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perf record: Store data mmaps for dwarf unwind
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@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160107133022.GA32115@krava.brq.redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -815,8 +815,12 @@ int record_parse_callchain_opt(const struct option *opt,
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}
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ret = parse_callchain_record_opt(arg, &callchain_param);
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if (!ret)
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if (!ret) {
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/* Enable data address sampling for DWARF unwind. */
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if (callchain_param.record_mode == CALLCHAIN_DWARF)
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record->sample_address = true;
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callchain_debug();
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}
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return ret;
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}
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