Messages in this thread Patch in this message | | | Date | Mon, 28 Jul 2014 01:24:40 -0700 | From | tip-bot for Adrian Hunter <> | Subject | [tip:perf/core] perf session: Add ability to 'skip' a non-piped event stream |
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Commit-ID: 6f917c70998d22bda6d06cb168665068c6066cd4 Gitweb: http://git.kernel.org/tip/6f917c70998d22bda6d06cb168665068c6066cd4 Author: Adrian Hunter <adrian.hunter@intel.com> AuthorDate: Wed, 23 Jul 2014 22:19:57 +0300 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> 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 <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1406143198-20732-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- 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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