| #!/bin/sh |
| # Check Arm64 callgraphs are complete in fp mode |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| shelldir=$(dirname "$0") |
| # shellcheck source=lib/perf_has_symbol.sh |
| . "${shelldir}"/lib/perf_has_symbol.sh |
| |
| lscpu | grep -q "aarch64" || exit 2 |
| |
| if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF |
| then |
| echo "Skipping, no dwarf unwind support" |
| exit 2 |
| fi |
| |
| skip_test_missing_symbol leafloop |
| |
| PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX) |
| TEST_PROGRAM="perf test -w leafloop" |
| |
| cleanup_files() |
| { |
| rm -f "$PERF_DATA" |
| } |
| |
| trap cleanup_files EXIT TERM INT |
| |
| # Add a 1 second delay to skip samples that are not in the leaf() function |
| # shellcheck disable=SC2086 |
| perf record -o "$PERF_DATA" --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null & |
| PID=$! |
| |
| echo " + Recording (PID=$PID)..." |
| sleep 2 |
| echo " + Stopping perf-record..." |
| |
| kill $PID |
| wait $PID |
| |
| # expected perf-script output: |
| # |
| # program |
| # 728 leaf |
| # 753 parent |
| # 76c leafloop |
| # ... |
| |
| perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 |
| perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 | \ |
| awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" || |
| sym[1] != "parent" || |
| sym[2] != "leafloop") exit 1 }' |
