From: Adrián Larumbe Date: Thu, 30 Jan 2025 17:28:12 +0000 (+0000) Subject: Documentation/gpu: Add fdinfo meanings of panthor-*-memory tags X-Git-Tag: v6.15-rc1~120^2~20^2~35 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f780ef56f72912e39bdf0596e13c01d8e450dcc9;p=thirdparty%2Flinux.git Documentation/gpu: Add fdinfo meanings of panthor-*-memory tags A previous commit enabled display of driver-internal kernel BO sizes through the device file's fdinfo interface. Expand the description of the relevant driver-specific key:value pairs with the definitions of the new panthor-*-memory ones. Reviewed-by: Mihail Atanassov Reviewed-by: Liviu Dudau Reviewed-by: Steven Price Signed-off-by: Adrián Larumbe Signed-off-by: Boris Brezillon Link: https://patchwork.freedesktop.org/patch/msgid/20250130172851.941597-5-adrian.larumbe@collabora.com --- diff --git a/Documentation/gpu/panthor.rst b/Documentation/gpu/panthor.rst index 3f8979fa2b86e..7a841741278fb 100644 --- a/Documentation/gpu/panthor.rst +++ b/Documentation/gpu/panthor.rst @@ -26,6 +26,8 @@ the currently possible format options: drm-cycles-panthor: 94439687187 drm-maxfreq-panthor: 1000000000 Hz drm-curfreq-panthor: 1000000000 Hz + panthor-resident-memory: 10396 KiB + panthor-active-memory: 10396 KiB drm-total-memory: 16480 KiB drm-shared-memory: 0 drm-active-memory: 16200 KiB @@ -44,3 +46,11 @@ driver by writing into the appropriate sysfs node:: Where `N` is a bit mask where cycle and timestamp sampling are respectively enabled by the first and second bits. + +Possible `panthor-*-memory` keys are: `active` and `resident`. +These values convey the sizes of the internal driver-owned shmem BO's that +aren't exposed to user-space through a DRM handle, like queue ring buffers, +sync object arrays and heap chunks. Because they are all allocated and pinned +at creation time, only `panthor-resident-memory` is necessary to tell us their +size. `panthor-active-memory` shows the size of kernel BO's associated with +VM's and groups currently being scheduled for execution by the GPU.