diff options
| author | Adrián Larumbe <adrian.larumbe@collabora.com> | 2025-01-30 17:28:12 +0000 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2025-02-07 15:23:39 +0100 |
| commit | f780ef56f72912e39bdf0596e13c01d8e450dcc9 (patch) | |
| tree | 371fd9a5c10d88df1797e460182189fdd046c61a /Documentation/gpu | |
| parent | 434e5ca5b5d7ea415670d4fcb399d90d355a1e38 (diff) | |
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 <mihail.atanassov@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250130172851.941597-5-adrian.larumbe@collabora.com
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/panthor.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/gpu/panthor.rst b/Documentation/gpu/panthor.rst index 3f8979fa2b86..7a841741278f 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. |