Add documentation for the amd_3d_vcache sysfs bus platform driver interface so that userspace applications can use it to change mode preferences, either frequency or cache. Co-developed-by: Perry Yuan <perry.yuan@xxxxxxx> Signed-off-by: Perry Yuan <perry.yuan@xxxxxxx> Co-developed-by: Mario Limonciello <mario.limonciello@xxxxxxx> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@xxxxxxx> Reviewed-by: Armin Wolf <W_Armin@xxxxxx> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx> --- .../sysfs-bus-platform-drivers-amd_x3d_vcache | 12 ++++++++++++ MAINTAINERS | 1 + 2 files changed, 13 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache diff --git a/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache new file mode 100644 index 000000000000..ac3431736f5c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache @@ -0,0 +1,12 @@ +What: /sys/bus/platform/drivers/amd_x3d_vcache/AMDI0101:00/amd_x3d_mode +Date: November 2024 +KernelVersion: 6.13 +Contact: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx> +Description: (RW) AMD 3D V-Cache optimizer allows users to switch CPU core + rankings dynamically. + + This file switches between these two modes: + - "frequency" cores within the faster CCD are prioritized before + those in the slower CCD. + - "cache" cores within the larger L3 CCD are prioritized before + those in the smaller L3 CCD. diff --git a/MAINTAINERS b/MAINTAINERS index 087d76c1f6bb..d9f3d7fa8db9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -971,6 +971,7 @@ M: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx> R: Mario Limonciello <mario.limonciello@xxxxxxx> L: platform-driver-x86@xxxxxxxxxxxxxxx S: Supported +F: Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache F: drivers/platform/x86/amd/x3d_vcache.c AMD ADDRESS TRANSLATION LIBRARY (ATL) -- 2.25.1
