summaryrefslogtreecommitdiffstats
path: root/tools/power/cpupower/utils/cpuidle-set.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /tools/power/cpupower/utils/cpuidle-set.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/power/cpupower/utils/cpuidle-set.c')
-rw-r--r--tools/power/cpupower/utils/cpuidle-set.c185
1 files changed, 185 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..569f268f4
--- /dev/null
+++ b/tools/power/cpupower/utils/cpuidle-set.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0
+#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 <cpuidle.h>
+
+#include "helpers/helpers.h"
+
+static struct option info_opts[] = {
+ {"disable", required_argument, NULL, 'd'},
+ {"enable", required_argument, NULL, 'e'},
+ {"disable-by-latency", required_argument, NULL, 'D'},
+ {"enable-all", no_argument, NULL, '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 (cpupower_is_cpu_online(cpu) != 1)
+ continue;
+
+ idlestates = cpuidle_state_count(cpu);
+ if (idlestates <= 0)
+ continue;
+
+ switch (param) {
+ case 'd':
+ ret = cpuidle_state_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 = cpuidle_state_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 = cpuidle_is_state_disabled
+ (cpu, idlestate);
+ state_latency = cpuidle_state_latency
+ (cpu, idlestate);
+ if (disabled == 1) {
+ if (latency > state_latency){
+ ret = cpuidle_state_disable
+ (cpu, idlestate, 0);
+ if (ret == 0)
+ printf(_("Idlestate %u enabled on CPU %u\n"), idlestate, cpu);
+ }
+ continue;
+ }
+ if (latency <= state_latency){
+ ret = cpuidle_state_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 = cpuidle_is_state_disabled
+ (cpu, idlestate);
+ if (disabled == 1) {
+ ret = cpuidle_state_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;
+}