perf tools: Fix buildid processing

After recording, 'perf record' post-processes the data to determine
which buildids are needed.

That processing must process the data in time order, if possible,
because otherwise dependent events, like forks and mmaps, will not make
sense.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1439994561-27436-4-git-send-email-adrian.hunter@intel.com
[ Moved the sample_id_add to after trying to open the events, use pr_warning ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index de165a1b92402ac7a6267bd0a0c5aa30a0053c92..20b56eb987f89f21fe20e53decf8ee1fbe275a2e 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -521,6 +521,15 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                goto out_child;
        }
 
+       /*
+        * Normally perf_session__new would do this, but it doesn't have the
+        * evlist.
+        */
+       if (rec->tool.ordered_events && !perf_evlist__sample_id_all(rec->evlist)) {
+               pr_warning("WARNING: No sample_id_all support, falling back to unordered processing\n");
+               rec->tool.ordered_events = false;
+       }
+
        if (!rec->evlist->nr_groups)
                perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
 
@@ -965,9 +974,11 @@ static struct record record = {
        .tool = {
                .sample         = process_sample_event,
                .fork           = perf_event__process_fork,
+               .exit           = perf_event__process_exit,
                .comm           = perf_event__process_comm,
                .mmap           = perf_event__process_mmap,
                .mmap2          = perf_event__process_mmap2,
+               .ordered_events = true,
        },
 };