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>hifive-unleashed-5.1
Thomas Renninger
Rafael J. Wysocki
parent
0924c369bc
commit
c4f3610eba
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@ -131,7 +131,8 @@ UTIL_OBJS = utils/helpers/amd.o utils/helpers/topology.o utils/helpers/msr.o \
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utils/idle_monitor/amd_fam14h_idle.o utils/idle_monitor/cpuidle_sysfs.o \
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utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-monitor.o \
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utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \
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utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o
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utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o \
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utils/cpuidle-set.o
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UTIL_SRC := $(UTIL_OBJS:.o=.c)
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@ -110,13 +110,21 @@ May work poorly on Linux-2.6.20 through 2.6.29, as the \fBacpi-cpufreq \fP
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kernel frequency driver periodically cleared aperf/mperf registers in those
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kernels.
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.SS "Nehalem" "SandyBridge"
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.SS "Nehalem" "SandyBridge" "HaswellExtended"
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Intel Core and Package sleep state counters.
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Threads (hyperthreaded cores) may not be able to enter deeper core states if
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its sibling is utilized.
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Deepest package sleep states may in reality show up as machine/platform wide
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sleep states and can only be entered if all cores are idle. Look up Intel
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manuals (some are provided in the References section) for further details.
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The monitors are named after the CPU family where the sleep state capabilities
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got introduced and may not match exactly the CPU name of the platform.
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For example an IvyBridge processor has sleep state capabilities which got
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introduced in Nehalem and SandyBridge processor families.
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Thus on an IvyBridge processor one will get Nehalem and SandyBridge sleep
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state monitors.
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HaswellExtended extra package sleep state capabilities are available only in a
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specific Haswell (family 0x45) and probably also other future processors.
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.SS "Fam_12h" "Fam_14h"
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AMD laptop and desktop processor (family 12h and 14h) sleep state counters.
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@ -5,6 +5,7 @@ extern int cmd_set(int argc, const char **argv);
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extern int cmd_info(int argc, const char **argv);
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extern int cmd_freq_set(int argc, const char **argv);
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extern int cmd_freq_info(int argc, const char **argv);
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extern int cmd_idle_set(int argc, const char **argv);
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extern int cmd_idle_info(int argc, const char **argv);
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extern int cmd_monitor(int argc, const char **argv);
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@ -48,10 +48,14 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
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return;
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for (idlestate = 0; idlestate < idlestates; idlestate++) {
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int disabled = sysfs_is_idlestate_disabled(cpu, idlestate);
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/* Disabled interface not supported on older kernels */
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if (disabled < 0)
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disabled = 0;
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tmp = sysfs_get_idlestate_name(cpu, idlestate);
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if (!tmp)
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continue;
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printf("%s:\n", tmp);
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printf("%s%s:\n", tmp, (disabled) ? " (DISABLED) " : "");
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free(tmp);
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tmp = sysfs_get_idlestate_desc(cpu, idlestate);
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@ -0,0 +1,118 @@
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#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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@ -17,12 +17,6 @@
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#include "helpers/helpers.h"
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#include "helpers/bitmask.h"
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struct cmd_struct {
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const char *cmd;
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int (*main)(int, const char **);
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int needs_root;
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};
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
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static int cmd_help(int argc, const char **argv);
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@ -43,10 +37,17 @@ int be_verbose;
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static void print_help(void);
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struct cmd_struct {
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const char *cmd;
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int (*main)(int, const char **);
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int needs_root;
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};
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static struct cmd_struct commands[] = {
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{ "frequency-info", cmd_freq_info, 0 },
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{ "frequency-set", cmd_freq_set, 1 },
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{ "idle-info", cmd_idle_info, 0 },
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{ "idle-set", cmd_idle_set, 1 },
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{ "set", cmd_set, 1 },
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{ "info", cmd_info, 0 },
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{ "monitor", cmd_monitor, 0 },
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