From 82ac952be6348dc072dcfd80a2dcb511d0cd6bea Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 24 Mar 2015 09:57:56 -0400 Subject: [PATCH] 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 Cc: Andrew Morton Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/20150324135923.650983637@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo --- 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 */ -- 2.20.1