include/asm/bitops.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
18 #include <asm-generic/bitops/__ffs.h>
19 #include <asm-generic/bitops/ffz.h>
20 #include <asm-generic/bitops/fls.h>
21 #include <asm-generic/bitops/__fls.h>
22 #include <asm-generic/bitops/fls64.h>
23 #include <asm-generic/bitops/sched.h>
24 #include <asm-generic/bitops/ffs.h>
26 #include <asm-generic/bitops/hweight.h>
65  * test_and_set_bit - Set a bit and return its old value
66  * @nr: Bit to set
77  * test_and_clear_bit - Clear a bit and return its old value
78  * @nr: Bit to clear
89  * test_and_change_bit - Change a bit and return its old value
90  * @nr: Bit to change
102  * set_bit - Atomically set a bit in memory
103  * @nr: the bit to set
111  * restricted to acting on a single-word quantity.
119  * clear_bit - Clears a bit in memory
120  * @nr: Bit to clear
133  * change_bit - Toggle a bit in memory
134  * @nr: Bit to change
139  * restricted to acting on a single-word quantity.
147  * test_and_set_bit_lock - Set a bit and return its old value, for lock
148  * @nr: Bit to set
152  * It can be used to implement bit locks.
161  * clear_bit_unlock - Clear a bit in memory, for unlock
162  * @nr: the bit to set
174  * __clear_bit_unlock - Clear a bit in memory, for unlock
175  * @nr: the bit to set
180  * a bit lock, however it would only be used if no other CPU can modify
182  * if the bit lock itself protects access to the other bits in the word).
184  * On RISC-V systems there seems to be no benefit to taking advantage of the
185  * non-atomic property here: it's a lot more instructions and we still have to
200 #include <asm-generic/bitops/non-atomic.h>
201 #include <asm-generic/bitops/le.h>
202 #include <asm-generic/bitops/ext2-atomic.h>