Changes in sysfs-platform_profile

0056b085 - Documentation: Add documentation about class interface for platform profiles

Fri, 06 Dec 2024 03:19:18 +0000

Documentation: Add documentation about class interface for platform profilesThe class interface allows changing multiple platform profiles on a systemto different values. The semantics of it are similar to the legacyinterface.Reviewed-by: Armin Wolf Tested-by: Mark Pearson Reviewed-by: Mark Pearson Reviewed-by: Ilpo Järvinen Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20241206031918.1537-23-mario.limonciello@amd.comSigned-off-by: Ilpo Järvinen List of files: /linux-6.15/Documentation/ABI/testing/sysfs-platform_profile

b25d5a1c - ACPI: platform-profile: call sysfs_notify() from platform_profile_store()

Mon, 16 Aug 2021 11:30:07 +0000

ACPI: platform-profile: call sysfs_notify() from platform_profile_store()Drivers like thinkpad_acpi and ideapad_laptop call theplatform_profile_notify() helper when the profile is changed by hardware(the embedded-controller/EC) in response to an EC handled hotkey.This allows userspace to monitor for such changes by polling for POLLPRIon the platform_profile sysfs file. But the profile can also be changedunderneath a userspace program monitoring it by anonther userspace programstoring a new value.Add a sysfs_notify() call to platform_profile_store(), so that userspaceprograms monitoring for changes also get notified in this case.Also update the documentation to document that POLLPRI polling can beused to watch for changes.Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/Documentation/ABI/testing/sysfs-platform_profile

6c0b5e3f - ACPI: platform: Add balanced-performance platform profile

Thu, 11 Feb 2021 20:17:02 +0000

ACPI: platform: Add balanced-performance platform profileSome devices, including most Microsoft Surface devices, have a platformprofile somewhere inbetween balanced and performance. More specifically,adding this profile allows the following mapping on Surface devices: Vendor Name Platform Profile ------------------------------------------ Battery Saver low-power Recommended balanced Better Performance balanced-performance Best Performance performanceSuggested-by: Hans de Goede Signed-off-by: Maximilian Luz Reviewed-by: Hans de Goede Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/Documentation/ABI/testing/sysfs-platform_profile

8e0cbf35 - Documentation: Add documentation for new platform_profile sysfs attribute

Wed, 30 Dec 2020 00:18:25 +0000

Documentation: Add documentation for new platform_profile sysfs attributeOn modern systems the platform performance, temperature, fan and otherhardware related characteristics are often dynamically configurable. Theprofile is often automatically adjusted to the load by someautomatic-mechanism (which may very well live outside the kernel).These auto platform-adjustment mechanisms often can be configured withone of several 'platform-profiles', with either a bias towards low-powerconsumption or towards performance (and higher power consumption andthermals).Introduce a new platform_profile sysfs API which offers a generic API forselecting the performance-profile of these automatic-mechanisms.Co-developed-by: Hans de Goede Signed-off-by: Mark Pearson Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/Documentation/ABI/testing/sysfs-platform_profile