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authorRoss Zwisler <zwisler@chromium.org>2023-01-25 14:32:51 -0700
committerJonathan Corbet <corbet@lwn.net>2023-01-31 14:02:30 -0700
commit2abfcd293b79baf62895894fa3ea2386ffbe6338 (patch)
treeb74867f24b7c6d6b6909856063d6c184a29195e0 /Documentation/sound
parentb05ada5615f844c3fdcf5e2a0fa35a4bc1a394f2 (diff)
docs: ftrace: always 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 Many parts of Documentation still reference this older debugfs path, so let's update them to avoid confusion. Signed-off-by: Ross Zwisler <zwisler@google.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20230125213251.2013791-1-zwisler@google.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/sound')
-rw-r--r--Documentation/sound/hd-audio/notes.rst6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/sound/hd-audio/notes.rst b/Documentation/sound/hd-audio/notes.rst
index d118b6fe269b..4c414a63de3a 100644
--- a/Documentation/sound/hd-audio/notes.rst
+++ b/Documentation/sound/hd-audio/notes.rst
@@ -651,14 +651,14 @@ via power-saving behavior.
Enabling all tracepoints can be done like
::
- # echo 1 > /sys/kernel/debug/tracing/events/hda/enable
+ # echo 1 > /sys/kernel/tracing/events/hda/enable
then after some commands, you can traces from
-/sys/kernel/debug/tracing/trace file. For example, when you want to
+/sys/kernel/tracing/trace file. For example, when you want to
trace what codec command is sent, enable the tracepoint like:
::
- # cat /sys/kernel/debug/tracing/trace
+ # cat /sys/kernel/tracing/trace
# tracer: nop
#
# TASK-PID CPU# TIMESTAMP FUNCTION