2 * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
4 * Licensed under the terms of the GNU GPL License version 2.
17 #include "helpers/helpers.h"
18 #include "helpers/bitmask.h"
22 static unsigned int count_cpus(void)
27 unsigned int cpunr = 0;
29 fp = fopen("/proc/stat", "r");
31 printf(_("Couldn't count the number of CPUs (%s: %s), assuming 1\n"), "/proc/stat", strerror(errno));
36 if (!fgets(value, LINE_LEN, fp))
38 value[LINE_LEN - 1] = '\0';
39 if (strlen(value) < (LINE_LEN - 2))
41 if (strstr(value, "cpu "))
43 if (sscanf(value, "cpu%d ", &cpunr) != 1)
50 /* cpu count starts from 0, on error return 1 (UP) */
55 static void proc_cpufreq_output(void)
57 unsigned int cpu, nr_cpus;
58 struct cpufreq_policy *policy;
59 unsigned int min_pctg = 0;
60 unsigned int max_pctg = 0;
61 unsigned long min, max;
63 printf(_(" minimum CPU frequency - maximum CPU frequency - governor\n"));
65 nr_cpus = count_cpus();
66 for (cpu = 0; cpu < nr_cpus; cpu++) {
67 policy = cpufreq_get_policy(cpu);
71 if (cpufreq_get_hardware_limits(cpu, &min, &max)) {
74 min_pctg = (policy->min * 100) / max;
75 max_pctg = (policy->max * 100) / max;
77 printf("CPU%3d %9lu kHz (%3d %%) - %9lu kHz (%3d %%) - %s\n",
78 cpu , policy->min, max ? min_pctg : 0, policy->max,
79 max ? max_pctg : 0, policy->governor);
81 cpufreq_put_policy(policy);
85 static void print_speed(unsigned long speed)
89 if (speed > 1000000) {
93 printf("%u.%02u GHz", ((unsigned int) speed/1000000),
94 ((unsigned int) (speed%1000000)/10000));
95 } else if (speed > 100000) {
99 printf("%u MHz", ((unsigned int) speed / 1000));
100 } else if (speed > 1000) {
104 printf("%u.%01u MHz", ((unsigned int) speed/1000),
105 ((unsigned int) (speed%1000)/100));
107 printf("%lu kHz", speed);
112 static void print_duration(unsigned long duration)
116 if (duration > 1000000) {
117 tmp = duration % 10000;
120 printf("%u.%02u ms", ((unsigned int) duration/1000000),
121 ((unsigned int) (duration%1000000)/10000));
122 } else if (duration > 100000) {
123 tmp = duration % 1000;
126 printf("%u us", ((unsigned int) duration / 1000));
127 } else if (duration > 1000) {
128 tmp = duration % 100;
131 printf("%u.%01u us", ((unsigned int) duration/1000),
132 ((unsigned int) (duration%1000)/100));
134 printf("%lu ns", duration);
141 static int get_boost_mode(unsigned int cpu)
143 int support, active, b_states = 0, ret, pstate_no, i;
144 /* ToDo: Make this more global */
145 unsigned long pstates[MAX_HW_PSTATES] = {0,};
147 if (cpupower_cpu_info.vendor != X86_VENDOR_AMD &&
148 cpupower_cpu_info.vendor != X86_VENDOR_INTEL)
151 ret = cpufreq_has_boost_support(cpu, &support, &active, &b_states);
153 printf(_("Error while evaluating Boost Capabilities"
154 " on CPU %d -- are you root?\n"), cpu);
157 /* P state changes via MSR are identified via cpuid 80000007
158 on Intel and AMD, but we assume boost capable machines can do that
159 if (cpuid_eax(0x80000000) >= 0x80000007
160 && (cpuid_edx(0x80000007) & (1 << 7)))
163 printf(_(" boost state support:\n"));
165 printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
166 printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
168 if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
169 cpupower_cpu_info.family >= 0x10) {
170 ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
171 pstates, &pstate_no);
175 printf(_(" Boost States: %d\n"), b_states);
176 printf(_(" Total States: %d\n"), pstate_no);
177 for (i = 0; i < pstate_no; i++) {
179 printf(_(" Pstate-Pb%d: %luMHz (boost state)"
180 "\n"), i, pstates[i]);
182 printf(_(" Pstate-P%d: %luMHz\n"),
183 i - b_states, pstates[i]);
185 } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO) {
187 unsigned long long intel_turbo_ratio = 0;
190 /* Any way to autodetect this ? */
191 if (cpupower_cpu_info.caps & CPUPOWER_CAP_IS_SNB)
195 intel_turbo_ratio = msr_intel_get_turbo_ratio(cpu);
196 dprint (" Ratio: 0x%llx - bclk: %f\n",
197 intel_turbo_ratio, bclk);
199 ratio = (intel_turbo_ratio >> 24) & 0xFF;
201 printf(_(" %.0f MHz max turbo 4 active cores\n"),
204 ratio = (intel_turbo_ratio >> 16) & 0xFF;
206 printf(_(" %.0f MHz max turbo 3 active cores\n"),
209 ratio = (intel_turbo_ratio >> 8) & 0xFF;
211 printf(_(" %.0f MHz max turbo 2 active cores\n"),
214 ratio = (intel_turbo_ratio >> 0) & 0xFF;
216 printf(_(" %.0f MHz max turbo 1 active cores\n"),
222 static void debug_output_one(unsigned int cpu)
225 struct cpufreq_affected_cpus *cpus;
226 struct cpufreq_available_frequencies *freqs;
227 unsigned long min, max, freq_kernel, freq_hardware;
228 unsigned long total_trans, latency;
229 unsigned long long total_time;
230 struct cpufreq_policy *policy;
231 struct cpufreq_available_governors *governors;
232 struct cpufreq_stats *stats;
234 if (cpufreq_cpu_exists(cpu))
237 freq_kernel = cpufreq_get_freq_kernel(cpu);
238 freq_hardware = cpufreq_get_freq_hardware(cpu);
240 driver = cpufreq_get_driver(cpu);
242 printf(_(" no or unknown cpufreq driver is active on this CPU\n"));
244 printf(_(" driver: %s\n"), driver);
245 cpufreq_put_driver(driver);
248 cpus = cpufreq_get_related_cpus(cpu);
250 printf(_(" CPUs which run at the same hardware frequency: "));
252 printf("%d ", cpus->cpu);
255 printf("%d\n", cpus->cpu);
256 cpufreq_put_related_cpus(cpus);
259 cpus = cpufreq_get_affected_cpus(cpu);
261 printf(_(" CPUs which need to have their frequency coordinated by software: "));
263 printf("%d ", cpus->cpu);
266 printf("%d\n", cpus->cpu);
267 cpufreq_put_affected_cpus(cpus);
270 latency = cpufreq_get_transition_latency(cpu);
272 printf(_(" maximum transition latency: "));
273 print_duration(latency);
277 if (!(cpufreq_get_hardware_limits(cpu, &min, &max))) {
278 printf(_(" hardware limits: "));
285 freqs = cpufreq_get_available_frequencies(cpu);
287 printf(_(" available frequency steps: "));
288 while (freqs->next) {
289 print_speed(freqs->frequency);
293 print_speed(freqs->frequency);
295 cpufreq_put_available_frequencies(freqs);
298 governors = cpufreq_get_available_governors(cpu);
300 printf(_(" available cpufreq governors: "));
301 while (governors->next) {
302 printf("%s, ", governors->governor);
303 governors = governors->next;
305 printf("%s\n", governors->governor);
306 cpufreq_put_available_governors(governors);
309 policy = cpufreq_get_policy(cpu);
311 printf(_(" current policy: frequency should be within "));
312 print_speed(policy->min);
314 print_speed(policy->max);
317 printf(_("The governor \"%s\" may"
318 " decide which speed to use\n within this range.\n"),
320 cpufreq_put_policy(policy);
323 if (freq_kernel || freq_hardware) {
324 printf(_(" current CPU frequency is "));
326 print_speed(freq_hardware);
327 printf(_(" (asserted by call to hardware)"));
329 print_speed(freq_kernel);
332 stats = cpufreq_get_stats(cpu, &total_time);
334 printf(_(" cpufreq stats: "));
336 print_speed(stats->frequency);
337 printf(":%.2f%%", (100.0 * stats->time_in_state) / total_time);
342 cpufreq_put_stats(stats);
343 total_trans = cpufreq_get_transitions(cpu);
345 printf(" (%lu)\n", total_trans);
355 static int get_freq_kernel(unsigned int cpu, unsigned int human)
357 unsigned long freq = cpufreq_get_freq_kernel(cpu);
364 printf("%lu\n", freq);
371 static int get_freq_hardware(unsigned int cpu, unsigned int human)
373 unsigned long freq = cpufreq_get_freq_hardware(cpu);
380 printf("%lu\n", freq);
384 /* --hwlimits / -l */
386 static int get_hardware_limits(unsigned int cpu)
388 unsigned long min, max;
389 if (cpufreq_get_hardware_limits(cpu, &min, &max))
391 printf("%lu %lu\n", min, max);
397 static int get_driver(unsigned int cpu)
399 char *driver = cpufreq_get_driver(cpu);
402 printf("%s\n", driver);
403 cpufreq_put_driver(driver);
409 static int get_policy(unsigned int cpu)
411 struct cpufreq_policy *policy = cpufreq_get_policy(cpu);
414 printf("%lu %lu %s\n", policy->min, policy->max, policy->governor);
415 cpufreq_put_policy(policy);
419 /* --governors / -g */
421 static int get_available_governors(unsigned int cpu)
423 struct cpufreq_available_governors *governors =
424 cpufreq_get_available_governors(cpu);
428 while (governors->next) {
429 printf("%s ", governors->governor);
430 governors = governors->next;
432 printf("%s\n", governors->governor);
433 cpufreq_put_available_governors(governors);
438 /* --affected-cpus / -a */
440 static int get_affected_cpus(unsigned int cpu)
442 struct cpufreq_affected_cpus *cpus = cpufreq_get_affected_cpus(cpu);
447 printf("%d ", cpus->cpu);
450 printf("%d\n", cpus->cpu);
451 cpufreq_put_affected_cpus(cpus);
455 /* --related-cpus / -r */
457 static int get_related_cpus(unsigned int cpu)
459 struct cpufreq_affected_cpus *cpus = cpufreq_get_related_cpus(cpu);
464 printf("%d ", cpus->cpu);
467 printf("%d\n", cpus->cpu);
468 cpufreq_put_related_cpus(cpus);
474 static int get_freq_stats(unsigned int cpu, unsigned int human)
476 unsigned long total_trans = cpufreq_get_transitions(cpu);
477 unsigned long long total_time;
478 struct cpufreq_stats *stats = cpufreq_get_stats(cpu, &total_time);
481 print_speed(stats->frequency);
483 (100.0 * stats->time_in_state) / total_time);
486 stats->frequency, stats->time_in_state);
491 cpufreq_put_stats(stats);
493 printf(" (%lu)\n", total_trans);
499 static int get_latency(unsigned int cpu, unsigned int human)
501 unsigned long latency = cpufreq_get_transition_latency(cpu);
506 print_duration(latency);
509 printf("%lu\n", latency);
513 static struct option info_opts[] = {
514 { .name = "debug", .has_arg = no_argument, .flag = NULL, .val = 'e'},
515 { .name = "boost", .has_arg = no_argument, .flag = NULL, .val = 'b'},
516 { .name = "freq", .has_arg = no_argument, .flag = NULL, .val = 'f'},
517 { .name = "hwfreq", .has_arg = no_argument, .flag = NULL, .val = 'w'},
518 { .name = "hwlimits", .has_arg = no_argument, .flag = NULL, .val = 'l'},
519 { .name = "driver", .has_arg = no_argument, .flag = NULL, .val = 'd'},
520 { .name = "policy", .has_arg = no_argument, .flag = NULL, .val = 'p'},
521 { .name = "governors", .has_arg = no_argument, .flag = NULL, .val = 'g'},
522 { .name = "related-cpus", .has_arg = no_argument, .flag = NULL, .val = 'r'},
523 { .name = "affected-cpus",.has_arg = no_argument, .flag = NULL, .val = 'a'},
524 { .name = "stats", .has_arg = no_argument, .flag = NULL, .val = 's'},
525 { .name = "latency", .has_arg = no_argument, .flag = NULL, .val = 'y'},
526 { .name = "proc", .has_arg = no_argument, .flag = NULL, .val = 'o'},
527 { .name = "human", .has_arg = no_argument, .flag = NULL, .val = 'm'},
531 int cmd_freq_info(int argc, char **argv)
534 extern int optind, opterr, optopt;
535 int ret = 0, cont = 1;
536 unsigned int cpu = 0;
537 unsigned int human = 0;
538 int output_param = 0;
541 ret = getopt_long(argc, argv, "oefwldpgrasmyb", info_opts, NULL);
579 fprintf(stderr, "invalid or unknown argument\n");
584 switch (output_param) {
586 if (!bitmask_isallclear(cpus_chosen)) {
587 printf(_("The argument passed to this tool can't be "
588 "combined with passing a --cpu argument\n"));
598 /* Default is: show output of CPU 0 only */
599 if (bitmask_isallclear(cpus_chosen))
600 bitmask_setbit(cpus_chosen, 0);
602 switch (output_param) {
604 printf(_("You can't specify more than one --cpu parameter and/or\n"
605 "more than one output-specific argument\n"));
608 printf(_("invalid or unknown argument\n"));
611 proc_cpufreq_output();
615 for (cpu = bitmask_first(cpus_chosen);
616 cpu <= bitmask_last(cpus_chosen); cpu++) {
618 if (!bitmask_isbitset(cpus_chosen, cpu))
620 if (cpufreq_cpu_exists(cpu)) {
621 printf(_("couldn't analyze CPU %d as it doesn't seem to be present\n"), cpu);
624 printf(_("analyzing CPU %d:\n"), cpu);
626 switch (output_param) {
631 debug_output_one(cpu);
634 ret = get_affected_cpus(cpu);
637 ret = get_related_cpus(cpu);
640 ret = get_available_governors(cpu);
643 ret = get_policy(cpu);
646 ret = get_driver(cpu);
649 ret = get_hardware_limits(cpu);
652 ret = get_freq_hardware(cpu, human);
655 ret = get_freq_kernel(cpu, human);
658 ret = get_freq_stats(cpu, human);
661 ret = get_latency(cpu, human);