c4f3610eba
Example: cpupower idle-set -d 3 will disable C-state 3 on all processors (set commands are active on all CPUs by default), same as: cpupower -c all idle-set -d 3 Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <string.h>
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#include <ctype.h>
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#include <getopt.h>
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#include "cpufreq.h"
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#include "helpers/helpers.h"
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#include "helpers/sysfs.h"
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static struct option info_opts[] = {
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{ .name = "disable", .has_arg = required_argument, .flag = NULL, .val = 'd'},
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{ .name = "enable", .has_arg = required_argument, .flag = NULL, .val = 'e'},
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{ },
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};
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int cmd_idle_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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int ret = 0, cont = 1, param = 0, idlestate = 0;
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unsigned int cpu = 0;
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do {
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ret = getopt_long(argc, argv, "d:e:", info_opts, NULL);
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if (ret == -1)
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break;
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switch (ret) {
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case '?':
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param = '?';
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cont = 0;
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break;
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case 'd':
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if (param) {
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param = -1;
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cont = 0;
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break;
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}
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param = ret;
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idlestate = atoi(optarg);
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break;
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case 'e':
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if (param) {
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param = -1;
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cont = 0;
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break;
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}
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param = ret;
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idlestate = atoi(optarg);
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break;
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case -1:
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cont = 0;
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break;
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}
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} while (cont);
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switch (param) {
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case -1:
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printf(_("You can't specify more than one "
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"output-specific argument\n"));
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exit(EXIT_FAILURE);
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case '?':
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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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/* 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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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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switch (param) {
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case 'd':
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ret = sysfs_idlestate_disable(cpu, idlestate, 1);
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if (ret == 0)
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printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu);
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else if (ret == -1)
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printf(_("Idlestate %u not available on CPU %u\n"),
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idlestate, cpu);
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else if (ret == -2)
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printf(_("Idlestate disabling not supported by kernel\n"));
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else
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printf(_("Idlestate %u not disabled on CPU %u\n"),
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idlestate, cpu);
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break;
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case 'e':
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ret = sysfs_idlestate_disable(cpu, idlestate, 0);
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if (ret == 0)
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printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu);
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else if (ret == -1)
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printf(_("Idlestate %u not available on CPU %u\n"),
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idlestate, cpu);
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else if (ret == -2)
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printf(_("Idlestate enabling not supported by kernel\n"));
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else
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printf(_("Idlestate %u not enabled on CPU %u\n"),
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idlestate, cpu);
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break;
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default:
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/* Not reachable with proper args checking */
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printf(_("Invalid or unknown argument\n"));
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exit(EXIT_FAILURE);
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break;
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}
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}
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return EXIT_SUCCESS;
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}
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