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107 lines
2.1 KiB
107 lines
2.1 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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#include "helpers/bitmask.h" |
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static struct option set_opts[] = { |
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{"perf-bias", required_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_set(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 perf_bias = 0; |
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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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params.params = 0; |
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/* parameter parsing */ |
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while ((ret = getopt_long(argc, argv, "b:", |
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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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perf_bias = atoi(optarg); |
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if (perf_bias < 0 || perf_bias > 15) { |
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printf(_("--perf-bias param out " |
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"of range [0-%d]\n"), 15); |
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print_wrong_arg_exit(); |
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} |
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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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print_wrong_arg_exit(); |
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/* Default is: set all CPUs */ |
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if (bitmask_isallclear(cpus_chosen)) |
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bitmask_setall(cpus_chosen); |
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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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if (sysfs_is_cpu_online(cpu) != 1){ |
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fprintf(stderr, _("Cannot set values on CPU %d:"), cpu); |
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fprintf(stderr, _(" *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_set_perf_bias(cpu, perf_bias); |
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if (ret) { |
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fprintf(stderr, _("Error setting perf-bias " |
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"value on CPU %d\n"), cpu); |
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break; |
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} |
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} |
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} |
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return ret; |
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}
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