
- unsigned long flags;
- int res;
- local_irq_save(flags);
- res = v->counter - 1;
- if (res >= 0)
- v->counter = res;
- local_irq_restore(flags);
- return res;
- }
- #define atomic_dec_if_positive atomic_dec_if_positive
- #endif /* _ASM_MICROBLAZE_ATOMIC_H */
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