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114 lines
2.3 KiB
114 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* (C) 2011 Thomas Renninger <[email protected]>, 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 CPU 0 only */ |
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if (bitmask_isallclear(cpus_chosen)) |
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bitmask_setbit(cpus_chosen, 0); |
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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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