diff options
| author | Ross Zwisler <zwisler@google.com> | 2023-08-29 14:46:01 -0600 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-10-07 10:55:45 +0200 |
| commit | 85b901e6003b54f1377f63e9444466972c0707a7 (patch) | |
| tree | a8a5f60a51b07677d23f336f5b44f8b789148f7a /Documentation/admin-guide | |
| parent | 1fd6eb12642e0c32692924ff359c07de4b781d78 (diff) | |
media: visl: use canonical ftrace path
The canonical location for the tracefs filesystem is at
/sys/kernel/tracing.
But, from Documentation/trace/ftrace.rst:
Before 4.1, all ftrace tracing control files were within the debugfs
file system, which is typically located at /sys/kernel/debug/tracing.
For backward compatibility, when mounting the debugfs file system,
the tracefs file system will be automatically mounted at:
/sys/kernel/debug/tracing
Update the visl decoder driver documentation to use this tracefs path.
Signed-off-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/media/visl.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/admin-guide/media/visl.rst b/Documentation/admin-guide/media/visl.rst index 7d2dc78341c9..4328c6c72d30 100644 --- a/Documentation/admin-guide/media/visl.rst +++ b/Documentation/admin-guide/media/visl.rst @@ -78,7 +78,7 @@ The trace events are defined on a per-codec basis, e.g.: .. code-block:: bash - $ ls /sys/kernel/debug/tracing/events/ | grep visl + $ ls /sys/kernel/tracing/events/ | grep visl visl_fwht_controls visl_h264_controls visl_hevc_controls @@ -90,13 +90,13 @@ For example, in order to dump HEVC SPS data: .. code-block:: bash - $ echo 1 > /sys/kernel/debug/tracing/events/visl_hevc_controls/v4l2_ctrl_hevc_sps/enable + $ echo 1 > /sys/kernel/tracing/events/visl_hevc_controls/v4l2_ctrl_hevc_sps/enable The SPS data will be dumped to the trace buffer, i.e.: .. code-block:: bash - $ cat /sys/kernel/debug/tracing/trace + $ cat /sys/kernel/tracing/trace video_parameter_set_id 0 seq_parameter_set_id 0 pic_width_in_luma_samples 1920 |