test_arm_callgraph_fp.sh (1468B)
1#!/bin/sh 2# Check Arm64 callgraphs are complete in fp mode 3# SPDX-License-Identifier: GPL-2.0 4 5lscpu | grep -q "aarch64" || exit 2 6 7if ! [ -x "$(command -v cc)" ]; then 8 echo "failed: no compiler, install gcc" 9 exit 2 10fi 11 12PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 13TEST_PROGRAM_SOURCE=$(mktemp /tmp/test_program.XXXXX.c) 14TEST_PROGRAM=$(mktemp /tmp/test_program.XXXXX) 15 16cleanup_files() 17{ 18 rm -f $PERF_DATA 19 rm -f $TEST_PROGRAM_SOURCE 20 rm -f $TEST_PROGRAM 21} 22 23trap cleanup_files exit term int 24 25cat << EOF > $TEST_PROGRAM_SOURCE 26int a = 0; 27void leaf(void) { 28 for (;;) 29 a += a; 30} 31void parent(void) { 32 leaf(); 33} 34int main(void) { 35 parent(); 36 return 0; 37} 38EOF 39 40echo " + Compiling test program ($TEST_PROGRAM)..." 41 42CFLAGS="-g -O0 -fno-inline -fno-omit-frame-pointer" 43cc $CFLAGS $TEST_PROGRAM_SOURCE -o $TEST_PROGRAM || exit 1 44 45# Add a 1 second delay to skip samples that are not in the leaf() function 46perf record -o $PERF_DATA --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null & 47PID=$! 48 49echo " + Recording (PID=$PID)..." 50sleep 2 51echo " + Stopping perf-record..." 52 53kill $PID 54wait $PID 55 56# expected perf-script output: 57# 58# program 59# 728 leaf 60# 753 parent 61# 76c main 62# ... 63 64perf script -i $PERF_DATA -F comm,ip,sym | head -n4 65perf script -i $PERF_DATA -F comm,ip,sym | head -n4 | \ 66 awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" || 67 sym[1] != "parent" || 68 sym[2] != "main") exit 1 }'