Commit 951e0d00 authored by Zhaoyu Liu's avatar Zhaoyu Liu Committed by Jonathan Corbet
Browse files

docs: ftrace: fix the wrong path of tracefs 



Delete "tracing" due to it has been included in /proc/mounts.
Delete "echo nop > $tracefs/tracing/current_tracer", maybe
this command is redundant.

Signed-off-by: default avatarZhaoyu Liu <zackary.liu.pro@gmail.com>
Acked-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 738943fa

Documentation/trace/ftrace.rst

+4 −5
Original line number Diff line number Diff line
@@ -2442,11 +2442,10 @@ Or this simple script! 
  #!/bin/bash



  tracefs=`sed -ne 's/^tracefs \(.*\) tracefs.*/\1/p' /proc/mounts`

  echo nop > $tracefs/tracing/current_tracer

  echo 0 > $tracefs/tracing/tracing_on

  echo $$ > $tracefs/tracing/set_ftrace_pid

  echo function > $tracefs/tracing/current_tracer

  echo 1 > $tracefs/tracing/tracing_on

  echo 0 > $tracefs/tracing_on

  echo $$ > $tracefs/set_ftrace_pid

  echo function > $tracefs/current_tracer

  echo 1 > $tracefs/tracing_on

  exec "$@"