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- Add disable C-state capability and support for latest Haswell CPUs

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OBS-URL: https://build.opensuse.org/package/show/hardware/cpupower?expand=0&rev=26
This commit is contained in:
Thomas Renninger 2013-07-01 09:14:16 +00:00 committed by Git OBS Bridge
parent 8c3f6923ab
commit a9cd442efc
7 changed files with 767 additions and 6 deletions
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15
cpupower-haswell_support.patch
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@ -1,14 +1,19 @@
Index: cpupower-3.8/utils/idle_monitor/snb_idle.c
===================================================================
--- cpupower-3.8.orig/utils/idle_monitor/snb_idle.c
+++ cpupower-3.8/utils/idle_monitor/snb_idle.c
@@ -155,6 +155,9 @@ static struct cpuidle_monitor *snb_regis
cpupower: Haswell also supports the C-states introduced with SandyBridge
Signed-off-by: Thomas Renninger <trenn@suse.de>
diff --git a/utils/idle_monitor/snb_idle.c b/utils/idle_monitor/snb_idle.c
index a99b43b..efc8a69 100644
--- a/utils/idle_monitor/snb_idle.c
+++ b/utils/idle_monitor/snb_idle.c
@@ -155,6 +155,10 @@ static struct cpuidle_monitor *snb_register(void)
case 0x2D: /* SNB Xeon */
case 0x3A: /* IVB */
case 0x3E: /* IVB Xeon */
+ case 0x3C: /* HSW */
+ case 0x3F: /* HSW */
+ case 0x45: /* HSW */
+ case 0x46: /* HSW */
break;
default:
return NULL;

5
cpupower.changes
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@ -1,3 +1,8 @@
-------------------------------------------------------------------
Mon Jul 1 08:55:52 UTC 2013 - trenn@suse.de
- Add disable C-state capability and support for latest Haswell CPUs
-------------------------------------------------------------------
Fri May 31 15:57:02 UTC 2013 - varkoly@suse.com

11
cpupower.spec
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@ -17,6 +17,7 @@
#
Name: cpupower
Url: http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufrequtils.html
# Use this as version when things are in mainline kernel
@ -28,7 +29,11 @@ License: GPL-2.0
Group: System/Base
Source: %{name}-%{version}.tar.bz2
Source1: cpupower_export_tarball_from_git.sh
Patch1: cpupower-haswell_support.patch
Patch1: cpupower_make_get_idlestate_count_unsigned.patch
Patch2: cpupower_disable_cstates.patch
Patch3: introduce_cpupower_idle_set.patch
Patch4: cpupower-haswell_support.patch
Patch5: cpupower_hsw_special.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-build
BuildRequires: gettext-tools
BuildRequires: pciutils
@ -74,6 +79,10 @@ powersave module.
%prep
%setup -q
%patch1 -p1
%patch2 -p1
%patch3 -p1
%patch4 -p1
%patch5 -p1
%build
# This package failed when testing with -Wl,-as-needed being default.

188
cpupower_disable_cstates.patch Normal file
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@ -0,0 +1,188 @@
cpupower: Implement disabling of cstate interface
Latest kernel allows to disable C-states via:
/sys/devices/system/cpu/cpuX/cpuidle/stateY/disable
This patch provides lower level sysfs access functions to make use of this
interface.
A later patch will implement the higher level stuff.
Signed-off-by: Thomas Renninger <trenn@suse.de>
diff --git a/utils/helpers/sysfs.c b/utils/helpers/sysfs.c
index 891f671..5cdc600 100644
--- a/utils/helpers/sysfs.c
+++ b/utils/helpers/sysfs.c
@@ -89,6 +89,33 @@ int sysfs_is_cpu_online(unsigned int cpu)
/* CPUidle idlestate specific /sys/devices/system/cpu/cpuX/cpuidle/ access */
+
+/* CPUidle idlestate specific /sys/devices/system/cpu/cpuX/cpuidle/ access */
+
+/*
+ * helper function to check whether a file under "../cpuX/cpuidle/stateX/" dir
+ * exists.
+ * For example the functionality to disable c-states was introduced in later
+ * kernel versions, this function can be used to explicitly check for this
+ * feature.
+ *
+ * returns 1 if the file exists, 0 otherwise.
+ */
+unsigned int sysfs_idlestate_file_exists(unsigned int cpu,
+ unsigned int idlestate,
+ const char *fname)
+{
+ char path[SYSFS_PATH_MAX];
+ struct stat statbuf;
+
+
+ snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpuidle/state%u/%s",
+ cpu, idlestate, fname);
+ if (stat(path, &statbuf) != 0)
+ return 0;
+ return 1;
+}
+
/*
* helper function to read file from /sys into given buffer
* fname is a relative path under "cpuX/cpuidle/stateX/" dir
@@ -121,6 +148,40 @@ unsigned int sysfs_idlestate_read_file(unsigned int cpu, unsigned int idlestate,
return (unsigned int) numread;
}
+/*
+ * helper function to write a new value to a /sys file
+ * fname is a relative path under "../cpuX/cpuidle/cstateY/" dir
+ *
+ * Returns the number of bytes written or 0 on error
+ */
+static
+unsigned int sysfs_idlestate_write_file(unsigned int cpu,
+ unsigned int idlestate,
+ const char *fname,
+ const char *value, size_t len)
+{
+ char path[SYSFS_PATH_MAX];
+ int fd;
+ ssize_t numwrite;
+
+ snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpuidle/state%u/%s",
+ cpu, idlestate, fname);
+
+ fd = open(path, O_WRONLY);
+ if (fd == -1)
+ return 0;
+
+ numwrite = write(fd, value, len);
+ if (numwrite < 1) {
+ close(fd);
+ return 0;
+ }
+
+ close(fd);
+
+ return (unsigned int) numwrite;
+}
+
/* read access to files which contain one numeric value */
enum idlestate_value {
@@ -128,6 +189,7 @@ enum idlestate_value {
IDLESTATE_POWER,
IDLESTATE_LATENCY,
IDLESTATE_TIME,
+ IDLESTATE_DISABLE,
MAX_IDLESTATE_VALUE_FILES
};
@@ -136,6 +198,7 @@ static const char *idlestate_value_files[MAX_IDLESTATE_VALUE_FILES] = {
[IDLESTATE_POWER] = "power",
[IDLESTATE_LATENCY] = "latency",
[IDLESTATE_TIME] = "time",
+ [IDLESTATE_DISABLE] = "disable",
};
static unsigned long long sysfs_idlestate_get_one_value(unsigned int cpu,
@@ -205,8 +268,59 @@ static char *sysfs_idlestate_get_one_string(unsigned int cpu,
return result;
}
+/*
+ * Returns:
+ * 1 if disabled
+ * 0 if enabled
+ * -1 if idlestate is not available
+ * -2 if disabling is not supported by the kernel
+ */
+int sysfs_is_idlestate_disabled(unsigned int cpu,
+ unsigned int idlestate)
+{
+ if (sysfs_get_idlestate_count(cpu) < idlestate)
+ return -1;
+
+ if (!sysfs_idlestate_file_exists(cpu, idlestate,
+ idlestate_value_files[IDLESTATE_DISABLE]))
+ return -2;
+ return sysfs_idlestate_get_one_value(cpu, idlestate, IDLESTATE_DISABLE);
+}
+
+/*
+ * Pass 1 as last argument to disable or 0 to enable the state
+ * Returns:
+ * 0 on success
+ * negative values on error, for example:
+ * -1 if idlestate is not available
+ * -2 if disabling is not supported by the kernel
+ * -3 No write access to disable/enable C-states
+ */
+int sysfs_idlestate_disable(unsigned int cpu,
+ unsigned int idlestate,
+ unsigned int disable)
+{
+ char value[SYSFS_PATH_MAX];
+ int bytes_written;
+
+ if (sysfs_get_idlestate_count(cpu) < idlestate)
+ return -1;
+
+ if (!sysfs_idlestate_file_exists(cpu, idlestate,
+ idlestate_value_files[IDLESTATE_DISABLE]))
+ return -2;
+
+ snprintf(value, SYSFS_PATH_MAX, "%u", disable);
+
+ bytes_written = sysfs_idlestate_write_file(cpu, idlestate, "disable",
+ value, sizeof(disable));
+ if (bytes_written)
+ return 0;
+ return -3;
+}
+
unsigned long sysfs_get_idlestate_latency(unsigned int cpu,
- unsigned int idlestate)
+ unsigned int idlestate)
{
return sysfs_idlestate_get_one_value(cpu, idlestate, IDLESTATE_LATENCY);
}
diff --git a/utils/helpers/sysfs.h b/utils/helpers/sysfs.h
index 0401a97..d28f11f 100644
--- a/utils/helpers/sysfs.h
+++ b/utils/helpers/sysfs.h
@@ -7,8 +7,16 @@
extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);
+extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu,
+ unsigned int idlestate,
+ const char *fname);
+
extern int sysfs_is_cpu_online(unsigned int cpu);
+extern int sysfs_is_idlestate_disabled(unsigned int cpu,
+ unsigned int idlestate);
+extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate,
+ unsigned int disable);
extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu,
unsigned int idlestate);
extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu,

233
cpupower_hsw_special.patch Normal file
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@ -0,0 +1,233 @@
cpupower: Add Haswell family 0x45 specific idle monitor to show PC8,9,10 states
This specific processor supports 3 new package sleep states.
Provide a monitor, so that the user can see their usage.
Signed-off-by: Thomas Renninger <trenn@suse.de>
diff --git a/Makefile b/Makefile
index ce17f30..cbfec92 100644
--- a/Makefile
+++ b/Makefile
@@ -128,6 +128,7 @@ UTIL_OBJS = utils/helpers/amd.o utils/helpers/topology.o utils/helpers/msr.o \
utils/helpers/sysfs.o utils/helpers/misc.o utils/helpers/cpuid.o \
utils/helpers/pci.o utils/helpers/bitmask.o \
utils/idle_monitor/nhm_idle.o utils/idle_monitor/snb_idle.o \
+ utils/idle_monitor/hsw_ext_idle.o \
utils/idle_monitor/amd_fam14h_idle.o utils/idle_monitor/cpuidle_sysfs.o \
utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-monitor.o \
utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \
diff --git a/utils/idle_monitor/hsw_ext_idle.c b/utils/idle_monitor/hsw_ext_idle.c
new file mode 100644
index 0000000..ebeaba6
--- /dev/null
+++ b/utils/idle_monitor/hsw_ext_idle.c
@@ -0,0 +1,196 @@
+/*
+ * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
+ *
+ * Licensed under the terms of the GNU GPL License version 2.
+ *
+ * Based on SandyBridge monitor. Implements the new package C-states
+ * (PC8, PC9, PC10) coming with a specific Haswell (family 0x45) CPU.
+ */
+
+#if defined(__i386__) || defined(__x86_64__)
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "helpers/helpers.h"
+#include "idle_monitor/cpupower-monitor.h"
+
+#define MSR_PKG_C8_RESIDENCY 0x00000630
+#define MSR_PKG_C9_RESIDENCY 0x00000631
+#define MSR_PKG_C10_RESIDENCY 0x00000632
+
+#define MSR_TSC 0x10
+
+enum intel_hsw_ext_id { PC8 = 0, PC9, PC10, HSW_EXT_CSTATE_COUNT,
+ TSC = 0xFFFF };
+
+static int hsw_ext_get_count_percent(unsigned int self_id, double *percent,
+ unsigned int cpu);
+
+static cstate_t hsw_ext_cstates[HSW_EXT_CSTATE_COUNT] = {
+ {
+ .name = "PC8",
+ .desc = N_("Processor Package C8"),
+ .id = PC8,
+ .range = RANGE_PACKAGE,
+ .get_count_percent = hsw_ext_get_count_percent,
+ },
+ {
+ .name = "PC9",
+ .desc = N_("Processor Package C9"),
+ .desc = N_("Processor Package C2"),
+ .id = PC9,
+ .range = RANGE_PACKAGE,
+ .get_count_percent = hsw_ext_get_count_percent,
+ },
+ {
+ .name = "PC10",
+ .desc = N_("Processor Package C10"),
+ .id = PC10,
+ .range = RANGE_PACKAGE,
+ .get_count_percent = hsw_ext_get_count_percent,
+ },
+};
+
+static unsigned long long tsc_at_measure_start;
+static unsigned long long tsc_at_measure_end;
+static unsigned long long *previous_count[HSW_EXT_CSTATE_COUNT];
+static unsigned long long *current_count[HSW_EXT_CSTATE_COUNT];
+/* valid flag for all CPUs. If a MSR read failed it will be zero */
+static int *is_valid;
+
+static int hsw_ext_get_count(enum intel_hsw_ext_id id, unsigned long long *val,
+ unsigned int cpu)
+{
+ int msr;
+
+ switch (id) {
+ case PC8:
+ msr = MSR_PKG_C8_RESIDENCY;
+ break;
+ case PC9:
+ msr = MSR_PKG_C9_RESIDENCY;
+ break;
+ case PC10:
+ msr = MSR_PKG_C10_RESIDENCY;
+ break;
+ case TSC:
+ msr = MSR_TSC;
+ break;
+ default:
+ return -1;
+ };
+ if (read_msr(cpu, msr, val))
+ return -1;
+ return 0;
+}
+
+static int hsw_ext_get_count_percent(unsigned int id, double *percent,
+ unsigned int cpu)
+{
+ *percent = 0.0;
+
+ if (!is_valid[cpu])
+ return -1;
+
+ *percent = (100.0 *
+ (current_count[id][cpu] - previous_count[id][cpu])) /
+ (tsc_at_measure_end - tsc_at_measure_start);
+
+ dprint("%s: previous: %llu - current: %llu - (%u)\n",
+ hsw_ext_cstates[id].name, previous_count[id][cpu],
+ current_count[id][cpu], cpu);
+
+ dprint("%s: tsc_diff: %llu - count_diff: %llu - percent: %2.f (%u)\n",
+ hsw_ext_cstates[id].name,
+ (unsigned long long) tsc_at_measure_end - tsc_at_measure_start,
+ current_count[id][cpu] - previous_count[id][cpu],
+ *percent, cpu);
+
+ return 0;
+}
+
+static int hsw_ext_start(void)
+{
+ int num, cpu;
+ unsigned long long val;
+
+ for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) {
+ for (cpu = 0; cpu < cpu_count; cpu++) {
+ hsw_ext_get_count(num, &val, cpu);
+ previous_count[num][cpu] = val;
+ }
+ }
+ hsw_ext_get_count(TSC, &tsc_at_measure_start, 0);
+ return 0;
+}
+
+static int hsw_ext_stop(void)
+{
+ unsigned long long val;
+ int num, cpu;
+
+ hsw_ext_get_count(TSC, &tsc_at_measure_end, 0);
+
+ for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) {
+ for (cpu = 0; cpu < cpu_count; cpu++) {
+ is_valid[cpu] = !hsw_ext_get_count(num, &val, cpu);
+ current_count[num][cpu] = val;
+ }
+ }
+ return 0;
+}
+
+struct cpuidle_monitor intel_hsw_ext_monitor;
+
+static struct cpuidle_monitor *hsw_ext_register(void)
+{
+ int num;
+
+ if (cpupower_cpu_info.vendor != X86_VENDOR_INTEL
+ || cpupower_cpu_info.family != 6)
+ return NULL;
+
+ switch (cpupower_cpu_info.model) {
+ case 0x45: /* HSW */
+ break;
+ default:
+ return NULL;
+ }
+
+ is_valid = calloc(cpu_count, sizeof(int));
+ for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) {
+ previous_count[num] = calloc(cpu_count,
+ sizeof(unsigned long long));
+ current_count[num] = calloc(cpu_count,
+ sizeof(unsigned long long));
+ }
+ intel_hsw_ext_monitor.name_len = strlen(intel_hsw_ext_monitor.name);
+ return &intel_hsw_ext_monitor;
+}
+
+void hsw_ext_unregister(void)
+{
+ int num;
+ free(is_valid);
+ for (num = 0; num < HSW_EXT_CSTATE_COUNT; num++) {
+ free(previous_count[num]);
+ free(current_count[num]);
+ }
+}
+
+struct cpuidle_monitor intel_hsw_ext_monitor = {
+ .name = "HaswellExtended",
+ .hw_states = hsw_ext_cstates,
+ .hw_states_num = HSW_EXT_CSTATE_COUNT,
+ .start = hsw_ext_start,
+ .stop = hsw_ext_stop,
+ .do_register = hsw_ext_register,
+ .unregister = hsw_ext_unregister,
+ .needs_root = 1,
+ .overflow_s = 922000000 /* 922337203 seconds TSC overflow
+ at 20GHz */
+};
+#endif /* defined(__i386__) || defined(__x86_64__) */
diff --git a/utils/idle_monitor/idle_monitors.def b/utils/idle_monitor/idle_monitors.def
index e3f8d9b..0d6ba4d 100644
--- a/utils/idle_monitor/idle_monitors.def
+++ b/utils/idle_monitor/idle_monitors.def
@@ -2,6 +2,7 @@
DEF(amd_fam14h)
DEF(intel_nhm)
DEF(intel_snb)
+DEF(intel_hsw_ext)
DEF(mperf)
#endif
DEF(cpuidle_sysfs)

79
cpupower_make_get_idlestate_count_unsigned.patch Normal file
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@ -0,0 +1,79 @@
cpupower: Make idlestate usage unsigned
Signed-off-by: Thomas Renninger <trenn@suse.de>
diff --git a/utils/cpuidle-info.c b/utils/cpuidle-info.c
index 8145af5..edd5dba 100644
--- a/utils/cpuidle-info.c
+++ b/utils/cpuidle-info.c
@@ -22,7 +22,7 @@
static void cpuidle_cpu_output(unsigned int cpu, int verbose)
{
- int idlestates, idlestate;
+ unsigned int idlestates, idlestate;
char *tmp;
printf(_ ("Analyzing CPU %d:\n"), cpu);
@@ -31,10 +31,8 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
if (idlestates == 0) {
printf(_("CPU %u: No idle states\n"), cpu);
return;
- } else if (idlestates <= 0) {
- printf(_("CPU %u: Can't read idle state info\n"), cpu);
- return;
}
+
printf(_("Number of idle states: %d\n"), idlestates);
printf(_("Available idle states:"));
for (idlestate = 0; idlestate < idlestates; idlestate++) {
@@ -98,21 +96,13 @@ static void cpuidle_general_output(void)
static void proc_cpuidle_cpu_output(unsigned int cpu)
{
long max_allowed_cstate = 2000000000;
- int cstates, cstate;
+ unsigned int cstate, cstates;
cstates = sysfs_get_idlestate_count(cpu);
if (cstates == 0) {
- /*
- * Go on and print same useless info as you'd see with
- * cat /proc/acpi/processor/../power
- * printf(_("CPU %u: No C-states available\n"), cpu);
- * return;
- */
- } else if (cstates <= 0) {
- printf(_("CPU %u: Can't read C-state info\n"), cpu);
+ printf(_("CPU %u: No C-states info\n"), cpu);
return;
}
- /* printf("Cstates: %d\n", cstates); */
printf(_("active state: C0\n"));
printf(_("max_cstate: C%u\n"), cstates-1);
diff --git a/utils/helpers/sysfs.c b/utils/helpers/sysfs.c
index 38ab916..891f671 100644
--- a/utils/helpers/sysfs.c
+++ b/utils/helpers/sysfs.c
@@ -238,7 +238,7 @@ char *sysfs_get_idlestate_desc(unsigned int cpu, unsigned int idlestate)
* Negativ in error case
* Zero if cpuidle does not export any C-states
*/
-int sysfs_get_idlestate_count(unsigned int cpu)
+unsigned int sysfs_get_idlestate_count(unsigned int cpu)
{
char file[SYSFS_PATH_MAX];
struct stat statbuf;
diff --git a/utils/helpers/sysfs.h b/utils/helpers/sysfs.h
index 8cb797b..0401a97 100644
--- a/utils/helpers/sysfs.h
+++ b/utils/helpers/sysfs.h
@@ -19,7 +19,7 @@ extern char *sysfs_get_idlestate_name(unsigned int cpu,
unsigned int idlestate);
extern char *sysfs_get_idlestate_desc(unsigned int cpu,
unsigned int idlestate);
-extern int sysfs_get_idlestate_count(unsigned int cpu);
+extern unsigned int sysfs_get_idlestate_count(unsigned int cpu);
extern char *sysfs_get_cpuidle_governor(void);
extern char *sysfs_get_cpuidle_driver(void);

242
introduce_cpupower_idle_set.patch Normal file
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@ -0,0 +1,242 @@
cpupower: Introduce cpupower 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>
diff --git a/Makefile b/Makefile
index d875a74..ce17f30 100644
--- a/Makefile
+++ b/Makefile
@@ -131,7 +131,8 @@ UTIL_OBJS = utils/helpers/amd.o utils/helpers/topology.o utils/helpers/msr.o \
utils/idle_monitor/amd_fam14h_idle.o utils/idle_monitor/cpuidle_sysfs.o \
utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-monitor.o \
utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \
- utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o
+ utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o \
+ utils/cpuidle-set.o
UTIL_SRC := $(UTIL_OBJS:.o=.c)
diff --git a/man/cpupower-monitor.1 b/man/cpupower-monitor.1
index e01c35d..914cbb9 100644
--- a/man/cpupower-monitor.1
+++ b/man/cpupower-monitor.1
@@ -110,13 +110,21 @@ May work poorly on Linux-2.6.20 through 2.6.29, as the \fBacpi-cpufreq \fP
kernel frequency driver periodically cleared aperf/mperf registers in those
kernels.
-.SS "Nehalem" "SandyBridge"
+.SS "Nehalem" "SandyBridge" "HaswellExtended"
Intel Core and Package sleep state counters.
Threads (hyperthreaded cores) may not be able to enter deeper core states if
its sibling is utilized.
Deepest package sleep states may in reality show up as machine/platform wide
sleep states and can only be entered if all cores are idle. Look up Intel
manuals (some are provided in the References section) for further details.
+The monitors are named after the CPU family where the sleep state capabilities
+got introduced and may not match exactly the CPU name of the platform.
+For example an IvyBridge processor has sleep state capabilities which got
+introduced in Nehalem and SandyBridge processor families.
+Thus on an IvyBridge processor one will get Nehalem and SandyBridge sleep
+state monitors.
+HaswellExtended extra package sleep state capabilities are available only in a
+specific Haswell (family 0x45) and probably also other future processors.
.SS "Fam_12h" "Fam_14h"
AMD laptop and desktop processor (family 12h and 14h) sleep state counters.
diff --git a/utils/builtin.h b/utils/builtin.h
index c10496f..2284c8e 100644
--- a/utils/builtin.h
+++ b/utils/builtin.h
@@ -5,6 +5,7 @@ extern int cmd_set(int argc, const char **argv);
extern int cmd_info(int argc, const char **argv);
extern int cmd_freq_set(int argc, const char **argv);
extern int cmd_freq_info(int argc, const char **argv);
+extern int cmd_idle_set(int argc, const char **argv);
extern int cmd_idle_info(int argc, const char **argv);
extern int cmd_monitor(int argc, const char **argv);
diff --git a/utils/cpuidle-info.c b/utils/cpuidle-info.c
index edd5dba..75e66de 100644
--- a/utils/cpuidle-info.c
+++ b/utils/cpuidle-info.c
@@ -48,10 +48,14 @@ static void cpuidle_cpu_output(unsigned int cpu, int verbose)
return;
for (idlestate = 0; idlestate < idlestates; idlestate++) {
+ int disabled = sysfs_is_idlestate_disabled(cpu, idlestate);
+ /* Disabled interface not supported on older kernels */
+ if (disabled < 0)
+ disabled = 0;
tmp = sysfs_get_idlestate_name(cpu, idlestate);
if (!tmp)
continue;
- printf("%s:\n", tmp);
+ printf("%s%s:\n", tmp, (disabled) ? " (DISABLED) " : "");
free(tmp);
tmp = sysfs_get_idlestate_desc(cpu, idlestate);
diff --git a/utils/cpuidle-set.c b/utils/cpuidle-set.c
new file mode 100644
index 0000000..c78141c
--- /dev/null
+++ b/utils/cpuidle-set.c
@@ -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'},
+ { },
+};
+
+
+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++) {
+
+ if (!bitmask_isbitset(cpus_chosen, cpu))
+ 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;
+ default:
+ /* Not reachable with proper args checking */
+ printf(_("Invalid or unknown argument\n"));
+ exit(EXIT_FAILURE);
+ break;
+ }
+ }
+ return EXIT_SUCCESS;
+}
diff --git a/utils/cpupower.c b/utils/cpupower.c
index 52bee59..7efc570 100644
--- a/utils/cpupower.c
+++ b/utils/cpupower.c
@@ -17,12 +17,6 @@
#include "helpers/helpers.h"
#include "helpers/bitmask.h"
-struct cmd_struct {
- const char *cmd;
- int (*main)(int, const char **);
- int needs_root;
-};
-
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
static int cmd_help(int argc, const char **argv);
@@ -43,10 +37,17 @@ int be_verbose;
static void print_help(void);
+struct cmd_struct {
+ const char *cmd;
+ int (*main)(int, const char **);
+ int needs_root;
+};
+
static struct cmd_struct commands[] = {
{ "frequency-info", cmd_freq_info, 0 },
{ "frequency-set", cmd_freq_set, 1 },
{ "idle-info", cmd_idle_info, 0 },
+ { "idle-set", cmd_idle_set, 1 },
{ "set", cmd_set, 1 },
{ "info", cmd_info, 0 },
{ "monitor", cmd_monitor, 0 },