projects/linux·blob master · refs

48 lines · 1.2 KiB

1#!/bin/bash
2# Check Arm64 callgraphs are complete in fp mode
3# SPDX-License-Identifier: GPL-2.0
4
5shelldir=$(dirname "$0")
6# shellcheck source=lib/perf_has_symbol.sh
7. "${shelldir}"/lib/perf_has_symbol.sh
8
9if [ "$(uname -m)" != "aarch64" ]; then
10 exit 2
11fi
12
13if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
14then
15 echo "Skipping, no dwarf unwind support"
16 exit 2
17fi
18
19skip_test_missing_symbol leafloop
20
21PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
22TEST_PROGRAM="perf test -w leafloop"
23
24cleanup_files()
25{
26 rm -f "$PERF_DATA"
27}
28
29trap cleanup_files EXIT TERM INT
30
31# shellcheck disable=SC2086
32perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM
33
34# Try opening the file so any immediate errors are visible in the log
35perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
36
37# expected perf-script output if 'leaf' has been inserted correctly:
38#
39# perf
40# 728 leaf
41# 753 parent
42# 76c leafloop
43# ... remaining stack to main() ...
44
45# Each frame is separated by a tab, some spaces and an address
46SEP="[[:space:]]+ [[:xdigit:]]+"
47perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \
48 grep -E -q "perf $SEP leaf $SEP parent $SEP leafloop"