56 lines
2.3 KiB
Diff
56 lines
2.3 KiB
Diff
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From edf899b17950e1b926889b501e06c86dd867bac0 Mon Sep 17 00:00:00 2001
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From: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
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Date: Tue, 12 Nov 2024 22:33:07 +0530
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Subject: [PATCH 2/2] platform/x86/amd: amd_3d_vcache: Add sysfs ABI
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documentation
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Add documentation for the amd_3d_vcache sysfs bus platform driver
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interface so that userspace applications can use it to change mode
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preferences, either frequency or cache.
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Co-developed-by: Perry Yuan <perry.yuan@amd.com>
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Signed-off-by: Perry Yuan <perry.yuan@amd.com>
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Co-developed-by: Mario Limonciello <mario.limonciello@amd.com>
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Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
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Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
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Reviewed-by: Armin Wolf <W_Armin@gmx.de>
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Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
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Link: https://lore.kernel.org/r/20241112170307.3745777-3-Basavaraj.Natikar@amd.com
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Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Signed-off-by: Alexandre Frade <kernel@xanmod.org>
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---
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.../sysfs-bus-platform-drivers-amd_x3d_vcache | 12 ++++++++++++
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MAINTAINERS | 1 +
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2 files changed, 13 insertions(+)
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create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache
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--- /dev/null
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+++ b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache
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@@ -0,0 +1,12 @@
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+What: /sys/bus/platform/drivers/amd_x3d_vcache/AMDI0101:00/amd_x3d_mode
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+Date: November 2024
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+KernelVersion: 6.13
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+Contact: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
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+Description: (RW) AMD 3D V-Cache optimizer allows users to switch CPU core
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+ rankings dynamically.
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+
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+ This file switches between these two modes:
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+ - "frequency" cores within the faster CCD are prioritized before
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+ those in the slower CCD.
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+ - "cache" cores within the larger L3 CCD are prioritized before
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+ those in the smaller L3 CCD.
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--- a/MAINTAINERS
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+++ b/MAINTAINERS
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@@ -970,6 +970,7 @@ M: Basavaraj Natikar <Basavaraj.Natikar@
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R: Mario Limonciello <mario.limonciello@amd.com>
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L: platform-driver-x86@vger.kernel.org
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S: Supported
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+F: Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache
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F: drivers/platform/x86/amd/x3d_vcache.c
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AMD ADDRESS TRANSLATION LIBRARY (ATL)
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