On 03/10/2023 23:41, Steven Rostedt wrote: > > Could this go through the linux-media tree, or if you give it an Ack, I'll > take it through the tracing tree. I prefer to take this through the media subsystem. Ross, can you post this patch again, this time including linux-media@xxxxxxxxxxxxxxx? The patch looks fine, so I'll pick it up. Regards, Hans > > -- Steve > > > 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> >> --- >> 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 >
