669 lines
15 KiB
C
669 lines
15 KiB
C
/*
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* (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
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*
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* Licensed under the terms of the GNU GPL License version 2.
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include "cpufreq.h"
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#include "helpers/helpers.h"
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#include "helpers/bitmask.h"
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#define LINE_LEN 10
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static unsigned int count_cpus(void)
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{
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FILE *fp;
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char value[LINE_LEN];
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unsigned int ret = 0;
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unsigned int cpunr = 0;
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fp = fopen("/proc/stat", "r");
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if (!fp) {
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printf(_("Couldn't count the number of CPUs (%s: %s), assuming 1\n"), "/proc/stat", strerror(errno));
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return 1;
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}
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while (!feof(fp)) {
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if (!fgets(value, LINE_LEN, fp))
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continue;
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value[LINE_LEN - 1] = '\0';
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if (strlen(value) < (LINE_LEN - 2))
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continue;
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if (strstr(value, "cpu "))
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continue;
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if (sscanf(value, "cpu%d ", &cpunr) != 1)
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continue;
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if (cpunr > ret)
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ret = cpunr;
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}
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fclose(fp);
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/* cpu count starts from 0, on error return 1 (UP) */
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return ret + 1;
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}
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static void proc_cpufreq_output(void)
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{
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unsigned int cpu, nr_cpus;
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struct cpufreq_policy *policy;
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unsigned int min_pctg = 0;
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unsigned int max_pctg = 0;
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unsigned long min, max;
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printf(_(" minimum CPU frequency - maximum CPU frequency - governor\n"));
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nr_cpus = count_cpus();
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for (cpu = 0; cpu < nr_cpus; cpu++) {
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policy = cpufreq_get_policy(cpu);
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if (!policy)
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continue;
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if (cpufreq_get_hardware_limits(cpu, &min, &max)) {
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max = 0;
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} else {
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min_pctg = (policy->min * 100) / max;
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max_pctg = (policy->max * 100) / max;
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}
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printf("CPU%3d %9lu kHz (%3d %%) - %9lu kHz (%3d %%) - %s\n",
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cpu , policy->min, max ? min_pctg : 0, policy->max,
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max ? max_pctg : 0, policy->governor);
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cpufreq_put_policy(policy);
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}
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}
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static void print_speed(unsigned long speed)
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{
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unsigned long tmp;
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if (speed > 1000000) {
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tmp = speed % 10000;
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if (tmp >= 5000)
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speed += 10000;
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printf("%u.%02u GHz", ((unsigned int) speed/1000000),
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((unsigned int) (speed%1000000)/10000));
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} else if (speed > 100000) {
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tmp = speed % 1000;
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if (tmp >= 500)
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speed += 1000;
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printf("%u MHz", ((unsigned int) speed / 1000));
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} else if (speed > 1000) {
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tmp = speed % 100;
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if (tmp >= 50)
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speed += 100;
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printf("%u.%01u MHz", ((unsigned int) speed/1000),
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((unsigned int) (speed%1000)/100));
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} else
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printf("%lu kHz", speed);
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return;
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}
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static void print_duration(unsigned long duration)
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{
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unsigned long tmp;
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if (duration > 1000000) {
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tmp = duration % 10000;
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if (tmp >= 5000)
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duration += 10000;
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printf("%u.%02u ms", ((unsigned int) duration/1000000),
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((unsigned int) (duration%1000000)/10000));
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} else if (duration > 100000) {
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tmp = duration % 1000;
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if (tmp >= 500)
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duration += 1000;
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printf("%u us", ((unsigned int) duration / 1000));
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} else if (duration > 1000) {
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tmp = duration % 100;
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if (tmp >= 50)
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duration += 100;
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printf("%u.%01u us", ((unsigned int) duration/1000),
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((unsigned int) (duration%1000)/100));
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} else
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printf("%lu ns", duration);
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return;
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}
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/* --boost / -b */
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static int get_boost_mode(unsigned int cpu)
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{
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int support, active, b_states = 0, ret, pstate_no, i;
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/* ToDo: Make this more global */
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unsigned long pstates[MAX_HW_PSTATES] = {0,};
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if (cpupower_cpu_info.vendor != X86_VENDOR_AMD &&
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cpupower_cpu_info.vendor != X86_VENDOR_INTEL)
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return 0;
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ret = cpufreq_has_boost_support(cpu, &support, &active, &b_states);
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if (ret) {
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printf(_("Error while evaluating Boost Capabilities"
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" on CPU %d -- are you root?\n"), cpu);
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return ret;
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}
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/* P state changes via MSR are identified via cpuid 80000007
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on Intel and AMD, but we assume boost capable machines can do that
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if (cpuid_eax(0x80000000) >= 0x80000007
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&& (cpuid_edx(0x80000007) & (1 << 7)))
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*/
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printf(_(" boost state support:\n"));
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printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
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printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
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if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
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cpupower_cpu_info.family >= 0x10) {
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ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
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pstates, &pstate_no);
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if (ret)
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return ret;
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printf(_(" Boost States: %d\n"), b_states);
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printf(_(" Total States: %d\n"), pstate_no);
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for (i = 0; i < pstate_no; i++) {
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if (i < b_states)
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printf(_(" Pstate-Pb%d: %luMHz (boost state)"
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"\n"), i, pstates[i]);
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else
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printf(_(" Pstate-P%d: %luMHz\n"),
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i - b_states, pstates[i]);
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}
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} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO) {
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double bclk;
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unsigned long long intel_turbo_ratio = 0;
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unsigned int ratio;
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/* Any way to autodetect this ? */
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if (cpupower_cpu_info.caps & CPUPOWER_CAP_IS_SNB)
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bclk = 100.00;
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else
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bclk = 133.33;
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intel_turbo_ratio = msr_intel_get_turbo_ratio(cpu);
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dprint (" Ratio: 0x%llx - bclk: %f\n",
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intel_turbo_ratio, bclk);
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ratio = (intel_turbo_ratio >> 24) & 0xFF;
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if (ratio)
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printf(_(" %.0f MHz max turbo 4 active cores\n"),
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ratio * bclk);
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ratio = (intel_turbo_ratio >> 16) & 0xFF;
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if (ratio)
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printf(_(" %.0f MHz max turbo 3 active cores\n"),
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ratio * bclk);
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ratio = (intel_turbo_ratio >> 8) & 0xFF;
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if (ratio)
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printf(_(" %.0f MHz max turbo 2 active cores\n"),
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ratio * bclk);
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ratio = (intel_turbo_ratio >> 0) & 0xFF;
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if (ratio)
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printf(_(" %.0f MHz max turbo 1 active cores\n"),
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ratio * bclk);
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}
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return 0;
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}
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static void debug_output_one(unsigned int cpu)
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{
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char *driver;
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struct cpufreq_affected_cpus *cpus;
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struct cpufreq_available_frequencies *freqs;
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unsigned long min, max, freq_kernel, freq_hardware;
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unsigned long total_trans, latency;
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unsigned long long total_time;
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struct cpufreq_policy *policy;
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struct cpufreq_available_governors *governors;
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struct cpufreq_stats *stats;
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if (cpufreq_cpu_exists(cpu))
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return;
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freq_kernel = cpufreq_get_freq_kernel(cpu);
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freq_hardware = cpufreq_get_freq_hardware(cpu);
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driver = cpufreq_get_driver(cpu);
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if (!driver) {
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printf(_(" no or unknown cpufreq driver is active on this CPU\n"));
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} else {
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printf(_(" driver: %s\n"), driver);
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cpufreq_put_driver(driver);
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}
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cpus = cpufreq_get_related_cpus(cpu);
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if (cpus) {
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printf(_(" CPUs which run at the same hardware frequency: "));
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while (cpus->next) {
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printf("%d ", cpus->cpu);
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cpus = cpus->next;
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}
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printf("%d\n", cpus->cpu);
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cpufreq_put_related_cpus(cpus);
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}
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cpus = cpufreq_get_affected_cpus(cpu);
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if (cpus) {
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printf(_(" CPUs which need to have their frequency coordinated by software: "));
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while (cpus->next) {
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printf("%d ", cpus->cpu);
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cpus = cpus->next;
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}
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printf("%d\n", cpus->cpu);
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cpufreq_put_affected_cpus(cpus);
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}
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latency = cpufreq_get_transition_latency(cpu);
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if (latency) {
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printf(_(" maximum transition latency: "));
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print_duration(latency);
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printf(".\n");
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}
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if (!(cpufreq_get_hardware_limits(cpu, &min, &max))) {
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printf(_(" hardware limits: "));
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print_speed(min);
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printf(" - ");
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print_speed(max);
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printf("\n");
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}
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freqs = cpufreq_get_available_frequencies(cpu);
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if (freqs) {
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printf(_(" available frequency steps: "));
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while (freqs->next) {
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print_speed(freqs->frequency);
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printf(", ");
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freqs = freqs->next;
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}
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print_speed(freqs->frequency);
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printf("\n");
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cpufreq_put_available_frequencies(freqs);
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}
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governors = cpufreq_get_available_governors(cpu);
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if (governors) {
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printf(_(" available cpufreq governors: "));
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while (governors->next) {
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printf("%s, ", governors->governor);
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governors = governors->next;
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}
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printf("%s\n", governors->governor);
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cpufreq_put_available_governors(governors);
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}
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policy = cpufreq_get_policy(cpu);
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if (policy) {
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printf(_(" current policy: frequency should be within "));
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print_speed(policy->min);
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printf(_(" and "));
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print_speed(policy->max);
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printf(".\n ");
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printf(_("The governor \"%s\" may"
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" decide which speed to use\n within this range.\n"),
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policy->governor);
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cpufreq_put_policy(policy);
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}
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if (freq_kernel || freq_hardware) {
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printf(_(" current CPU frequency is "));
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if (freq_hardware) {
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print_speed(freq_hardware);
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printf(_(" (asserted by call to hardware)"));
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} else
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print_speed(freq_kernel);
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printf(".\n");
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}
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stats = cpufreq_get_stats(cpu, &total_time);
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if (stats) {
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printf(_(" cpufreq stats: "));
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while (stats) {
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print_speed(stats->frequency);
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printf(":%.2f%%", (100.0 * stats->time_in_state) / total_time);
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stats = stats->next;
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if (stats)
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printf(", ");
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}
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cpufreq_put_stats(stats);
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total_trans = cpufreq_get_transitions(cpu);
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if (total_trans)
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printf(" (%lu)\n", total_trans);
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else
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printf("\n");
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}
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get_boost_mode(cpu);
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}
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/* --freq / -f */
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static int get_freq_kernel(unsigned int cpu, unsigned int human)
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{
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unsigned long freq = cpufreq_get_freq_kernel(cpu);
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if (!freq)
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return -EINVAL;
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if (human) {
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print_speed(freq);
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printf("\n");
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} else
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printf("%lu\n", freq);
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return 0;
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}
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/* --hwfreq / -w */
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static int get_freq_hardware(unsigned int cpu, unsigned int human)
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{
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unsigned long freq = cpufreq_get_freq_hardware(cpu);
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if (!freq)
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return -EINVAL;
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if (human) {
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print_speed(freq);
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printf("\n");
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} else
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printf("%lu\n", freq);
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return 0;
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}
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/* --hwlimits / -l */
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static int get_hardware_limits(unsigned int cpu)
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{
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unsigned long min, max;
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if (cpufreq_get_hardware_limits(cpu, &min, &max))
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return -EINVAL;
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printf("%lu %lu\n", min, max);
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return 0;
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}
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/* --driver / -d */
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static int get_driver(unsigned int cpu)
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{
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char *driver = cpufreq_get_driver(cpu);
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if (!driver)
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return -EINVAL;
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printf("%s\n", driver);
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cpufreq_put_driver(driver);
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return 0;
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}
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/* --policy / -p */
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static int get_policy(unsigned int cpu)
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{
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struct cpufreq_policy *policy = cpufreq_get_policy(cpu);
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if (!policy)
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return -EINVAL;
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printf("%lu %lu %s\n", policy->min, policy->max, policy->governor);
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cpufreq_put_policy(policy);
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return 0;
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}
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/* --governors / -g */
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static int get_available_governors(unsigned int cpu)
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{
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struct cpufreq_available_governors *governors =
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cpufreq_get_available_governors(cpu);
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if (!governors)
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return -EINVAL;
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while (governors->next) {
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printf("%s ", governors->governor);
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governors = governors->next;
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}
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printf("%s\n", governors->governor);
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cpufreq_put_available_governors(governors);
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return 0;
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}
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/* --affected-cpus / -a */
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static int get_affected_cpus(unsigned int cpu)
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{
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struct cpufreq_affected_cpus *cpus = cpufreq_get_affected_cpus(cpu);
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if (!cpus)
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return -EINVAL;
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while (cpus->next) {
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printf("%d ", cpus->cpu);
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cpus = cpus->next;
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}
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printf("%d\n", cpus->cpu);
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cpufreq_put_affected_cpus(cpus);
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return 0;
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}
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/* --related-cpus / -r */
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static int get_related_cpus(unsigned int cpu)
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{
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struct cpufreq_affected_cpus *cpus = cpufreq_get_related_cpus(cpu);
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if (!cpus)
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return -EINVAL;
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while (cpus->next) {
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printf("%d ", cpus->cpu);
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cpus = cpus->next;
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}
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printf("%d\n", cpus->cpu);
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cpufreq_put_related_cpus(cpus);
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return 0;
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}
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/* --stats / -s */
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static int get_freq_stats(unsigned int cpu, unsigned int human)
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{
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unsigned long total_trans = cpufreq_get_transitions(cpu);
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unsigned long long total_time;
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struct cpufreq_stats *stats = cpufreq_get_stats(cpu, &total_time);
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while (stats) {
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if (human) {
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print_speed(stats->frequency);
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printf(":%.2f%%",
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(100.0 * stats->time_in_state) / total_time);
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} else
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printf("%lu:%llu",
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stats->frequency, stats->time_in_state);
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stats = stats->next;
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if (stats)
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printf(", ");
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}
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cpufreq_put_stats(stats);
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if (total_trans)
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printf(" (%lu)\n", total_trans);
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return 0;
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}
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/* --latency / -y */
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static int get_latency(unsigned int cpu, unsigned int human)
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{
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unsigned long latency = cpufreq_get_transition_latency(cpu);
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if (!latency)
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return -EINVAL;
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if (human) {
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print_duration(latency);
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printf("\n");
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} else
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printf("%lu\n", latency);
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return 0;
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}
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static struct option info_opts[] = {
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{ .name = "debug", .has_arg = no_argument, .flag = NULL, .val = 'e'},
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{ .name = "boost", .has_arg = no_argument, .flag = NULL, .val = 'b'},
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{ .name = "freq", .has_arg = no_argument, .flag = NULL, .val = 'f'},
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{ .name = "hwfreq", .has_arg = no_argument, .flag = NULL, .val = 'w'},
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{ .name = "hwlimits", .has_arg = no_argument, .flag = NULL, .val = 'l'},
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{ .name = "driver", .has_arg = no_argument, .flag = NULL, .val = 'd'},
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{ .name = "policy", .has_arg = no_argument, .flag = NULL, .val = 'p'},
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{ .name = "governors", .has_arg = no_argument, .flag = NULL, .val = 'g'},
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{ .name = "related-cpus", .has_arg = no_argument, .flag = NULL, .val = 'r'},
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{ .name = "affected-cpus",.has_arg = no_argument, .flag = NULL, .val = 'a'},
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{ .name = "stats", .has_arg = no_argument, .flag = NULL, .val = 's'},
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{ .name = "latency", .has_arg = no_argument, .flag = NULL, .val = 'y'},
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{ .name = "proc", .has_arg = no_argument, .flag = NULL, .val = 'o'},
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{ .name = "human", .has_arg = no_argument, .flag = NULL, .val = 'm'},
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{ },
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};
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int cmd_freq_info(int argc, char **argv)
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{
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extern char *optarg;
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extern int optind, opterr, optopt;
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int ret = 0, cont = 1;
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unsigned int cpu = 0;
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unsigned int human = 0;
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int output_param = 0;
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|
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do {
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ret = getopt_long(argc, argv, "oefwldpgrasmyb", info_opts, NULL);
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switch (ret) {
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case '?':
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output_param = '?';
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cont = 0;
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break;
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case -1:
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cont = 0;
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break;
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case 'b':
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case 'o':
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case 'a':
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case 'r':
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case 'g':
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case 'p':
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case 'd':
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case 'l':
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case 'w':
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case 'f':
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case 'e':
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case 's':
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case 'y':
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if (output_param) {
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output_param = -1;
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cont = 0;
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break;
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}
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output_param = ret;
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break;
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case 'm':
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if (human) {
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output_param = -1;
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cont = 0;
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|
break;
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|
}
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human = 1;
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|
break;
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default:
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fprintf(stderr, "invalid or unknown argument\n");
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return EXIT_FAILURE;
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|
}
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} while (cont);
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|
|
|
switch (output_param) {
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case 'o':
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|
if (!bitmask_isallclear(cpus_chosen)) {
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|
printf(_("The argument passed to this tool can't be "
|
|
"combined with passing a --cpu argument\n"));
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|
return -EINVAL;
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|
}
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|
break;
|
|
case 0:
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|
output_param = 'e';
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
/* Default is: show output of CPU 0 only */
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|
if (bitmask_isallclear(cpus_chosen))
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|
bitmask_setbit(cpus_chosen, 0);
|
|
|
|
switch (output_param) {
|
|
case -1:
|
|
printf(_("You can't specify more than one --cpu parameter and/or\n"
|
|
"more than one output-specific argument\n"));
|
|
return -EINVAL;
|
|
case '?':
|
|
printf(_("invalid or unknown argument\n"));
|
|
return -EINVAL;
|
|
case 'o':
|
|
proc_cpufreq_output();
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
for (cpu = bitmask_first(cpus_chosen);
|
|
cpu <= bitmask_last(cpus_chosen); cpu++) {
|
|
|
|
if (!bitmask_isbitset(cpus_chosen, cpu))
|
|
continue;
|
|
if (cpufreq_cpu_exists(cpu)) {
|
|
printf(_("couldn't analyze CPU %d as it doesn't seem to be present\n"), cpu);
|
|
continue;
|
|
}
|
|
printf(_("analyzing CPU %d:\n"), cpu);
|
|
|
|
switch (output_param) {
|
|
case 'b':
|
|
get_boost_mode(cpu);
|
|
break;
|
|
case 'e':
|
|
debug_output_one(cpu);
|
|
break;
|
|
case 'a':
|
|
ret = get_affected_cpus(cpu);
|
|
break;
|
|
case 'r':
|
|
ret = get_related_cpus(cpu);
|
|
break;
|
|
case 'g':
|
|
ret = get_available_governors(cpu);
|
|
break;
|
|
case 'p':
|
|
ret = get_policy(cpu);
|
|
break;
|
|
case 'd':
|
|
ret = get_driver(cpu);
|
|
break;
|
|
case 'l':
|
|
ret = get_hardware_limits(cpu);
|
|
break;
|
|
case 'w':
|
|
ret = get_freq_hardware(cpu, human);
|
|
break;
|
|
case 'f':
|
|
ret = get_freq_kernel(cpu, human);
|
|
break;
|
|
case 's':
|
|
ret = get_freq_stats(cpu, human);
|
|
break;
|
|
case 'y':
|
|
ret = get_latency(cpu, human);
|
|
break;
|
|
}
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return ret;
|
|
}
|