cpupower: Introduce idle state disable-by-latency and enable-all
Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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706f4c1100
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69cd502dd8
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@ -13,11 +13,17 @@ sleep states. This can be handy for power vs performance tuning.
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.SH "OPTIONS"
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.LP
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.TP
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\fB\-d\fR \fB\-\-disable\fR
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\fB\-d\fR \fB\-\-disable\fR <STATE_NO>
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Disable a specific processor sleep state.
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.TP
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\fB\-e\fR \fB\-\-enable\fR
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\fB\-e\fR \fB\-\-enable\fR <STATE_NO>
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Enable a specific processor sleep state.
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.TP
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\fB\-D\fR \fB\-\-disable-by-latency\fR <LATENCY>
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Disable all idle states with a equal or higher latency than <LATENCY>
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.TP
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\fB\-E\fR \fB\-\-enable-all\fR
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Enable all idle states if not enabled already.
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.SH "REMARKS"
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.LP
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@ -13,8 +13,14 @@
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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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{ .name = "disable",
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.has_arg = required_argument, .flag = NULL, .val = 'd'},
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{ .name = "enable",
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.has_arg = required_argument, .flag = NULL, .val = 'e'},
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{ .name = "disable-by-latency",
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.has_arg = required_argument, .flag = NULL, .val = 'D'},
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{ .name = "enable-all",
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.has_arg = no_argument, .flag = NULL, .val = 'E'},
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{ },
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};
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@ -23,11 +29,13 @@ 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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int ret = 0, cont = 1, param = 0, disabled;
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unsigned long long latency = 0, state_latency;
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unsigned int cpu = 0, idlestate = 0, idlestates = 0;
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char *endptr;
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do {
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ret = getopt_long(argc, argv, "d:e:", info_opts, NULL);
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ret = getopt_long(argc, argv, "d:e:ED:", 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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@ -53,6 +61,27 @@ int cmd_idle_set(int argc, char **argv)
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param = ret;
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idlestate = atoi(optarg);
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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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latency = strtoull(optarg, &endptr, 10);
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if (*endptr != '\0') {
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printf(_("Bad latency value: %s\n"), optarg);
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exit(EXIT_FAILURE);
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}
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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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break;
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case -1:
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cont = 0;
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break;
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@ -79,8 +108,14 @@ int cmd_idle_set(int argc, char **argv)
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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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if (sysfs_is_cpu_online(cpu) != 1)
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continue;
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idlestates = sysfs_get_idlestate_count(cpu);
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if (idlestates <= 0)
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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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@ -107,6 +142,34 @@ int cmd_idle_set(int argc, char **argv)
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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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case 'D':
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for (idlestate = 0; idlestate < idlestates; idlestate++) {
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disabled = sysfs_is_idlestate_disabled
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(cpu, idlestate);
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state_latency = sysfs_get_idlestate_latency
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(cpu, idlestate);
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printf("CPU: %u - idlestate %u - state_latency: %llu - latency: %llu\n",
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cpu, idlestate, state_latency, latency);
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if (disabled == 1 || latency > state_latency)
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continue;
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ret = sysfs_idlestate_disable
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(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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}
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break;
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case 'E':
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for (idlestate = 0; idlestate < idlestates; idlestate++) {
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disabled = sysfs_is_idlestate_disabled
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(cpu, idlestate);
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if (disabled == 1) {
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ret = sysfs_idlestate_disable
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(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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}
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}
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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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