2 * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
4 * Licensed under the terms of the GNU GPL License version 2.
18 #include "helpers/sysfs.h"
19 #include "helpers/helpers.h"
20 #include "helpers/bitmask.h"
24 static unsigned int count_cpus(void)
29 unsigned int cpunr = 0;
31 fp = fopen("/proc/stat", "r");
33 printf(_("Couldn't count the number of CPUs (%s: %s), assuming 1\n"), "/proc/stat", strerror(errno));
38 if (!fgets(value, LINE_LEN, fp))
40 value[LINE_LEN - 1] = '\0';
41 if (strlen(value) < (LINE_LEN - 2))
43 if (strstr(value, "cpu "))
45 if (sscanf(value, "cpu%d ", &cpunr) != 1)
52 /* cpu count starts from 0, on error return 1 (UP) */
57 static void proc_cpufreq_output(void)
59 unsigned int cpu, nr_cpus;
60 struct cpufreq_policy *policy;
61 unsigned int min_pctg = 0;
62 unsigned int max_pctg = 0;
63 unsigned long min, max;
65 printf(_(" minimum CPU frequency - maximum CPU frequency - governor\n"));
67 nr_cpus = count_cpus();
68 for (cpu = 0; cpu < nr_cpus; cpu++) {
69 policy = cpufreq_get_policy(cpu);
73 if (cpufreq_get_hardware_limits(cpu, &min, &max)) {
76 min_pctg = (policy->min * 100) / max;
77 max_pctg = (policy->max * 100) / max;
79 printf("CPU%3d %9lu kHz (%3d %%) - %9lu kHz (%3d %%) - %s\n",
80 cpu , policy->min, max ? min_pctg : 0, policy->max,
81 max ? max_pctg : 0, policy->governor);
83 cpufreq_put_policy(policy);
87 static int no_rounding;
88 static void print_speed(unsigned long speed)
94 printf("%u.%06u GHz", ((unsigned int) speed/1000000),
95 ((unsigned int) speed%1000000));
96 else if (speed > 100000)
97 printf("%u MHz", (unsigned int) speed);
98 else if (speed > 1000)
99 printf("%u.%03u MHz", ((unsigned int) speed/1000),
100 (unsigned int) (speed%1000));
102 printf("%lu kHz", speed);
104 if (speed > 1000000) {
108 printf("%u.%02u GHz", ((unsigned int) speed/1000000),
109 ((unsigned int) (speed%1000000)/10000));
110 } else if (speed > 100000) {
114 printf("%u MHz", ((unsigned int) speed/1000));
115 } else if (speed > 1000) {
119 printf("%u.%01u MHz", ((unsigned int) speed/1000),
120 ((unsigned int) (speed%1000)/100));
127 static void print_duration(unsigned long duration)
132 if (duration > 1000000)
133 printf("%u.%06u ms", ((unsigned int) duration/1000000),
134 ((unsigned int) duration%1000000));
135 else if (duration > 100000)
136 printf("%u us", ((unsigned int) duration/1000));
137 else if (duration > 1000)
138 printf("%u.%03u us", ((unsigned int) duration/1000),
139 ((unsigned int) duration%1000));
141 printf("%lu ns", duration);
143 if (duration > 1000000) {
144 tmp = duration%10000;
147 printf("%u.%02u ms", ((unsigned int) duration/1000000),
148 ((unsigned int) (duration%1000000)/10000));
149 } else if (duration > 100000) {
153 printf("%u us", ((unsigned int) duration / 1000));
154 } else if (duration > 1000) {
158 printf("%u.%01u us", ((unsigned int) duration/1000),
159 ((unsigned int) (duration%1000)/100));
161 printf("%lu ns", duration);
168 static int get_boost_mode(unsigned int cpu)
170 int support, active, b_states = 0, ret, pstate_no, i;
171 /* ToDo: Make this more global */
172 unsigned long pstates[MAX_HW_PSTATES] = {0,};
174 if (cpupower_cpu_info.vendor != X86_VENDOR_AMD &&
175 cpupower_cpu_info.vendor != X86_VENDOR_INTEL)
178 ret = cpufreq_has_boost_support(cpu, &support, &active, &b_states);
180 printf(_("Error while evaluating Boost Capabilities"
181 " on CPU %d -- are you root?\n"), cpu);
184 /* P state changes via MSR are identified via cpuid 80000007
185 on Intel and AMD, but we assume boost capable machines can do that
186 if (cpuid_eax(0x80000000) >= 0x80000007
187 && (cpuid_edx(0x80000007) & (1 << 7)))
190 printf(_(" boost state support:\n"));
192 printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
193 printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
195 if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
196 cpupower_cpu_info.family >= 0x10) {
197 ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
198 pstates, &pstate_no);
202 printf(_(" Boost States: %d\n"), b_states);
203 printf(_(" Total States: %d\n"), pstate_no);
204 for (i = 0; i < pstate_no; i++) {
206 printf(_(" Pstate-Pb%d: %luMHz (boost state)"
207 "\n"), i, pstates[i]);
209 printf(_(" Pstate-P%d: %luMHz\n"),
210 i - b_states, pstates[i]);
212 } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO) {
214 unsigned long long intel_turbo_ratio = 0;
217 /* Any way to autodetect this ? */
218 if (cpupower_cpu_info.caps & CPUPOWER_CAP_IS_SNB)
222 intel_turbo_ratio = msr_intel_get_turbo_ratio(cpu);
223 dprint (" Ratio: 0x%llx - bclk: %f\n",
224 intel_turbo_ratio, bclk);
226 ratio = (intel_turbo_ratio >> 24) & 0xFF;
228 printf(_(" %.0f MHz max turbo 4 active cores\n"),
231 ratio = (intel_turbo_ratio >> 16) & 0xFF;
233 printf(_(" %.0f MHz max turbo 3 active cores\n"),
236 ratio = (intel_turbo_ratio >> 8) & 0xFF;
238 printf(_(" %.0f MHz max turbo 2 active cores\n"),
241 ratio = (intel_turbo_ratio >> 0) & 0xFF;
243 printf(_(" %.0f MHz max turbo 1 active cores\n"),
251 static int get_freq_kernel(unsigned int cpu, unsigned int human)
253 unsigned long freq = cpufreq_get_freq_kernel(cpu);
254 printf(_(" current CPU frequency: "));
256 printf(_(" Unable to call to kernel\n"));
263 printf(_(" (asserted by call to kernel)\n"));
270 static int get_freq_hardware(unsigned int cpu, unsigned int human)
272 unsigned long freq = cpufreq_get_freq_hardware(cpu);
273 printf(_(" current CPU frequency: "));
275 printf("Unable to call hardware\n");
282 printf(_(" (asserted by call to hardware)\n"));
286 /* --hwlimits / -l */
288 static int get_hardware_limits(unsigned int cpu)
290 unsigned long min, max;
292 printf(_(" hardware limits: "));
293 if (cpufreq_get_hardware_limits(cpu, &min, &max)) {
294 printf(_("Not Available\n"));
307 static int get_driver(unsigned int cpu)
309 char *driver = cpufreq_get_driver(cpu);
311 printf(_(" no or unknown cpufreq driver is active on this CPU\n"));
314 printf(" driver: %s\n", driver);
315 cpufreq_put_driver(driver);
321 static int get_policy(unsigned int cpu)
323 struct cpufreq_policy *policy = cpufreq_get_policy(cpu);
325 printf(_(" Unable to determine current policy\n"));
328 printf(_(" current policy: frequency should be within "));
329 print_speed(policy->min);
331 print_speed(policy->max);
334 printf(_("The governor \"%s\" may decide which speed to use\n"
335 " within this range.\n"),
337 cpufreq_put_policy(policy);
341 /* --governors / -g */
343 static int get_available_governors(unsigned int cpu)
345 struct cpufreq_available_governors *governors =
346 cpufreq_get_available_governors(cpu);
348 printf(_(" available cpufreq governors: "));
350 printf(_("Not Available\n"));
354 while (governors->next) {
355 printf("%s ", governors->governor);
356 governors = governors->next;
358 printf("%s\n", governors->governor);
359 cpufreq_put_available_governors(governors);
364 /* --affected-cpus / -a */
366 static int get_affected_cpus(unsigned int cpu)
368 struct cpufreq_affected_cpus *cpus = cpufreq_get_affected_cpus(cpu);
370 printf(_(" CPUs which need to have their frequency coordinated by software: "));
372 printf(_("Not Available\n"));
377 printf("%d ", cpus->cpu);
380 printf("%d\n", cpus->cpu);
381 cpufreq_put_affected_cpus(cpus);
385 /* --related-cpus / -r */
387 static int get_related_cpus(unsigned int cpu)
389 struct cpufreq_affected_cpus *cpus = cpufreq_get_related_cpus(cpu);
391 printf(_(" CPUs which run at the same hardware frequency: "));
393 printf(_("Not Available\n"));
398 printf("%d ", cpus->cpu);
401 printf("%d\n", cpus->cpu);
402 cpufreq_put_related_cpus(cpus);
408 static int get_freq_stats(unsigned int cpu, unsigned int human)
410 unsigned long total_trans = cpufreq_get_transitions(cpu);
411 unsigned long long total_time;
412 struct cpufreq_stats *stats = cpufreq_get_stats(cpu, &total_time);
415 print_speed(stats->frequency);
417 (100.0 * stats->time_in_state) / total_time);
420 stats->frequency, stats->time_in_state);
425 cpufreq_put_stats(stats);
427 printf(" (%lu)\n", total_trans);
433 static int get_latency(unsigned int cpu, unsigned int human)
435 unsigned long latency = cpufreq_get_transition_latency(cpu);
437 printf(_(" maximum transition latency: "));
438 if (!latency || latency == UINT_MAX) {
439 printf(_(" Cannot determine or is not supported.\n"));
444 print_duration(latency);
447 printf("%lu\n", latency);
451 static void debug_output_one(unsigned int cpu)
453 struct cpufreq_available_frequencies *freqs;
456 get_related_cpus(cpu);
457 get_affected_cpus(cpu);
459 get_hardware_limits(cpu);
461 freqs = cpufreq_get_available_frequencies(cpu);
463 printf(_(" available frequency steps: "));
464 while (freqs->next) {
465 print_speed(freqs->frequency);
469 print_speed(freqs->frequency);
471 cpufreq_put_available_frequencies(freqs);
474 get_available_governors(cpu);
476 if (get_freq_hardware(cpu, 1) < 0)
477 get_freq_kernel(cpu, 1);
481 static struct option info_opts[] = {
482 {"debug", no_argument, NULL, 'e'},
483 {"boost", no_argument, NULL, 'b'},
484 {"freq", no_argument, NULL, 'f'},
485 {"hwfreq", no_argument, NULL, 'w'},
486 {"hwlimits", no_argument, NULL, 'l'},
487 {"driver", no_argument, NULL, 'd'},
488 {"policy", no_argument, NULL, 'p'},
489 {"governors", no_argument, NULL, 'g'},
490 {"related-cpus", no_argument, NULL, 'r'},
491 {"affected-cpus", no_argument, NULL, 'a'},
492 {"stats", no_argument, NULL, 's'},
493 {"latency", no_argument, NULL, 'y'},
494 {"proc", no_argument, NULL, 'o'},
495 {"human", no_argument, NULL, 'm'},
496 {"no-rounding", no_argument, NULL, 'n'},
500 int cmd_freq_info(int argc, char **argv)
503 extern int optind, opterr, optopt;
504 int ret = 0, cont = 1;
505 unsigned int cpu = 0;
506 unsigned int human = 0;
507 int output_param = 0;
510 ret = getopt_long(argc, argv, "oefwldpgrasmybn", info_opts,
552 fprintf(stderr, "invalid or unknown argument\n");
557 switch (output_param) {
559 if (!bitmask_isallclear(cpus_chosen)) {
560 printf(_("The argument passed to this tool can't be "
561 "combined with passing a --cpu argument\n"));
571 /* Default is: show output of CPU 0 only */
572 if (bitmask_isallclear(cpus_chosen))
573 bitmask_setbit(cpus_chosen, 0);
575 switch (output_param) {
577 printf(_("You can't specify more than one --cpu parameter and/or\n"
578 "more than one output-specific argument\n"));
581 printf(_("invalid or unknown argument\n"));
584 proc_cpufreq_output();
588 for (cpu = bitmask_first(cpus_chosen);
589 cpu <= bitmask_last(cpus_chosen); cpu++) {
591 if (!bitmask_isbitset(cpus_chosen, cpu))
594 printf(_("analyzing CPU %d:\n"), cpu);
596 if (sysfs_is_cpu_online(cpu) != 1) {
597 printf(_(" *is offline\n"));
602 switch (output_param) {
607 debug_output_one(cpu);
610 ret = get_affected_cpus(cpu);
613 ret = get_related_cpus(cpu);
616 ret = get_available_governors(cpu);
619 ret = get_policy(cpu);
622 ret = get_driver(cpu);
625 ret = get_hardware_limits(cpu);
628 ret = get_freq_hardware(cpu, human);
631 ret = get_freq_kernel(cpu, human);
634 ret = get_freq_stats(cpu, human);
637 ret = get_latency(cpu, human);