bitmask.h

 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
11struct bitmask {
12	unsigned int size;
13	unsigned long *maskp;
14};
15
16struct bitmask *bitmask_alloc(unsigned int n);
17void bitmask_free(struct bitmask *bmp);
18
19struct bitmask *bitmask_setbit(struct bitmask *bmp, unsigned int i);
20struct bitmask *bitmask_setall(struct bitmask *bmp);
21struct bitmask *bitmask_clearall(struct bitmask *bmp);
22
23unsigned int bitmask_first(const struct bitmask *bmp);
24unsigned int bitmask_next(const struct bitmask *bmp, unsigned int i);
25unsigned int bitmask_last(const struct bitmask *bmp);
26int bitmask_isallclear(const struct bitmask *bmp);
27int bitmask_isbitset(const struct bitmask *bmp, unsigned int i);
28
29int bitmask_parselist(const char *buf, struct bitmask *bmp);
30int bitmask_displaylist(char *buf, int len, const struct bitmask *bmp);
31
32
33
34#endif /*__CPUPOWER_BITMASK__ */