1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __CPUPOWER_BITMASK__ 3*4882a593Smuzhiyun #define __CPUPOWER_BITMASK__ 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* Taken over from libbitmask, a project initiated from sgi: 6*4882a593Smuzhiyun * Url: http://oss.sgi.com/projects/cpusets/ 7*4882a593Smuzhiyun * Unfortunately it's not very widespread, therefore relevant parts are 8*4882a593Smuzhiyun * pasted here. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun struct bitmask { 12*4882a593Smuzhiyun unsigned int size; 13*4882a593Smuzhiyun unsigned long *maskp; 14*4882a593Smuzhiyun }; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct bitmask *bitmask_alloc(unsigned int n); 17*4882a593Smuzhiyun void bitmask_free(struct bitmask *bmp); 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun struct bitmask *bitmask_setbit(struct bitmask *bmp, unsigned int i); 20*4882a593Smuzhiyun struct bitmask *bitmask_setall(struct bitmask *bmp); 21*4882a593Smuzhiyun struct bitmask *bitmask_clearall(struct bitmask *bmp); 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun unsigned int bitmask_first(const struct bitmask *bmp); 24*4882a593Smuzhiyun unsigned int bitmask_next(const struct bitmask *bmp, unsigned int i); 25*4882a593Smuzhiyun unsigned int bitmask_last(const struct bitmask *bmp); 26*4882a593Smuzhiyun int bitmask_isallclear(const struct bitmask *bmp); 27*4882a593Smuzhiyun int bitmask_isbitset(const struct bitmask *bmp, unsigned int i); 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun int bitmask_parselist(const char *buf, struct bitmask *bmp); 30*4882a593Smuzhiyun int bitmask_displaylist(char *buf, int len, const struct bitmask *bmp); 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #endif /*__CPUPOWER_BITMASK__ */ 35