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