1# Copyright (c) 2013 The Chromium OS Authors. 2# 3# SPDX-License-Identifier: GPL-2.0+ 4# 5 6# Simple test script for tracing with sandbox 7 8OUTPUT_DIR=sandbox 9TRACE_OPT="FTRACE=1" 10 11fail() { 12 echo "Test failed: $1" 13 if [ -n ${tmp} ]; then 14 rm ${tmp} 15 fi 16 exit 1 17} 18 19build_uboot() { 20 echo "Build sandbox" 21 OPTS="O=${OUTPUT_DIR} ${TRACE_OPT}" 22 NUM_CPUS=$(grep -c processor /proc/cpuinfo) 23 make ${OPTS} sandbox_config 24 make ${OPTS} -s -j${NUM_CPUS} 25} 26 27run_trace() { 28 echo "Run trace" 29 ./${OUTPUT_DIR}/u-boot <<END 30 trace stats 31 hash sha256 0 10000 32 trace pause 33 trace stats 34 hash sha256 0 10000 35 trace stats 36 trace resume 37 hash sha256 0 10000 38 trace pause 39 trace stats 40 reset 41END 42} 43 44check_results() { 45 echo "Check results" 46 47 # Expect sha256 to run 3 times, so we see the string 6 times 48 if [ $(grep -c sha256 ${tmp}) -ne 6 ]; then 49 fail "sha256 error" 50 fi 51 52 # 4 sets of results (output of 'trace stats') 53 if [ $(grep -c "traced function calls" ${tmp}) -ne 4 ]; then 54 fail "trace output error" 55 fi 56 57 # Check trace counts. We expect to see an increase in the number of 58 # traced function calls between each 'trace stats' command, except 59 # between calls 2 and 3, where tracing is paused. 60 # This code gets the sign of the difference between each number and 61 # its predecessor. 62 counts="$(tr -d , <${tmp} | awk '/traced function calls/ { diff = $1 - upto; upto = $1; printf "%d ", diff < 0 ? -1 : (diff > 0 ? 1 : 0)}')" 63 64 if [ "${counts}" != "1 1 0 1 " ]; then 65 fail "trace collection error: ${counts}" 66 fi 67} 68 69echo "Simple trace test / sanity check using sandbox" 70echo 71tmp="$(tempfile)" 72build_uboot 73run_trace >${tmp} 74check_results ${tmp} 75rm ${tmp} 76echo "Test passed" 77