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drm/panthor: add sysfs knob for enabling job profiling

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This commit introduces a DRM device sysfs attribute that lets UM control
the job accounting status in the device. The knob variable had been brought
in as part of a previous commit, but now we're able to fix it manually.

As sysfs files are part of a driver's uAPI, describe its legitimate input
values and output format in a documentation file.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240923230912.2207320-6-adrian.larumbe@collabora.com
This commit is contained in:
Adrián Larumbe
2024-09-24 00:06:25 +01:00
committed by Boris Brezillon
parent 064bb57479
commit 6a797bdfde
3 changed files with 95 additions and 0 deletions
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10
Documentation/ABI/testing/sysfs-driver-panthor-profiling Normal file
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@@ -0,0 +1,10 @@
What: /sys/bus/platform/drivers/panthor/.../profiling
Date: September 2024
KernelVersion: 6.11.0
Contact: Adrian Larumbe <adrian.larumbe@collabora.com>
Description:
Bitmask to enable drm fdinfo's job profiling measurements.
Valid values are:
0: Don't enable fdinfo job profiling sources.
1: Enable GPU cycle measurements for running jobs.
2: Enable GPU timestamp sampling for running jobs.