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1 | # Copyright (c) 2013 The Chromium OS Authors. |
2 | # | |
1a459660 | 3 | # SPDX-License-Identifier: GPL-2.0+ |
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4 | # |
5 | ||
6 | # Simple test script for tracing with sandbox | |
7 | ||
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8 | TRACE_OPT="FTRACE=1" |
9 | ||
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10 | BASE="$(dirname $0)/.." |
11 | . $BASE/common.sh | |
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12 | |
13 | run_trace() { | |
14 | echo "Run trace" | |
15 | ./${OUTPUT_DIR}/u-boot <<END | |
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16 | trace stats |
17 | hash sha256 0 10000 | |
18 | trace pause | |
19 | trace stats | |
20 | hash sha256 0 10000 | |
21 | trace stats | |
22 | trace resume | |
23 | hash sha256 0 10000 | |
24 | trace pause | |
25 | trace stats | |
26 | reset | |
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27 | END |
28 | } | |
29 | ||
30 | check_results() { | |
31 | echo "Check results" | |
32 | ||
33 | # Expect sha256 to run 3 times, so we see the string 6 times | |
34 | if [ $(grep -c sha256 ${tmp}) -ne 6 ]; then | |
35 | fail "sha256 error" | |
36 | fi | |
37 | ||
38 | # 4 sets of results (output of 'trace stats') | |
39 | if [ $(grep -c "traced function calls" ${tmp}) -ne 4 ]; then | |
40 | fail "trace output error" | |
41 | fi | |
42 | ||
43 | # Check trace counts. We expect to see an increase in the number of | |
44 | # traced function calls between each 'trace stats' command, except | |
45 | # between calls 2 and 3, where tracing is paused. | |
46 | # This code gets the sign of the difference between each number and | |
47 | # its predecessor. | |
48 | counts="$(tr -d , <${tmp} | awk '/traced function calls/ { diff = $1 - upto; upto = $1; printf "%d ", diff < 0 ? -1 : (diff > 0 ? 1 : 0)}')" | |
49 | ||
50 | if [ "${counts}" != "1 1 0 1 " ]; then | |
51 | fail "trace collection error: ${counts}" | |
52 | fi | |
53 | } | |
54 | ||
55 | echo "Simple trace test / sanity check using sandbox" | |
56 | echo | |
57 | tmp="$(tempfile)" | |
129acd4c | 58 | build_uboot "${TRACE_OPT}" |
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59 | run_trace >${tmp} |
60 | check_results ${tmp} | |
61 | rm ${tmp} | |
62 | echo "Test passed" |