1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <unistd.h>
8*4882a593Smuzhiyun #include <stdio.h>
9*4882a593Smuzhiyun #include <stdlib.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <string.h>
12*4882a593Smuzhiyun #include <getopt.h>
13*4882a593Smuzhiyun #include <sys/utsname.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "helpers/helpers.h"
16*4882a593Smuzhiyun #include "helpers/sysfs.h"
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun static struct option set_opts[] = {
19*4882a593Smuzhiyun {"perf-bias", optional_argument, NULL, 'b'},
20*4882a593Smuzhiyun { },
21*4882a593Smuzhiyun };
22*4882a593Smuzhiyun
print_wrong_arg_exit(void)23*4882a593Smuzhiyun static void print_wrong_arg_exit(void)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun printf(_("invalid or unknown argument\n"));
26*4882a593Smuzhiyun exit(EXIT_FAILURE);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
cmd_info(int argc,char ** argv)29*4882a593Smuzhiyun int cmd_info(int argc, char **argv)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun extern char *optarg;
32*4882a593Smuzhiyun extern int optind, opterr, optopt;
33*4882a593Smuzhiyun unsigned int cpu;
34*4882a593Smuzhiyun struct utsname uts;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun union {
37*4882a593Smuzhiyun struct {
38*4882a593Smuzhiyun int perf_bias:1;
39*4882a593Smuzhiyun };
40*4882a593Smuzhiyun int params;
41*4882a593Smuzhiyun } params = {};
42*4882a593Smuzhiyun int ret = 0;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun ret = uname(&uts);
45*4882a593Smuzhiyun if (!ret && (!strcmp(uts.machine, "ppc64le") ||
46*4882a593Smuzhiyun !strcmp(uts.machine, "ppc64"))) {
47*4882a593Smuzhiyun fprintf(stderr, _("Subcommand not supported on POWER.\n"));
48*4882a593Smuzhiyun return ret;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun setlocale(LC_ALL, "");
52*4882a593Smuzhiyun textdomain(PACKAGE);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /* parameter parsing */
55*4882a593Smuzhiyun while ((ret = getopt_long(argc, argv, "b", set_opts, NULL)) != -1) {
56*4882a593Smuzhiyun switch (ret) {
57*4882a593Smuzhiyun case 'b':
58*4882a593Smuzhiyun if (params.perf_bias)
59*4882a593Smuzhiyun print_wrong_arg_exit();
60*4882a593Smuzhiyun params.perf_bias = 1;
61*4882a593Smuzhiyun break;
62*4882a593Smuzhiyun default:
63*4882a593Smuzhiyun print_wrong_arg_exit();
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun if (!params.params)
68*4882a593Smuzhiyun params.params = 0x7;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun /* Default is: show output of CPU 0 only */
71*4882a593Smuzhiyun if (bitmask_isallclear(cpus_chosen))
72*4882a593Smuzhiyun bitmask_setbit(cpus_chosen, 0);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun /* Add more per cpu options here */
75*4882a593Smuzhiyun if (!params.perf_bias)
76*4882a593Smuzhiyun return ret;
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun if (params.perf_bias) {
79*4882a593Smuzhiyun if (!run_as_root) {
80*4882a593Smuzhiyun params.perf_bias = 0;
81*4882a593Smuzhiyun printf(_("Intel's performance bias setting needs root privileges\n"));
82*4882a593Smuzhiyun } else if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) {
83*4882a593Smuzhiyun printf(_("System does not support Intel's performance"
84*4882a593Smuzhiyun " bias setting\n"));
85*4882a593Smuzhiyun params.perf_bias = 0;
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun /* loop over CPUs */
90*4882a593Smuzhiyun for (cpu = bitmask_first(cpus_chosen);
91*4882a593Smuzhiyun cpu <= bitmask_last(cpus_chosen); cpu++) {
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun if (!bitmask_isbitset(cpus_chosen, cpu))
94*4882a593Smuzhiyun continue;
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun printf(_("analyzing CPU %d:\n"), cpu);
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun if (sysfs_is_cpu_online(cpu) != 1){
99*4882a593Smuzhiyun printf(_(" *is offline\n"));
100*4882a593Smuzhiyun continue;
101*4882a593Smuzhiyun }
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun if (params.perf_bias) {
104*4882a593Smuzhiyun ret = msr_intel_get_perf_bias(cpu);
105*4882a593Smuzhiyun if (ret < 0) {
106*4882a593Smuzhiyun fprintf(stderr,
107*4882a593Smuzhiyun _("Could not read perf-bias value[%d]\n"), ret);
108*4882a593Smuzhiyun exit(EXIT_FAILURE);
109*4882a593Smuzhiyun } else
110*4882a593Smuzhiyun printf(_("perf-bias: %d\n"), ret);
111*4882a593Smuzhiyun }
112*4882a593Smuzhiyun }
113*4882a593Smuzhiyun return 0;
114*4882a593Smuzhiyun }
115