Messages in this thread Patch in this message | | | From | Alexandre Truong <> | Subject | [PATCH v2 3/4] perf tools: enable dwarf_callchain_users on aarch64 | Date | Wed, 10 Feb 2021 13:22:12 +0000 |
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On arm64, enable dwarf_callchain_users which will be needed to do a dwarf unwind in order to get the caller of the leaf frame.
Signed-off-by: Alexandre Truong <alexandre.truong@arm.com> --- tools/perf/builtin-report.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 2a845d6cac09..93661a3eaeb1 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -405,6 +405,10 @@ static int report__setup_sample_type(struct report *rep) callchain_param_setup(sample_type); + if (callchain_param.record_mode == CALLCHAIN_FP && + strncmp(rep->session->header.env.arch, "aarch64", 7) == 0) + dwarf_callchain_users = true; + if (rep->stitch_lbr && (callchain_param.record_mode != CALLCHAIN_LBR)) { ui__warning("Can't find LBR callchain. Switch off --stitch-lbr.\n" "Please apply --call-graph lbr when recording.\n"); -- 2.23.0
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