Documentation/ABI/testing/sysfs-class-platform-profile

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-class-platform-profile

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/testing/sysfs-class-platform-profile
Extension
[no extension]
Size
1794 bytes
Lines
51
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/class/platform-profile/platform-profile-X/name
Date:		March 2025
KernelVersion:	6.14
Description:	Name of the class device given by the driver.

		RO

What:		/sys/class/platform-profile/platform-profile-X/choices
Date:		March 2025
KernelVersion:	6.14
Description:	This file contains a space-separated list of profiles supported
		for this device.

		Drivers must use the following standard profile-names:

		====================	========================================
		low-power		Low power consumption
		cool			Cooler operation
		quiet			Quieter operation
		balanced		Balance between low power consumption
					and performance
		balanced-performance	Balance between performance and low
					power consumption with a slight bias
					towards performance
		performance		High performance operation
		max-power		Higher performance operation that may exceed
					internal battery draw limits when on AC power
		custom			Driver defined custom profile
		====================	========================================

		RO

What:		/sys/class/platform-profile/platform-profile-X/profile
Date:		March 2025
KernelVersion:	6.14
Description:	Reading this file gives the current selected profile for this
		device. Writing this file with one of the strings from
		platform_profile_choices changes the profile to the new value.

		This file can be monitored for changes by polling for POLLPRI,
		POLLPRI will be signaled on any changes, independent of those
		changes coming from a userspace write; or coming from another
		source such as e.g. a hotkey triggered profile change handled
		either directly by the embedded-controller or fully handled
		inside the kernel.

		This file may also emit the string 'custom' to indicate
		that the driver is using a driver defined custom profile.

		RW

Annotation

Implementation Notes