[PATCH 06/13] perf record: Store data mmaps for dwarf unwind

From: Jiri Olsa
Date: Thu Jan 07 2016 - 04:14:37 EST


Currently we don't synthesize data mmap by default. It depends
on -d option, that enables data address sampling.

But we've seen cases (softice) where DWARF unwinder went through
non executable mmaps, which we need to lookup in MAP__VARIABLE tree.

Making data mmaps to be synthesized for dwarf unwind as well.

Reported-by: Noel Grandin <noelgrandin@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-lh02yir6qfycn8zr892rmlgg@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/builtin-record.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 9c5cdc2c4471..920b93edb497 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -804,6 +804,7 @@ int record_parse_callchain_opt(const struct option *opt,
int ret;
struct record_opts *record = (struct record_opts *)opt->value;

+ record->sample_address = true;
record->callgraph_set = true;
callchain_param.enabled = !unset;

--
2.4.3

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