[PATCH v3 7/7] perf test: Test addr2line unwinding works with inline functions

[Ian Rogers <irogers@google.com>]

Add a test that seeks to see inline functions correctly displayed in
perf script from the inlineloop workload.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/tests/shell/addr2line_inlines.sh | 47 +++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100755 tools/perf/tests/shell/addr2line_inlines.sh

diff --git a/tools/perf/tests/shell/addr2line_inlines.sh b/tools/perf/tests/shell/addr2line_inlines.sh
new file mode 100755
index 000000000000..4a5b6f5be23d
--- /dev/null
+++ b/tools/perf/tests/shell/addr2line_inlines.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# test addr2line inline unwinding
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+test_dir=$(mktemp -d /tmp/perf-test-inline-addr2line.XXXXXXXXXX)
+perf_data="${test_dir}/perf.data"
+perf_script_txt="${test_dir}/perf_script.txt"
+
+cleanup() {
+    rm -rf "${test_dir}"
+    trap - EXIT TERM INT
+}
+
+trap_cleanup() {
+    echo "Unexpected signal in ${FUNCNAME[1]}"
+    cleanup
+    exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+test_inlinedloop() {
+    echo "Inline unwinding verification test"
+    # Record data. Currently only dwarf callchains support inlined functions.
+    perf record --call-graph dwarf -e task-clock:u -o "${perf_data}" -- perf test -w inlineloop 1
+
+    # Check output with inline (default) and srcline
+    perf script -i "${perf_data}" --fields +srcline > "${perf_script_txt}"
+
+    # Expect the leaf and middle functions to occur on lines in the 20s, with
+    # the non-inlined parent function on a line in the 30s.
+    if grep -q "inlineloop.c:2. (inlined)" "${perf_script_txt}" &&
+       grep -q "inlineloop.c:3.$" "${perf_script_txt}"
+    then
+        echo "Inline unwinding verification test [Success]"
+    else
+        echo "Inline unwinding verification test [Failed missing inlined functions]"
+        err=1
+    fi
+}
+
+test_inlinedloop
+
+cleanup
+exit $err
-- 
2.52.0.457.g6b5491de43-goog