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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-03-24 09:57:56 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-03-24 12:22:09 -0300 |
| commit | 82ac952be6348dc072dcfd80a2dcb511d0cd6bea (patch) | |
| tree | 2e4b5869b8641cda588f06f7c4c0634cb894be0e /tools/lib | |
| parent | c5e691928bf166ac03430e957038b60adba3cf6c (diff) | |
| download | linux-82ac952be6348dc072dcfd80a2dcb511d0cd6bea.tar.gz linux-82ac952be6348dc072dcfd80a2dcb511d0cd6bea.tar.bz2 linux-82ac952be6348dc072dcfd80a2dcb511d0cd6bea.zip | |
tools lib traceevent: Add way to find sub buffer boundary
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>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/traceevent/kbuffer-parse.c | 11 | ||||
| -rw-r--r-- | tools/lib/traceevent/kbuffer.h | 1 |
2 files changed, 12 insertions, 0 deletions
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 */ |