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