1 /* SPDX-License-Identifier: GPL-2.0 */
8  * ___set_bit - Set a bit in memory
9  * @nr: the bit to set
12  * Unlike set_bit(), this function is non-atomic and may be reordered.
19 	unsigned long mask = BIT_MASK(nr);  in ___set_bit()  local
22 	*p  |= mask;  in ___set_bit()
28 	unsigned long mask = BIT_MASK(nr);  in ___clear_bit()  local
31 	*p &= ~mask;  in ___clear_bit()
35  * ___change_bit - Toggle a bit in memory
36  * @nr: the bit to change
39  * Unlike change_bit(), this function is non-atomic and may be reordered.
46 	unsigned long mask = BIT_MASK(nr);  in ___change_bit()  local
49 	*p ^= mask;  in ___change_bit()
53  * ___test_and_set_bit - Set a bit and return its old value
54  * @nr: Bit to set
57  * This operation is non-atomic and can be reordered.
64 	unsigned long mask = BIT_MASK(nr);  in ___test_and_set_bit()  local
68 	*p = old | mask;  in ___test_and_set_bit()
69 	return (old & mask) != 0;  in ___test_and_set_bit()
73  * ___test_and_clear_bit - Clear a bit and return its old value
74  * @nr: Bit to clear
77  * This operation is non-atomic and can be reordered.
84 	unsigned long mask = BIT_MASK(nr);  in ___test_and_clear_bit()  local
88 	*p = old & ~mask;  in ___test_and_clear_bit()
89 	return (old & mask) != 0;  in ___test_and_clear_bit()
96 	unsigned long mask = BIT_MASK(nr);  in ___test_and_change_bit()  local
100 	*p = old ^ mask;  in ___test_and_change_bit()
101 	return (old & mask) != 0;  in ___test_and_change_bit()
105  * _test_bit - Determine whether a bit is set
106  * @nr: bit number to test
112 	return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));  in _test_bit()