1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __CPUPOWER_BITMASK__
3 #define __CPUPOWER_BITMASK__
4
5 /* Taken over from libbitmask, a project initiated from sgi:
6 * Url: http://oss.sgi.com/projects/cpusets/
7 * Unfortunately it's not very widespread, therefore relevant parts are
8 * pasted here.
9 */
10
11 struct bitmask {
12 unsigned int size;
13 unsigned long *maskp;
14 };
15
16 struct bitmask *bitmask_alloc(unsigned int n);
17 void bitmask_free(struct bitmask *bmp);
18
19 struct bitmask *bitmask_setbit(struct bitmask *bmp, unsigned int i);
20 struct bitmask *bitmask_setall(struct bitmask *bmp);
21 struct bitmask *bitmask_clearall(struct bitmask *bmp);
22
23 unsigned int bitmask_first(const struct bitmask *bmp);
24 unsigned int bitmask_next(const struct bitmask *bmp, unsigned int i);
25 unsigned int bitmask_last(const struct bitmask *bmp);
26 int bitmask_isallclear(const struct bitmask *bmp);
27 int bitmask_isbitset(const struct bitmask *bmp, unsigned int i);
28
29 int bitmask_parselist(const char *buf, struct bitmask *bmp);
30 int bitmask_displaylist(char *buf, int len, const struct bitmask *bmp);
31
32
33
34 #endif /*__CPUPOWER_BITMASK__ */
35
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