diff options
| author | Adrián Larumbe <adrian.larumbe@collabora.com> | 2024-03-06 04:56:36 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2024-03-11 15:27:10 +0300 |
| commit | b12f3ea7c1884c0c79e516ed9ffee7c7058a61c3 (patch) | |
| tree | 3907219a42d0f7ba3187b5f9fa5e34cbc2afeb5a /Documentation/ABI | |
| parent | 57a4e3a94caee6cfda41700da877bee77eab939c (diff) | |
| download | linux-b12f3ea7c1884c0c79e516ed9ffee7c7058a61c3.tar.xz | |
drm/panfrost: Replace fdinfo's profiling debugfs knob with sysfs
Debugfs isn't always available in production builds that try to squeeze
every single byte out of the kernel image, but we still need a way to
toggle the timestamp and cycle counter registers so that jobs can be
profiled for fdinfo's drm engine and cycle calculations.
Drop the debugfs knob and replace it with a sysfs file that accomplishes
the same functionality, and document its ABI in a separate file.
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240306015819.822128-2-adrian.larumbe@collabora.com
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-panfrost-profiling | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-panfrost-profiling b/Documentation/ABI/testing/sysfs-driver-panfrost-profiling new file mode 100644 index 000000000000..1d8bb0978920 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-panfrost-profiling @@ -0,0 +1,10 @@ +What: /sys/bus/platform/drivers/panfrost/.../profiling +Date: February 2024 +KernelVersion: 6.8.0 +Contact: Adrian Larumbe <adrian.larumbe@collabora.com> +Description: + Get/set drm fdinfo's engine and cycles profiling status. + Valid values are: + 0: Don't enable fdinfo job profiling sources. + 1: Enable fdinfo job profiling sources, this enables both the GPU's + timestamp and cycle counter registers.
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