16 …ne ATOMIC_HASH(a) (&(__atomic_hash[ (((unsigned long) a)/L1_CACHE_BYTES) & (ATOMIC_HASH_SIZE-1) ]))
51  * set_bit - Atomically set a bit in memory
63  * restricted to acting on a single-word quantity.
67 	unsigned long mask = BIT_MASK(nr);  in set_bit()  local
69 	unsigned long flags;  in set_bit()  local
71 	_atomic_spin_lock_irqsave(p, flags);  in set_bit()
72 	*p  |= mask;  in set_bit()
73 	_atomic_spin_unlock_irqrestore(p, flags);  in set_bit()
77  * clear_bit - Clears a bit in memory
88 	unsigned long mask = BIT_MASK(nr);  in clear_bit()  local
90 	unsigned long flags;  in clear_bit()  local
92 	_atomic_spin_lock_irqsave(p, flags);  in clear_bit()
93 	*p &= ~mask;  in clear_bit()
94 	_atomic_spin_unlock_irqrestore(p, flags);  in clear_bit()
98  * change_bit - Toggle a bit in memory
105  * restricted to acting on a single-word quantity.
109 	unsigned long mask = BIT_MASK(nr);  in change_bit()  local
111 	unsigned long flags;  in change_bit()  local
113 	_atomic_spin_lock_irqsave(p, flags);  in change_bit()
114 	*p ^= mask;  in change_bit()
115 	_atomic_spin_unlock_irqrestore(p, flags);  in change_bit()
119  * test_and_set_bit - Set a bit and return its old value
129 	unsigned long mask = BIT_MASK(nr);  in test_and_set_bit()  local
132 	unsigned long flags;  in test_and_set_bit()  local
134 	_atomic_spin_lock_irqsave(p, flags);  in test_and_set_bit()
136 	*p = old | mask;  in test_and_set_bit()
137 	_atomic_spin_unlock_irqrestore(p, flags);  in test_and_set_bit()
139 	return (old & mask) != 0;  in test_and_set_bit()
143  * test_and_clear_bit - Clear a bit and return its old value
153 	unsigned long mask = BIT_MASK(nr);  in test_and_clear_bit()  local
156 	unsigned long flags;  in test_and_clear_bit()  local
158 	_atomic_spin_lock_irqsave(p, flags);  in test_and_clear_bit()
160 	*p = old & ~mask;  in test_and_clear_bit()
161 	_atomic_spin_unlock_irqrestore(p, flags);  in test_and_clear_bit()
163 	return (old & mask) != 0;  in test_and_clear_bit()
167  * test_and_change_bit - Change a bit and return its old value
176 	unsigned long mask = BIT_MASK(nr);  in test_and_change_bit()  local
179 	unsigned long flags;  in test_and_change_bit()  local
181 	_atomic_spin_lock_irqsave(p, flags);  in test_and_change_bit()
183 	*p = old ^ mask;  in test_and_change_bit()
184 	_atomic_spin_unlock_irqrestore(p, flags);  in test_and_change_bit()
186 	return (old & mask) != 0;  in test_and_change_bit()