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Merge branch 'pm-tools'

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Merge power management utilities changes for 5.18-rc1:

 - Add tracer tool for the amd-pstate driver (Jinzhou Su).

 - Fix PC6 displaying in turbostat on some systems (Artem Bityutskiy).

 - Add AMD P-State support to the cpupower utility (Huang Rui).

* pm-tools:
  Documentation: amd-pstate: add tracer tool introduction
  tools/power/x86/amd_pstate_tracer: Add tracer tool for AMD P-state
  tools/power/x86/intel_pstate_tracer: make tracer as a module
  cpufreq: amd-pstate: Add more tracepoint for AMD P-State module
  turbostat: fix PC6 displaying on some systems
  cpupower: Add "perf" option to print AMD P-State information
  cpupower: Add function to print AMD P-State performance capabilities
  cpupower: Move print_speed function into misc helper
  cpupower: Enable boost state support for AMD P-State module
  cpupower: Add AMD P-State sysfs definition and access helper
  cpupower: Introduce ACPI CPPC library
  cpupower: Add the function to get the sysfs value from specific table
  cpupower: Initial AMD P-State capability
  cpupower: Add the function to check AMD P-State enabled
  cpupower: Add AMD P-State capability flag
  tools/power/cpupower/{ToDo => TODO}: Rename the todo file
  tools: cpupower: fix typo in cpupower-idle-set(1) manpage
This commit is contained in:
Rafael J. Wysocki 2022-03-18 18:46:15 +01:00
commit ec3d8b8365
20 changed files with 897 additions and 184 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
Documentation/admin-guide/pm/amd-pstate.rst
View File

@ -369,6 +369,32 @@ governor (for the policies it is attached to), or by the ``CPUFreq`` core (for t
policies with other scaling governors).
Tracer Tool
-------------
``amd_pstate_tracer.py`` can record and parse ``amd-pstate`` trace log, then
generate performance plots. This utility can be used to debug and tune the
performance of ``amd-pstate`` driver. The tracer tool needs to import intel
pstate tracer.
Tracer tool located in ``linux/tools/power/x86/amd_pstate_tracer``. It can be
used in two ways. If trace file is available, then directly parse the file
with command ::
./amd_pstate_trace.py [-c cpus] -t <trace_file> -n <test_name>
Or generate trace file with root privilege, then parse and plot with command ::
sudo ./amd_pstate_trace.py [-c cpus] -n <test_name> -i <interval> [-m kbytes]
The test result can be found in ``results/test_name``. Following is the example
about part of the output. ::
common_cpu common_secs common_usecs min_perf des_perf max_perf freq mperf apef tsc load duration_ms sample_num elapsed_time common_comm
CPU_005 712 116384 39 49 166 0.7565 9645075 2214891 38431470 25.1 11.646 469 2.496 kworker/5:0-40
CPU_006 712 116408 39 49 166 0.6769 8950227 1839034 37192089 24.06 11.272 470 2.496 kworker/6:0-1264
Reference
===========

1
MAINTAINERS
View File

@ -1002,6 +1002,7 @@ L: linux-pm@vger.kernel.org
S: Supported
F: Documentation/admin-guide/pm/amd-pstate.rst
F: drivers/cpufreq/amd-pstate*
F: tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
AMD PTDMA DRIVER
M: Sanjay R Mehta <sanju.mehta@amd.com>

22
drivers/cpufreq/amd-pstate-trace.h
View File

@ -27,6 +27,10 @@ TRACE_EVENT(amd_pstate_perf,
TP_PROTO(unsigned long min_perf,
unsigned long target_perf,
unsigned long capacity,
u64 freq,
u64 mperf,
u64 aperf,
u64 tsc,
unsigned int cpu_id,
bool changed,
bool fast_switch
@ -35,6 +39,10 @@ TRACE_EVENT(amd_pstate_perf,
TP_ARGS(min_perf,
target_perf,
capacity,
freq,
mperf,
aperf,
tsc,
cpu_id,
changed,
fast_switch
@ -44,6 +52,10 @@ TRACE_EVENT(amd_pstate_perf,
__field(unsigned long, min_perf)
__field(unsigned long, target_perf)
__field(unsigned long, capacity)
__field(unsigned long long, freq)
__field(unsigned long long, mperf)
__field(unsigned long long, aperf)
__field(unsigned long long, tsc)
__field(unsigned int, cpu_id)
__field(bool, changed)
__field(bool, fast_switch)
@ -53,15 +65,23 @@ TRACE_EVENT(amd_pstate_perf,
__entry->min_perf = min_perf;
__entry->target_perf = target_perf;
__entry->capacity = capacity;
__entry->freq = freq;
__entry->mperf = mperf;
__entry->aperf = aperf;
__entry->tsc = tsc;
__entry->cpu_id = cpu_id;
__entry->changed = changed;
__entry->fast_switch = fast_switch;
),
TP_printk("amd_min_perf=%lu amd_des_perf=%lu amd_max_perf=%lu cpu_id=%u changed=%s fast_switch=%s",
TP_printk("amd_min_perf=%lu amd_des_perf=%lu amd_max_perf=%lu freq=%llu mperf=%llu aperf=%llu tsc=%llu cpu_id=%u changed=%s fast_switch=%s",
(unsigned long)__entry->min_perf,
(unsigned long)__entry->target_perf,
(unsigned long)__entry->capacity,
(unsigned long long)__entry->freq,
(unsigned long long)__entry->mperf,
(unsigned long long)__entry->aperf,
(unsigned long long)__entry->tsc,
(unsigned int)__entry->cpu_id,
(__entry->changed) ? "true" : "false",
(__entry->fast_switch) ? "true" : "false"

59
drivers/cpufreq/amd-pstate.c
View File

@ -65,6 +65,18 @@ MODULE_PARM_DESC(shared_mem,
static struct cpufreq_driver amd_pstate_driver;
/**
* struct amd_aperf_mperf
* @aperf: actual performance frequency clock count
* @mperf: maximum performance frequency clock count
* @tsc: time stamp counter
*/
struct amd_aperf_mperf {
u64 aperf;
u64 mperf;
u64 tsc;
};
/**
* struct amd_cpudata - private CPU data for AMD P-State
* @cpu: CPU number
@ -81,6 +93,9 @@ static struct cpufreq_driver amd_pstate_driver;
* @min_freq: the frequency that mapped to lowest_perf
* @nominal_freq: the frequency that mapped to nominal_perf
* @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf
* @cur: Difference of Aperf/Mperf/tsc count between last and current sample
* @prev: Last Aperf/Mperf/tsc count value read from register
* @freq: current cpu frequency value
* @boost_supported: check whether the Processor or SBIOS supports boost mode
*
* The amd_cpudata is key private data for each CPU thread in AMD P-State, and
@ -102,6 +117,10 @@ struct amd_cpudata {
u32 nominal_freq;
u32 lowest_nonlinear_freq;
struct amd_aperf_mperf cur;
struct amd_aperf_mperf prev;
u64 freq;
bool boost_supported;
};
@ -211,6 +230,39 @@ static inline void amd_pstate_update_perf(struct amd_cpudata *cpudata,
max_perf, fast_switch);
}
static inline bool amd_pstate_sample(struct amd_cpudata *cpudata)
{
u64 aperf, mperf, tsc;
unsigned long flags;
local_irq_save(flags);
rdmsrl(MSR_IA32_APERF, aperf);
rdmsrl(MSR_IA32_MPERF, mperf);
tsc = rdtsc();
if (cpudata->prev.mperf == mperf || cpudata->prev.tsc == tsc) {
local_irq_restore(flags);
return false;
}
local_irq_restore(flags);
cpudata->cur.aperf = aperf;
cpudata->cur.mperf = mperf;
cpudata->cur.tsc = tsc;
cpudata->cur.aperf -= cpudata->prev.aperf;
cpudata->cur.mperf -= cpudata->prev.mperf;
cpudata->cur.tsc -= cpudata->prev.tsc;
cpudata->prev.aperf = aperf;
cpudata->prev.mperf = mperf;
cpudata->prev.tsc = tsc;
cpudata->freq = div64_u64((cpudata->cur.aperf * cpu_khz), cpudata->cur.mperf);
return true;
}
static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
u32 des_perf, u32 max_perf, bool fast_switch)
{
@ -226,8 +278,11 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf,
value &= ~AMD_CPPC_MAX_PERF(~0L);
value |= AMD_CPPC_MAX_PERF(max_perf);
trace_amd_pstate_perf(min_perf, des_perf, max_perf,
cpudata->cpu, (value != prev), fast_switch);
if (trace_amd_pstate_perf_enabled() && amd_pstate_sample(cpudata)) {
trace_amd_pstate_perf(min_perf, des_perf, max_perf, cpudata->freq,
cpudata->cur.mperf, cpudata->cur.aperf, cpudata->cur.tsc,
cpudata->cpu, (value != prev), fast_switch);
}
if (value == prev)
return;

6
tools/power/cpupower/Makefile
View File

@ -143,9 +143,9 @@ UTIL_HEADERS = utils/helpers/helpers.h utils/idle_monitor/cpupower-monitor.h \
utils/helpers/bitmask.h \
utils/idle_monitor/idle_monitors.h utils/idle_monitor/idle_monitors.def
LIB_HEADERS = lib/cpufreq.h lib/cpupower.h lib/cpuidle.h
LIB_SRC = lib/cpufreq.c lib/cpupower.c lib/cpuidle.c
LIB_OBJS = lib/cpufreq.o lib/cpupower.o lib/cpuidle.o
LIB_HEADERS = lib/cpufreq.h lib/cpupower.h lib/cpuidle.h lib/acpi_cppc.h
LIB_SRC = lib/cpufreq.c lib/cpupower.c lib/cpuidle.c lib/acpi_cppc.c
LIB_OBJS = lib/cpufreq.o lib/cpupower.o lib/cpuidle.o lib/acpi_cppc.o
LIB_OBJS := $(addprefix $(OUTPUT),$(LIB_OBJS))
override CFLAGS += -pipe

0
tools/power/cpupower/ToDo → tools/power/cpupower/TODO
View File

59
tools/power/cpupower/lib/acpi_cppc.c Normal file
View File

@ -0,0 +1,59 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "cpupower_intern.h"
#include "acpi_cppc.h"
/* ACPI CPPC sysfs access ***********************************************/
static int acpi_cppc_read_file(unsigned int cpu, const char *fname,
char *buf, size_t buflen)
{
char path[SYSFS_PATH_MAX];
snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/acpi_cppc/%s",
cpu, fname);
return cpupower_read_sysfs(path, buf, buflen);
}
static const char * const acpi_cppc_value_files[] = {
[HIGHEST_PERF] = "highest_perf",
[LOWEST_PERF] = "lowest_perf",
[NOMINAL_PERF] = "nominal_perf",
[LOWEST_NONLINEAR_PERF] = "lowest_nonlinear_perf",
[LOWEST_FREQ] = "lowest_freq",
[NOMINAL_FREQ] = "nominal_freq",
[REFERENCE_PERF] = "reference_perf",
[WRAPAROUND_TIME] = "wraparound_time"
};
unsigned long acpi_cppc_get_data(unsigned int cpu, enum acpi_cppc_value which)
{
unsigned long long value;
unsigned int len;
char linebuf[MAX_LINE_LEN];
char *endp;
if (which >= MAX_CPPC_VALUE_FILES)
return 0;
len = acpi_cppc_read_file(cpu, acpi_cppc_value_files[which],
linebuf, sizeof(linebuf));
if (len == 0)
return 0;
value = strtoull(linebuf, &endp, 0);
if (endp == linebuf || errno == ERANGE)
return 0;
return value;
}

21
tools/power/cpupower/lib/acpi_cppc.h Normal file
View File

@ -0,0 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ACPI_CPPC_H__
#define __ACPI_CPPC_H__
enum acpi_cppc_value {
HIGHEST_PERF,
LOWEST_PERF,
NOMINAL_PERF,
LOWEST_NONLINEAR_PERF,
LOWEST_FREQ,
NOMINAL_FREQ,
REFERENCE_PERF,
WRAPAROUND_TIME,
MAX_CPPC_VALUE_FILES
};
unsigned long acpi_cppc_get_data(unsigned int cpu,
enum acpi_cppc_value which);
#endif /* _ACPI_CPPC_H */

23
tools/power/cpupower/lib/cpufreq.c
View File

@ -83,20 +83,21 @@ static const char *cpufreq_value_files[MAX_CPUFREQ_VALUE_READ_FILES] = {
[STATS_NUM_TRANSITIONS] = "stats/total_trans"
};
static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu,
enum cpufreq_value which)
unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu,
const char **table,
unsigned int index,
unsigned int size)
{
unsigned long value;
unsigned int len;
char linebuf[MAX_LINE_LEN];
char *endp;
if (which >= MAX_CPUFREQ_VALUE_READ_FILES)
if (!table || index >= size || !table[index])
return 0;
len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which],
linebuf, sizeof(linebuf));
len = sysfs_cpufreq_read_file(cpu, table[index], linebuf,
sizeof(linebuf));
if (len == 0)
return 0;
@ -109,6 +110,14 @@ static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu,
return value;
}
static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu,
enum cpufreq_value which)
{
return cpufreq_get_sysfs_value_from_table(cpu, cpufreq_value_files,
which,
MAX_CPUFREQ_VALUE_READ_FILES);
}
/* read access to files which contain one string */
enum cpufreq_string {
@ -124,7 +133,7 @@ static const char *cpufreq_string_files[MAX_CPUFREQ_STRING_FILES] = {
static char *sysfs_cpufreq_get_one_string(unsigned int cpu,
enum cpufreq_string which)
enum cpufreq_string which)
{
char linebuf[MAX_LINE_LEN];
char *result;

12
tools/power/cpupower/lib/cpufreq.h
View File

@ -203,6 +203,18 @@ int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
int cpufreq_set_frequency(unsigned int cpu,
unsigned long target_frequency);
/*
* get the sysfs value from specific table
*
* Read the value with the sysfs file name from specific table. Does
* only work if the cpufreq driver has the specific sysfs interfaces.
*/
unsigned long cpufreq_get_sysfs_value_from_table(unsigned int cpu,
const char **table,
unsigned int index,
unsigned int size);
#ifdef __cplusplus
}
#endif

3
tools/power/cpupower/man/cpupower-frequency-info.1
View File

@ -53,6 +53,9 @@ human\-readable output for the \-f, \-w, \-s and \-y parameters.
\fB\-n\fR \fB\-\-no-rounding\fR
Output frequencies and latencies without rounding off values.
.TP
\fB\-c\fR \fB\-\-perf\fR
Get performances and frequencies capabilities of CPPC, by reading it from hardware (only available on the hardware with CPPC).
.TP
.SH "REMARKS"
.LP
By default only values of core zero are displayed. How to display settings of

2
tools/power/cpupower/man/cpupower-idle-set.1
View File

@ -4,7 +4,7 @@
cpupower\-idle\-set \- Utility to set cpu idle state specific kernel options
.SH "SYNTAX"
.LP
cpupower [ \-c cpulist ] idle\-info [\fIoptions\fP]
cpupower [ \-c cpulist ] idle\-set [\fIoptions\fP]
.SH "DESCRIPTION"
.LP
The cpupower idle\-set subcommand allows to set cpu idle, also called cpu

87
tools/power/cpupower/utils/cpufreq-info.c
View File

@ -84,43 +84,6 @@ static void proc_cpufreq_output(void)
}
static int no_rounding;
static void print_speed(unsigned long speed)
{
unsigned long tmp;
if (no_rounding) {
if (speed > 1000000)
printf("%u.%06u GHz", ((unsigned int) speed/1000000),
((unsigned int) speed%1000000));
else if (speed > 1000)
printf("%u.%03u MHz", ((unsigned int) speed/1000),
(unsigned int) (speed%1000));
else
printf("%lu kHz", speed);
} else {
if (speed > 1000000) {
tmp = speed%10000;
if (tmp >= 5000)
speed += 10000;
printf("%u.%02u GHz", ((unsigned int) speed/1000000),
((unsigned int) (speed%1000000)/10000));
} else if (speed > 100000) {
tmp = speed%1000;
if (tmp >= 500)
speed += 1000;
printf("%u MHz", ((unsigned int) speed/1000));
} else if (speed > 1000) {
tmp = speed%100;
if (tmp >= 50)
speed += 100;
printf("%u.%01u MHz", ((unsigned int) speed/1000),
((unsigned int) (speed%1000)/100));
}
}
return;
}
static void print_duration(unsigned long duration)
{
unsigned long tmp;
@ -183,9 +146,12 @@ static int get_boost_mode_x86(unsigned int cpu)
printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
if ((cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) ||
cpupower_cpu_info.vendor == X86_VENDOR_HYGON) {
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATE) {
return 0;
} else if ((cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) ||
cpupower_cpu_info.vendor == X86_VENDOR_HYGON) {
ret = decode_pstates(cpu, b_states, pstates, &pstate_no);
if (ret)
return ret;
@ -254,11 +220,11 @@ static int get_boost_mode(unsigned int cpu)
if (freqs) {
printf(_(" boost frequency steps: "));
while (freqs->next) {
print_speed(freqs->frequency);
print_speed(freqs->frequency, no_rounding);
printf(", ");
freqs = freqs->next;
}
print_speed(freqs->frequency);
print_speed(freqs->frequency, no_rounding);
printf("\n");
cpufreq_put_available_frequencies(freqs);
}
@ -277,7 +243,7 @@ static int get_freq_kernel(unsigned int cpu, unsigned int human)
return -EINVAL;
}
if (human) {
print_speed(freq);
print_speed(freq, no_rounding);
} else
printf("%lu", freq);
printf(_(" (asserted by call to kernel)\n"));
@ -296,7 +262,7 @@ static int get_freq_hardware(unsigned int cpu, unsigned int human)
return -EINVAL;
}
if (human) {
print_speed(freq);
print_speed(freq, no_rounding);
} else
printf("%lu", freq);
printf(_(" (asserted by call to hardware)\n"));
@ -316,9 +282,9 @@ static int get_hardware_limits(unsigned int cpu, unsigned int human)
if (human) {
printf(_(" hardware limits: "));
print_speed(min);
print_speed(min, no_rounding);
printf(" - ");
print_speed(max);
print_speed(max, no_rounding);
printf("\n");
} else {
printf("%lu %lu\n", min, max);
@ -350,9 +316,9 @@ static int get_policy(unsigned int cpu)
return -EINVAL;
}
printf(_(" current policy: frequency should be within "));
print_speed(policy->min);
print_speed(policy->min, no_rounding);
printf(_(" and "));
print_speed(policy->max);
print_speed(policy->max, no_rounding);
printf(".\n ");
printf(_("The governor \"%s\" may decide which speed to use\n"
@ -436,7 +402,7 @@ static int get_freq_stats(unsigned int cpu, unsigned int human)
struct cpufreq_stats *stats = cpufreq_get_stats(cpu, &total_time);
while (stats) {
if (human) {
print_speed(stats->frequency);
print_speed(stats->frequency, no_rounding);
printf(":%.2f%%",
(100.0 * stats->time_in_state) / total_time);
} else
@ -472,6 +438,17 @@ static int get_latency(unsigned int cpu, unsigned int human)
return 0;
}
/* --performance / -c */
static int get_perf_cap(unsigned int cpu)
{
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATE)
amd_pstate_show_perf_and_freq(cpu, no_rounding);
return 0;
}
static void debug_output_one(unsigned int cpu)
{
struct cpufreq_available_frequencies *freqs;
@ -486,11 +463,11 @@ static void debug_output_one(unsigned int cpu)
if (freqs) {
printf(_(" available frequency steps: "));
while (freqs->next) {
print_speed(freqs->frequency);
print_speed(freqs->frequency, no_rounding);
printf(", ");
freqs = freqs->next;
}
print_speed(freqs->frequency);
print_speed(freqs->frequency, no_rounding);
printf("\n");
cpufreq_put_available_frequencies(freqs);
}
@ -500,6 +477,7 @@ static void debug_output_one(unsigned int cpu)
if (get_freq_hardware(cpu, 1) < 0)
get_freq_kernel(cpu, 1);
get_boost_mode(cpu);
get_perf_cap(cpu);
}
static struct option info_opts[] = {
@ -518,6 +496,7 @@ static struct option info_opts[] = {
{"proc", no_argument, NULL, 'o'},
{"human", no_argument, NULL, 'm'},
{"no-rounding", no_argument, NULL, 'n'},
{"performance", no_argument, NULL, 'c'},
{ },
};
@ -531,7 +510,7 @@ int cmd_freq_info(int argc, char **argv)
int output_param = 0;
do {
ret = getopt_long(argc, argv, "oefwldpgrasmybn", info_opts,
ret = getopt_long(argc, argv, "oefwldpgrasmybnc", info_opts,
NULL);
switch (ret) {
case '?':
@ -554,6 +533,7 @@ int cmd_freq_info(int argc, char **argv)
case 'e':
case 's':
case 'y':
case 'c':
if (output_param) {
output_param = -1;
cont = 0;
@ -660,6 +640,9 @@ int cmd_freq_info(int argc, char **argv)
case 'y':
ret = get_latency(cpu, human);
break;
case 'c':
ret = get_perf_cap(cpu);
break;
}
if (ret)
return ret;

77
tools/power/cpupower/utils/helpers/amd.c
View File

@ -8,7 +8,10 @@
#include <pci/pci.h>
#include "helpers/helpers.h"
#include "cpufreq.h"
#include "acpi_cppc.h"
/* ACPI P-States Helper Functions for AMD Processors ***************/
#define MSR_AMD_PSTATE_STATUS 0xc0010063
#define MSR_AMD_PSTATE 0xc0010064
#define MSR_AMD_PSTATE_LIMIT 0xc0010061
@ -146,4 +149,78 @@ int amd_pci_get_num_boost_states(int *active, int *states)
pci_cleanup(pci_acc);
return 0;
}
/* ACPI P-States Helper Functions for AMD Processors ***************/
/* AMD P-State Helper Functions ************************************/
enum amd_pstate_value {
AMD_PSTATE_HIGHEST_PERF,
AMD_PSTATE_MAX_FREQ,
AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
MAX_AMD_PSTATE_VALUE_READ_FILES,
};
static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
[AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
[AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
[AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
};
static unsigned long amd_pstate_get_data(unsigned int cpu,
enum amd_pstate_value value)
{
return cpufreq_get_sysfs_value_from_table(cpu,
amd_pstate_value_files,
value,
MAX_AMD_PSTATE_VALUE_READ_FILES);
}
void amd_pstate_boost_init(unsigned int cpu, int *support, int *active)
{
unsigned long highest_perf, nominal_perf, cpuinfo_min,
cpuinfo_max, amd_pstate_max;
highest_perf = amd_pstate_get_data(cpu, AMD_PSTATE_HIGHEST_PERF);
nominal_perf = acpi_cppc_get_data(cpu, NOMINAL_PERF);
*support = highest_perf > nominal_perf ? 1 : 0;
if (!(*support))
return;
cpufreq_get_hardware_limits(cpu, &cpuinfo_min, &cpuinfo_max);
amd_pstate_max = amd_pstate_get_data(cpu, AMD_PSTATE_MAX_FREQ);
*active = cpuinfo_max == amd_pstate_max ? 1 : 0;
}
void amd_pstate_show_perf_and_freq(unsigned int cpu, int no_rounding)
{
printf(_(" AMD PSTATE Highest Performance: %lu. Maximum Frequency: "),
amd_pstate_get_data(cpu, AMD_PSTATE_HIGHEST_PERF));
/*
* If boost isn't active, the cpuinfo_max doesn't indicate real max
* frequency. So we read it back from amd-pstate sysfs entry.
*/
print_speed(amd_pstate_get_data(cpu, AMD_PSTATE_MAX_FREQ), no_rounding);
printf(".\n");
printf(_(" AMD PSTATE Nominal Performance: %lu. Nominal Frequency: "),
acpi_cppc_get_data(cpu, NOMINAL_PERF));
print_speed(acpi_cppc_get_data(cpu, NOMINAL_FREQ) * 1000,
no_rounding);
printf(".\n");
printf(_(" AMD PSTATE Lowest Non-linear Performance: %lu. Lowest Non-linear Frequency: "),
acpi_cppc_get_data(cpu, LOWEST_NONLINEAR_PERF));
print_speed(amd_pstate_get_data(cpu, AMD_PSTATE_LOWEST_NONLINEAR_FREQ),
no_rounding);
printf(".\n");
printf(_(" AMD PSTATE Lowest Performance: %lu. Lowest Frequency: "),
acpi_cppc_get_data(cpu, LOWEST_PERF));
print_speed(acpi_cppc_get_data(cpu, LOWEST_FREQ) * 1000, no_rounding);
printf(".\n");
}
/* AMD P-State Helper Functions ************************************/
#endif /* defined(__i386__) || defined(__x86_64__) */

13
tools/power/cpupower/utils/helpers/cpuid.c
View File

@ -149,6 +149,19 @@ out:
if (ext_cpuid_level >= 0x80000008 &&
cpuid_ebx(0x80000008) & (1 << 4))
cpu_info->caps |= CPUPOWER_CAP_AMD_RDPRU;
if (cpupower_amd_pstate_enabled()) {
cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATE;
/*
* If AMD P-State is enabled, the firmware will treat
* AMD P-State function as high priority.
*/
cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB;
cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB_MSR;
cpu_info->caps &= ~CPUPOWER_CAP_AMD_HW_PSTATE;
cpu_info->caps &= ~CPUPOWER_CAP_AMD_PSTATEDEF;
}
}
if (cpu_info->vendor == X86_VENDOR_INTEL) {

22
tools/power/cpupower/utils/helpers/helpers.h
View File

@ -11,6 +11,7 @@
#include <libintl.h>
#include <locale.h>
#include <stdbool.h>
#include "helpers/bitmask.h"
#include <cpupower.h>
@ -73,6 +74,7 @@ enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
#define CPUPOWER_CAP_AMD_HW_PSTATE 0x00000100
#define CPUPOWER_CAP_AMD_PSTATEDEF 0x00000200
#define CPUPOWER_CAP_AMD_CPB_MSR 0x00000400
#define CPUPOWER_CAP_AMD_PSTATE 0x00000800
#define CPUPOWER_AMD_CPBDIS 0x02000000
@ -135,6 +137,16 @@ extern int decode_pstates(unsigned int cpu, int boost_states,
extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
int *active, int * states);
/* AMD P-State stuff **************************/
bool cpupower_amd_pstate_enabled(void);
void amd_pstate_boost_init(unsigned int cpu,
int *support, int *active);
void amd_pstate_show_perf_and_freq(unsigned int cpu,
int no_rounding);
/* AMD P-State stuff **************************/
/*
* CPUID functions returning a single datum
*/
@ -167,6 +179,15 @@ static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
int *active, int * states)
{ return -1; }
static inline bool cpupower_amd_pstate_enabled(void)
{ return false; }
static inline void amd_pstate_boost_init(unsigned int cpu, int *support,
int *active)
{}
static inline void amd_pstate_show_perf_and_freq(unsigned int cpu,
int no_rounding)
{}
/* cpuid and cpuinfo helpers **************************/
static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
@ -184,5 +205,6 @@ extern struct bitmask *offline_cpus;
void get_cpustate(void);
void print_online_cpus(void);
void print_offline_cpus(void);
void print_speed(unsigned long speed, int no_rounding);
#endif /* __CPUPOWERUTILS_HELPERS__ */

60
tools/power/cpupower/utils/helpers/misc.c
View File

@ -3,9 +3,11 @@
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "helpers/helpers.h"
#include "helpers/sysfs.h"
#include "cpufreq.h"
#if defined(__i386__) || defined(__x86_64__)
@ -39,6 +41,8 @@ int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
if (ret)
return ret;
}
} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATE) {
amd_pstate_boost_init(cpu, support, active);
} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA)
*support = *active = 1;
return 0;
@ -83,6 +87,22 @@ int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val)
return 0;
}
bool cpupower_amd_pstate_enabled(void)
{
char *driver = cpufreq_get_driver(0);
bool ret = false;
if (!driver)
return ret;
if (!strcmp(driver, "amd-pstate"))
ret = true;
cpufreq_put_driver(driver);
return ret;
}
#endif /* #if defined(__i386__) || defined(__x86_64__) */
/* get_cpustate
@ -144,3 +164,43 @@ void print_offline_cpus(void)
printf(_("cpupower set operation was not performed on them\n"));
}
}
/*
* print_speed
*
* Print the exact CPU frequency with appropriate unit
*/
void print_speed(unsigned long speed, int no_rounding)
{
unsigned long tmp;
if (no_rounding) {
if (speed > 1000000)
printf("%u.%06u GHz", ((unsigned int)speed / 1000000),
((unsigned int)speed % 1000000));
else if (speed > 1000)
printf("%u.%03u MHz", ((unsigned int)speed / 1000),
(unsigned int)(speed % 1000));
else
printf("%lu kHz", speed);
} else {
if (speed > 1000000) {
tmp = speed % 10000;
if (tmp >= 5000)
speed += 10000;
printf("%u.%02u GHz", ((unsigned int)speed / 1000000),
((unsigned int)(speed % 1000000) / 10000));
} else if (speed > 100000) {
tmp = speed % 1000;
if (tmp >= 500)
speed += 1000;
printf("%u MHz", ((unsigned int)speed / 1000));
} else if (speed > 1000) {
tmp = speed % 100;
if (tmp >= 50)
speed += 100;
printf("%u.%01u MHz", ((unsigned int)speed / 1000),
((unsigned int)(speed % 1000) / 100));
}
}
}

354
tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py Executable file
View File

@ -0,0 +1,354 @@
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-only
# -*- coding: utf-8 -*-
#
""" This utility can be used to debug and tune the performance of the
AMD P-State driver. It imports intel_pstate_tracer to analyze AMD P-State
trace event.
Prerequisites:
Python version 2.7.x or higher
gnuplot 5.0 or higher
gnuplot-py 1.8 or higher
(Most of the distributions have these required packages. They may be called
gnuplot-py, phython-gnuplot or phython3-gnuplot, gnuplot-nox, ... )
Kernel config for Linux trace is enabled
see print_help(): for Usage and Output details
"""
from __future__ import print_function
from datetime import datetime
import subprocess
import os
import time
import re
import signal
import sys
import getopt
import Gnuplot
from numpy import *
from decimal import *
sys.path.append('../intel_pstate_tracer')
#import intel_pstate_tracer
import intel_pstate_tracer as ipt
__license__ = "GPL version 2"
MAX_CPUS = 256
# Define the csv file columns
C_COMM = 15
C_ELAPSED = 14
C_SAMPLE = 13
C_DURATION = 12
C_LOAD = 11
C_TSC = 10
C_APERF = 9
C_MPERF = 8
C_FREQ = 7
C_MAX_PERF = 6
C_DES_PERF = 5
C_MIN_PERF = 4
C_USEC = 3
C_SEC = 2
C_CPU = 1
global sample_num, last_sec_cpu, last_usec_cpu, start_time, test_name, trace_file
getcontext().prec = 11
sample_num =0
last_sec_cpu = [0] * MAX_CPUS
last_usec_cpu = [0] * MAX_CPUS
def plot_per_cpu_freq(cpu_index):
""" Plot per cpu frequency """
file_name = 'cpu{:0>3}.csv'.format(cpu_index)
if os.path.exists(file_name):
output_png = "cpu%03d_frequency.png" % cpu_index
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set yrange [0:7]')
g_plot('set ytics 0, 1')
g_plot('set ylabel "CPU Frequency (GHz)"')
g_plot('set title "{} : frequency : CPU {:0>3} : {:%F %H:%M}"'.format(test_name, cpu_index, datetime.now()))
g_plot('set ylabel "CPU frequency"')
g_plot('set key off')
ipt.set_4_plot_linestyles(g_plot)
g_plot('plot "' + file_name + '" using {:d}:{:d} with linespoints linestyle 1 axis x1y1'.format(C_ELAPSED, C_FREQ))
def plot_per_cpu_des_perf(cpu_index):
""" Plot per cpu desired perf """
file_name = 'cpu{:0>3}.csv'.format(cpu_index)
if os.path.exists(file_name):
output_png = "cpu%03d_des_perf.png" % cpu_index
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set yrange [0:255]')
g_plot('set ylabel "des perf"')
g_plot('set title "{} : cpu des perf : CPU {:0>3} : {:%F %H:%M}"'.format(test_name, cpu_index, datetime.now()))
g_plot('set key off')
ipt.set_4_plot_linestyles(g_plot)
g_plot('plot "' + file_name + '" using {:d}:{:d} with linespoints linestyle 1 axis x1y1'.format(C_ELAPSED, C_DES_PERF))
def plot_per_cpu_load(cpu_index):
""" Plot per cpu load """
file_name = 'cpu{:0>3}.csv'.format(cpu_index)
if os.path.exists(file_name):
output_png = "cpu%03d_load.png" % cpu_index
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set yrange [0:100]')
g_plot('set ytics 0, 10')
g_plot('set ylabel "CPU load (percent)"')
g_plot('set title "{} : cpu load : CPU {:0>3} : {:%F %H:%M}"'.format(test_name, cpu_index, datetime.now()))
g_plot('set key off')
ipt.set_4_plot_linestyles(g_plot)
g_plot('plot "' + file_name + '" using {:d}:{:d} with linespoints linestyle 1 axis x1y1'.format(C_ELAPSED, C_LOAD))
def plot_all_cpu_frequency():
""" Plot all cpu frequencies """
output_png = 'all_cpu_frequencies.png'
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set ylabel "CPU Frequency (GHz)"')
g_plot('set title "{} : cpu frequencies : {:%F %H:%M}"'.format(test_name, datetime.now()))
title_list = subprocess.check_output('ls cpu???.csv | sed -e \'s/.csv//\'',shell=True).decode('utf-8').replace('\n', ' ')
plot_str = "plot for [i in title_list] i.'.csv' using {:d}:{:d} pt 7 ps 1 title i".format(C_ELAPSED, C_FREQ)
g_plot('title_list = "{}"'.format(title_list))
g_plot(plot_str)
def plot_all_cpu_des_perf():
""" Plot all cpu desired perf """
output_png = 'all_cpu_des_perf.png'
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set ylabel "des perf"')
g_plot('set title "{} : cpu des perf : {:%F %H:%M}"'.format(test_name, datetime.now()))
title_list = subprocess.check_output('ls cpu???.csv | sed -e \'s/.csv//\'',shell=True).decode('utf-8').replace('\n', ' ')
plot_str = "plot for [i in title_list] i.'.csv' using {:d}:{:d} pt 255 ps 1 title i".format(C_ELAPSED, C_DES_PERF)
g_plot('title_list = "{}"'.format(title_list))
g_plot(plot_str)
def plot_all_cpu_load():
""" Plot all cpu load """
output_png = 'all_cpu_load.png'
g_plot = ipt.common_gnuplot_settings()
g_plot('set output "' + output_png + '"')
g_plot('set yrange [0:100]')
g_plot('set ylabel "CPU load (percent)"')
g_plot('set title "{} : cpu load : {:%F %H:%M}"'.format(test_name, datetime.now()))
title_list = subprocess.check_output('ls cpu???.csv | sed -e \'s/.csv//\'',shell=True).decode('utf-8').replace('\n', ' ')
plot_str = "plot for [i in title_list] i.'.csv' using {:d}:{:d} pt 255 ps 1 title i".format(C_ELAPSED, C_LOAD)
g_plot('title_list = "{}"'.format(title_list))
g_plot(plot_str)
def store_csv(cpu_int, time_pre_dec, time_post_dec, min_perf, des_perf, max_perf, freq_ghz, mperf, aperf, tsc, common_comm, load, duration_ms, sample_num, elapsed_time, cpu_mask):
""" Store master csv file information """
global graph_data_present
if cpu_mask[cpu_int] == 0:
return
try:
f_handle = open('cpu.csv', 'a')
string_buffer = "CPU_%03u, %05u, %06u, %u, %u, %u, %.4f, %u, %u, %u, %.2f, %.3f, %u, %.3f, %s\n" % (cpu_int, int(time_pre_dec), int(time_post_dec), int(min_perf), int(des_perf), int(max_perf), freq_ghz, int(mperf), int(aperf), int(tsc), load, duration_ms, sample_num, elapsed_time, common_comm)
f_handle.write(string_buffer)
f_handle.close()
except:
print('IO error cpu.csv')
return
graph_data_present = True;
def cleanup_data_files():
""" clean up existing data files """
if os.path.exists('cpu.csv'):
os.remove('cpu.csv')
f_handle = open('cpu.csv', 'a')
f_handle.write('common_cpu, common_secs, common_usecs, min_perf, des_perf, max_perf, freq, mperf, aperf, tsc, load, duration_ms, sample_num, elapsed_time, common_comm')
f_handle.write('\n')
f_handle.close()
def read_trace_data(file_name, cpu_mask):
""" Read and parse trace data """
global current_max_cpu
global sample_num, last_sec_cpu, last_usec_cpu, start_time
try:
data = open(file_name, 'r').read()
except:
print('Error opening ', file_name)
sys.exit(2)
for line in data.splitlines():
search_obj = \
re.search(r'(^(.*?)\[)((\d+)[^\]])(.*?)(\d+)([.])(\d+)(.*?amd_min_perf=)(\d+)(.*?amd_des_perf=)(\d+)(.*?amd_max_perf=)(\d+)(.*?freq=)(\d+)(.*?mperf=)(\d+)(.*?aperf=)(\d+)(.*?tsc=)(\d+)'
, line)
if search_obj:
cpu = search_obj.group(3)
cpu_int = int(cpu)
cpu = str(cpu_int)
time_pre_dec = search_obj.group(6)
time_post_dec = search_obj.group(8)
min_perf = search_obj.group(10)
des_perf = search_obj.group(12)
max_perf = search_obj.group(14)
freq = search_obj.group(16)
mperf = search_obj.group(18)
aperf = search_obj.group(20)
tsc = search_obj.group(22)
common_comm = search_obj.group(2).replace(' ', '')
if sample_num == 0 :
start_time = Decimal(time_pre_dec) + Decimal(time_post_dec) / Decimal(1000000)
sample_num += 1
if last_sec_cpu[cpu_int] == 0 :
last_sec_cpu[cpu_int] = time_pre_dec
last_usec_cpu[cpu_int] = time_post_dec
else :
duration_us = (int(time_pre_dec) - int(last_sec_cpu[cpu_int])) * 1000000 + (int(time_post_dec) - int(last_usec_cpu[cpu_int]))
duration_ms = Decimal(duration_us) / Decimal(1000)
last_sec_cpu[cpu_int] = time_pre_dec
last_usec_cpu[cpu_int] = time_post_dec
elapsed_time = Decimal(time_pre_dec) + Decimal(time_post_dec) / Decimal(1000000) - start_time
load = Decimal(int(mperf)*100)/ Decimal(tsc)
freq_ghz = Decimal(freq)/Decimal(1000000)
store_csv(cpu_int, time_pre_dec, time_post_dec, min_perf, des_perf, max_perf, freq_ghz, mperf, aperf, tsc, common_comm, load, duration_ms, sample_num, elapsed_time, cpu_mask)
if cpu_int > current_max_cpu:
current_max_cpu = cpu_int
# Now separate the main overall csv file into per CPU csv files.
ipt.split_csv(current_max_cpu, cpu_mask)
def signal_handler(signal, frame):
print(' SIGINT: Forcing cleanup before exit.')
if interval:
ipt.disable_trace(trace_file)
ipt.clear_trace_file()
ipt.free_trace_buffer()
sys.exit(0)
trace_file = "/sys/kernel/debug/tracing/events/amd_cpu/enable"
signal.signal(signal.SIGINT, signal_handler)
interval = ""
file_name = ""
cpu_list = ""
test_name = ""
memory = "10240"
graph_data_present = False;
valid1 = False
valid2 = False
cpu_mask = zeros((MAX_CPUS,), dtype=int)
try:
opts, args = getopt.getopt(sys.argv[1:],"ht:i:c:n:m:",["help","trace_file=","interval=","cpu=","name=","memory="])
except getopt.GetoptError:
ipt.print_help('amd_pstate')
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print()
sys.exit()
elif opt in ("-t", "--trace_file"):
valid1 = True
location = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))
file_name = os.path.join(location, arg)
elif opt in ("-i", "--interval"):
valid1 = True
interval = arg
elif opt in ("-c", "--cpu"):
cpu_list = arg
elif opt in ("-n", "--name"):
valid2 = True
test_name = arg
elif opt in ("-m", "--memory"):
memory = arg
if not (valid1 and valid2):
ipt.print_help('amd_pstate')
sys.exit()
if cpu_list:
for p in re.split("[,]", cpu_list):
if int(p) < MAX_CPUS :
cpu_mask[int(p)] = 1
else:
for i in range (0, MAX_CPUS):
cpu_mask[i] = 1
if not os.path.exists('results'):
os.mkdir('results')
ipt.fix_ownership('results')
os.chdir('results')
if os.path.exists(test_name):
print('The test name directory already exists. Please provide a unique test name. Test re-run not supported, yet.')
sys.exit()
os.mkdir(test_name)
ipt.fix_ownership(test_name)
os.chdir(test_name)
cur_version = sys.version_info
print('python version (should be >= 2.7):')
print(cur_version)
cleanup_data_files()
if interval:
file_name = "/sys/kernel/debug/tracing/trace"
ipt.clear_trace_file()
ipt.set_trace_buffer_size(memory)
ipt.enable_trace(trace_file)
time.sleep(int(interval))
ipt.disable_trace(trace_file)
current_max_cpu = 0
read_trace_data(file_name, cpu_mask)
if interval:
ipt.clear_trace_file()
ipt.free_trace_buffer()
if graph_data_present == False:
print('No valid data to plot')
sys.exit(2)
for cpu_no in range(0, current_max_cpu + 1):
plot_per_cpu_freq(cpu_no)
plot_per_cpu_des_perf(cpu_no)
plot_per_cpu_load(cpu_no)
plot_all_cpu_des_perf()
plot_all_cpu_frequency()
plot_all_cpu_load()
for root, dirs, files in os.walk('.'):
for f in files:
ipt.fix_ownership(f)
os.chdir('../../')

232
tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py
View File

@ -63,7 +63,7 @@ C_USEC = 3
C_SEC = 2
C_CPU = 1
global sample_num, last_sec_cpu, last_usec_cpu, start_time, testname
global sample_num, last_sec_cpu, last_usec_cpu, start_time, testname, trace_file
# 11 digits covers uptime to 115 days
getcontext().prec = 11
@ -72,17 +72,17 @@ sample_num =0
last_sec_cpu = [0] * MAX_CPUS
last_usec_cpu = [0] * MAX_CPUS
def print_help():
print('intel_pstate_tracer.py:')
def print_help(driver_name):
print('%s_tracer.py:'%driver_name)
print(' Usage:')
print(' If the trace file is available, then to simply parse and plot, use (sudo not required):')
print(' ./intel_pstate_tracer.py [-c cpus] -t <trace_file> -n <test_name>')
print(' ./%s_tracer.py [-c cpus] -t <trace_file> -n <test_name>'%driver_name)
print(' Or')
print(' ./intel_pstate_tracer.py [--cpu cpus] ---trace_file <trace_file> --name <test_name>')
print(' ./%s_tracer.py [--cpu cpus] ---trace_file <trace_file> --name <test_name>'%driver_name)
print(' To generate trace file, parse and plot, use (sudo required):')
print(' sudo ./intel_pstate_tracer.py [-c cpus] -i <interval> -n <test_name> -m <kbytes>')
print(' sudo ./%s_tracer.py [-c cpus] -i <interval> -n <test_name> -m <kbytes>'%driver_name)
print(' Or')
print(' sudo ./intel_pstate_tracer.py [--cpu cpus] --interval <interval> --name <test_name> --memory <kbytes>')
print(' sudo ./%s_tracer.py [--cpu cpus] --interval <interval> --name <test_name> --memory <kbytes>'%driver_name)
print(' Optional argument:')
print(' cpus: comma separated list of CPUs')
print(' kbytes: Kilo bytes of memory per CPU to allocate to the trace buffer. Default: 10240')
@ -323,7 +323,7 @@ def set_4_plot_linestyles(g_plot):
g_plot('set style line 3 linetype 1 linecolor rgb "purple" pointtype -1')
g_plot('set style line 4 linetype 1 linecolor rgb "blue" pointtype -1')
def store_csv(cpu_int, time_pre_dec, time_post_dec, core_busy, scaled, _from, _to, mperf, aperf, tsc, freq_ghz, io_boost, common_comm, load, duration_ms, sample_num, elapsed_time, tsc_ghz):
def store_csv(cpu_int, time_pre_dec, time_post_dec, core_busy, scaled, _from, _to, mperf, aperf, tsc, freq_ghz, io_boost, common_comm, load, duration_ms, sample_num, elapsed_time, tsc_ghz, cpu_mask):
""" Store master csv file information """
global graph_data_present
@ -342,11 +342,9 @@ def store_csv(cpu_int, time_pre_dec, time_post_dec, core_busy, scaled, _from, _t
graph_data_present = True;
def split_csv():
def split_csv(current_max_cpu, cpu_mask):
""" seperate the all csv file into per CPU csv files. """
global current_max_cpu
if os.path.exists('cpu.csv'):
for index in range(0, current_max_cpu + 1):
if cpu_mask[int(index)] != 0:
@ -381,27 +379,25 @@ def clear_trace_file():
print('IO error clearing trace file ')
sys.exit(2)
def enable_trace():
def enable_trace(trace_file):
""" Enable trace """
try:
open('/sys/kernel/debug/tracing/events/power/pstate_sample/enable'
, 'w').write("1")
open(trace_file,'w').write("1")
except:
print('IO error enabling trace ')
sys.exit(2)
def disable_trace():
def disable_trace(trace_file):
""" Disable trace """
try:
open('/sys/kernel/debug/tracing/events/power/pstate_sample/enable'
, 'w').write("0")
open(trace_file, 'w').write("0")
except:
print('IO error disabling trace ')
sys.exit(2)
def set_trace_buffer_size():
def set_trace_buffer_size(memory):
""" Set trace buffer size """
try:
@ -421,7 +417,7 @@ def free_trace_buffer():
print('IO error freeing trace buffer ')
sys.exit(2)
def read_trace_data(filename):
def read_trace_data(filename, cpu_mask):
""" Read and parse trace data """
global current_max_cpu
@ -481,135 +477,137 @@ def read_trace_data(filename):
tsc_ghz = Decimal(0)
if duration_ms != Decimal(0) :
tsc_ghz = Decimal(tsc)/duration_ms/Decimal(1000000)
store_csv(cpu_int, time_pre_dec, time_post_dec, core_busy, scaled, _from, _to, mperf, aperf, tsc, freq_ghz, io_boost, common_comm, load, duration_ms, sample_num, elapsed_time, tsc_ghz)
store_csv(cpu_int, time_pre_dec, time_post_dec, core_busy, scaled, _from, _to, mperf, aperf, tsc, freq_ghz, io_boost, common_comm, load, duration_ms, sample_num, elapsed_time, tsc_ghz, cpu_mask)
if cpu_int > current_max_cpu:
current_max_cpu = cpu_int
# End of for each trace line loop
# Now seperate the main overall csv file into per CPU csv files.
split_csv()
split_csv(current_max_cpu, cpu_mask)
def signal_handler(signal, frame):
print(' SIGINT: Forcing cleanup before exit.')
if interval:
disable_trace()
disable_trace(trace_file)
clear_trace_file()
# Free the memory
free_trace_buffer()
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
if __name__ == "__main__":
trace_file = "/sys/kernel/debug/tracing/events/power/pstate_sample/enable"
signal.signal(signal.SIGINT, signal_handler)
interval = ""
filename = ""
cpu_list = ""
testname = ""
memory = "10240"
graph_data_present = False;
interval = ""
filename = ""
cpu_list = ""
testname = ""
memory = "10240"
graph_data_present = False;
valid1 = False
valid2 = False
valid1 = False
valid2 = False
cpu_mask = zeros((MAX_CPUS,), dtype=int)
cpu_mask = zeros((MAX_CPUS,), dtype=int)
try:
opts, args = getopt.getopt(sys.argv[1:],"ht:i:c:n:m:",["help","trace_file=","interval=","cpu=","name=","memory="])
except getopt.GetoptError:
print_help()
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print()
try:
opts, args = getopt.getopt(sys.argv[1:],"ht:i:c:n:m:",["help","trace_file=","interval=","cpu=","name=","memory="])
except getopt.GetoptError:
print_help('intel_pstate')
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print_help('intel_pstate')
sys.exit()
elif opt in ("-t", "--trace_file"):
valid1 = True
location = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))
filename = os.path.join(location, arg)
elif opt in ("-i", "--interval"):
valid1 = True
interval = arg
elif opt in ("-c", "--cpu"):
cpu_list = arg
elif opt in ("-n", "--name"):
valid2 = True
testname = arg
elif opt in ("-m", "--memory"):
memory = arg
if not (valid1 and valid2):
print_help('intel_pstate')
sys.exit()
elif opt in ("-t", "--trace_file"):
valid1 = True
location = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))
filename = os.path.join(location, arg)
elif opt in ("-i", "--interval"):
valid1 = True
interval = arg
elif opt in ("-c", "--cpu"):
cpu_list = arg
elif opt in ("-n", "--name"):
valid2 = True
testname = arg
elif opt in ("-m", "--memory"):
memory = arg
if not (valid1 and valid2):
print_help()
sys.exit()
if cpu_list:
for p in re.split("[,]", cpu_list):
if int(p) < MAX_CPUS :
cpu_mask[int(p)] = 1
else:
for i in range (0, MAX_CPUS):
cpu_mask[i] = 1
if cpu_list:
for p in re.split("[,]", cpu_list):
if int(p) < MAX_CPUS :
cpu_mask[int(p)] = 1
else:
for i in range (0, MAX_CPUS):
cpu_mask[i] = 1
if not os.path.exists('results'):
os.mkdir('results')
# The regular user needs to own the directory, not root.
fix_ownership('results')
if not os.path.exists('results'):
os.mkdir('results')
os.chdir('results')
if os.path.exists(testname):
print('The test name directory already exists. Please provide a unique test name. Test re-run not supported, yet.')
sys.exit()
os.mkdir(testname)
# The regular user needs to own the directory, not root.
fix_ownership('results')
fix_ownership(testname)
os.chdir(testname)
os.chdir('results')
if os.path.exists(testname):
print('The test name directory already exists. Please provide a unique test name. Test re-run not supported, yet.')
sys.exit()
os.mkdir(testname)
# The regular user needs to own the directory, not root.
fix_ownership(testname)
os.chdir(testname)
# Temporary (or perhaps not)
cur_version = sys.version_info
print('python version (should be >= 2.7):')
print(cur_version)
# Temporary (or perhaps not)
cur_version = sys.version_info
print('python version (should be >= 2.7):')
print(cur_version)
# Left as "cleanup" for potential future re-run ability.
cleanup_data_files()
# Left as "cleanup" for potential future re-run ability.
cleanup_data_files()
if interval:
filename = "/sys/kernel/debug/tracing/trace"
clear_trace_file()
set_trace_buffer_size(memory)
enable_trace(trace_file)
print('Sleeping for ', interval, 'seconds')
time.sleep(int(interval))
disable_trace(trace_file)
if interval:
filename = "/sys/kernel/debug/tracing/trace"
clear_trace_file()
set_trace_buffer_size()
enable_trace()
print('Sleeping for ', interval, 'seconds')
time.sleep(int(interval))
disable_trace()
current_max_cpu = 0
current_max_cpu = 0
read_trace_data(filename, cpu_mask)
read_trace_data(filename)
if interval:
clear_trace_file()
# Free the memory
free_trace_buffer()
if interval:
clear_trace_file()
# Free the memory
free_trace_buffer()
if graph_data_present == False:
print('No valid data to plot')
sys.exit(2)
if graph_data_present == False:
print('No valid data to plot')
sys.exit(2)
for cpu_no in range(0, current_max_cpu + 1):
plot_perf_busy_with_sample(cpu_no)
plot_perf_busy(cpu_no)
plot_durations(cpu_no)
plot_loads(cpu_no)
for cpu_no in range(0, current_max_cpu + 1):
plot_perf_busy_with_sample(cpu_no)
plot_perf_busy(cpu_no)
plot_durations(cpu_no)
plot_loads(cpu_no)
plot_pstate_cpu_with_sample()
plot_pstate_cpu()
plot_load_cpu()
plot_frequency_cpu()
plot_duration_cpu()
plot_scaled_cpu()
plot_boost_cpu()
plot_ghz_cpu()
plot_pstate_cpu_with_sample()
plot_pstate_cpu()
plot_load_cpu()
plot_frequency_cpu()
plot_duration_cpu()
plot_scaled_cpu()
plot_boost_cpu()
plot_ghz_cpu()
# It is preferrable, but not necessary, that the regular user owns the files, not root.
for root, dirs, files in os.walk('.'):
for f in files:
fix_ownership(f)
# It is preferrable, but not necessary, that the regular user owns the files, not root.
for root, dirs, files in os.walk('.'):
for f in files:
fix_ownership(f)
os.chdir('../../')
os.chdir('../../')

2
tools/power/x86/turbostat/turbostat.c
View File

@ -2323,7 +2323,7 @@ int skx_pkg_cstate_limits[16] =
};
int icx_pkg_cstate_limits[16] =
{ PCL__0, PCL__2, PCL__6, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,
{ PCL__0, PCL__2, PCL__6, PCL__6, PCLRSV, PCLRSV, PCLRSV, PCLUNL, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV, PCLRSV,
PCLRSV, PCLRSV
};