1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
* (C) 2010 Thomas Renninger <trenn@suse.de>
*
* Licensed under the terms of the GNU GPL License version 2.
*/
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <cpuidle.h>
#include "helpers/sysfs.h"
#include "helpers/helpers.h"
#include "helpers/bitmask.h"
#define LINE_LEN 10
static void cpuidle_cpu_output(unsigned int cpu, int verbose)
{
unsigned int idlestates, idlestate;
char *tmp;
idlestates = cpuidle_state_count(cpu);
if (idlestates == 0) {
printf(_("CPU %u: No idle states\n"), cpu);
return;
}
printf(_("Number of idle states: %d\n"), idlestates);
printf(_("Available idle states:"));
for (idlestate = 0; idlestate < idlestates; idlestate++) {
tmp = cpuidle_state_name(cpu, idlestate);
if (!tmp)
continue;
printf(" %s", tmp);
free(tmp);
}
printf("\n");
if (!verbose)
return;
for (idlestate = 0; idlestate < idlestates; idlestate++) {
int disabled = cpuidle_is_state_disabled(cpu, idlestate);
/* Disabled interface not supported on older kernels */
if (disabled < 0)
disabled = 0;
tmp = cpuidle_state_name(cpu, idlestate);
if (!tmp)
continue;
printf("%s%s:\n", tmp, (disabled) ? " (DISABLED) " : "");
free(tmp);
tmp = cpuidle_state_desc(cpu, idlestate);
if (!tmp)
continue;
printf(_("Flags/Description: %s\n"), tmp);
free(tmp);
printf(_("Latency: %lu\n"),
cpuidle_state_latency(cpu, idlestate));
printf(_("Usage: %lu\n"),
cpuidle_state_usage(cpu, idlestate));
printf(_("Duration: %llu\n"),
cpuidle_state_time(cpu, idlestate));
}
}
static void cpuidle_general_output(void)
{
char *tmp;
tmp = cpuidle_get_driver();
if (!tmp) {
printf(_("Could not determine cpuidle driver\n"));
return;
}
printf(_("CPUidle driver: %s\n"), tmp);
free(tmp);
tmp = cpuidle_get_governor();
if (!tmp) {
printf(_("Could not determine cpuidle governor\n"));
return;
}
printf(_("CPUidle governor: %s\n"), tmp);
free(tmp);
}
static void proc_cpuidle_cpu_output(unsigned int cpu)
{
long max_allowed_cstate = 2000000000;
unsigned int cstate, cstates;
cstates = cpuidle_state_count(cpu);
if (cstates == 0) {
printf(_("CPU %u: No C-states info\n"), cpu);
return;
}
printf(_("active state: C0\n"));
printf(_("max_cstate: C%u\n"), cstates-1);
printf(_("maximum allowed latency: %lu usec\n"), max_allowed_cstate);
printf(_("states:\t\n"));
for (cstate = 1; cstate < cstates; cstate++) {
printf(_(" C%d: "
"type[C%d] "), cstate, cstate);
printf(_("promotion[--] demotion[--] "));
printf(_("latency[%03lu] "),
cpuidle_state_latency(cpu, cstate));
printf(_("usage[%08lu] "),
cpuidle_state_usage(cpu, cstate));
printf(_("duration[%020Lu] \n"),
cpuidle_state_time(cpu, cstate));
}
}
static struct option info_opts[] = {
{"silent", no_argument, NULL, 's'},
{"proc", no_argument, NULL, 'o'},
{ },
};
static inline void cpuidle_exit(int fail)
{
exit(EXIT_FAILURE);
}
int cmd_idle_info(int argc, char **argv)
{
extern char *optarg;
extern int optind, opterr, optopt;
int ret = 0, cont = 1, output_param = 0, verbose = 1;
unsigned int cpu = 0;
do {
ret = getopt_long(argc, argv, "os", info_opts, NULL);
if (ret == -1)
break;
switch (ret) {
case '?':
output_param = '?';
cont = 0;
break;
case 's':
verbose = 0;
break;
case -1:
cont = 0;
break;
case 'o':
if (output_param) {
output_param = -1;
cont = 0;
break;
}
output_param = ret;
break;
}
} while (cont);
switch (output_param) {
case -1:
printf(_("You can't specify more than one "
"output-specific argument\n"));
cpuidle_exit(EXIT_FAILURE);
case '?':
printf(_("invalid or unknown argument\n"));
cpuidle_exit(EXIT_FAILURE);
}
/* Default is: show output of CPU 0 only */
if (bitmask_isallclear(cpus_chosen))
bitmask_setbit(cpus_chosen, 0);
if (output_param == 0)
cpuidle_general_output();
for (cpu = bitmask_first(cpus_chosen);
cpu <= bitmask_last(cpus_chosen); cpu++) {
if (!bitmask_isbitset(cpus_chosen, cpu))
continue;
printf(_("analyzing CPU %d:\n"), cpu);
if (sysfs_is_cpu_online(cpu) != 1) {
printf(_(" *is offline\n"));
printf("\n");
continue;
}
switch (output_param) {
case 'o':
proc_cpuidle_cpu_output(cpu);
break;
case 0:
printf("\n");
cpuidle_cpu_output(cpu, verbose);
break;
}
printf("\n");
}
return EXIT_SUCCESS;
}
|
