1# Copyright (c) 2013 The Chromium OS Authors. 2# 3# This program is free software; you can redistribute it and/or 4# modify it under the terms of the GNU General Public License as 5# published by the Free Software Foundation; either version 2 of 6# the License, or (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program; if not, write to the Free Software 15# Foundation, Inc., 59 Temple Place, Suite 330, Boston, 16# MA 02111-1307 USA 17# 18 19# Simple test script for tracing with sandbox 20 21OUTPUT_DIR=sandbox 22TRACE_OPT="FTRACE=1" 23 24fail() { 25 echo "Test failed: $1" 26 if [ -n ${tmp} ]; then 27 rm ${tmp} 28 fi 29 exit 1 30} 31 32build_uboot() { 33 echo "Build sandbox" 34 OPTS="O=${OUTPUT_DIR} ${TRACE_OPT}" 35 NUM_CPUS=$(grep -c processor /proc/cpuinfo) 36 make ${OPTS} sandbox_config 37 make ${OPTS} -s -j${NUM_CPUS} 38} 39 40run_trace() { 41 echo "Run trace" 42 ./${OUTPUT_DIR}/u-boot <<END 43 trace stats 44 hash sha256 0 10000 45 trace pause 46 trace stats 47 hash sha256 0 10000 48 trace stats 49 trace resume 50 hash sha256 0 10000 51 trace pause 52 trace stats 53 reset 54END 55} 56 57check_results() { 58 echo "Check results" 59 60 # Expect sha256 to run 3 times, so we see the string 6 times 61 if [ $(grep -c sha256 ${tmp}) -ne 6 ]; then 62 fail "sha256 error" 63 fi 64 65 # 4 sets of results (output of 'trace stats') 66 if [ $(grep -c "traced function calls" ${tmp}) -ne 4 ]; then 67 fail "trace output error" 68 fi 69 70 # Check trace counts. We expect to see an increase in the number of 71 # traced function calls between each 'trace stats' command, except 72 # between calls 2 and 3, where tracing is paused. 73 # This code gets the sign of the difference between each number and 74 # its predecessor. 75 counts="$(tr -d , <${tmp} | awk '/traced function calls/ { diff = $1 - upto; upto = $1; printf "%d ", diff < 0 ? -1 : (diff > 0 ? 1 : 0)}')" 76 77 if [ "${counts}" != "1 1 0 1 " ]; then 78 fail "trace collection error: ${counts}" 79 fi 80} 81 82echo "Simple trace test / sanity check using sandbox" 83echo 84tmp="$(tempfile)" 85build_uboot 86run_trace >${tmp} 87check_results ${tmp} 88rm ${tmp} 89echo "Test passed" 90