Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/power/cpupower/lib/powercap.h
26292 views
1
/* SPDX-License-Identifier: GPL-2.0-only */

2
/*

3
 *  (C) 2016 SUSE Software Solutions GmbH

4
 *           Thomas Renninger <[email protected]>

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


22
struct 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


38
int powercap_walk_zones(struct powercap_zone *zone,

39
			int (*f)(struct powercap_zone *zone));

40


41
struct powercap_zone *powercap_init_zones(void);

42
int powercap_get_enabled(int *mode);

43
int powercap_set_enabled(int mode);

44
int powercap_get_driver(char *driver, int buflen);

45


46
int powercap_get_max_energy_range_uj(struct powercap_zone *zone, uint64_t *val);

47
int powercap_get_energy_uj(struct powercap_zone *zone, uint64_t *val);

48
int powercap_get_max_power_range_uw(struct powercap_zone *zone, uint64_t *val);

49
int powercap_get_power_uw(struct powercap_zone *zone, uint64_t *val);

50
int powercap_zone_get_enabled(struct powercap_zone *zone, int *mode);

51
int powercap_zone_set_enabled(struct powercap_zone *zone, int mode);

52


53


54
#endif /* __CPUPOWER_RAPL_H__ */

55


56