8e0cbf3563
On modern systems the platform performance, temperature, fan and other hardware related characteristics are often dynamically configurable. The profile is often automatically adjusted to the load by some automatic-mechanism (which may very well live outside the kernel). These auto platform-adjustment mechanisms often can be configured with one of several 'platform-profiles', with either a bias towards low-power consumption or towards performance (and higher power consumption and thermals). Introduce a new platform_profile sysfs API which offers a generic API for selecting the performance-profile of these automatic-mechanisms. Co-developed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mark Pearson <markpearson@lenovo.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
24 lines
977 B
Text
24 lines
977 B
Text
What: /sys/firmware/acpi/platform_profile_choices
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Date: October 2020
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Contact: Hans de Goede <hdegoede@redhat.com>
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Description: This file contains a space-separated list of profiles supported for this device.
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Drivers must use the following standard profile-names:
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============ ============================================
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low-power Low power consumption
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cool Cooler operation
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quiet Quieter operation
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balanced Balance between low power consumption and performance
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performance High performance operation
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============ ============================================
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Userspace may expect drivers to offer more than one of these
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standard profile names.
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What: /sys/firmware/acpi/platform_profile
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Date: October 2020
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Contact: Hans de Goede <hdegoede@redhat.com>
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Description: Reading this file gives the current selected profile for this
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device. Writing this file with one of the strings from
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platform_profile_choices changes the profile to the new value.
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