On Tue, 29 Aug 2023 14:46:01 -0600 Ross Zwisler <zwisler@xxxxxxxxxx> wrote: > From: Ross Zwisler <zwisler@xxxxxxxxxx> > > 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@xxxxxxxxxx> Looks good to me. Reviewed-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> Thanks! > --- > Documentation/admin-guide/media/visl.rst | 6 +++--- > 1 file 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 > -- > 2.42.0.rc2.253.gd59a3bf2b4-goog > -- Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
