powercap-info.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 *  (C) 2016 SUSE Software Solutions GmbH
  4 *           Thomas Renninger <trenn@suse.de>
  5 */
  6
  7#include <unistd.h>
  8#include <stdio.h>
  9#include <errno.h>
 10#include <stdlib.h>
 11#include <stdint.h>
 12#include <string.h>
 13
 14#include <getopt.h>
 15
 16#include "powercap.h"
 17#include "helpers/helpers.h"
 18
 19int powercap_show_all;
 20
 21static struct option info_opts[] = {
 22	{ "all",		no_argument,		 NULL,	 'a'},
 23	{ },
 24};
 25
 26static int powercap_print_one_zone(struct powercap_zone *zone)
 27{
 28	int mode, i, ret = 0;
 29	char pr_prefix[1024] = "";
 30
 31	for (i = 0; i < zone->tree_depth && i < POWERCAP_MAX_TREE_DEPTH; i++)
 32		strcat(pr_prefix, "\t");
 33
 34	printf("%sZone: %s", pr_prefix, zone->name);
 35	ret = powercap_zone_get_enabled(zone, &mode);
 36	if (ret < 0)
 37		return ret;
 38	printf(" (%s)\n", mode ? "enabled" : "disabled");
 39
 40	if (zone->has_power_uw)
 41		printf(_("%sPower can be monitored in micro Jules\n"),
 42		       pr_prefix);
 43
 44	if (zone->has_energy_uj)
 45		printf(_("%sPower can be monitored in micro Watts\n"),
 46		       pr_prefix);
 47
 48	printf("\n");
 49
 50	if (ret != 0)
 51		return ret;
 52	return ret;
 53}
 54
 55static int powercap_show(void)
 56{
 57	struct powercap_zone *root_zone;
 58	char line[MAX_LINE_LEN] = "";
 59	int ret, val;
 60
 61	ret = powercap_get_driver(line, MAX_LINE_LEN);
 62	if (ret < 0) {
 63		printf(_("No powercapping driver loaded\n"));
 64		return ret;
 65	}
 66
 67	printf("Driver: %s\n", line);
 68	ret = powercap_get_enabled(&val);
 69	if (ret < 0)
 70		return ret;
 71	if (!val) {
 72		printf(_("Powercapping is disabled\n"));
 73		return -1;
 74	}
 75
 76	printf(_("Powercap domain hierarchy:\n\n"));
 77	root_zone = powercap_init_zones();
 78
 79	if (root_zone == NULL) {
 80		printf(_("No powercap info found\n"));
 81		return 1;
 82	}
 83
 84	powercap_walk_zones(root_zone, powercap_print_one_zone);
 85
 86	return 0;
 87}
 88
 89int cmd_cap_set(int argc, char **argv)
 90{
 91	return 0;
 92};
 93int cmd_cap_info(int argc, char **argv)
 94{
 95	int ret = 0, cont = 1;
 96
 97	do {
 98		ret = getopt_long(argc, argv, "a", info_opts, NULL);
 99		switch (ret) {
100		case '?':
101			cont = 0;
102			break;
103		case -1:
104			cont = 0;
105			break;
106		case 'a':
107			powercap_show_all = 1;
108			break;
109		default:
110			fprintf(stderr, _("invalid or unknown argument\n"));
111			return EXIT_FAILURE;
112		}
113	} while (cont);
114
115	powercap_show();
116	return 0;
117}