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cpupower: Introduce idle-set subcommand and C-state enabling/disabling
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>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| #include <unistd.h> | ||
| #include <stdio.h> | ||
| #include <errno.h> | ||
| #include <stdlib.h> | ||
| #include <limits.h> | ||
| #include <string.h> | ||
| #include <ctype.h> | ||
|
|
||
| #include <getopt.h> | ||
|
|
||
| #include "cpufreq.h" | ||
| #include "helpers/helpers.h" | ||
| #include "helpers/sysfs.h" | ||
|
|
||
| static struct option info_opts[] = { | ||
| { .name = "disable", .has_arg = required_argument, .flag = NULL, .val = 'd'}, | ||
| { .name = "enable", .has_arg = required_argument, .flag = NULL, .val = 'e'}, | ||
| { }, | ||
| }; | ||
|
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| int cmd_idle_set(int argc, char **argv) | ||
| { | ||
| extern char *optarg; | ||
| extern int optind, opterr, optopt; | ||
| int ret = 0, cont = 1, param = 0, idlestate = 0; | ||
| unsigned int cpu = 0; | ||
|
|
||
| do { | ||
| ret = getopt_long(argc, argv, "d:e:", info_opts, NULL); | ||
| if (ret == -1) | ||
| break; | ||
| switch (ret) { | ||
| case '?': | ||
| param = '?'; | ||
| cont = 0; | ||
| break; | ||
| case 'd': | ||
| if (param) { | ||
| param = -1; | ||
| cont = 0; | ||
| break; | ||
| } | ||
| param = ret; | ||
| idlestate = atoi(optarg); | ||
| break; | ||
| case 'e': | ||
| if (param) { | ||
| param = -1; | ||
| cont = 0; | ||
| break; | ||
| } | ||
| param = ret; | ||
| idlestate = atoi(optarg); | ||
| break; | ||
| case -1: | ||
| cont = 0; | ||
| break; | ||
| } | ||
| } while (cont); | ||
|
|
||
| switch (param) { | ||
| case -1: | ||
| printf(_("You can't specify more than one " | ||
| "output-specific argument\n")); | ||
| exit(EXIT_FAILURE); | ||
| case '?': | ||
| printf(_("invalid or unknown argument\n")); | ||
| exit(EXIT_FAILURE); | ||
| } | ||
|
|
||
| /* Default is: set all CPUs */ | ||
| if (bitmask_isallclear(cpus_chosen)) | ||
| bitmask_setall(cpus_chosen); | ||
|
|
||
| for (cpu = bitmask_first(cpus_chosen); | ||
| cpu <= bitmask_last(cpus_chosen); cpu++) { | ||
|
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||
| if (!bitmask_isbitset(cpus_chosen, cpu)) | ||
| continue; | ||
|
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| switch (param) { | ||
|
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||
| case 'd': | ||
| ret = sysfs_idlestate_disable(cpu, idlestate, 1); | ||
| if (ret == 0) | ||
| printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu); | ||
| else if (ret == -1) | ||
| printf(_("Idlestate %u not available on CPU %u\n"), | ||
| idlestate, cpu); | ||
| else if (ret == -2) | ||
| printf(_("Idlestate disabling not supported by kernel\n")); | ||
| else | ||
| printf(_("Idlestate %u not disabled on CPU %u\n"), | ||
| idlestate, cpu); | ||
| break; | ||
| case 'e': | ||
| ret = sysfs_idlestate_disable(cpu, idlestate, 0); | ||
| if (ret == 0) | ||
| printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu); | ||
| else if (ret == -1) | ||
| printf(_("Idlestate %u not available on CPU %u\n"), | ||
| idlestate, cpu); | ||
| else if (ret == -2) | ||
| printf(_("Idlestate enabling not supported by kernel\n")); | ||
| else | ||
| printf(_("Idlestate %u not enabled on CPU %u\n"), | ||
| idlestate, cpu); | ||
| break; | ||
| default: | ||
| /* Not reachable with proper args checking */ | ||
| printf(_("Invalid or unknown argument\n")); | ||
| exit(EXIT_FAILURE); | ||
| break; | ||
| } | ||
| } | ||
| return EXIT_SUCCESS; | ||
| } |
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