Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <getopt.h>
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#include <sys/utsname.h>
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#include "helpers/helpers.h"
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#include "helpers/sysfs.h"
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static struct option set_opts[] = {
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{"perf-bias", optional_argument, NULL, 'b'},
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{ },
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};
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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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int cmd_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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unsigned int cpu;
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struct utsname uts;
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union {
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struct {
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int perf_bias:1;
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};
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int params;
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} params = {};
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int ret = 0;
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ret = uname(&uts);
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if (!ret && (!strcmp(uts.machine, "ppc64le") ||
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!strcmp(uts.machine, "ppc64"))) {
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fprintf(stderr, _("Subcommand not supported on POWER.\n"));
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return ret;
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}
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setlocale(LC_ALL, "");
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textdomain(PACKAGE);
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/* parameter parsing */
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while ((ret = getopt_long(argc, argv, "b", set_opts, NULL)) != -1) {
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switch (ret) {
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case 'b':
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if (params.perf_bias)
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print_wrong_arg_exit();
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params.perf_bias = 1;
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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 (!params.params)
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params.params = 0x7;
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/* Default is: show output of base_cpu only */
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if (bitmask_isallclear(cpus_chosen))
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bitmask_setbit(cpus_chosen, base_cpu);
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/* Add more per cpu options here */
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if (!params.perf_bias)
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return ret;
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if (params.perf_bias) {
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if (!run_as_root) {
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params.perf_bias = 0;
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printf(_("Intel's performance bias setting needs root privileges\n"));
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} else if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) {
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printf(_("System does not support Intel's performance"
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" bias setting\n"));
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params.perf_bias = 0;
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}
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}
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/* loop over CPUs */
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for (cpu = bitmask_first(cpus_chosen);
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cpu <= bitmask_last(cpus_chosen); cpu++) {
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if (!bitmask_isbitset(cpus_chosen, cpu))
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continue;
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printf(_("analyzing CPU %d:\n"), cpu);
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if (sysfs_is_cpu_online(cpu) != 1){
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printf(_(" *is offline\n"));
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continue;
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}
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if (params.perf_bias) {
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ret = cpupower_intel_get_perf_bias(cpu);
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if (ret < 0) {
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fprintf(stderr,
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_("Could not read perf-bias value[%d]\n"), ret);
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exit(EXIT_FAILURE);
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} else
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printf(_("perf-bias: %d\n"), ret);
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}
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}
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return 0;
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}
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