lkml.org 
[lkml]   [2015]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 21/25] tools lib traceevent: Add way to find sub buffer boundary
    Date
    From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>

    For debugging purposes, it may be helpful for the kbuffer library to flag
    when crossing a sub buffer.

    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Link: http://lkml.kernel.org/r/20150324135923.650983637@goodmis.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/lib/traceevent/kbuffer-parse.c | 11 +++++++++++
    tools/lib/traceevent/kbuffer.h | 1 +
    2 files changed, 12 insertions(+)

    diff --git a/tools/lib/traceevent/kbuffer-parse.c b/tools/lib/traceevent/kbuffer-parse.c
    index deb3569ab004..3bcada3ae05a 100644
    --- a/tools/lib/traceevent/kbuffer-parse.c
    +++ b/tools/lib/traceevent/kbuffer-parse.c
    @@ -729,3 +729,14 @@ void kbuffer_set_old_format(struct kbuffer *kbuf)

    kbuf->next_event = __old_next_event;
    }
    +
    +/**
    + * kbuffer_start_of_data - return offset of where data starts on subbuffer
    + * @kbuf: The kbuffer
    + *
    + * Returns the location on the subbuffer where the data starts.
    + */
    +int kbuffer_start_of_data(struct kbuffer *kbuf)
    +{
    + return kbuf->start;
    +}
    diff --git a/tools/lib/traceevent/kbuffer.h b/tools/lib/traceevent/kbuffer.h
    index c831f64b17a0..03dce757553f 100644
    --- a/tools/lib/traceevent/kbuffer.h
    +++ b/tools/lib/traceevent/kbuffer.h
    @@ -63,5 +63,6 @@ int kbuffer_missed_events(struct kbuffer *kbuf);
    int kbuffer_subbuffer_size(struct kbuffer *kbuf);

    void kbuffer_set_old_format(struct kbuffer *kbuf);
    +int kbuffer_start_of_data(struct kbuffer *kbuf);

    #endif /* _K_BUFFER_H */
    --
    1.9.3


    \
     
     \ /
      Last update: 2015-03-24 17:41    [W:4.111 / U:0.520 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site