LXR linux/tools/power/cpupower/utils/helpers/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__ */
  35