turbostat.c:8688: rapl_perf_init: Assertion `next_domain < num_domains' failed.
Two recent cleanup patches that were not supposed to change anything
broke the core_id code needed for AMD RAPL initialization:
commit 070e92361e ("tools/power turbostat: Enhance HT enumeration")
commit ddf60e38ca ("tools/power turbostat: Simplify global core_id calculation")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Since release 2025.12.02:
Add L2 statistics columns for recent Intel processors:
L2MRPS = L2 Cache M-References Per Second
L2%hit = L2 Cache Hit %
Sort work and output by cpu# rather than core#
Minor features and fixes.
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Merge tag 'turbostat-2026.02.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown:
- Add L2 statistics columns for recent Intel processors:
L2MRPS = L2 Cache M-References Per Second
L2%hit = L2 Cache Hit %
- Sort work and output by cpu# rather than core#
- Minor features and fixes
* tag 'turbostat-2026.02.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (23 commits)
tools/power turbostat: version 2026.02.14
tools/power turbostat: Fix and document --header_iterations
tools/power turbostat: Use strtoul() for iteration parsing
tools/power turbostat: Favor cpu# over core#
tools/power turbostat: Expunge logical_cpu_id
tools/power turbostat: Enhance HT enumeration
tools/power turbostat: Simplify global core_id calculation
tools/power turbostat: Unify even/odd/average counter referencing
tools/power turbostat: Allocate average counters dynamically
tools/power turbostat: Delete core_data.core_id
tools/power turbostat: Rename physical_core_id to core_id
tools/power turbostat: Cleanup package_id
tools/power turbostat: Cleanup internal use of "base_cpu"
tools/power turbostat: Add L2 cache statistics
tools/power turbostat: Remove redundant newlines from err(3) strings
tools/power turbostat: Allow more use of is_hybrid flag
tools/power turbostat: Rename "LLCkRPS" column to "LLCMRPS"
tools/power turbostat.8: Document the "--force" option
tools/power turbostat: Harden against unexpected values
tools/power turbostat: Dump hypervisor name
...
Highlights:
- amd/pmf:
- Avoid overwriting BIOS input values when events occur rapidly
- Fix PMF driver issues related to S4 (in part on crypto/ccp side)
- Add NPU metrics API (for accel side consumers)
- Allow disabling Smart PC function through a module parameter
- asus-wmi & HID/asus:
- Unification of backlight control (replaces quirks)
- Support multiple interfaces for controlling keyboard/RGB brightness
- Simplify init sequence
- hp-wmi:
- Add manual fan control for Victus S models
- Add fan mode keep-alive
- Fix platform profile values for Omen 16-wf1xxx
- Add EC offset to get the thermal profile
- intel/pmc: Show substate residencies also for non-primary PMCs
- intel/ISST:
- Store and restore data for all domains
- Write interface improvements
- lenovo-wmi:
- Support multiple Capability Data
- Add HWMON reporting and tuning support
- mellanox/mlx-platform: Add HI173 & HI174 support
- surface/aggregator_registry: Add Surface Pro 11 (QCOM)
- thinkpad_acpi: Add support for HW damage detection capability
- uniwill: Implement cTGP setting
- wmi:
- Introduce marshalling support
- Convert a few drivers to use the new buffer-based WMI API
- tools/power/x86/intel-speed-select: Allow read operations for non-root
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
amd/pmf:
- Added a module parameter to disable the Smart PC function
- Introduce new interface to export NPU metrics
- Prevent TEE errors after hibernate
- Use ring buffer to store custom BIOS input values
amd:
- Use scope-based cleanup for wbrf_record()
asus-wmi:
- add keyboard brightness event handler
- Add support for multiple kbd led handlers
- remove unused keyboard backlight quirk
crypto:
- ccp - Add an S4 restore flow
- ccp - Declare PSP dead if PSP_CMD_TEE_RING_INIT fails
- ccp - Factor out ring destroy handling to a helper
- ccp - Send PSP_CMD_TEE_RING_DESTROY when PSP_CMD_TEE_RING_INIT fails
HID: asus:
- add support for the asus-wmi brightness handler
- early return for ROG devices
- fortify keyboard handshake
- initialize additional endpoints only for certain devices
- listen to the asus-wmi brightness device instead of creating one
- move vendor initialization to probe
- simplify RGB init sequence
- use same report_id in response
hp-wmi:
- Add EC offsets to read Victus S thermal profile
- add manual fan control for Victus S models
- fix platform profile values for Omen 16-wf1xxx
- implement fan keep-alive
- order include headers
ideadpad-laptop:
- Clean up style warnings and checks
intel/pmc:
- Change LPM mode fields to u8
- Enable substate residencies for multiple PMCs
- Move LPM mode attributes to PMC
- Remove double empty line
intel/pmt:
- Replace sprintf() with sysfs_emit()
intel/uncore-freq:
- Replace sprintf() with scnprintf()
- Replace sprintf() with sysfs_emit()
intel-wmi-sbl-fw-update:
- Use new buffer-based WMI API
intel/wmi: thunderbolt:
- Use new buffer-based WMI API
ISST:
- Add missing write block check
- Check for admin capability for write commands
- Optimize suspend/resume callbacks
- Store and restore all domains data
lenovo-wmi-capdata:
- Add support for Capability Data 00
- Add support for Fan Test Data
lenovo-wmi-{capdata,other}:
- Fix HWMON channel visibility
- Support multiple Capability Data
lenovo-wmi-capdata:
- Wire up Fan Test Data
lenovo-wmi-helpers:
- Convert returned buffer into u32
lenovo-wmi-other:
- Add HWMON for fan reporting/tuning
mlx-platform:
- Add support DGX flavor of next-generation 800GB/s ethernet switch.
- Add support for new Nvidia DGX system based on class VMOD0010
Rename lenovo-wmi-capdata01 to lenovo-wmi-capdata:
- Rename lenovo-wmi-capdata01 to lenovo-wmi-capdata
surface: aggregator_registry:
- Add Surface Pro 11 (QCOM)
surface:
- Replace deprecated strcpy() in surface_button_add()
thinkpad_acpi:
- Add support to detect hardware damage detection capability.
- Add sysfs to display details of damaged device.
tools/power/x86/intel-speed-select:
- Allow non root users
- Fix file descriptor leak in isolate_cpus()
- Use pkg-config for libnl-3.0 detection
- v1.25 release
uniwill:
- Implement cTGP setting
uniwill-laptop:
- Introduce device descriptor system
wmi:
- Add helper functions for WMI string conversions
- Add kunit test for the marshalling code
- Add kunit test for the string conversion code
wmi-bmof:
- Use new buffer-based WMI API
wmi:
- Introduce marshalling support
wmi: string-kunit:
- Add missing oversized string test case
wmi:
- Update driver development guide
xiaomi-wmi:
- Use new buffer-based WMI API
yogabook:
- Clean up code style
Merges:
- Merge branch 'fixes' of into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
- Merge branch 'platform-drivers-x86-asus-kbd' into for-next
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Merge tag 'platform-drivers-x86-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
"Highlights:
- amd/pmf:
- Avoid overwriting BIOS input values when events occur rapidly
- Fix PMF driver issues related to S4 (in part on crypto/ccp side)
- Add NPU metrics API (for accel side consumers)
- Allow disabling Smart PC function through a module parameter
- asus-wmi & HID/asus:
- Unification of backlight control (replaces quirks)
- Support multiple interfaces for controlling keyboard/RGB brightness
- Simplify init sequence
- hp-wmi:
- Add manual fan control for Victus S models
- Add fan mode keep-alive
- Fix platform profile values for Omen 16-wf1xxx
- Add EC offset to get the thermal profile
- intel/pmc: Show substate residencies also for non-primary PMCs
- intel/ISST:
- Store and restore data for all domains
- Write interface improvements
- lenovo-wmi:
- Support multiple Capability Data
- Add HWMON reporting and tuning support
- mellanox/mlx-platform: Add HI173 & HI174 support
- surface/aggregator_registry: Add Surface Pro 11 (QCOM)
- thinkpad_acpi: Add support for HW damage detection capability
- uniwill: Implement cTGP setting
- wmi:
- Introduce marshalling support
- Convert a few drivers to use the new buffer-based WMI API
- tools/power/x86/intel-speed-select: Allow read operations for non-root
- Miscellaneous cleanups / refactoring / improvements"
* tag 'platform-drivers-x86-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (68 commits)
platform/x86: lenovo-wmi-{capdata,other}: Fix HWMON channel visibility
platform/x86: hp-wmi: Add EC offsets to read Victus S thermal profile
platform: mellanox: mlx-platform: Add support DGX flavor of next-generation 800GB/s ethernet switch.
platform: mellanox: mlx-platform: Add support for new Nvidia DGX system based on class VMOD0010
HID: asus: add support for the asus-wmi brightness handler
platform/x86: asus-wmi: add keyboard brightness event handler
platform/x86: asus-wmi: remove unused keyboard backlight quirk
HID: asus: listen to the asus-wmi brightness device instead of creating one
platform/x86: asus-wmi: Add support for multiple kbd led handlers
HID: asus: early return for ROG devices
HID: asus: move vendor initialization to probe
HID: asus: fortify keyboard handshake
HID: asus: use same report_id in response
HID: asus: initialize additional endpoints only for certain devices
HID: asus: simplify RGB init sequence
platform/wmi: string-kunit: Add missing oversized string test case
platform/x86/amd/pmf: Added a module parameter to disable the Smart PC function
platform/x86/uniwill: Implement cTGP setting
platform/x86: uniwill-laptop: Introduce device descriptor system
platform/x86/amd: Use scope-based cleanup for wbrf_record()
...
Since release 2025.12.02:
Add L2 statistics columns for recent Intel processors:
L2MRPS = L2 Cache M-References Per Second
L2%hit = L2 Cache Hit %
Sort work and output by cpu# rather than core#
This commit:
Version number and white space (indent -l160)
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
The "header_iterations" option is commonly used to de-clutter
the screen of redundant header label rows in an interactive session:
Eg. every 10 rows:
$ sudo turbostat --header_iterations 10 -S -q -i 1
But --header_iterations was missing from turbostat.8
Also turbostat help advertised the "-N" short option
that did not actually work:
$ turbostat --help
-N, --header_iterations num
print header every num iterations
Repair "-N"
Document "--header_iterations" on turbostat.8
Signed-off-by: Len Brown <len.brown@intel.com>
Replace strtod() with strtoul() and check errno for -n/-N options, since
num_iterations and header_iterations are unsigned long counters. Reject
zero and conversion errors; negative inputs wrap to large positive values
per standard unsigned semantics.
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Turbostat collects statistics and outputs results in "topology order",
which means it prioritizes the core# over the cpu#.
The strategy is to minimize wakesups to a core -- which is
important when measuring an idle system.
But core order is problematic, because Linux core#'s are physical
(within each package), and thus subject to APIC-id scrambling
that may be done by the hardware or the BIOS.
As a result users may be are faced with rows in a confusing order:
sudo turbostat -q --show topology,Busy%,CPU%c6,UncMHz sleep 1
Core CPU Busy% CPU%c6 UncMHz
- - 1.25 72.18 3400
0 4 7.74 0.00
1 5 1.77 88.59
2 6 0.48 96.73
3 7 0.21 98.34
4 8 0.14 96.85
5 9 0.26 97.55
6 10 0.44 97.24
7 11 0.12 96.18
8 0 5.41 0.31 3400
8 1 0.19
12 2 0.41 0.22
12 3 0.08
32 12 0.04 99.21
33 13 0.25 94.92
Abandon the legacy "core# topology order" in favor of simply
ordering by cpu#, with a special case to handle HT siblings
that may not have adjacent cpu#'s.
sudo ./turbostat -q --show topology,Busy%,CPU%c6,UncMHz sleep 1
1.003001 sec
Core CPU Busy% CPU%c6 UncMHz
- - 1.38 80.55 1600
8 0 10.94 0.00 1600
8 1 0.53
12 2 2.90 0.45
12 3 0.11
0 4 1.96 91.20
1 5 0.97 96.40
2 6 0.24 94.72
3 7 0.31 98.01
4 8 0.20 98.20
5 9 0.62 96.00
6 10 0.06 98.15
7 11 0.12 99.31
32 12 0.04 99.07
33 13 0.27 95.09
The result is that cpu#'s now take precedence over core#'s.
Signed-off-by: Len Brown <len.brown@intel.com>
Record the cpu_id of each CPU HT sibling -- will need this later.
Rename "thread_id" to "ht_id" to disambiguate that the scope
of this id is within a Core -- it is not a global cpu_id.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
Standardize the generation of globally unique core_id's
in a macro, and simplify the related code.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
Update the syntax of accesses to the even and odd counters
to match the average counters.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
The current static definition of average{} is inconsistent with
the dynamically allocated even{} and odd{} counters.
Allocate average{} counters dynamically.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
Delete redundant core_data.core_id.
Use cpus[].core_id as the single copy of the truth.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
The Linux Kernel topology sysfs is flawed.
core_id is not globally unique, but is per-package.
Turbostat works around this when it needs to, with
rapl_core_id = cpus[cpu].core_id;
rapl_core_id += cpus[cpu].package_id * nr_cores_per_package
Otherwise, turbostat handles core_id as subservient to each package.
As there is only one core_id namespace, rename
physical_core_id to simply be core_id.
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
The kernel topology sysfs uses the name "physical_package_id"
because it is allowed to be sparse.
Inside Turbostat, that physical package_id namespace is the only
package_id namespace, so re-name it to simply be "package_id"
in cpus[].
Delete the redundant copy of package_id in pkg_data.
Rely instead on the single copy of the truth in cpus[].
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
Disambiguate the uses "base_cpu":
master_cpu: lowest permitted cpu#, read global MSRs here
package_data.first_cpu: lowest permitted cpu# in that package
core_data.first_cpu: lowest permitted cpu# in the core
current_cpu: where I'm running now
No functional change.
Signed-off-by: Len Brown <len.brown@intel.com>
version 2026.02.04
Add support for L2 cache statistics: L2MRPS and L2%hit
L2 statistics join the LLC in the "cache" counter group.
While the underlying LLC perf kernel support was architectural,
L2 perf counters are model-specific:
Support Intel Xeon -- Sapphire Rapids and newer.
Support Intel Atom -- Gracemont and newer.
Support Intel Hybrid -- Alder Lake and newer.
Example:
alder-lake-n$ sudo turbostat --quiet --show CPU,Busy%,cache my_workload
CPU Busy% LLCMRPS LLC%hit L2MRPS L2%hit
- 49.82 1210 85.02 2909 31.63
0 99.14 322 88.89 767 32.38
1 0.91 1 32.47 1 18.86
2 0.20 0 40.78 0 23.34
3 99.17 295 81.79 706 31.89
4 0.68 1 58.71 1 15.61
5 99.16 299 85.65 726 31.32
6 0.08 0 45.35 0 31.71
7 99.21 293 83.63 707 30.92
where "my_workload" is a wrapper for a yogini workload
that has 4 fully-busy threads with 2MB working set each.
Note that analogous to the system summary for multiple LLC systems,
the system summary row for the L2 is the aggregate of all CPUS in the
system -- there is no per-cache roll-up.
Signed-off-by: Len Brown <len.brown@intel.com>
The "is_hybrid" is set and used only in !quiet mode.
Make it valid in both quiet and !quiet mode to allow more uses.
Signed-off-by: Len Brown <len.brown@intel.com>
The purpose of the LLC References per Second LLC column
is to qualify the significance of the LLC%hit column.
If RPS is high, then the hit rate matters.
If RPS is low, then the hit rate is not significant.
Remove unnecessary and distracting precision in the RPS column
by dividing my a million rather than by a thousand.
Signed-off-by: Len Brown <len.brown@intel.com>
Starting in turbostat v2025.01.14, turbostat refused to run
on unsupported hardware, pointing to "RUN THE LATEST VERSION"
on turbostat(8).
At that time, turbostat supported and advertised the "--force"
parameter to run anyway (with unsupported results).
Also document "--force" on turbostat.8.
Signed-off-by: Len Brown <len.brown@intel.com>
Divide-by-zero resulted if LLC references == 0
Pull the percentage division into pct() to centralize sanity checks there.
Fixes: 8808292799 ("tools/power turbostat: Print "nan" for out of range percentages")
Signed-off-by: Len Brown <len.brown@intel.com>
Both Intel and AMD use CPUID.1.ECX[31] to distinguish
between hypervisor and real hardware.
Indicate "HV" or "No-HV" accordingly.
Signed-off-by: Len Brown <len.brown@intel.com>
We dumped selected CPUID(1) features using a format that showed '-'
for a missing feature. Not so friendly to parse a bunch of dashes
when features are missing...
For CPUID(1) adopt the format we used for CPUID(6): 'No-FEATURE'
means that 'FEATURE' is not present.
Signed-off-by: Len Brown <len.brown@intel.com>
Turbostat exits during RAPL probe with:
turbostat: cpu0: msr offset 0x611 read failed: Input/output error
A binary with this bug can be used successfully with
the option "--no-msr"
Fix this regression by trusting the static AMD RAPL MSR offset.
Fixes: 19476a592b ("tools/power turbostat: Validate RAPL MSRs for AWS Nitro Hypervisor")
Signed-off-by: Len Brown <len.brown@intel.com>
This version includes the following changes:
- Allow read only commands for non root users when permitted
- Fix file descriptor leak in isolate_cpus()
- Replace hardcoded libnl3 include path
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
The file descriptor opened in isolate_cpus() when (!level) is true was
not being closed before returning, causing a file descriptor leak in
both the error path and the success path.
When write() fails at line 950, the function returns at line 953 without
closing the file descriptor. Similarly, on success, the function returns
at line 956 without closing the file descriptor.
Add close(fd) calls before both return statements to fix the resource
leak. This follows the same pattern used elsewhere in the same function
where file descriptors are properly closed before returning (see lines
1005 and 1027).
Fixes: 997074df65 ("tools/power/x86/intel-speed-select: Use cgroup v2 isolation")
Signed-off-by: Malaya Kumar Rout <mrout@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Replace hardcoded libnl3 include path with pkg-config detection to
improve portability across different distributions and build environments.
The previous implementation used a fixed path constructed from the
compiler's sysroot, which could fail on systems with non-standard
library installations. Now the build system:
- Attempts to detect libnl-3.0 include paths using pkg-config
- Falls back to /usr/include/libnl3 if pkg-config is unavailable
- Maintains backward compatibility with existing build configurations
This ensures the tool builds correctly on a wider range of systems
while preserving existing behavior when pkg-config is not present.
Closes:https://bugzilla.kernel.org/show_bug.cgi?id=220819
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
When permitted by the file /dev/isst_interface, allow to issue commands
for non root users.
When user id is non root, check if "/dev/isst_interface" can still be
opened. If this file can be opened, allow all read only commands.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
cpupower currently installs a cpupower.service unit file into unitdir
unconditionally, regardless of whether systemd is used by the host.
Improve the installation procedure by making this systemd step optional:
a 'SYSTEMD' build parameter that defaults to 'true' and can be set to
'false' to disable the installation of systemd's unit file.
Since 'SYSTEMD' defaults to true, the current behavior is kept as the
default.
Link: https://lore.kernel.org/r/20260113132753.1730020-2-joaomarcos.costa@bootlin.com
Signed-off-by: João Marcos Costa <joaomarcos.costa@bootlin.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
cpuidle_state_get_one_value() never cleared errno before calling
strtoull(), so a prior ERANGE caused every cpuidle counter read to
return zero. Reset errno to 0 before the conversion so each sysfs read
is evaluated independently.
Link: https://lore.kernel.org/r/20251201121745.3776703-1-kaushlendra.kumar@intel.com
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Replace manual newline removal with strcspn() which is safer and
cleaner. This avoids potential out-of-bounds access on empty strings
and handles the case where no newline exists.
Link: https://lore.kernel.org/r/20251127044536.715722-1-kaushlendra.kumar@intel.com
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The capability check was inverted, causing the function to return
error when APERF support is available and proceed when it is not.
Negate the condition to return error only when APERF capability
is absent.
Link: https://lore.kernel.org/r/20251126091613.567480-1-kaushlendra.kumar@intel.com
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The cpuidle sysfs monitor printed the previous sample’s counter
value in cpuidle_stop() instead of the freshly read one. The dprint
line used previous_count[cpu][state] while current_count[cpu][state]
had just been populated. This caused misleading debug output.
Switch the logging to current_count so the post-interval snapshot
matches the displayed value.
Link: https://lore.kernel.org/r/20251202044012.3844790-1-kaushlendra.kumar@intel.com
Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Highlights:
- acer-wmi: Add PH16-72, PHN16-72, and PT14-51 fan control support
- acpi: platform_profile: Add max-power profile option (power draw limited
by the cooling hardware, may exceed battery power
draw limit when on AC power)
- amd/hsmp: Allow >1 data-fabric per socket
- asus-armoury: Add WMI attributes driver to expose miscellaneous
WMI functions through fw_attributes (deprecates
the custom BIOS features interface through asus-wmi)
- asus-wmi: Use brightness_set_blocking() for kbd led
- ayaneo-ec: Add Ayaneo Embedded Controller driver
- fs/nls:
- Fix utf16 -> utf8 string conversion in output size restricted cases
- Improve error code consistency for utf8 -> utf32 conversions
- ideapad-laptop: Fast (Rapid Charge) charge type support
- intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
- intel/pmc:
- Arrow Lake telemetry GUID improvements
- Add support for Wildcat Lake PMC information
- intel_pmc_ipc: Fix ACPI buffer memleak
- intel/punit_ipc: Fix memory corruption
- intel/vsec: Wildcat Lake PMT telemetry support
- lenovo-wmi-gamezone: Map "Extreme" performance mode to max-power
- lg-laptop: Add support for the HDAP opregion field
- serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing projects
- thinkpad-t14s-ec: Improve suspend/resume support (lid LEDs, keyboard
backlight)
- uniwill: Add Uniwill laptop driver
- wmi: Move under drivers/platform/wmi as non-x86 WMI support is around
the corner and other WMI features will require adding more C
files as well
- tools/power/x86/intel-speed-select: v1.24
- Check feature status to check if the feature enablement was successful
- Reset SST-TF bucket structure to display valid bucket info
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
acer-wmi:
- Add fan control support
- Add support for PHN16-72
- Enable fan control for PH16-72 and PT14-51
- Fix setting of fan behavior
acpi:
- platform_profile - Add max-power profile option
Add Uniwill laptop driver:
- Add Uniwill laptop driver
alienware-wmi-wmax:
- Simplify FW profile to pprof matching
amd: hfi:
- Remove redundant assignment to .owner
- Remove unused cpumask from cpuinfo struct
amd/hsmp:
- Replace amd_num_nodes() with topology_max_packages()
amd/pmf:
- Add BIOS_INPUTS_MAX macro to replace hardcoded array size
- Refactor repetitive BIOS output handling
- Rename IPU metrics fields to NPU for consistency
- Replace magic table id with METRICS_TABLE_ID
- Use devm_mutex_init() for mutex initialization
- Use explicit SET_CMD/GET_CMD flags in amd_pmf_send_cmd()
arm64: thinkpad-t14s-ec:
- add suspend handler for keyboard backlight
- add system PM hooks
asus-armoury:
- add apu-mem control support
- add panel_hd_mode attribute
- add ppt_* and nv_* tuning knobs
- add screen auto-brightness toggle
- add support for FA507UV
- add support for GA503QR
- Fix error code in mini_led_mode_current_value_store()
- fix mini-led mode show
- fix only DC tunables being available
- move existing tunings to asus-armoury module
asus-wmi:
- deprecate bios features
- export symbols used for read/write WMI
- rename ASUS_WMI_DEVID_PPT_FPPT
- use brightness_set_blocking() for kbd led
ayaneo-ec:
- Add Ayaneo Embedded Controller platform driver
- Add charge control support
- Add controller power and modules attributes
- Add hwmon support
- Add suspend hook
- Move Ayaneo devices from oxpec to ayaneo-ec
Documentation: laptops:
- Add documentation for uniwill laptops
fs/nls:
- Fix inconsistency between utf8_to_utf32() and utf32_to_utf8()
- Fix utf16 to utf8 conversion
hp-wmi:
- Order DMI board name arrays
ideapad-laptop: Add charge_types:
- Fast (Rapid Charge)
ideapad-laptop:
- Protect GBMD/SBMC calls with mutex
- Support multiple power_supply_ext definitions
- Use str_on_off() helper
intel/hid:
- Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
intel/pmc:
- Add DMU GUID to Arrow Lake U/H
- Add support for multiple DMU GUIDs
- Enable SSRAM support for Wildcat Lake
intel_pmc_ipc:
- fix ACPI buffer memory leak
intel/pmc:
- Relocate lpm_req_guid to pmc_reg_map
- Remove redundant has_die_c6 variable
- Rename PMC index variable to pmc_idx
- Update Arrow Lake telemetry GUID
intel/vsec:
- Add support for Wildcat Lake
lenovo-wmi-gamezone Use max-power rather than balanced-performance:
- lenovo-wmi-gamezone Use max-power rather than balanced-performance
lg-laptop:
- Add support for the HDAP opregion field
serial-multi-instantiate:
- Add IRQ_RESOURCE_OPT for IRQ missing projects
surface: acpi-notify:
- add WQ_PERCPU to alloc_workqueue users
surface: aggregator:
- Omit a variable reassignment in ssam_serial_hub_probe()
surface:
- replace use of system_wq with system_percpu_wq
tools/power/x86/intel-speed-select:
- Check feature status
- Reset isst_turbo_freq_info for invalid buckets
- v1.24 release
uniwill:
- Add TUXEDO devices
- Handle more WMI events required for TUXEDO devices
wmi-gamezone:
- Add Legion Go 2 Quirks
wmi:
- Move WMI core code into a separate directory
- Remove extern keyword from prototypes
- Use correct type when populating ACPI objects
x86-android-tablets:
- Omit a variable reassignment in lenovo_yoga_tab2_830_1050_init_codec()
x86:
- replace use of system_wq with system_percpu_wq
Merges:
- Merge branch 'fixes' of into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into for-next
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Merge tag 'platform-drivers-x86-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- acer-wmi: Add PH16-72, PHN16-72, and PT14-51 fan control support
- acpi: platform_profile: Add max-power profile option (power draw
limited by the cooling hardware, may exceed battery power draw limit
when on AC power)
- amd/hsmp: Allow more than one data-fabric per socket
- asus-armoury: Add WMI attributes driver to expose miscellaneous WMI
functions through fw_attributes (deprecates the custom BIOS features
interface through asus-wmi)
- asus-wmi: Use brightness_set_blocking() for kbd led
- ayaneo-ec: Add Ayaneo Embedded Controller driver
- fs/nls:
- Fix utf16 to utf8 string conversion when output size restricted
- Improve error code consistency for utf8 to utf32 conversions
- ideapad-laptop: Fast (Rapid Charge) charge type support
- intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
- intel/pmc:
- Arrow Lake telemetry GUID improvements
- Add support for Wildcat Lake PMC information
- intel_pmc_ipc: Fix ACPI buffer memleak
- intel/punit_ipc: Fix memory corruption
- intel/vsec: Wildcat Lake PMT telemetry support
- lenovo-wmi-gamezone: Map "Extreme" performance mode to max-power
- lg-laptop: Add support for the HDAP opregion field
- serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing
projects
- thinkpad-t14s-ec: Improve suspend/resume support (lid LEDs, keyboard
backlight)
- uniwill: Add Uniwill laptop driver
- wmi: Move under drivers/platform/wmi as non-x86 WMI support is around
the corner and other WMI features will require adding more C files as
well
- tools/power/x86/intel-speed-select: v1.24
- Check feature status to check if the feature enablement was
successful
- Reset SST-TF bucket structure to display valid bucket info
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (73 commits)
tools/power/x86/intel-speed-select: v1.24 release
tools/power/x86/intel-speed-select: Reset isst_turbo_freq_info for invalid buckets
tools/power/x86/intel-speed-select: Check feature status
platform/x86: asus-wmi: use brightness_set_blocking() for kbd led
fs/nls: Fix inconsistency between utf8_to_utf32() and utf32_to_utf8()
platform/x86: asus-armoury: add support for GA503QR
platform/x86: intel_pmc_ipc: fix ACPI buffer memory leak
platform/x86: hp-wmi: Order DMI board name arrays
platform/x86/intel/hid: Add Dell Pro Rugged 10/12 tablet to VGBS DMI quirks
platform: surface: replace use of system_wq with system_percpu_wq
platform: x86: replace use of system_wq with system_percpu_wq
platform/surface: acpi-notify: add WQ_PERCPU to alloc_workqueue users
platform/x86: wmi-gamezone: Add Legion Go 2 Quirks
platform/x86: lenovo-wmi-gamezone Use max-power rather than balanced-performance
acpi: platform_profile - Add max-power profile option
platform/x86/amd/pmf: Use devm_mutex_init() for mutex initialization
platform/x86/amd/pmf: Add BIOS_INPUTS_MAX macro to replace hardcoded array size
platform/x86: serial-multi-instantiate: Add IRQ_RESOURCE_OPT for IRQ missing projects
platform/x86/amd/pmf: Refactor repetitive BIOS output handling
platform/x86/uniwill: Add TUXEDO devices
...
Since turbostat-v2025.09.09:
Add LLC statistics columns:
LLCkRPS = Last Level Cache Thousands of References Per Second
LLC%hit = Last Level Cache Hit %
Recognize Wildcat Lake and Nova Lake platforms
Add MSR check for Android
Add APERF check for VMWARE
Add RAPL check for AWS
Minor fixes to turbostat (and x86_energy_perf_policy)
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Merge tag 'turbostat-v2025.12.02' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown:
- Add LLC statistics columns:
LLCkRPS = Last Level Cache Thousands of References Per Second
LLC%hit = Last Level Cache Hit %
- Recognize Wildcat Lake and Nova Lake platforms
- Add MSR check for Android
- Add APERF check for VMWARE
- Add RAPL check for AWS
- Minor fixes to turbostat (and x86_energy_perf_policy)
* tag 'turbostat-v2025.12.02' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (21 commits)
tools/power turbostat: version 2025.12.02
tools/power turbostat: Print wide names only for RAW 64-bit columns
tools/power turbostat: Print percentages in 8-columns
tools/power turbostat: Print "nan" for out of range percentages
tools/power turbostat: Validate APERF access for VMWARE
tools/power turbostat: Enhance perf probe
tools/power turbostat: Validate RAPL MSRs for AWS Nitro Hypervisor
tools/power x86_energy_perf_policy: Fix potential NULL pointer dereference
tools/power x86_energy_perf_policy: Fix format string in error message
tools/power x86_energy_perf_policy: Simplify Android MSR probe
tools/power x86_energy_perf_policy: Add Android MSR device support
tools/power turbostat: Add run-time MSR driver probe
tools/power turbostat: Set per_cpu_msr_sum to NULL after free
tools/power turbostat: Add LLC stats
tools/power turbostat: Remove dead code
tools/power turbostat: Refactor floating point printout code
tools/power turbostat.8: Update example
tools/power turbostat: Refactor added-counter value printing code
tools/power turbostat: Refactor added column header printing
tools/power turbostat: Add Wildcat Lake and Nova Lake support
...
This version includes the following changes:
- Check feature status to check if the feature enablement was successful
- Reset SST-TF bucket structure to display valid bucket info
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
With SST-TF version 2 only 3 buckets are present. The information in
others buckets can be junk. So initialize the info structure of type
isst_turbo_freq_info, before issing ioctl to get bucket information.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
After change of enable/disable status of SST-CP, SST-TF and SST-BF
check if the hardware status change was successful. If not successful
even after retries, return failure.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
- Introduce and document a QoS limit on CPU exit latency during wakeup
from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on energy
model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the cpufreq
core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat Lake
processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate cpufreq
driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking in
it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi, Hal
Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in
generic PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power management
watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source from
the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out
of drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)
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Merge tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"There are quite a few interesting things here, including new hardware
support, new features, some bug fixes and documentation updates. In
addition, there are a usual bunch of minor fixes and cleanups all
over.
In the new hardware support category, there are intel_pstate and
intel_rapl driver updates to support new processors, Panther Lake,
Wildcat Lake, Noval Lake, and Diamond Rapids in the OOB mode, OPP and
bandwidth allocation support in the tegra186 cpufreq driver, and
JH7110S SOC support in dt-platdev cpufreq.
The new features are the PM QoS CPU latency limit for suspend-to-idle,
the netlink support for the energy model management, support for
terminating system suspend via a wakeup event during the sync of file
systems, configurable number of hibernation compression threads, the
runtime PM auto-cleanup macros, and the "poweroff" PM event that is
expected to be used during system shutdown.
Bugs are mostly fixed in cpuidle governors, but there are also fixes
elsewhere, like in the amd-pstate cpufreq driver.
Documentation updates include, but are not limited to, a new doc on
debugging shutdown hangs, cross-referencing fixes and cleanups in the
intel_pstate documentation, and updates of comments in the core
hibernation code.
Specifics:
- Introduce and document a QoS limit on CPU exit latency during
wakeup from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on
energy model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the
cpufreq core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat
Lake processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate
cpufreq driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking
in it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi,
Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in generic
PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power
management watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source
from the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael
Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out of
drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)"
* tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (96 commits)
PM / devfreq: Fix typo in DFSO_DOWNDIFFERENTIAL macro name
cpuidle: Warn instead of bailing out if target residency check fails
cpuidle: Update header inclusion
Documentation: power/cpuidle: Document the CPU system wakeup latency QoS
cpuidle: Respect the CPU system wakeup QoS limit for cpuidle
sched: idle: Respect the CPU system wakeup QoS limit for s2idle
pmdomain: Respect the CPU system wakeup QoS limit for cpuidle
pmdomain: Respect the CPU system wakeup QoS limit for s2idle
PM: QoS: Introduce a CPU system wakeup QoS limit
cpuidle: governors: teo: Add missing space to the description
PM: hibernate: Extra cleanup of comments in swap handling code
PM / devfreq: tegra30: use min to simplify actmon_cpu_to_emc_rate
PM / devfreq: hisi: Fix potential UAF in OPP handling
PM / devfreq: Move governor.h to a public header location
powercap: intel_rapl: Enable MSR-based RAPL PMU support
powercap: intel_rapl: Prepare read_raw() interface for atomic-context callers
cpufreq: qcom-nvmem: fix compilation warning for qcom_cpufreq_ipq806x_match_list
PM: sleep: Call pm_sleep_fs_sync() instead of ksys_sync_helper()
PM: sleep: Add support for wakeup during filesystem sync
cpufreq: ACPI: Replace udelay() with usleep_range()
...
Since release 2025.09.09:
Add LLC statistics columns:
LLCkRPS = Last Level Cache Thousands of References Per Second
LLC%hit = Last Level Cache Hit %
Recognize Wildcat Lake and Nova Lake platforms
Add MSR check for Android
Add APERF check for VMWARE
Add RAPL check for AWS
minor fixes
This patch:
White-space only, resulting from running Lindent
on everything except the tab-justified data-tables,
and using -l150 instead of -l80 to allow long lines.
Signed-off-by: Len Brown <len.brown@intel.com>
Print a wide column header only for the case of a 64-bit RAW counter.
It turns out that wide column headers otherwise are more harm than good.
Signed-off-by: Len Brown <len.brown@intel.com>
Added counters that are FORMAT_PERCENT
do not need to be 64-bits -- 32 is plenty.
This allows the output code to fit them,
and their header, into 8-columns.
Signed-off-by: Len Brown <len.brown@intel.com>
VMWARE correctly enumerates lack of APERF and MPERF in CPUID,
but turbostat didn't consult that before attempting to access them.
Since VMWARE allows access, but always returns 0, turbostat
got confusd into an infinite reset loop.
Head this off by listening to CPUID.6.APERF_MPERF
(and rename the existing variable to make this more clear)
Reported-by: David Arcari <darcari@redhat.com>
Tested-by: David Arcari <darcari@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
check_perf_access() will now check both IPC and LLC perf counters
if they are enabled. If any fail, it now disables perf
and all perf counters.
Signed-off-by: Len Brown <len.brown@intel.com>
Even though the platform->plat_rapl_msrs enumeration may be accurate,
a VM, such as AWS Nitro Hypervisor, may deny access to the underlying MSRs.
Probe if PKG_ENERGY is readable and non-zero.
If no, ignore all RAPL MSRs.
Reported-by: Emily Ehlert <ehemily@amazon.de>
Tested-by: Emily Ehlert <ehemily@amazon.de>
Signed-off-by: Len Brown <len.brown@intel.com>
