2 * (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
4 * Licensed under the terms of the GNU GPL License version 2.
16 #include "helpers/helpers.h"
17 #include "helpers/sysfs.h"
18 #include "helpers/bitmask.h"
20 static struct option set_opts[] = {
21 {"perf-bias", required_argument, NULL, 'b'},
25 static void print_wrong_arg_exit(void)
27 printf(_("invalid or unknown argument\n"));
31 int cmd_set(int argc, char **argv)
34 extern int optind, opterr, optopt;
46 setlocale(LC_ALL, "");
50 /* parameter parsing */
51 while ((ret = getopt_long(argc, argv, "b:",
52 set_opts, NULL)) != -1) {
56 print_wrong_arg_exit();
57 perf_bias = atoi(optarg);
58 if (perf_bias < 0 || perf_bias > 15) {
59 printf(_("--perf-bias param out "
60 "of range [0-%d]\n"), 15);
61 print_wrong_arg_exit();
66 print_wrong_arg_exit();
71 print_wrong_arg_exit();
73 /* Default is: set all CPUs */
74 if (bitmask_isallclear(cpus_chosen))
75 bitmask_setall(cpus_chosen);
78 for (cpu = bitmask_first(cpus_chosen);
79 cpu <= bitmask_last(cpus_chosen); cpu++) {
81 if (!bitmask_isbitset(cpus_chosen, cpu) ||
82 cpufreq_cpu_exists(cpu))
85 if (params.perf_bias) {
86 ret = msr_intel_set_perf_bias(cpu, perf_bias);
88 fprintf(stderr, _("Error setting perf-bias "
89 "value on CPU %d\n"), cpu);