/* SPDX-License-Identifier: GPL-2.0-only */ /* * (C) 2016 SUSE Software Solutions GmbH * Thomas Renninger <trenn@suse.de> */ #ifndef __CPUPOWER_RAPL_H__ #define __CPUPOWER_RAPL_H__ #define PATH_TO_POWERCAP "/sys/devices/virtual/powercap" #define PATH_TO_RAPL "/sys/devices/virtual/powercap/intel-rapl" #define PATH_TO_RAPL_CLASS "/sys/devices/virtual/powercap/intel-rapl" #define POWERCAP_MAX_CHILD_ZONES 10 #define POWERCAP_MAX_TREE_DEPTH 10 #define MAX_LINE_LEN 4096 #define SYSFS_PATH_MAX 255 #include <stdint.h> struct powercap_zone { char name[MAX_LINE_LEN]; /* * sys_name relative to PATH_TO_POWERCAP, * do not forget the / in between */ char sys_name[SYSFS_PATH_MAX]; int tree_depth; struct powercap_zone *parent; struct powercap_zone *children[POWERCAP_MAX_CHILD_ZONES]; /* More possible caps or attributes to be added? */ uint32_t has_power_uw:1, has_energy_uj:1; }; int powercap_walk_zones(struct powercap_zone *zone, int (*f)(struct powercap_zone *zone)); struct powercap_zone *powercap_init_zones(void); int powercap_get_enabled(int *mode); int powercap_set_enabled(int mode); int powercap_get_driver(char *driver, int buflen); int powercap_get_max_energy_range_uj(struct powercap_zone *zone, uint64_t *val); int powercap_get_energy_uj(struct powercap_zone *zone, uint64_t *val); int powercap_get_max_power_range_uw(struct powercap_zone *zone, uint64_t *val); int powercap_get_power_uw(struct powercap_zone *zone, uint64_t *val); int powercap_zone_get_enabled(struct powercap_zone *zone, int *mode); int powercap_zone_set_enabled(struct powercap_zone *zone, int mode); #endif /* __CPUPOWER_RAPL_H__ */