Commit b86d9371 authored by Dmitry Safonov's avatar Dmitry Safonov Committed by Steven Rostedt
Browse files

Documentation: ftrace: Module globbing usage 

Link: http://lkml.kernel.org/r/1443545176-3215-5-git-send-email-0x7f454c46@gmail.com



Signed-off-by: default avatarDmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 0b507e1e

Documentation/trace/ftrace.txt

+17 −0
Original line number Diff line number Diff line
@@ -2437,6 +2437,23 @@ The following commands are supported: 


   echo '!writeback*:mod:ext3' >> set_ftrace_filter



  Mod command supports module globbing. Disable tracing for all

  functions except a specific module:



   echo '!*:mod:!ext3' >> set_ftrace_filter



  Disable tracing for all modules, but still trace kernel:



   echo '!*:mod:*' >> set_ftrace_filter



  Enable filter only for kernel:



   echo '*write*:mod:!*' >> set_ftrace_filter



  Enable filter for module globbing:



   echo '*write*:mod:*snd*' >> set_ftrace_filter



- traceon/traceoff

  These commands turn tracing on and off when the specified

  functions are hit. The parameter determines how many times the

CRA Git | Maintained and supported by SUSTech CRA and CCSE