1 /*
2 * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
3 *
4 * Licensed under the terms of the GNU GPL License version 2.
5 *
6 * Output format inspired by Len Brown's <lenb@kernel.org> turbostat tool.
7 *
8 */
9
10
11 #include <stdio.h>
12 #include <unistd.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <time.h>
16 #include <signal.h>
17 #include <sys/types.h>
18 #include <sys/wait.h>
19 #include <libgen.h>
20
21 #include "idle_monitor/cpupower-monitor.h"
22 #include "idle_monitor/idle_monitors.h"
23 #include "helpers/helpers.h"
24
25 /* Define pointers to all monitors. */
26 #define DEF(x) & x ## _monitor ,
27 struct cpuidle_monitor *all_monitors[] = {
28 #include "idle_monitors.def"
29 0
30 };
31
32 static struct cpuidle_monitor *monitors[MONITORS_MAX];
33 static unsigned int avail_monitors;
34
35 static char *progname;
36
37 enum operation_mode_e { list = 1, show, show_all };
38 static int mode;
39 static int interval = 1;
40 static char *show_monitors_param;
41 static struct cpupower_topology cpu_top;
42 static unsigned int wake_cpus;
43
44 /* ToDo: Document this in the manpage */
45 static char range_abbr[RANGE_MAX] = { 'T', 'C', 'P', 'M', };
46
print_wrong_arg_exit(void)47 static void print_wrong_arg_exit(void)
48 {
49 printf(_("invalid or unknown argument\n"));
50 exit(EXIT_FAILURE);
51 }
52
timespec_diff_us(struct timespec start,struct timespec end)53 long long timespec_diff_us(struct timespec start, struct timespec end)
54 {
55 struct timespec temp;
56 if ((end.tv_nsec - start.tv_nsec) < 0) {
57 temp.tv_sec = end.tv_sec - start.tv_sec - 1;
58 temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
59 } else {
60 temp.tv_sec = end.tv_sec - start.tv_sec;
61 temp.tv_nsec = end.tv_nsec - start.tv_nsec;
62 }
63 return (temp.tv_sec * 1000000) + (temp.tv_nsec / 1000);
64 }
65
print_n_spaces(int n)66 void print_n_spaces(int n)
67 {
68 int x;
69 for (x = 0; x < n; x++)
70 printf(" ");
71 }
72
73 /*s is filled with left and right spaces
74 *to make its length atleast n+1
75 */
fill_string_with_spaces(char * s,int n)76 int fill_string_with_spaces(char *s, int n)
77 {
78 char *temp;
79 int len = strlen(s);
80
81 if (len >= n)
82 return -1;
83
84 temp = malloc(sizeof(char) * (n+1));
85 for (; len < n; len++)
86 s[len] = ' ';
87 s[len] = '\0';
88 snprintf(temp, n+1, " %s", s);
89 strcpy(s, temp);
90 free(temp);
91 return 0;
92 }
93
94 #define MAX_COL_WIDTH 6
print_header(int topology_depth)95 void print_header(int topology_depth)
96 {
97 int unsigned mon;
98 int state, need_len;
99 cstate_t s;
100 char buf[128] = "";
101
102 fill_string_with_spaces(buf, topology_depth * 5 - 1);
103 printf("%s|", buf);
104
105 for (mon = 0; mon < avail_monitors; mon++) {
106 need_len = monitors[mon]->hw_states_num * (MAX_COL_WIDTH + 1)
107 - 1;
108 if (mon != 0)
109 printf("||");
110 sprintf(buf, "%s", monitors[mon]->name);
111 fill_string_with_spaces(buf, need_len);
112 printf("%s", buf);
113 }
114 printf("\n");
115
116 if (topology_depth > 2)
117 printf(" PKG|");
118 if (topology_depth > 1)
119 printf("CORE|");
120 if (topology_depth > 0)
121 printf(" CPU|");
122
123 for (mon = 0; mon < avail_monitors; mon++) {
124 if (mon != 0)
125 printf("||");
126 for (state = 0; state < monitors[mon]->hw_states_num; state++) {
127 if (state != 0)
128 printf("|");
129 s = monitors[mon]->hw_states[state];
130 sprintf(buf, "%s", s.name);
131 fill_string_with_spaces(buf, MAX_COL_WIDTH);
132 printf("%s", buf);
133 }
134 printf(" ");
135 }
136 printf("\n");
137 }
138
139
print_results(int topology_depth,int cpu)140 void print_results(int topology_depth, int cpu)
141 {
142 unsigned int mon;
143 int state, ret;
144 double percent;
145 unsigned long long result;
146 cstate_t s;
147
148 /* Be careful CPUs may got resorted for pkg value do not just use cpu */
149 if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu))
150 return;
151 if (!cpu_top.core_info[cpu].is_online &&
152 cpu_top.core_info[cpu].pkg == -1)
153 return;
154
155 if (topology_depth > 2)
156 printf("%4d|", cpu_top.core_info[cpu].pkg);
157 if (topology_depth > 1)
158 printf("%4d|", cpu_top.core_info[cpu].core);
159 if (topology_depth > 0)
160 printf("%4d|", cpu_top.core_info[cpu].cpu);
161
162 for (mon = 0; mon < avail_monitors; mon++) {
163 if (mon != 0)
164 printf("||");
165
166 for (state = 0; state < monitors[mon]->hw_states_num; state++) {
167 if (state != 0)
168 printf("|");
169
170 s = monitors[mon]->hw_states[state];
171
172 if (s.get_count_percent) {
173 ret = s.get_count_percent(s.id, &percent,
174 cpu_top.core_info[cpu].cpu);
175 if (ret)
176 printf("******");
177 else if (percent >= 100.0)
178 printf("%6.1f", percent);
179 else
180 printf("%6.2f", percent);
181 } else if (s.get_count) {
182 ret = s.get_count(s.id, &result,
183 cpu_top.core_info[cpu].cpu);
184 if (ret)
185 printf("******");
186 else
187 printf("%6llu", result);
188 } else {
189 printf(_("Monitor %s, Counter %s has no count "
190 "function. Implementation error\n"),
191 monitors[mon]->name, s.name);
192 exit(EXIT_FAILURE);
193 }
194 }
195 }
196 /*
197 * The monitor could still provide useful data, for example
198 * AMD HW counters partly sit in PCI config space.
199 * It's up to the monitor plug-in to check .is_online, this one
200 * is just for additional info.
201 */
202 if (!cpu_top.core_info[cpu].is_online &&
203 cpu_top.core_info[cpu].pkg != -1) {
204 printf(_(" *is offline\n"));
205 return;
206 } else
207 printf("\n");
208 }
209
210
211 /* param: string passed by -m param (The list of monitors to show)
212 *
213 * Monitors must have been registered already, matching monitors
214 * are picked out and available monitors array is overridden
215 * with matching ones
216 *
217 * Monitors get sorted in the same order the user passes them
218 */
219
parse_monitor_param(char * param)220 static void parse_monitor_param(char *param)
221 {
222 unsigned int num;
223 int mon, hits = 0;
224 char *tmp = param, *token;
225 struct cpuidle_monitor *tmp_mons[MONITORS_MAX];
226
227
228 for (mon = 0; mon < MONITORS_MAX; mon++, tmp = NULL) {
229 token = strtok(tmp, ",");
230 if (token == NULL)
231 break;
232 if (strlen(token) >= MONITOR_NAME_LEN) {
233 printf(_("%s: max monitor name length"
234 " (%d) exceeded\n"), token, MONITOR_NAME_LEN);
235 continue;
236 }
237
238 for (num = 0; num < avail_monitors; num++) {
239 if (!strcmp(monitors[num]->name, token)) {
240 dprint("Found requested monitor: %s\n", token);
241 tmp_mons[hits] = monitors[num];
242 hits++;
243 }
244 }
245 }
246 if (hits == 0) {
247 printf(_("No matching monitor found in %s, "
248 "try -l option\n"), param);
249 exit(EXIT_FAILURE);
250 }
251 /* Override detected/registerd monitors array with requested one */
252 memcpy(monitors, tmp_mons,
253 sizeof(struct cpuidle_monitor *) * MONITORS_MAX);
254 avail_monitors = hits;
255 }
256
list_monitors(void)257 void list_monitors(void)
258 {
259 unsigned int mon;
260 int state;
261 cstate_t s;
262
263 for (mon = 0; mon < avail_monitors; mon++) {
264 printf(_("Monitor \"%s\" (%d states) - Might overflow after %u "
265 "s\n"),
266 monitors[mon]->name, monitors[mon]->hw_states_num,
267 monitors[mon]->overflow_s);
268
269 for (state = 0; state < monitors[mon]->hw_states_num; state++) {
270 s = monitors[mon]->hw_states[state];
271 /*
272 * ToDo show more state capabilities:
273 * percent, time (granlarity)
274 */
275 printf("%s\t[%c] -> %s\n", s.name, range_abbr[s.range],
276 gettext(s.desc));
277 }
278 }
279 }
280
fork_it(char ** argv)281 int fork_it(char **argv)
282 {
283 int status;
284 unsigned int num;
285 unsigned long long timediff;
286 pid_t child_pid;
287 struct timespec start, end;
288
289 child_pid = fork();
290 clock_gettime(CLOCK_REALTIME, &start);
291
292 for (num = 0; num < avail_monitors; num++)
293 monitors[num]->start();
294
295 if (!child_pid) {
296 /* child */
297 execvp(argv[0], argv);
298 } else {
299 /* parent */
300 if (child_pid == -1) {
301 perror("fork");
302 exit(1);
303 }
304
305 signal(SIGINT, SIG_IGN);
306 signal(SIGQUIT, SIG_IGN);
307 if (waitpid(child_pid, &status, 0) == -1) {
308 perror("wait");
309 exit(1);
310 }
311 }
312 clock_gettime(CLOCK_REALTIME, &end);
313 for (num = 0; num < avail_monitors; num++)
314 monitors[num]->stop();
315
316 timediff = timespec_diff_us(start, end);
317 if (WIFEXITED(status))
318 printf(_("%s took %.5f seconds and exited with status %d\n"),
319 argv[0], timediff / (1000.0 * 1000),
320 WEXITSTATUS(status));
321 return 0;
322 }
323
do_interval_measure(int i)324 int do_interval_measure(int i)
325 {
326 unsigned int num;
327 int cpu;
328
329 if (wake_cpus)
330 for (cpu = 0; cpu < cpu_count; cpu++)
331 bind_cpu(cpu);
332
333 for (num = 0; num < avail_monitors; num++) {
334 dprint("HW C-state residency monitor: %s - States: %d\n",
335 monitors[num]->name, monitors[num]->hw_states_num);
336 monitors[num]->start();
337 }
338
339 sleep(i);
340
341 if (wake_cpus)
342 for (cpu = 0; cpu < cpu_count; cpu++)
343 bind_cpu(cpu);
344
345 for (num = 0; num < avail_monitors; num++)
346 monitors[num]->stop();
347
348
349 return 0;
350 }
351
cmdline(int argc,char * argv[])352 static void cmdline(int argc, char *argv[])
353 {
354 int opt;
355 progname = basename(argv[0]);
356
357 while ((opt = getopt(argc, argv, "+lci:m:")) != -1) {
358 switch (opt) {
359 case 'l':
360 if (mode)
361 print_wrong_arg_exit();
362 mode = list;
363 break;
364 case 'i':
365 /* only allow -i with -m or no option */
366 if (mode && mode != show)
367 print_wrong_arg_exit();
368 interval = atoi(optarg);
369 break;
370 case 'm':
371 if (mode)
372 print_wrong_arg_exit();
373 mode = show;
374 show_monitors_param = optarg;
375 break;
376 case 'c':
377 wake_cpus = 1;
378 break;
379 default:
380 print_wrong_arg_exit();
381 }
382 }
383 if (!mode)
384 mode = show_all;
385 }
386
cmd_monitor(int argc,char ** argv)387 int cmd_monitor(int argc, char **argv)
388 {
389 unsigned int num;
390 struct cpuidle_monitor *test_mon;
391 int cpu;
392
393 cmdline(argc, argv);
394 cpu_count = get_cpu_topology(&cpu_top);
395 if (cpu_count < 0) {
396 printf(_("Cannot read number of available processors\n"));
397 return EXIT_FAILURE;
398 }
399
400 if (!cpu_top.core_info[0].is_online)
401 printf("WARNING: at least one cpu is offline\n");
402
403 /* Default is: monitor all CPUs */
404 if (bitmask_isallclear(cpus_chosen))
405 bitmask_setall(cpus_chosen);
406
407 dprint("System has up to %d CPU cores\n", cpu_count);
408
409 for (num = 0; all_monitors[num]; num++) {
410 dprint("Try to register: %s\n", all_monitors[num]->name);
411 test_mon = all_monitors[num]->do_register();
412 if (test_mon) {
413 if (test_mon->needs_root && !run_as_root) {
414 fprintf(stderr, _("Available monitor %s needs "
415 "root access\n"), test_mon->name);
416 continue;
417 }
418 monitors[avail_monitors] = test_mon;
419 dprint("%s registered\n", all_monitors[num]->name);
420 avail_monitors++;
421 }
422 }
423
424 if (avail_monitors == 0) {
425 printf(_("No HW Cstate monitors found\n"));
426 return 1;
427 }
428
429 if (mode == list) {
430 list_monitors();
431 exit(EXIT_SUCCESS);
432 }
433
434 if (mode == show)
435 parse_monitor_param(show_monitors_param);
436
437 dprint("Packages: %d - Cores: %d - CPUs: %d\n",
438 cpu_top.pkgs, cpu_top.cores, cpu_count);
439
440 /*
441 * if any params left, it must be a command to fork
442 */
443 if (argc - optind)
444 fork_it(argv + optind);
445 else
446 do_interval_measure(interval);
447
448 /* ToDo: Topology parsing needs fixing first to do
449 this more generically */
450 if (cpu_top.pkgs > 1)
451 print_header(3);
452 else
453 print_header(1);
454
455 for (cpu = 0; cpu < cpu_count; cpu++) {
456 if (cpu_top.pkgs > 1)
457 print_results(3, cpu);
458 else
459 print_results(1, cpu);
460 }
461
462 for (num = 0; num < avail_monitors; num++)
463 monitors[num]->unregister();
464
465 cpu_topology_release(cpu_top);
466 return 0;
467 }
468
