<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/tools/power, branch v6.15</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>Merge tag 'turbostat-2025.05.06' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux</title>
<updated>2025-04-06T19:32:43+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-04-06T19:32:43+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=710329254dc303cd3b2df1a24674adecb1189385'/>
<id>710329254dc303cd3b2df1a24674adecb1189385</id>
<content type='text'>
Pull turbostat updates from Len Brown:

 - support up to 8192 processors

 - add cpuidle governor debug telemetry, disabled by default

 - update default output to exclude cpuidle invocation counts

 - bug fixes

* tag 'turbostat-2025.05.06' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: v2025.05.06
  tools/power turbostat: disable "cpuidle" invocation counters, by default
  tools/power turbostat: re-factor sysfs code
  tools/power turbostat: Restore GFX sysfs fflush() call
  tools/power turbostat: Document GNR UncMHz domain convention
  tools/power turbostat: report CoreThr per measurement interval
  tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192
  tools/power turbostat: Add idle governor statistics reporting
  tools/power turbostat: Fix names matching
  tools/power turbostat: Allow Zero return value for some RAPL registers
  tools/power turbostat: Clustered Uncore MHz counters should honor show/hide options
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull turbostat updates from Len Brown:

 - support up to 8192 processors

 - add cpuidle governor debug telemetry, disabled by default

 - update default output to exclude cpuidle invocation counts

 - bug fixes

* tag 'turbostat-2025.05.06' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: v2025.05.06
  tools/power turbostat: disable "cpuidle" invocation counters, by default
  tools/power turbostat: re-factor sysfs code
  tools/power turbostat: Restore GFX sysfs fflush() call
  tools/power turbostat: Document GNR UncMHz domain convention
  tools/power turbostat: report CoreThr per measurement interval
  tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192
  tools/power turbostat: Add idle governor statistics reporting
  tools/power turbostat: Fix names matching
  tools/power turbostat: Allow Zero return value for some RAPL registers
  tools/power turbostat: Clustered Uncore MHz counters should honor show/hide options
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: v2025.05.06</title>
<updated>2025-04-06T18:49:20+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2025-04-06T18:49:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=03e00e373cab981ad808271b2650700cfa0fbda6'/>
<id>03e00e373cab981ad808271b2650700cfa0fbda6</id>
<content type='text'>
Support up to 8192 processors
Add cpuidle governor debug telemetry, disabled by default
Update default output to exclude cpuidle invocation counts
Bug fixes

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Support up to 8192 processors
Add cpuidle governor debug telemetry, disabled by default
Update default output to exclude cpuidle invocation counts
Bug fixes

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: disable "cpuidle" invocation counters, by default</title>
<updated>2025-04-06T18:29:57+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2025-04-06T18:29:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ec4acd3166d8a7a03b059d01b9c6f11a658e833f'/>
<id>ec4acd3166d8a7a03b059d01b9c6f11a658e833f</id>
<content type='text'>
Create "pct_idle" counter group, the sofware notion of residency
so it can now be singled out, independent of other counter groups.

Create "cpuidle" group, the cpuidle invocation counts.
Disable "cpuidle", by default.

Create "swidle" = "cpuidle" + "pct_idle".
Undocument "sysfs", the old name for "swidle", but keep it working
for backwards compatibilty.

Create "hwidle", all the HW idle counters

Modify "idle", enabled by default
"idle" = "hwidle" + "pct_idle" (and now excludes "cpuidle")

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Create "pct_idle" counter group, the sofware notion of residency
so it can now be singled out, independent of other counter groups.

Create "cpuidle" group, the cpuidle invocation counts.
Disable "cpuidle", by default.

Create "swidle" = "cpuidle" + "pct_idle".
Undocument "sysfs", the old name for "swidle", but keep it working
for backwards compatibilty.

Create "hwidle", all the HW idle counters

Modify "idle", enabled by default
"idle" = "hwidle" + "pct_idle" (and now excludes "cpuidle")

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: re-factor sysfs code</title>
<updated>2025-04-06T16:53:18+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2025-04-06T16:53:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=994633894f208a0151baaee1688ab3c431912553'/>
<id>994633894f208a0151baaee1688ab3c431912553</id>
<content type='text'>
Probe cpuidle "sysfs" residency and counts separately,
since soon we will make one disabled on, and the
other disabled off.

Clarify that some BIC (build-in-counters) are actually "groups".
since we're about to re-name some of those groups.

no functional change.

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Probe cpuidle "sysfs" residency and counts separately,
since soon we will make one disabled on, and the
other disabled off.

Clarify that some BIC (build-in-counters) are actually "groups".
since we're about to re-name some of those groups.

no functional change.

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Restore GFX sysfs fflush() call</title>
<updated>2025-04-06T16:36:03+00:00</updated>
<author>
<name>Zhang Rui</name>
<email>rui.zhang@intel.com</email>
</author>
<published>2025-03-19T00:53:07+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=f8b136ef2605c1bf62020462d10e35228760aa19'/>
<id>f8b136ef2605c1bf62020462d10e35228760aa19</id>
<content type='text'>
Do fflush() to discard the buffered data, before each read of the
graphics sysfs knobs.

Fixes: ba99a4fc8c24 ("tools/power turbostat: Remove unnecessary fflush() call")
Signed-off-by: Zhang Rui &lt;rui.zhang@intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Do fflush() to discard the buffered data, before each read of the
graphics sysfs knobs.

Fixes: ba99a4fc8c24 ("tools/power turbostat: Remove unnecessary fflush() call")
Signed-off-by: Zhang Rui &lt;rui.zhang@intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Document GNR UncMHz domain convention</title>
<updated>2025-04-06T16:31:59+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2025-04-06T16:23:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3ae8508663372b93c5556a887e96ed0ca5df0711'/>
<id>3ae8508663372b93c5556a887e96ed0ca5df0711</id>
<content type='text'>
Document that on Intel Granite Rapids Systems,
Uncore domains 0-2 are CPU domains, and
uncore domains 3-4 are IO domains.

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Document that on Intel Granite Rapids Systems,
Uncore domains 0-2 are CPU domains, and
uncore domains 3-4 are IO domains.

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: report CoreThr per measurement interval</title>
<updated>2025-04-06T16:21:25+00:00</updated>
<author>
<name>Len Brown</name>
<email>len.brown@intel.com</email>
</author>
<published>2025-04-06T15:18:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=f729775f79a9c942c6c82ed6b44bd030afe10423'/>
<id>f729775f79a9c942c6c82ed6b44bd030afe10423</id>
<content type='text'>
The CoreThr column displays total thermal throttling events
since boot time.

Change it to report events during the measurement interval.

This is more useful for showing a user the current conditions.
Total events since boot time are still available to the user via
/sys/devices/system/cpu/cpu*/thermal_throttle/*

Document CoreThr on turbostat.8

Fixes: eae97e053fe30 ("turbostat: Support thermal throttle count print")
Reported-by: Arjan van de Ven &lt;arjan@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Cc: Chen Yu &lt;yu.c.chen@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The CoreThr column displays total thermal throttling events
since boot time.

Change it to report events during the measurement interval.

This is more useful for showing a user the current conditions.
Total events since boot time are still available to the user via
/sys/devices/system/cpu/cpu*/thermal_throttle/*

Document CoreThr on turbostat.8

Fixes: eae97e053fe30 ("turbostat: Support thermal throttle count print")
Reported-by: Arjan van de Ven &lt;arjan@linux.intel.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
Cc: Chen Yu &lt;yu.c.chen@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>tools/power turbostat: Increase CPU_SUBSET_MAXCPUS to 8192</title>
<updated>2025-04-06T16:14:14+00:00</updated>
<author>
<name>Justin Ernst</name>
<email>justin.ernst@hpe.com</email>
</author>
<published>2025-03-19T20:27:31+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=eb187540d13ae260b91dbca7257bc44bd83ca8c6'/>
<id>eb187540d13ae260b91dbca7257bc44bd83ca8c6</id>
<content type='text'>
On systems with &gt;= 1024 cpus (in my case 1152), turbostat fails with the error output:
	"turbostat: /sys/fs/cgroup/cpuset.cpus.effective: cpu str malformat 0-1151"

A similar error appears with the use of turbostat --cpu when the inputted cpu
range contains a cpu number &gt;= 1024:
	# turbostat -c 1100-1151
	"--cpu 1100-1151" malformed
	...

Both errors are caused by parse_cpu_str() reaching its limit of CPU_SUBSET_MAXCPUS.

It's a good idea to limit the maximum cpu number being parsed, but 1024 is too low.
For a small increase in compute and allocated memory, increasing CPU_SUBSET_MAXCPUS
brings support for parsing cpu numbers &gt;= 1024.

Increase CPU_SUBSET_MAXCPUS to 8192, a common setting for CONFIG_NR_CPUS on x86_64.

Signed-off-by: Justin Ernst &lt;justin.ernst@hpe.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
On systems with &gt;= 1024 cpus (in my case 1152), turbostat fails with the error output:
	"turbostat: /sys/fs/cgroup/cpuset.cpus.effective: cpu str malformat 0-1151"

A similar error appears with the use of turbostat --cpu when the inputted cpu
range contains a cpu number &gt;= 1024:
	# turbostat -c 1100-1151
	"--cpu 1100-1151" malformed
	...

Both errors are caused by parse_cpu_str() reaching its limit of CPU_SUBSET_MAXCPUS.

It's a good idea to limit the maximum cpu number being parsed, but 1024 is too low.
For a small increase in compute and allocated memory, increasing CPU_SUBSET_MAXCPUS
brings support for parsing cpu numbers &gt;= 1024.

Increase CPU_SUBSET_MAXCPUS to 8192, a common setting for CONFIG_NR_CPUS on x86_64.

Signed-off-by: Justin Ernst &lt;justin.ernst@hpe.com&gt;
Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'printk-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux</title>
<updated>2025-03-28T02:22:24+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-03-28T02:22:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=96050814a3f667eb28dabb78e7b3a7b06e5243e9'/>
<id>96050814a3f667eb28dabb78e7b3a7b06e5243e9</id>
<content type='text'>
Pull printk updates from Petr Mladek:

 - New option "printk.debug_non_panic_cpus" allows to store printk
   messages from non-panic CPUs during panic. It might be useful when
   panic() fails. It is disabled by default because it increases the
   chance to see the messages printed before panic() and on the
   panic-CPU.

 - New build option "CONFIG_NULL_TTY_DEFAULT_CONSOLE" allows to build
   kernel without the virtual terminal support which prefers ttynull
   over serial console.

 - Do not unblank suspended consoles.

 - Some code clean up.

* tag 'printk-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk/panic: Add option to allow non-panic CPUs to write to the ring buffer.
  printk: Add an option to allow ttynull to be a default console device
  printk: Check CON_SUSPEND when unblanking a console
  printk: Rename console_start to console_resume
  printk: Rename console_stop to console_suspend
  printk: Rename resume_console to console_resume_all
  printk: Rename suspend_console to console_suspend_all
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull printk updates from Petr Mladek:

 - New option "printk.debug_non_panic_cpus" allows to store printk
   messages from non-panic CPUs during panic. It might be useful when
   panic() fails. It is disabled by default because it increases the
   chance to see the messages printed before panic() and on the
   panic-CPU.

 - New build option "CONFIG_NULL_TTY_DEFAULT_CONSOLE" allows to build
   kernel without the virtual terminal support which prefers ttynull
   over serial console.

 - Do not unblank suspended consoles.

 - Some code clean up.

* tag 'printk-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk/panic: Add option to allow non-panic CPUs to write to the ring buffer.
  printk: Add an option to allow ttynull to be a default console device
  printk: Check CON_SUSPEND when unblanking a console
  printk: Rename console_start to console_resume
  printk: Rename console_stop to console_suspend
  printk: Rename resume_console to console_resume_all
  printk: Rename suspend_console to console_suspend_all
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86</title>
<updated>2025-03-26T16:54:40+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-03-26T16:54:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=fb1ceb29b27cda91af35851ebab01f298d82162e'/>
<id>fb1ceb29b27cda91af35851ebab01f298d82162e</id>
<content type='text'>
Pull x86 platform drivers updates from Ilpo Järvinen:

 - alienware-wmi:
     - Refactor and split WMAX/legacy drivers

 - dell-ddv:
     - Correct +0.1 offset in temperature
     - Use the power supply extension mechanism for battery temperatures

 - intel/pmc:
     - Refactor init to mostly use a common init function
     - Add support for Arrow Lake U/H
     - Add support for Panther Lake

 - intel/sst:
     - Improve multi die handling
     - Prefix header search path with sysroot (fixes cross-compiling)

 - lenovo-wmi-hotkey-utilities:
     - Support for mic &amp; audio mute LEDs

 - samsung-galaxybook:
     - Add driver for Samsung Galaxy Book series

 - wmi:
     - Rework WCxx/WExx ACPI method handling
     - Enable data block collection when the data block is set

 - platform/arm:
     - Add Huawei Matebook E Go EC driver

 - platform/mellanox:
     - Relocate to drivers/platform/mellanox/
     - mlxbf-bootctl:
     - RTC battery status sysfs support

 - Miscellaneous cleanups / refactoring / improvements

* tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (75 commits)
  platform/x86: x86-android-tablets: Add select POWER_SUPPLY to Kconfig
  platform/x86/amd/pmf: convert timeouts to secs_to_jiffies()
  platform/x86: thinkpad_acpi: convert timeouts to secs_to_jiffies()
  irqdomain: platform/x86: Switch to irq_domain_create_linear()
  platform/x86/amd/pmc: fix leak in probe()
  tools/power/x86/intel-speed-select: v1.22 release
  tools/power/x86/intel-speed-select: Prefix header search path with sysroot
  tools/power/x86/intel-speed-select: Die ID for IO dies
  tools/power/x86/intel-speed-select: Fix the condition to check multi die system
  tools/power/x86/intel-speed-select: Prevent increasing MAX_DIE_PER_PACKAGE
  platform/x86/amd/pmc: Use managed APIs for mutex
  platform/x86/amd/pmc: Remove unnecessary line breaks
  platform/x86/amd/pmc: Move macros and structures to the PMC header file
  platform/x86/amd/pmc: Notify user when platform does not support s0ix transition
  platform/x86: dell-ddv: Use the power supply extension mechanism
  platform/x86: dell-ddv: Use devm_battery_hook_register
  platform/x86: dell-ddv: Fix temperature calculation
  platform/x86: thinkpad_acpi: check the return value of devm_mutex_init()
  platform/x86: samsung-galaxybook: Fix block_recording not supported logic
  platform/x86: dell-uart-backlight: Make dell_uart_bl_serdev_driver static
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull x86 platform drivers updates from Ilpo Järvinen:

 - alienware-wmi:
     - Refactor and split WMAX/legacy drivers

 - dell-ddv:
     - Correct +0.1 offset in temperature
     - Use the power supply extension mechanism for battery temperatures

 - intel/pmc:
     - Refactor init to mostly use a common init function
     - Add support for Arrow Lake U/H
     - Add support for Panther Lake

 - intel/sst:
     - Improve multi die handling
     - Prefix header search path with sysroot (fixes cross-compiling)

 - lenovo-wmi-hotkey-utilities:
     - Support for mic &amp; audio mute LEDs

 - samsung-galaxybook:
     - Add driver for Samsung Galaxy Book series

 - wmi:
     - Rework WCxx/WExx ACPI method handling
     - Enable data block collection when the data block is set

 - platform/arm:
     - Add Huawei Matebook E Go EC driver

 - platform/mellanox:
     - Relocate to drivers/platform/mellanox/
     - mlxbf-bootctl:
     - RTC battery status sysfs support

 - Miscellaneous cleanups / refactoring / improvements

* tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (75 commits)
  platform/x86: x86-android-tablets: Add select POWER_SUPPLY to Kconfig
  platform/x86/amd/pmf: convert timeouts to secs_to_jiffies()
  platform/x86: thinkpad_acpi: convert timeouts to secs_to_jiffies()
  irqdomain: platform/x86: Switch to irq_domain_create_linear()
  platform/x86/amd/pmc: fix leak in probe()
  tools/power/x86/intel-speed-select: v1.22 release
  tools/power/x86/intel-speed-select: Prefix header search path with sysroot
  tools/power/x86/intel-speed-select: Die ID for IO dies
  tools/power/x86/intel-speed-select: Fix the condition to check multi die system
  tools/power/x86/intel-speed-select: Prevent increasing MAX_DIE_PER_PACKAGE
  platform/x86/amd/pmc: Use managed APIs for mutex
  platform/x86/amd/pmc: Remove unnecessary line breaks
  platform/x86/amd/pmc: Move macros and structures to the PMC header file
  platform/x86/amd/pmc: Notify user when platform does not support s0ix transition
  platform/x86: dell-ddv: Use the power supply extension mechanism
  platform/x86: dell-ddv: Use devm_battery_hook_register
  platform/x86: dell-ddv: Fix temperature calculation
  platform/x86: thinkpad_acpi: check the return value of devm_mutex_init()
  platform/x86: samsung-galaxybook: Fix block_recording not supported logic
  platform/x86: dell-uart-backlight: Make dell_uart_bl_serdev_driver static
  ...
</pre>
</div>
</content>
</entry>
</feed>
