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(dest: pr_prefix, src: "\t");
33
34 printf(format: "%sZone: %s", pr_prefix, zone->name);
35 ret = powercap_zone_get_enabled(zone, &mode);
36 if (ret < 0)
37 return ret;
38 printf(format: " (%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(format: "\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(format: "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: argc, argv: argv, shortopts: "a", longopts: 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}
118

source code of linux/tools/power/cpupower/utils/powercap-info.c