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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /tools/power/cpupower/utils/cpuidle-set.c
Initial import
Diffstat (limited to 'tools/power/cpupower/utils/cpuidle-set.c')
-rw-r--r--tools/power/cpupower/utils/cpuidle-set.c181
1 files changed, 181 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/cpuidle-set.c b/tools/power/cpupower/utils/cpuidle-set.c
new file mode 100644
index 000000000..d45d8d775
--- /dev/null
+++ b/tools/power/cpupower/utils/cpuidle-set.c
@@ -0,0 +1,181 @@
+#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'},
+ { .name = "disable-by-latency",
+ .has_arg = required_argument, .flag = NULL, .val = 'D'},
+ { .name = "enable-all",
+ .has_arg = no_argument, .flag = NULL, .val = 'E'},
+ { },
+};
+
+
+int cmd_idle_set(int argc, char **argv)
+{
+ extern char *optarg;
+ extern int optind, opterr, optopt;
+ int ret = 0, cont = 1, param = 0, disabled;
+ unsigned long long latency = 0, state_latency;
+ unsigned int cpu = 0, idlestate = 0, idlestates = 0;
+ char *endptr;
+
+ do {
+ ret = getopt_long(argc, argv, "d:e:ED:", 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 'D':
+ if (param) {
+ param = -1;
+ cont = 0;
+ break;
+ }
+ param = ret;
+ latency = strtoull(optarg, &endptr, 10);
+ if (*endptr != '\0') {
+ printf(_("Bad latency value: %s\n"), optarg);
+ exit(EXIT_FAILURE);
+ }
+ break;
+ case 'E':
+ if (param) {
+ param = -1;
+ cont = 0;
+ break;
+ }
+ param = ret;
+ 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++) {
+
+ if (!bitmask_isbitset(cpus_chosen, cpu))
+ continue;
+
+ if (sysfs_is_cpu_online(cpu) != 1)
+ continue;
+
+ idlestates = sysfs_get_idlestate_count(cpu);
+ if (idlestates <= 0)
+ continue;
+
+ switch (param) {
+ 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;
+ case 'D':
+ for (idlestate = 0; idlestate < idlestates; idlestate++) {
+ disabled = sysfs_is_idlestate_disabled
+ (cpu, idlestate);
+ state_latency = sysfs_get_idlestate_latency
+ (cpu, idlestate);
+ printf("CPU: %u - idlestate %u - state_latency: %llu - latency: %llu\n",
+ cpu, idlestate, state_latency, latency);
+ if (disabled == 1 || latency > state_latency)
+ continue;
+ ret = sysfs_idlestate_disable
+ (cpu, idlestate, 1);
+ if (ret == 0)
+ printf(_("Idlestate %u disabled on CPU %u\n"), idlestate, cpu);
+ }
+ break;
+ case 'E':
+ for (idlestate = 0; idlestate < idlestates; idlestate++) {
+ disabled = sysfs_is_idlestate_disabled
+ (cpu, idlestate);
+ if (disabled == 1) {
+ ret = sysfs_idlestate_disable
+ (cpu, idlestate, 0);
+ if (ret == 0)
+ printf(_("Idlestate %u 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;
+}