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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | /* * (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc. * * Licensed under the terms of the GNU GPL License version 2. */ #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <string.h> #include <getopt.h> #include <cpufreq.h> #include "helpers/helpers.h" #include "helpers/sysfs.h" static struct option set_opts[] = { { .name = "perf-bias", .has_arg = optional_argument, .flag = NULL, .val = 'b'}, { .name = "sched-mc", .has_arg = optional_argument, .flag = NULL, .val = 'm'}, { .name = "sched-smt", .has_arg = optional_argument, .flag = NULL, .val = 's'}, { }, }; static void print_wrong_arg_exit(void) { printf(_("invalid or unknown argument\n")); exit(EXIT_FAILURE); } int cmd_info(int argc, char **argv) { extern char *optarg; extern int optind, opterr, optopt; unsigned int cpu; union { struct { int sched_mc:1; int sched_smt:1; int perf_bias:1; }; int params; } params = {}; int ret = 0; setlocale(LC_ALL, ""); textdomain(PACKAGE); /* parameter parsing */ while ((ret = getopt_long(argc, argv, "msb", set_opts, NULL)) != -1) { switch (ret) { case 'b': if (params.perf_bias) print_wrong_arg_exit(); params.perf_bias = 1; break; case 'm': if (params.sched_mc) print_wrong_arg_exit(); params.sched_mc = 1; break; case 's': if (params.sched_smt) print_wrong_arg_exit(); params.sched_smt = 1; break; default: print_wrong_arg_exit(); } }; if (!params.params) params.params = 0x7; /* Default is: show output of CPU 0 only */ if (bitmask_isallclear(cpus_chosen)) bitmask_setbit(cpus_chosen, 0); if (params.sched_mc) { ret = sysfs_get_sched("mc"); printf(_("System's multi core scheduler setting: ")); if (ret < 0) /* if sysfs file is missing it's: errno == ENOENT */ printf(_("not supported\n")); else printf("%d\n", ret); } if (params.sched_smt) { ret = sysfs_get_sched("smt"); printf(_("System's thread sibling scheduler setting: ")); if (ret < 0) /* if sysfs file is missing it's: errno == ENOENT */ printf(_("not supported\n")); else printf("%d\n", ret); } /* Add more per cpu options here */ if (!params.perf_bias) return ret; if (params.perf_bias) { if (!run_as_root) { params.perf_bias = 0; printf(_("Intel's performance bias setting needs root privileges\n")); } else if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) { printf(_("System does not support Intel's performance" " bias setting\n")); params.perf_bias = 0; } } /* loop over CPUs */ for (cpu = bitmask_first(cpus_chosen); cpu <= bitmask_last(cpus_chosen); cpu++) { if (!bitmask_isbitset(cpus_chosen, cpu) || cpufreq_cpu_exists(cpu)) continue; printf(_("analyzing CPU %d:\n"), cpu); if (params.perf_bias) { ret = msr_intel_get_perf_bias(cpu); if (ret < 0) { printf(_("Could not read perf-bias value\n")); break; } else printf(_("perf-bias: %d\n"), ret); } } return ret; } |