Pull power management updates from Rafael Wysocki:
"These add support for 'artificial' Energy Models in which power
numbers for different entities may be in different scales, add support
for some new hardware, fix bugs and clean up code in multiple places.
Specifics:
- Update the Energy Model support code to allow the Energy Model to
be artificial, which means that the power values may not be on a
uniform scale with other devices providing power information, and
update the cpufreq_cooling and devfreq_cooling thermal drivers to
support artificial Energy Models (Lukasz Luba).
- Make DTPM check the Energy Model type (Lukasz Luba).
- Fix policy counter decrementation in cpufreq if Energy Model is in
use (Pierre Gondois).
- Add CPU-based scaling support to passive devfreq governor (Saravana
Kannan, Chanwoo Choi).
- Update the rk3399_dmc devfreq driver (Brian Norris).
- Export dev_pm_ops instead of suspend() and resume() in the IIO
chemical scd30 driver (Jonathan Cameron).
- Add namespace variants of EXPORT[_GPL]_SIMPLE_DEV_PM_OPS and
PM-runtime counterparts (Jonathan Cameron).
- Move symbol exports in the IIO chemical scd30 driver into the
IIO_SCD30 namespace (Jonathan Cameron).
- Avoid device PM-runtime usage count underflows (Rafael Wysocki).
- Allow dynamic debug to control printing of PM messages (David
Cohen).
- Fix some kernel-doc comments in hibernation code (Yang Li, Haowen
Bai).
- Preserve ACPI-table override during hibernation (Amadeusz
Sławiński).
- Improve support for suspend-to-RAM for PSCI OSI mode (Ulf Hansson).
- Make Intel RAPL power capping driver support the RaptorLake and
AlderLake N processors (Zhang Rui, Sumeet Pawnikar).
- Remove redundant store to value after multiply in the RAPL power
capping driver (Colin Ian King).
- Add AlderLake processor support to the intel_idle driver (Zhang
Rui).
- Fix regression leading to no genpd governor in the PSCI cpuidle
driver and fix the riscv-sbi cpuidle driver to allow a genpd
governor to be used (Ulf Hansson).
- Fix cpufreq governor clean up code to avoid using kfree() directly
to free kobject-based items (Kevin Hao).
- Prepare cpufreq for powerpc's asm/prom.h cleanup (Christophe
Leroy).
- Make intel_pstate notify frequency invariance code when no_turbo is
turned on and off (Chen Yu).
- Add Sapphire Rapids OOB mode support to intel_pstate (Srinivas
Pandruvada).
- Make cpufreq avoid unnecessary frequency updates due to mismatch
between hardware and the frequency table (Viresh Kumar).
- Make remove_cpu_dev_symlink() clear the real_cpus mask to simplify
code (Viresh Kumar).
- Rearrange cpufreq_offline() and cpufreq_remove_dev() to make the
calling convention for some driver callbacks consistent (Rafael
Wysocki).
- Avoid accessing half-initialized cpufreq policies from the show()
and store() sysfs functions (Schspa Shi).
- Rearrange cpufreq_offline() to make the calling convention for some
driver callbacks consistent (Schspa Shi).
- Update CPPC handling in cpufreq (Pierre Gondois).
- Extend dev_pm_domain_detach() doc (Krzysztof Kozlowski).
- Move genpd's time-accounting to ktime_get_mono_fast_ns() (Ulf
Hansson).
- Improve the way genpd deals with its governors (Ulf Hansson).
- Update the turbostat utility to version 2022.04.16 (Len Brown, Dan
Merillat, Sumeet Pawnikar, Zephaniah E. Loss-Cutler-Hull, Chen Yu)"
* tag 'pm-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (94 commits)
PM: domains: Trust domain-idle-states from DT to be correct by genpd
PM: domains: Measure power-on/off latencies in genpd based on a governor
PM: domains: Allocate governor data dynamically based on a genpd governor
PM: domains: Clean up some code in pm_genpd_init() and genpd_remove()
PM: domains: Fix initialization of genpd's next_wakeup
PM: domains: Fixup QoS latency measurements for IRQ safe devices in genpd
PM: domains: Measure suspend/resume latencies in genpd based on governor
PM: domains: Move the next_wakeup variable into the struct gpd_timing_data
PM: domains: Allocate gpd_timing_data dynamically based on governor
PM: domains: Skip another warning in irq_safe_dev_in_sleep_domain()
PM: domains: Rename irq_safe_dev_in_no_sleep_domain() in genpd
PM: domains: Don't check PM_QOS_FLAG_NO_POWER_OFF in genpd
PM: domains: Drop redundant code for genpd always-on governor
PM: domains: Add GENPD_FLAG_RPM_ALWAYS_ON for the always-on governor
powercap: intel_rapl: remove redundant store to value after multiply
cpufreq: CPPC: Enable dvfs_possible_from_any_cpu
cpufreq: CPPC: Enable fast_switch
ACPI: CPPC: Assume no transition latency if no PCCT
ACPI: bus: Set CPPC _OSC bits for all and when CPPC_LIB is supported
ACPI: CPPC: Check _OSC for flexible address space
...
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA kernel code to upstream revision 20220331,
improve handling of PCI devices that are in D3cold during system
initialization, add support for a few features, fix bugs and clean up
code.
Specifics:
- Update ACPICA code in the kernel to upstream revision 20220331
including the following changes:
- Add support for the Windows 11 _OSI string (Mario Limonciello)
- Add the CFMWS subtable to the CEDT table (Lawrence Hileman).
- iASL: NHLT: Treat Terminator as specific_config (Piotr
Maziarz).
- iASL: NHLT: Fix parsing undocumented bytes at the end of
Endpoint Descriptor (Piotr Maziarz).
- iASL: NHLT: Rename linux specific strucures to device_info
(Piotr Maziarz).
- Add new ACPI 6.4 semantics to Load() and LoadTable() (Bob
Moore).
- Clean up double word in comment (Tom Rix).
- Update copyright notices to the year 2022 (Bob Moore).
- Remove some tabs and // comments - automated cleanup (Bob
Moore).
- Replace zero-length array with flexible-array member (Gustavo
A. R. Silva).
- Interpreter: Add units to time variable names (Paul Menzel).
- Add support for ARM Performance Monitoring Unit Table (Besar
Wicaksono).
- Inform users about ACPI spec violation related to sleep length
(Paul Menzel).
- iASL/MADT: Add OEM-defined subtable (Bob Moore).
- Interpreter: Fix some typo mistakes (Selvarasu Ganesan).
- Updates for revision E.d of IORT (Shameer Kolothum).
- Use ACPI_FORMAT_UINT64 for 64-bit output (Bob Moore).
- Improve debug messages in the ACPI device PM code (Rafael Wysocki).
- Block ASUS B1400CEAE from suspend to idle by default (Mario
Limonciello).
- Improve handling of PCI devices that are in D3cold during system
initialization (Rafael Wysocki).
- Fix BERT error region memory mapping (Lorenzo Pieralisi).
- Add support for NVIDIA 16550-compatible port subtype to the SPCR
parsing code (Jeff Brasen).
- Use static for BGRT_SHOW kobj_attribute defines (Tom Rix).
- Fix missing prototype warning for acpi_agdi_init() (Ilkka
Koskinen).
- Fix missing ERST record ID in the APEI code (Liu Xinpeng).
- Make APEI error injection to refuse to inject into the zero page
(Tony Luck).
- Correct description of INT3407 / INT3532 DPTF attributes in sysfs
(Sumeet Pawnikar).
- Add support for high frequency impedance notification to the DPTF
driver (Sumeet Pawnikar).
- Make mp_config_acpi_gsi() a void function (Li kunyu).
- Unify Package () representation for properties in the ACPI device
properties documentation (Andy Shevchenko).
- Include UUID in _DSM evaluation warning (Michael Niewöhner)"
* tag 'acpi-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (41 commits)
Revert "ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms"
ACPI: utils: include UUID in _DSM evaluation warning
ACPI: PM: Block ASUS B1400CEAE from suspend to idle by default
x86: ACPI: Make mp_config_acpi_gsi() a void function
ACPI: DPTF: Add support for high frequency impedance notification
ACPI: AGDI: Fix missing prototype warning for acpi_agdi_init()
ACPI: bus: Avoid non-ACPI device objects in walks over children
ACPI: DPTF: Correct description of INT3407 / INT3532 attributes
ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines
ACPI, APEI, EINJ: Refuse to inject into the zero page
ACPI: PM: Always print final debug message in acpi_device_set_power()
ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype
ACPI: docs: enumeration: Unify Package () for properties (part 2)
ACPI: APEI: Fix missing ERST record id
ACPICA: Update version to 20220331
ACPICA: exsystem.c: Use ACPI_FORMAT_UINT64 for 64-bit output
ACPICA: IORT: Updates for revision E.d
ACPICA: executer/exsystem: Fix some typo mistakes
ACPICA: iASL/MADT: Add OEM-defined subtable
ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms
...
Merge power management tools updates for 5.19-rc1:
- Update turbostat to version 2022.04.16 including the following
changes:
* No build warnings with -Wextra (Len Brown).
* Tweak --show and --hide capability (Len Brown).
* Be more useful as non-root (Len Brown).
* Fix ICX DRAM power numbers (Len Brown).
* Fix dump for AMD cpus (Dan Merillat).
* Add Power Limit4 support (Sumeet Pawnikar).
* Print power values upto three decimal (Sumeet Pawnikar).
* Allow -e for all names (Zephaniah E. Loss-Cutler-Hull).
* Allow printing header every N iterations (Zephaniah E.
Loss-Cutler-Hull).
* Support thermal throttle count print (Chen Yu).
* pm-tools:
tools/power turbostat: version 2022.04.16
tools/power turbostat: No build warnings with -Wextra
tools/power turbostat: be more useful as non-root
tools/power turbostat: fix ICX DRAM power numbers
tools/power turbostat: Support thermal throttle count print
tools/power turbostat: Allow printing header every N iterations
tools/power turbostat: Allow -e for all names.
tools/power turbostat: print power values upto three decimal
tools/power turbostat: Add Power Limit4 support
tools/power turbostat: fix dump for AMD cpus
tools/power turbostat: tweak --show and --hide capability
Merge ACPICA material for 5.19-rc1:
- Add support for the Windows 11 _OSI string (Mario Limonciello)
- Add the CFMWS subtable to the CEDT table (Lawrence Hileman).
- iASL: NHLT: Treat Terminator as specific_config (Piotr Maziarz).
- iASL: NHLT: Fix parsing undocumented bytes at the end of Endpoint
Descriptor (Piotr Maziarz).
- iASL: NHLT: Rename linux specific strucures to device_info (Piotr
Maziarz).
- Add new ACPI 6.4 semantics to Load() and LoadTable() (Bob Moore).
- Clean up double word in comment (Tom Rix).
- Update copyright notices to the year 2022 (Bob Moore).
- Remove some tabs and // comments - automated cleanup (Bob Moore).
- Replace zero-length array with flexible-array member (Gustavo A. R.
Silva).
- Interpreter: Add units to time variable names (Paul Menzel).
- Add support for ARM Performance Monitoring Unit Table (Besar
Wicaksono).
- Inform users about ACPI spec violation related to sleep length (Paul
Menzel).
- iASL/MADT: Add OEM-defined subtable (Bob Moore).
- Interpreter: Fix some typo mistakes (Selvarasu Ganesan).
- Updates for revision E.d of IORT (Shameer Kolothum).
- Use ACPI_FORMAT_UINT64 for 64-bit output (Bob Moore).
- Update version to 20220331 (Bob Moore).
* acpica: (21 commits)
Revert "ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms"
ACPICA: Update version to 20220331
ACPICA: exsystem.c: Use ACPI_FORMAT_UINT64 for 64-bit output
ACPICA: IORT: Updates for revision E.d
ACPICA: executer/exsystem: Fix some typo mistakes
ACPICA: iASL/MADT: Add OEM-defined subtable
ACPICA: executer/exsystem: Warn about sleeps greater than 10 ms
ACPICA: executer/exsystem: Inform users about ACPI spec violation
ACPICA: Add support for ARM Performance Monitoring Unit Table.
ACPICA: executer/exsystem: Add units to time variable names
ACPICA: Headers: Replace zero-length array with flexible-array member
ACPICA: Removed some tabs and // comments
ACPICA: Update copyright notices to the year 2022
ACPICA: Clean up double word in comment
ACPICA: Add new ACPI 6.4 semantics for LoadTable() operator
ACPICA: Add new ACPI 6.4 semantics to the Load() operator
ACPICA: iASL: NHLT: Rename linux specific strucures to device_info
ACPICA: iASL: NHLT: Fix parsing undocumented bytes at the end of Endpoint Descriptor
ACPICA: iASL: NHLT: Treat Terminator as specific_config
ACPICA: Add the subtable CFMWS to the CEDT table
...
Initialize perf_cap struct to avoid warning:
CC hfi-events.o
In function ‘process_hfi_event’,
inlined from ‘handle_event’ at hfi-events.c:220:5:
hfi-events.c:184:9: warning: ‘perf_cap.cpu’ may be used
uninitialized [-Wmaybe-uninitialized]
184 | process_level_change(perf_cap->cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hfi-events.c: In function ‘handle_event’:
hfi-events.c:193:25: note: ‘perf_cap.cpu’ was declared here
193 | struct perf_cap perf_cap;
| ^~~~~~~~
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20220511171208.211319-1-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Pull turbostat changes for 5.19 from Len Brown:
"Chen Yu (1):
tools/power turbostat: Support thermal throttle count print
Dan Merillat (1):
tools/power turbostat: fix dump for AMD cpus
Len Brown (5):
tools/power turbostat: tweak --show and --hide capability
tools/power turbostat: fix ICX DRAM power numbers
tools/power turbostat: be more useful as non-root
tools/power turbostat: No build warnings with -Wextra
tools/power turbostat: version 2022.04.16
Sumeet Pawnikar (2):
tools/power turbostat: Add Power Limit4 support
tools/power turbostat: print power values upto three decimal
Zephaniah E. Loss-Cutler-Hull (2):
tools/power turbostat: Allow -e for all names.
tools/power turbostat: Allow printing header every N iterations"
* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: version 2022.04.16
tools/power turbostat: No build warnings with -Wextra
tools/power turbostat: be more useful as non-root
tools/power turbostat: fix ICX DRAM power numbers
tools/power turbostat: Support thermal throttle count print
tools/power turbostat: Allow printing header every N iterations
tools/power turbostat: Allow -e for all names.
tools/power turbostat: print power values upto three decimal
tools/power turbostat: Add Power Limit4 support
tools/power turbostat: fix dump for AMD cpus
tools/power turbostat: tweak --show and --hide capability
Don't exit if used this way:
sudo setcap cap_sys_nice,cap_sys_rawio=+ep ./turbostat
sudo chmod +r /dev/cpu/*/msr
./turbostat
note: cap_sys_admin is now also needed for the perf IPC counter:
sudo setcap cap_sys_admin,cap_sys_nice,cap_sys_rawio=+ep ./turbostat
Reported-by: Artem S. Tashkinov <aros@gmx.com>
Reported-by: Toby Broom <tbroom@outlook.com>
Signed-off-by: Len Brown <len.brown@intel.com>
ICX (and its duplicates) require special hard-coded DRAM RAPL units,
rather than using the generic RAPL energy units.
Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The turbostat data is collected by end user for power evaluationit. However
it looks like we are missing enough thermal context there. Already a couple of
time we found that power management developer asking something like this:
grep -r . /sys/devices/system/cpu/cpu*/thermal_throttle/*
Print the per core thermal throttle count so as to get suffificent thermal
context.
turbostat -i 5 -s Core,CPU,CoreThr
Core CPU CoreThr
- - 104
0 0 61
0 4
1 1 0
1 5
2 2 104
2 6
3 3 7
3 7
Suggested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This gives the ability to reprint the header every N iterations, so you
can ensure that a scrolling display always has the header visible
somewhere on the screen.
Signed-off-by: Zephaniah E. Loss-Cutler-Hull <zephaniah@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Currently, there are a number of variables which are displayed by
default, enabled with -e all, and listed by --list, but which you can
not give to --enable/-e.
So you can enable CPU0c1 (in the bic array), but you can't enable C1 or
C1% (not in the bic array, but exists in sysfs).
This runs counter to both the documentation and user expectations, and
it's just not very user friendly.
As such, the mechanism used by --hide has been duplicated, and is now
also used by --enable, so we can handle unknown names gracefully.
Note: One impact of this is that truly unknown fields given to --enable
will no longer generate errors, they will be silently ignored, as --hide
does.
Signed-off-by: Zephaniah E. Loss-Cutler-Hull <zephaniah@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
turbostat --Dump exits early with status 243 (-13)
get_counters() calls get_msr_sum() on zen CPUS
for MSR_PKG_ENERGY_STAT, but per_cpu_msr_sum
has not been initialized.
Signed-off-by: Dan Merillat <git@dan.eginity.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Build of intel-speed-select will fail if you run:
$ LDFLAGS="-Wl,--as-needed" /usr/bin/make V=1
...
gcc -O2 -Wall -g -D_GNU_SOURCE -Iinclude -I/usr/include/libnl3 -Wl,--as-needed -lnl-genl-3 -lnl-3 intel-speed-select-in.o -o intel-speed-select
/usr/bin/ld: intel-speed-select-in.o: in function `handle_event':
(...)/linux/tools/power/x86/intel-speed-select/hfi-events.c:189: undefined reference to `nlmsg_hdr'
...
In this case the problem is that order when linking matters when using
the flag -Wl,--as-needed, symbols not used at that point are discarded.
So since intel-speed-select-in.o comes after, at that point the
libraries/symbols are already discarded and then missing/undefined
references are reported.
To fix this, make sure we specify LDFLAGS after the object file.
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Link: https://lore.kernel.org/r/20220404210525.725611-1-herton@redhat.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Pull Kbuild updates from Masahiro Yamada:
- Add new environment variables, USERCFLAGS and USERLDFLAGS to allow
additional flags to be passed to user-space programs.
- Fix missing fflush() bugs in Kconfig and fixdep
- Fix a minor bug in the comment format of the .config file
- Make kallsyms ignore llvm's local labels, .L*
- Fix UAPI compile-test for cross-compiling with Clang
- Extend the LLVM= syntax to support LLVM=<suffix> form for using a
particular version of LLVm, and LLVM=<prefix> form for using custom
LLVM in a particular directory path.
- Clean up Makefiles
* tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: Make $(LLVM) more flexible
kbuild: add --target to correctly cross-compile UAPI headers with Clang
fixdep: use fflush() and ferror() to ensure successful write to files
arch: syscalls: simplify uapi/kapi directory creation
usr/include: replace extra-y with always-y
certs: simplify empty certs creation in certs/Makefile
certs: include certs/signing_key.x509 unconditionally
kallsyms: ignore all local labels prefixed by '.L'
kconfig: fix missing '# end of' for empty menu
kconfig: add fflush() before ferror() check
kbuild: replace $(if A,A,B) with $(or A,B)
kbuild: Add environment variables for userprogs flags
kbuild: unify cmd_copy and cmd_shipped
Pull thermal control updates from Rafael Wysocki:
"As far as new functionality is concerned, there is a new thermal
driver for the Intel Hardware Feedback Interface (HFI) along with some
intel-speed-select utility changes to support it. There are also new
DT compatible strings for a couple of platforms, and thermal zones on
some platforms will be registered as HWmon sensors now.
Apart from the above, some drivers are updated (fixes mostly) and
there is a new piece of documentation for the Intel DPTF (Dynamic
Power and Thermal Framework) sysfs interface.
Specifics:
- Add a new thermal driver for the Intel Hardware Feedback Interface
(HFI) including the HFI initialization, HFI notification interrupt
handling and sending CPU capabilities change messages to user space
via the thermal netlink interface (Ricardo Neri, Srinivas
Pandruvada, Nathan Chancellor, Randy Dunlap).
- Extend the intel-speed-select utility to handle out-of-band CPU
configuration changes and add support for the CPU capabilities
change messages sent over the thermal netlink interface by the new
HFI thermal driver to it (Srinivas Pandruvada).
- Convert the DT bindings to yaml format for the Exynos platform and
fix and update the MAINTAINERS file for this driver (Krzysztof
Kozlowski).
- Register the thermal zones as HWmon sensors for the QCom's Tsens
driver and TI thermal platforms (Dmitry Baryshkov, Romain Naour).
- Add the msm8953 compatible documentation in the bindings (Luca
Weiss).
- Add the sm8150 platform support to the QCom LMh driver's DT binding
(Thara Gopinath).
- Check the command result from the IPC command to the BPMP in the
Tegra driver (Mikko Perttunen).
- Silence the error for normal configuration where the interrupt is
optionnal in the Broadcom thermal driver (Florian Fainelli).
- Remove remaining dead code from the TI thermal driver (Yue
Haibing).
- Don't use bitmap_weight() in end_power_clamp() in the powerclamp
driver (Yury Norov).
- Update the OS policy capabilities handshake in the int340x thermal
driver (Srinivas Pandruvada).
- Increase the policies bitmap size in int340x (Srinivas Pandruvada).
- Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the
int340x thermal driver (Rafael Wysocki).
- Check for NULL after calling kmemdup() in int340x (Jiasheng Jiang).
- Add Intel Dynamic Power and Thermal Framework (DPTF) kernel
interface documentation (Srinivas Pandruvada).
- Fix bullet list warning in the thermal documentation (Randy
Dunlap)"
* tag 'thermal-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (30 commits)
thermal: int340x: Update OS policy capability handshake
thermal: int340x: Increase bitmap size
Documentation: thermal: DPTF Documentation
MAINTAINERS: thermal: samsung: update Krzysztof Kozlowski's email
thermal/drivers/ti-soc-thermal: Remove unused function ti_thermal_get_temp()
thermal/drivers/brcmstb_thermal: Interrupt is optional
thermal: tegra-bpmp: Handle errors in BPMP response
drivers/thermal/ti-soc-thermal: Add hwmon support
dt-bindings: thermal: tsens: Add msm8953 compatible
dt-bindings: thermal: Add sm8150 compatible string for LMh
thermal/drivers/qcom/lmh: Add support for sm8150
thermal/drivers/tsens: register thermal zones as hwmon sensors
MAINTAINERS: thermal: samsung: Drop obsolete properties
dt-bindings: thermal: samsung: Convert to dtschema
tools/power/x86/intel-speed-select: v1.12 release
tools/power/x86/intel-speed-select: HFI support
tools/power/x86/intel-speed-select: OOB daemon mode
thermal: intel: hfi: INTEL_HFI_THERMAL depends on NET
thermal: netlink: Fix parameter type of thermal_genl_cpu_capability_event() stub
thermal: Replace acpi_bus_get_device()
...
Intel P-state tracer is a useful tool to tune and debug Intel P-state
driver. AMD P-state tracer import intel pstate tracer. This tool can
be used to analyze the performance of AMD P-state tracer.
Now CPU frequency, load and desired perf can be traced.
Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
'MSR_PKG_CST_CONFIG_CONTROL' encodes the deepest allowed package C-state limit,
and turbostat decodes it.
Before this patch: turbostat does not recognize value "3" on Ice Lake Xeon
(ICX) and Sapphire Rapids Xeon (SPR), treats it as "unknown", and does not
display any package C-states in the results table.
After this patch: turbostat recognizes value 3 on ICX and SPR, treats it as
"PC6", and correctly displays package C-states in the results table.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
