diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/atomic64.c | 83 |
1 files changed, 36 insertions, 47 deletions
diff --git a/lib/atomic64.c b/lib/atomic64.c index 08a4f06..1298c05e 100644 --- a/lib/atomic64.c +++ b/lib/atomic64.c @@ -70,53 +70,42 @@ void atomic64_set(atomic64_t *v, long long i) } EXPORT_SYMBOL(atomic64_set); -void atomic64_add(long long a, atomic64_t *v) -{ - unsigned long flags; - raw_spinlock_t *lock = lock_addr(v); - - raw_spin_lock_irqsave(lock, flags); - v->counter += a; - raw_spin_unlock_irqrestore(lock, flags); -} -EXPORT_SYMBOL(atomic64_add); - -long long atomic64_add_return(long long a, atomic64_t *v) -{ - unsigned long flags; - raw_spinlock_t *lock = lock_addr(v); - long long val; - - raw_spin_lock_irqsave(lock, flags); - val = v->counter += a; - raw_spin_unlock_irqrestore(lock, flags); - return val; -} -EXPORT_SYMBOL(atomic64_add_return); - -void atomic64_sub(long long a, atomic64_t *v) -{ - unsigned long flags; - raw_spinlock_t *lock = lock_addr(v); - - raw_spin_lock_irqsave(lock, flags); - v->counter -= a; - raw_spin_unlock_irqrestore(lock, flags); -} -EXPORT_SYMBOL(atomic64_sub); - -long long atomic64_sub_return(long long a, atomic64_t *v) -{ - unsigned long flags; - raw_spinlock_t *lock = lock_addr(v); - long long val; - - raw_spin_lock_irqsave(lock, flags); - val = v->counter -= a; - raw_spin_unlock_irqrestore(lock, flags); - return val; -} -EXPORT_SYMBOL(atomic64_sub_return); +#define ATOMIC64_OP(op, c_op) \ +void atomic64_##op(long long a, atomic64_t *v) \ +{ \ + unsigned long flags; \ + raw_spinlock_t *lock = lock_addr(v); \ + \ + raw_spin_lock_irqsave(lock, flags); \ + v->counter c_op a; \ + raw_spin_unlock_irqrestore(lock, flags); \ +} \ +EXPORT_SYMBOL(atomic64_##op); + +#define ATOMIC64_OP_RETURN(op, c_op) \ +long long atomic64_##op##_return(long long a, atomic64_t *v) \ +{ \ + unsigned long flags; \ + raw_spinlock_t *lock = lock_addr(v); \ + long long val; \ + \ + raw_spin_lock_irqsave(lock, flags); \ + val = (v->counter c_op a); \ + raw_spin_unlock_irqrestore(lock, flags); \ + return val; \ +} \ +EXPORT_SYMBOL(atomic64_##op##_return); + +#define ATOMIC64_OPS(op, c_op) \ + ATOMIC64_OP(op, c_op) \ + ATOMIC64_OP_RETURN(op, c_op) + +ATOMIC64_OPS(add, +=) +ATOMIC64_OPS(sub, -=) + +#undef ATOMIC64_OPS +#undef ATOMIC64_OP_RETURN +#undef ATOMIC64_OP long long atomic64_dec_if_positive(atomic64_t *v) { |
