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    Subject[PATCH -tip 2/2] kprobetrace, doc: Add the explanation to remove probe points
    Date
    From: Motohiro KOSAKI <kosaki.motohiro@jp.fujitsu.com>

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

    Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
    ---

    Documentation/trace/kprobetrace.txt | 7 +++++++
    1 files changed, 7 insertions(+), 0 deletions(-)

    diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt
    index ab57f02..a9100b2 100644
    --- a/Documentation/trace/kprobetrace.txt
    +++ b/Documentation/trace/kprobetrace.txt
    @@ -24,6 +24,7 @@ Synopsis of kprobe_events
    -------------------------
    p[:[GRP/]EVENT] SYMBOL[+offs]|MEMADDR [FETCHARGS] : Set a 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.
    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.

    + Or,
    +
    + echo -:myprobe >> kprobe_events
    +
    + This clears probe points selectively.
    +
    Right after definition, each event is disabled by default. For tracing these
    events, you need to enable it.



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