Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit df3ab708 authored by Motohiro KOSAKI's avatar Motohiro KOSAKI Committed by Ingo Molnar
Browse files

kprobetrace, doc: Add the explanation to remove probe points 



Latest kprobetrace can remove probe points selectively, thus
the documentation should be updated too.

Signed-off-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: default avatarMasami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20100119023512.31880.35535.stgit@localhost6.localdomain6>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 580d9e00

Documentation/trace/kprobetrace.txt

+7 −0
Original line number Original line Diff line number Diff line
@@ -24,6 +24,7 @@ Synopsis of kprobe_events 
-------------------------

-------------------------

  p[:[GRP/]EVENT] SYMBOL[+offs]|MEMADDR [FETCHARGS]	: Set a probe

  p[:[GRP/]EVENT] SYMBOL[+offs]|MEMADDR [FETCHARGS]	: Set a probe

  r[:[GRP/]EVENT] SYMBOL[+0] [FETCHARGS]		: Set a return probe

  r[:[GRP/]EVENT] SYMBOL[+0] [FETCHARGS]		: Set a return probe

  -:[GRP/]EVENT						: Clear a probe





 GRP		: Group name. If omitted, use "kprobes" for it.

 GRP		: Group name. If omitted, use "kprobes" for it.

 EVENT		: Event name. If omitted, the event name is generated

 EVENT		: Event name. If omitted, the event name is generated
@@ -122,6 +123,12 @@ REC->dfd, REC->filename, REC->flags, REC->mode 




 This clears all probe points.

 This clears all probe points.





 Or,



  echo -:myprobe >> kprobe_events



 This clears probe points selectively.



 Right after definition, each event is disabled by default. For tracing these

 Right after definition, each event is disabled by default. For tracing these

events, you need to enable it.

events, you need to enable it.