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perf header: Add HEADER_GROUP_DESC feature

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Save group relationship information so that it can be restored when perf
report is running.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1358845787-1350-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2013-01-22 18:09:31 +09:00
committed by Arnaldo Carvalho de Melo
parent 8d7d8474d7
commit a8bb559bd4
3 changed files with 169 additions and 0 deletions
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3
tools/perf/builtin-record.c
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@@ -486,6 +486,9 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
goto out_delete_session;
}
if (!evsel_list->nr_groups)
perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
/*
* perf_session__delete(session) will be called at perf_record__exit()
*/