1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * (C) 2016 SUSE Software Solutions GmbH 4 * Thomas Renninger <trenn@suse.de> 5 */ 6 7#ifndef __CPUPOWER_RAPL_H__ 8#define __CPUPOWER_RAPL_H__ 9 10#define PATH_TO_POWERCAP "/sys/devices/virtual/powercap" 11#define PATH_TO_RAPL "/sys/devices/virtual/powercap/intel-rapl" 12#define PATH_TO_RAPL_CLASS "/sys/devices/virtual/powercap/intel-rapl" 13 14#define POWERCAP_MAX_CHILD_ZONES 10 15#define POWERCAP_MAX_TREE_DEPTH 10 16 17#define MAX_LINE_LEN 4096 18#define SYSFS_PATH_MAX 255 19 20#include <stdint.h> 21 22struct powercap_zone { 23 char name[MAX_LINE_LEN]; 24 /* 25 * sys_name relative to PATH_TO_POWERCAP, 26 * do not forget the / in between 27 */ 28 char sys_name[SYSFS_PATH_MAX]; 29 int tree_depth; 30 struct powercap_zone *parent; 31 struct powercap_zone *children[POWERCAP_MAX_CHILD_ZONES]; 32 /* More possible caps or attributes to be added? */ 33 uint32_t has_power_uw:1, 34 has_energy_uj:1; 35 36}; 37 38int powercap_walk_zones(struct powercap_zone *zone, 39 int (*f)(struct powercap_zone *zone)); 40 41struct powercap_zone *powercap_init_zones(void); 42int powercap_get_enabled(int *mode); 43int powercap_set_enabled(int mode); 44int powercap_get_driver(char *driver, int buflen); 45 46int powercap_get_max_energy_range_uj(struct powercap_zone *zone, uint64_t *val); 47int powercap_get_energy_uj(struct powercap_zone *zone, uint64_t *val); 48int powercap_get_max_power_range_uw(struct powercap_zone *zone, uint64_t *val); 49int powercap_get_power_uw(struct powercap_zone *zone, uint64_t *val); 50int powercap_zone_get_enabled(struct powercap_zone *zone, int *mode); 51int powercap_zone_set_enabled(struct powercap_zone *zone, int mode); 52 53 54#endif /* __CPUPOWER_RAPL_H__ */ 55