# Copyright (c) 2013 The Chromium OS Authors. # # SPDX-License-Identifier: GPL-2.0+ # # Simple test script for tracing with sandbox OUTPUT_DIR=sandbox TRACE_OPT="FTRACE=1" fail() { echo "Test failed: $1" if [ -n ${tmp} ]; then rm ${tmp} fi exit 1 } build_uboot() { echo "Build sandbox" OPTS="O=${OUTPUT_DIR} ${TRACE_OPT}" NUM_CPUS=$(grep -c processor /proc/cpuinfo) make ${OPTS} sandbox_config make ${OPTS} -s -j${NUM_CPUS} } run_trace() { echo "Run trace" ./${OUTPUT_DIR}/u-boot <<END trace stats hash sha256 0 10000 trace pause trace stats hash sha256 0 10000 trace stats trace resume hash sha256 0 10000 trace pause trace stats reset END } check_results() { echo "Check results" # Expect sha256 to run 3 times, so we see the string 6 times if [ $(grep -c sha256 ${tmp}) -ne 6 ]; then fail "sha256 error" fi # 4 sets of results (output of 'trace stats') if [ $(grep -c "traced function calls" ${tmp}) -ne 4 ]; then fail "trace output error" fi # Check trace counts. We expect to see an increase in the number of # traced function calls between each 'trace stats' command, except # between calls 2 and 3, where tracing is paused. # This code gets the sign of the difference between each number and # its predecessor. counts="$(tr -d , <${tmp} | awk '/traced function calls/ { diff = $1 - upto; upto = $1; printf "%d ", diff < 0 ? -1 : (diff > 0 ? 1 : 0)}')" if [ "${counts}" != "1 1 0 1 " ]; then fail "trace collection error: ${counts}" fi } echo "Simple trace test / sanity check using sandbox" echo tmp="$(tempfile)" build_uboot run_trace >${tmp} check_results ${tmp} rm ${tmp} echo "Test passed"