1
2
3
4
5
6#ifndef __CPUIDLE_INFO_HW__
7#define __CPUIDLE_INFO_HW__
8
9#include <stdarg.h>
10#include <time.h>
11
12#include "idle_monitor/idle_monitors.h"
13
14#define MONITORS_MAX 20
15#define MONITOR_NAME_LEN 20
16
17
18
19
20
21#ifdef __powerpc__
22#define CSTATE_NAME_LEN 7
23#else
24#define CSTATE_NAME_LEN 5
25#endif
26#define CSTATE_DESC_LEN 60
27
28int cpu_count;
29
30
31enum power_range_e {
32 RANGE_THREAD,
33
34 RANGE_CORE,
35 RANGE_PACKAGE,
36 RANGE_MACHINE,
37 RANGE_MAX };
38
39typedef struct cstate {
40 int id;
41 enum power_range_e range;
42 char name[CSTATE_NAME_LEN];
43 char desc[CSTATE_DESC_LEN];
44
45
46 int (*get_count_percent)(unsigned int self_id, double *percent,
47 unsigned int cpu);
48 int (*get_count)(unsigned int self_id, unsigned long long *count,
49 unsigned int cpu);
50} cstate_t;
51
52struct cpuidle_monitor {
53
54 char name[MONITOR_NAME_LEN];
55 int name_len;
56 int hw_states_num;
57 cstate_t *hw_states;
58 int (*start) (void);
59 int (*stop) (void);
60 struct cpuidle_monitor* (*do_register) (void);
61 void (*unregister)(void);
62 unsigned int overflow_s;
63 int needs_root;
64};
65
66extern long long timespec_diff_us(struct timespec start, struct timespec end);
67
68#define print_overflow_err(mes, ov) \
69{ \
70 fprintf(stderr, gettext("Measure took %u seconds, but registers could " \
71 "overflow at %u seconds, results " \
72 "could be inaccurate\n"), mes, ov); \
73}
74
75
76
77#include <sched.h>
78#include <sys/types.h>
79#include <unistd.h>
80static inline int bind_cpu(int cpu)
81{
82 cpu_set_t set;
83
84 if (sched_getaffinity(getpid(), sizeof(set), &set) == 0) {
85 CPU_ZERO(&set);
86 CPU_SET(cpu, &set);
87 return sched_setaffinity(getpid(), sizeof(set), &set);
88 }
89 return 1;
90}
91
92#endif
93