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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/power/cpupower/utils/cpupower-set.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/power/cpupower/utils/cpupower-set.c')
-rw-r--r-- | tools/power/cpupower/utils/cpupower-set.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/cpupower-set.c b/tools/power/cpupower/utils/cpupower-set.c new file mode 100644 index 000000000..052044d7e --- /dev/null +++ b/tools/power/cpupower/utils/cpupower-set.c @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * (C) 2011 Thomas Renninger <trenn@suse.de>, Novell Inc. + */ + + +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <getopt.h> +#include <sys/utsname.h> + +#include "helpers/helpers.h" +#include "helpers/sysfs.h" +#include "helpers/bitmask.h" + +static struct option set_opts[] = { + {"perf-bias", required_argument, NULL, 'b'}, + { }, +}; + +static void print_wrong_arg_exit(void) +{ + printf(_("invalid or unknown argument\n")); + exit(EXIT_FAILURE); +} + +int cmd_set(int argc, char **argv) +{ + extern char *optarg; + extern int optind, opterr, optopt; + unsigned int cpu; + struct utsname uts; + + union { + struct { + int perf_bias:1; + }; + int params; + } params; + int perf_bias = 0; + int ret = 0; + + ret = uname(&uts); + if (!ret && (!strcmp(uts.machine, "ppc64le") || + !strcmp(uts.machine, "ppc64"))) { + fprintf(stderr, _("Subcommand not supported on POWER.\n")); + return ret; + } + + setlocale(LC_ALL, ""); + textdomain(PACKAGE); + + params.params = 0; + /* parameter parsing */ + while ((ret = getopt_long(argc, argv, "b:", + set_opts, NULL)) != -1) { + switch (ret) { + case 'b': + if (params.perf_bias) + print_wrong_arg_exit(); + perf_bias = atoi(optarg); + if (perf_bias < 0 || perf_bias > 15) { + printf(_("--perf-bias param out " + "of range [0-%d]\n"), 15); + print_wrong_arg_exit(); + } + params.perf_bias = 1; + break; + default: + print_wrong_arg_exit(); + } + } + + if (!params.params) + print_wrong_arg_exit(); + + /* Default is: set all CPUs */ + if (bitmask_isallclear(cpus_chosen)) + bitmask_setall(cpus_chosen); + + /* loop over CPUs */ + for (cpu = bitmask_first(cpus_chosen); + cpu <= bitmask_last(cpus_chosen); cpu++) { + + if (!bitmask_isbitset(cpus_chosen, cpu)) + continue; + + if (sysfs_is_cpu_online(cpu) != 1){ + fprintf(stderr, _("Cannot set values on CPU %d:"), cpu); + fprintf(stderr, _(" *is offline\n")); + continue; + } + + if (params.perf_bias) { + ret = msr_intel_set_perf_bias(cpu, perf_bias); + if (ret) { + fprintf(stderr, _("Error setting perf-bias " + "value on CPU %d\n"), cpu); + break; + } + } + } + return ret; +} |