Commit-ID:  6f917c70998d22bda6d06cb168665068c6066cd4
Gitweb:     http://git.kernel.org/tip/6f917c70998d22bda6d06cb168665068c6066cd4
Author:     Adrian Hunter <[email protected]>
AuthorDate: Wed, 23 Jul 2014 22:19:57 +0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Wed, 23 Jul 2014 17:00:46 -0300

perf session: Add ability to 'skip' a non-piped event stream

A piped event stream may contain arbitary sized tracepoint information
following a PERF_RECORD_HEADER_TRACING_DATA event.  The position in the
stream has to be 'skipped' to match the start of the next event.

Provide the same ability to a non-piped event stream to allow for
Instruction Trace data that may also be in a non-piped event stream.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: 
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/util/session.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index eac14ce..f4399b2 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1284,6 +1284,7 @@ int __perf_session__process_events(struct perf_session 
*session,
        union perf_event *event;
        uint32_t size;
        struct ui_progress prog;
+       int skip;
 
        perf_tool__fill_defaults(tool);
 
@@ -1344,7 +1345,8 @@ more:
        size = event->header.size;
 
        if (size < sizeof(struct perf_event_header) ||
-           perf_session__process_event(session, event, tool, file_pos) < 0) {
+           (skip = perf_session__process_event(session, event, tool, file_pos))
+                                                                       < 0) {
                pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
                       file_offset + head, event->header.size,
                       event->header.type);
@@ -1352,6 +1354,9 @@ more:
                goto out_err;
        }
 
+       if (skip)
+               size += skip;
+
        head += size;
        file_pos += size;
 
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