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perf record: Synthesize features before events in pipe mode 

[ Upstream commit a2015516c5 ]

We need to synthesize events first, because some features works on top
of them (on report side).

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Stephane Eranian <eranian@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180314092205.23291-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiri Olsa 2018-03-14 10:22:04 +01:00 committed by Greg Kroah-Hartman
parent 179c8da7f3
commit 0d9b51366d
1 changed files with 11 additions and 7 deletions
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18
tools/perf/builtin-record.c
View File

@ -800,13 +800,10 @@ static int record__synthesize(struct record *rec, bool tail)
return 0;
if (file->is_pipe) {
err = perf_event__synthesize_features(
tool, session, rec->evlist, process_synthesized_event);
if (err < 0) {
pr_err("Couldn't synthesize features.\n");
return err;
}
/*
* We need to synthesize events first, because some
* features works on top of them (on report side).
*/
err = perf_event__synthesize_attrs(tool, session,
process_synthesized_event);
if (err < 0) {
@ -814,6 +811,13 @@ static int record__synthesize(struct record *rec, bool tail)
goto out;
}
err = perf_event__synthesize_features(tool, session, rec->evlist,
process_synthesized_event);
if (err < 0) {
pr_err("Couldn't synthesize features.\n");
return err;
}
if (have_tracepoints(&rec->evlist->entries)) {
/*
* FIXME err <= 0 here actually means that