1 /* SPDX-License-Identifier: GPL-2.0 */
6  * Copyright (C) 1998-2003 Hewlett-Packard Co
7  *	David Mosberger-Tang <davidm@hpl.hp.com>
23  * set_bit - Atomically set a bit in memory
30  * restricted to acting on a single-word quantity.
34  * operate on hw-defined data-structures, so we can't easily change these
40 set_bit (int nr, volatile void *addr)  in set_bit()
43 	volatile __u32 *m;  in set_bit()
46 	m = (volatile __u32 *) addr + (nr >> 5);  in set_bit()
56  * arch___set_bit - Set a bit in memory
60  * Unlike set_bit(), this function is non-atomic and may be reordered.
65 arch___set_bit(unsigned long nr, volatile unsigned long *addr)  in arch___set_bit()
71  * clear_bit - Clears a bit in memory
81 clear_bit (int nr, volatile void *addr)  in clear_bit()
84 	volatile __u32 *m;  in clear_bit()
87 	m = (volatile __u32 *) addr + (nr >> 5);  in clear_bit()
97  * clear_bit_unlock - Clears a bit in memory with release
105 clear_bit_unlock (int nr, volatile void *addr)  in clear_bit_unlock()
108 	volatile __u32 *m;  in clear_bit_unlock()
111 	m = (volatile __u32 *) addr + (nr >> 5);  in clear_bit_unlock()
121  * __clear_bit_unlock - Non-atomically clears a bit in memory with release
138  * arch___clear_bit - Clears a bit in memory (non-atomic version)
142  * Unlike clear_bit(), this function is non-atomic and may be reordered.
147 arch___clear_bit(unsigned long nr, volatile unsigned long *addr)  in arch___clear_bit()
153  * change_bit - Toggle a bit in memory
159  * restricted to acting on a single-word quantity.
162 change_bit (int nr, volatile void *addr)  in change_bit()
165 	volatile __u32 *m;  in change_bit()
168 	m = (volatile __u32 *) addr + (nr >> 5);  in change_bit()
178  * arch___change_bit - Toggle a bit in memory
182  * Unlike change_bit(), this function is non-atomic and may be reordered.
187 arch___change_bit(unsigned long nr, volatile unsigned long *addr)  in arch___change_bit()
193  * test_and_set_bit - Set a bit and return its old value
201 test_and_set_bit (int nr, volatile void *addr)  in test_and_set_bit()
204 	volatile __u32 *m;  in test_and_set_bit()
207 	m = (volatile __u32 *) addr + (nr >> 5);  in test_and_set_bit()
218  * test_and_set_bit_lock - Set a bit and return its old value for lock
227  * arch___test_and_set_bit - Set a bit and return its old value
231  * This operation is non-atomic and can be reordered.  
236 arch___test_and_set_bit(unsigned long nr, volatile unsigned long *addr)  in arch___test_and_set_bit()
247  * test_and_clear_bit - Clear a bit and return its old value
255 test_and_clear_bit (int nr, volatile void *addr)  in test_and_clear_bit()
258 	volatile __u32 *m;  in test_and_clear_bit()
261 	m = (volatile __u32 *) addr + (nr >> 5);  in test_and_clear_bit()
272  * arch___test_and_clear_bit - Clear a bit and return its old value
276  * This operation is non-atomic and can be reordered.  
281 arch___test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)  in arch___test_and_clear_bit()
292  * test_and_change_bit - Change a bit and return its old value
300 test_and_change_bit (int nr, volatile void *addr)  in test_and_change_bit()
303 	volatile __u32 *m;  in test_and_change_bit()
306 	m = (volatile __u32 *) addr + (nr >> 5);  in test_and_change_bit()
317  * arch___test_and_change_bit - Change a bit and return its old value
321  * This operation is non-atomic and can be reordered.
324 arch___test_and_change_bit(unsigned long nr, volatile unsigned long *addr)  in arch___test_and_change_bit()
338  * ffz - find the first zero bit in a long word
341  * Returns the bit-number (0..63) of the first (least significant) zero bit.
349 	result = ia64_popcnt(x & (~x - 1));  in ffz()
354  * __ffs - find first bit in word.
364 	result = ia64_popcnt((x-1) & ~x);  in __ffs()
371  * Return bit number of last (most-significant) bit set.  Undefined
381 	return exp - 0xffff;  in ia64_fls()
415 	return ia64_popcnt(x) - 1;  in __fls()
418 #include <asm-generic/bitops/fls64.h>
420 #include <asm-generic/bitops/builtin-ffs.h>
424  * of bits set) of a N-bit word
437 #include <asm-generic/bitops/const_hweight.h>
443 #include <asm-generic/bitops/non-instrumented-non-atomic.h>
445 #include <asm-generic/bitops/le.h>
447 #include <asm-generic/bitops/ext2-atomic-setbit.h>
449 #include <asm-generic/bitops/sched.h>