![Dominik Brodowski](/assets/img/avatar_default.png)
Instead of printing something non-formatted to stdout, call man(1) to show the man page for the proper subcommand. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
441 lines
9.7 KiB
C
441 lines
9.7 KiB
C
/*
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* (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
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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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* Output format inspired by Len Brown's <lenb@kernel.org> turbostat tool.
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*
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <libgen.h>
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#include "idle_monitor/cpupower-monitor.h"
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#include "idle_monitor/idle_monitors.h"
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#include "helpers/helpers.h"
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/* Define pointers to all monitors. */
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#define DEF(x) & x ## _monitor ,
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struct cpuidle_monitor *all_monitors[] = {
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#include "idle_monitors.def"
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0
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};
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static struct cpuidle_monitor *monitors[MONITORS_MAX];
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static unsigned int avail_monitors;
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static char *progname;
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enum operation_mode_e { list = 1, show, show_all };
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static int mode;
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static int interval = 1;
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static char *show_monitors_param;
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static struct cpupower_topology cpu_top;
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/* ToDo: Document this in the manpage */
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static char range_abbr[RANGE_MAX] = { 'T', 'C', 'P', 'M', };
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static void print_wrong_arg_exit(void)
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{
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printf(_("invalid or unknown argument\n"));
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exit(EXIT_FAILURE);
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}
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long long timespec_diff_us(struct timespec start, struct timespec end)
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{
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struct timespec temp;
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if ((end.tv_nsec - start.tv_nsec) < 0) {
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temp.tv_sec = end.tv_sec - start.tv_sec - 1;
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temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
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} else {
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temp.tv_sec = end.tv_sec - start.tv_sec;
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temp.tv_nsec = end.tv_nsec - start.tv_nsec;
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}
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return (temp.tv_sec * 1000000) + (temp.tv_nsec / 1000);
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}
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void print_n_spaces(int n)
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{
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int x;
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for (x = 0; x < n; x++)
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printf(" ");
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}
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/* size of s must be at least n + 1 */
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int fill_string_with_spaces(char *s, int n)
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{
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int len = strlen(s);
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if (len > n)
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return -1;
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for (; len < n; len++)
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s[len] = ' ';
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s[len] = '\0';
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return 0;
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}
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void print_header(int topology_depth)
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{
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int unsigned mon;
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int state, need_len, pr_mon_len;
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cstate_t s;
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char buf[128] = "";
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int percent_width = 4;
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fill_string_with_spaces(buf, topology_depth * 5 - 1);
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printf("%s|", buf);
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for (mon = 0; mon < avail_monitors; mon++) {
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pr_mon_len = 0;
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need_len = monitors[mon]->hw_states_num * (percent_width + 3)
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- 1;
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if (mon != 0) {
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printf("|| ");
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need_len--;
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}
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sprintf(buf, "%s", monitors[mon]->name);
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fill_string_with_spaces(buf, need_len);
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printf("%s", buf);
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}
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printf("\n");
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if (topology_depth > 2)
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printf("PKG |");
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if (topology_depth > 1)
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printf("CORE|");
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if (topology_depth > 0)
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printf("CPU |");
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for (mon = 0; mon < avail_monitors; mon++) {
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if (mon != 0)
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printf("|| ");
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else
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printf(" ");
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for (state = 0; state < monitors[mon]->hw_states_num; state++) {
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if (state != 0)
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printf(" | ");
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s = monitors[mon]->hw_states[state];
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sprintf(buf, "%s", s.name);
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fill_string_with_spaces(buf, percent_width);
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printf("%s", buf);
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}
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printf(" ");
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}
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printf("\n");
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}
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void print_results(int topology_depth, int cpu)
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{
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unsigned int mon;
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int state, ret;
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double percent;
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unsigned long long result;
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cstate_t s;
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/* Be careful CPUs may got resorted for pkg value do not just use cpu */
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if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu))
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return;
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if (topology_depth > 2)
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printf("%4d|", cpu_top.core_info[cpu].pkg);
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if (topology_depth > 1)
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printf("%4d|", cpu_top.core_info[cpu].core);
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if (topology_depth > 0)
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printf("%4d|", cpu_top.core_info[cpu].cpu);
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for (mon = 0; mon < avail_monitors; mon++) {
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if (mon != 0)
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printf("||");
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for (state = 0; state < monitors[mon]->hw_states_num; state++) {
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if (state != 0)
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printf("|");
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s = monitors[mon]->hw_states[state];
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if (s.get_count_percent) {
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ret = s.get_count_percent(s.id, &percent,
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cpu_top.core_info[cpu].cpu);
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if (ret)
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printf("******");
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else if (percent >= 100.0)
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printf("%6.1f", percent);
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else
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printf("%6.2f", percent);
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} else if (s.get_count) {
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ret = s.get_count(s.id, &result,
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cpu_top.core_info[cpu].cpu);
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if (ret)
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printf("******");
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else
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printf("%6llu", result);
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} else {
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printf(_("Monitor %s, Counter %s has no count "
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"function. Implementation error\n"),
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monitors[mon]->name, s.name);
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exit(EXIT_FAILURE);
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}
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}
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}
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/*
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* The monitor could still provide useful data, for example
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* AMD HW counters partly sit in PCI config space.
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* It's up to the monitor plug-in to check .is_online, this one
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* is just for additional info.
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*/
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if (!cpu_top.core_info[cpu].is_online) {
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printf(_(" *is offline\n"));
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return;
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} else
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printf("\n");
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}
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/* param: string passed by -m param (The list of monitors to show)
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*
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* Monitors must have been registered already, matching monitors
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* are picked out and available monitors array is overridden
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* with matching ones
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*
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* Monitors get sorted in the same order the user passes them
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*/
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static void parse_monitor_param(char *param)
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{
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unsigned int num;
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int mon, hits = 0;
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char *tmp = param, *token;
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struct cpuidle_monitor *tmp_mons[MONITORS_MAX];
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for (mon = 0; mon < MONITORS_MAX; mon++, tmp = NULL) {
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token = strtok(tmp, ",");
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if (token == NULL)
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break;
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if (strlen(token) >= MONITOR_NAME_LEN) {
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printf(_("%s: max monitor name length"
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" (%d) exceeded\n"), token, MONITOR_NAME_LEN);
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continue;
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}
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for (num = 0; num < avail_monitors; num++) {
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if (!strcmp(monitors[num]->name, token)) {
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dprint("Found requested monitor: %s\n", token);
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tmp_mons[hits] = monitors[num];
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hits++;
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}
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}
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}
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if (hits == 0) {
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printf(_("No matching monitor found in %s, "
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"try -l option\n"), param);
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exit(EXIT_FAILURE);
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}
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/* Override detected/registerd monitors array with requested one */
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memcpy(monitors, tmp_mons,
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sizeof(struct cpuidle_monitor *) * MONITORS_MAX);
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avail_monitors = hits;
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}
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void list_monitors(void)
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{
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unsigned int mon;
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int state;
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cstate_t s;
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for (mon = 0; mon < avail_monitors; mon++) {
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printf(_("Monitor \"%s\" (%d states) - Might overflow after %u "
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"s\n"),
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monitors[mon]->name, monitors[mon]->hw_states_num,
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monitors[mon]->overflow_s);
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for (state = 0; state < monitors[mon]->hw_states_num; state++) {
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s = monitors[mon]->hw_states[state];
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/*
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* ToDo show more state capabilities:
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* percent, time (granlarity)
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*/
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printf("%s\t[%c] -> %s\n", s.name, range_abbr[s.range],
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gettext(s.desc));
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}
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}
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}
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int fork_it(char **argv)
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{
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int status;
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unsigned int num;
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unsigned long long timediff;
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pid_t child_pid;
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struct timespec start, end;
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child_pid = fork();
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clock_gettime(CLOCK_REALTIME, &start);
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for (num = 0; num < avail_monitors; num++)
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monitors[num]->start();
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if (!child_pid) {
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/* child */
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execvp(argv[0], argv);
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} else {
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/* parent */
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if (child_pid == -1) {
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perror("fork");
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exit(1);
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}
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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if (waitpid(child_pid, &status, 0) == -1) {
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perror("wait");
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exit(1);
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}
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}
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clock_gettime(CLOCK_REALTIME, &end);
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for (num = 0; num < avail_monitors; num++)
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monitors[num]->stop();
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timediff = timespec_diff_us(start, end);
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if (WIFEXITED(status))
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printf(_("%s took %.5f seconds and exited with status %d\n"),
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argv[0], timediff / (1000.0 * 1000),
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WEXITSTATUS(status));
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return 0;
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}
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int do_interval_measure(int i)
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{
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unsigned int num;
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for (num = 0; num < avail_monitors; num++) {
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dprint("HW C-state residency monitor: %s - States: %d\n",
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monitors[num]->name, monitors[num]->hw_states_num);
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monitors[num]->start();
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}
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sleep(i);
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for (num = 0; num < avail_monitors; num++)
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monitors[num]->stop();
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return 0;
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}
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static void cmdline(int argc, char *argv[])
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{
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int opt;
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progname = basename(argv[0]);
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while ((opt = getopt(argc, argv, "+li:m:")) != -1) {
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switch (opt) {
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case 'l':
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if (mode)
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print_wrong_arg_exit();
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mode = list;
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break;
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case 'i':
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/* only allow -i with -m or no option */
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if (mode && mode != show)
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print_wrong_arg_exit();
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interval = atoi(optarg);
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break;
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case 'm':
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if (mode)
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print_wrong_arg_exit();
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mode = show;
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show_monitors_param = optarg;
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break;
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default:
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print_wrong_arg_exit();
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}
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}
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if (!mode)
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mode = show_all;
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}
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int cmd_monitor(int argc, char **argv)
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{
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unsigned int num;
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struct cpuidle_monitor *test_mon;
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int cpu;
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cmdline(argc, argv);
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cpu_count = get_cpu_topology(&cpu_top);
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if (cpu_count < 0) {
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printf(_("Cannot read number of available processors\n"));
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return EXIT_FAILURE;
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}
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/* Default is: monitor all CPUs */
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if (bitmask_isallclear(cpus_chosen))
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bitmask_setall(cpus_chosen);
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dprint("System has up to %d CPU cores\n", cpu_count);
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for (num = 0; all_monitors[num]; num++) {
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dprint("Try to register: %s\n", all_monitors[num]->name);
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test_mon = all_monitors[num]->do_register();
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if (test_mon) {
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if (test_mon->needs_root && !run_as_root) {
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fprintf(stderr, _("Available monitor %s needs "
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"root access\n"), test_mon->name);
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continue;
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}
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monitors[avail_monitors] = test_mon;
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dprint("%s registered\n", all_monitors[num]->name);
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avail_monitors++;
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}
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}
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if (avail_monitors == 0) {
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printf(_("No HW Cstate monitors found\n"));
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return 1;
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}
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if (mode == list) {
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list_monitors();
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exit(EXIT_SUCCESS);
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}
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if (mode == show)
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parse_monitor_param(show_monitors_param);
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dprint("Packages: %d - Cores: %d - CPUs: %d\n",
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cpu_top.pkgs, cpu_top.cores, cpu_count);
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/*
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* if any params left, it must be a command to fork
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*/
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if (argc - optind)
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fork_it(argv + optind);
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else
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do_interval_measure(interval);
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/* ToDo: Topology parsing needs fixing first to do
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this more generically */
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if (cpu_top.pkgs > 1)
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print_header(3);
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else
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print_header(1);
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for (cpu = 0; cpu < cpu_count; cpu++) {
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if (cpu_top.pkgs > 1)
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print_results(3, cpu);
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else
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print_results(1, cpu);
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}
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for (num = 0; num < avail_monitors; num++)
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monitors[num]->unregister();
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cpu_topology_release(cpu_top);
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return 0;
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}
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