tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0-only
3
4# ftracetest - Ftrace test shell scripts
5#
6# Copyright (C) Hitachi Ltd., 2014
7# Written by Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
8#
9
10usage() { # errno [message]
11[ ! -z "$2" ] && echo $2
12echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
13echo " Options:"
14echo " -h|--help Show help message"
15echo " -k|--keep Keep passed test logs"
16echo " -v|--verbose Increase verbosity of test messages"
17echo " -vv Alias of -v -v (Show all results in stdout)"
18echo " -vvv Alias of -v -v -v (Show all commands immediately)"
19echo " --fail-unsupported Treat UNSUPPORTED as a failure"
20echo " --fail-unresolved Treat UNRESOLVED as a failure"
21echo " -d|--debug Debug mode (trace all shell commands)"
22echo " -l|--logdir <dir> Save logs on the <dir>"
23echo " If <dir> is -, all logs output in console only"
24exit $1
25}
26
27# default error
28err_ret=1
29
30# kselftest skip code is 4
31err_skip=4
32
33# cgroup RT scheduling prevents chrt commands from succeeding, which
34# induces failures in test wakeup tests. Disable for the duration of
35# the tests.
36
37readonly sched_rt_runtime=/proc/sys/kernel/sched_rt_runtime_us
38
39sched_rt_runtime_orig=$(cat $sched_rt_runtime)
40
41setup() {
42 echo -1 > $sched_rt_runtime
43}
44
45cleanup() {
46 echo $sched_rt_runtime_orig > $sched_rt_runtime
47}
48
49errexit() { # message
50 echo "Error: $1" 1>&2
51 cleanup
52 exit $err_ret
53}
54
55# Ensuring user privilege
56if [ `id -u` -ne 0 ]; then
57 errexit "this must be run by root user"
58fi
59
60setup
61
62# Utilities
63absdir() { # file_path
64 (cd `dirname $1`; pwd)
65}
66
67abspath() {
68 echo `absdir $1`/`basename $1`
69}
70
71find_testcases() { #directory
72 echo `find $1 -name \*.tc | sort`
73}
74
75parse_opts() { # opts
76 local OPT_TEST_CASES=
77 local OPT_TEST_DIR=
78
79 while [ ! -z "$1" ]; do
80 case "$1" in
81 --help|-h)
82 usage 0
83 ;;
84 --keep|-k)
85 KEEP_LOG=1
86 shift 1
87 ;;
88 --verbose|-v|-vv|-vvv)
89 if [ $VERBOSE -eq -1 ]; then
90 usage "--console can not use with --verbose"
91 fi
92 VERBOSE=$((VERBOSE + 1))
93 [ $1 = '-vv' ] && VERBOSE=$((VERBOSE + 1))
94 [ $1 = '-vvv' ] && VERBOSE=$((VERBOSE + 2))
95 shift 1
96 ;;
97 --console)
98 if [ $VERBOSE -ne 0 ]; then
99 usage "--console can not use with --verbose"
100 fi
101 VERBOSE=-1
102 shift 1
103 ;;
104 --debug|-d)
105 DEBUG=1
106 shift 1
107 ;;
108 --stop-fail)
109 STOP_FAILURE=1
110 shift 1
111 ;;
112 --fail-unsupported)
113 UNSUPPORTED_RESULT=1
114 shift 1
115 ;;
116 --fail-unresolved)
117 UNRESOLVED_RESULT=1
118 shift 1
119 ;;
120 --logdir|-l)
121 LOG_DIR=$2
122 shift 2
123 ;;
124 *.tc)
125 if [ -f "$1" ]; then
126 OPT_TEST_CASES="$OPT_TEST_CASES `abspath $1`"
127 shift 1
128 else
129 usage 1 "$1 is not a testcase"
130 fi
131 ;;
132 *)
133 if [ -d "$1" ]; then
134 OPT_TEST_DIR=`abspath $1`
135 OPT_TEST_CASES="$OPT_TEST_CASES `find_testcases $OPT_TEST_DIR`"
136 shift 1
137 else
138 usage 1 "Invalid option ($1)"
139 fi
140 ;;
141 esac
142 done
143 if [ ! -z "$OPT_TEST_CASES" ]; then
144 TEST_CASES=$OPT_TEST_CASES
145 fi
146}
147
148# Parameters
149TRACING_DIR=`grep tracefs /proc/mounts | cut -f2 -d' ' | head -1`
150if [ -z "$TRACING_DIR" ]; then
151 DEBUGFS_DIR=`grep debugfs /proc/mounts | cut -f2 -d' ' | head -1`
152 if [ -z "$DEBUGFS_DIR" ]; then
153 # If tracefs exists, then so does /sys/kernel/tracing
154 if [ -d "/sys/kernel/tracing" ]; then
155 mount -t tracefs nodev /sys/kernel/tracing ||
156 errexit "Failed to mount /sys/kernel/tracing"
157 TRACING_DIR="/sys/kernel/tracing"
158 # If debugfs exists, then so does /sys/kernel/debug
159 elif [ -d "/sys/kernel/debug" ]; then
160 mount -t debugfs nodev /sys/kernel/debug ||
161 errexit "Failed to mount /sys/kernel/debug"
162 TRACING_DIR="/sys/kernel/debug/tracing"
163 else
164 err_ret=$err_skip
165 errexit "debugfs and tracefs are not configured in this kernel"
166 fi
167 else
168 TRACING_DIR="$DEBUGFS_DIR/tracing"
169 fi
170fi
171if [ ! -d "$TRACING_DIR" ]; then
172 err_ret=$err_skip
173 errexit "ftrace is not configured in this kernel"
174fi
175
176TOP_DIR=`absdir $0`
177TEST_DIR=$TOP_DIR/test.d
178TEST_CASES=`find_testcases $TEST_DIR`
179LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`/
180KEEP_LOG=0
181DEBUG=0
182VERBOSE=0
183UNSUPPORTED_RESULT=0
184UNRESOLVED_RESULT=0
185STOP_FAILURE=0
186# Parse command-line options
187parse_opts $*
188
189[ $DEBUG -ne 0 ] && set -x
190
191# Verify parameters
192if [ -z "$TRACING_DIR" -o ! -d "$TRACING_DIR" ]; then
193 errexit "No ftrace directory found"
194fi
195
196# Preparing logs
197if [ "x$LOG_DIR" = "x-" ]; then
198 LOG_FILE=
199 date
200else
201 LOG_FILE=$LOG_DIR/ftracetest.log
202 mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
203 date > $LOG_FILE
204fi
205
206# Define text colors
207# Check available colors on the terminal, if any
208ncolors=`tput colors 2>/dev/null || echo 0`
209color_reset=
210color_red=
211color_green=
212color_blue=
213# If stdout exists and number of colors is eight or more, use them
214if [ -t 1 -a "$ncolors" -ge 8 ]; then
215 color_reset="\033[0m"
216 color_red="\033[31m"
217 color_green="\033[32m"
218 color_blue="\033[34m"
219fi
220
221strip_esc() {
222 # busybox sed implementation doesn't accept "\x1B", so use [:cntrl:] instead.
223 sed -E "s/[[:cntrl:]]\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g"
224}
225
226prlog() { # messages
227 newline="\n"
228 if [ "$1" = "-n" ] ; then
229 newline=
230 shift
231 fi
232 printf "$*$newline"
233 [ "$LOG_FILE" ] && printf "$*$newline" | strip_esc >> $LOG_FILE
234}
235catlog() { #file
236 cat $1
237 [ "$LOG_FILE" ] && cat $1 | strip_esc >> $LOG_FILE
238}
239prlog "=== Ftrace unit tests ==="
240
241
242# Testcase management
243# Test result codes - Dejagnu extended code
244PASS=0 # The test succeeded.
245FAIL=1 # The test failed, but was expected to succeed.
246UNRESOLVED=2 # The test produced indeterminate results. (e.g. interrupted)
247UNTESTED=3 # The test was not run, currently just a placeholder.
248UNSUPPORTED=4 # The test failed because of lack of feature.
249XFAIL=5 # The test failed, and was expected to fail.
250
251# Accumulations
252PASSED_CASES=
253FAILED_CASES=
254UNRESOLVED_CASES=
255UNTESTED_CASES=
256UNSUPPORTED_CASES=
257XFAILED_CASES=
258UNDEFINED_CASES=
259TOTAL_RESULT=0
260
261INSTANCE=
262CASENO=0
263
264testcase() { # testfile
265 CASENO=$((CASENO+1))
266 desc=`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
267 prlog -n "[$CASENO]$INSTANCE$desc"
268}
269
270test_on_instance() { # testfile
271 grep -q "^#[ \t]*flags:.*instance" $1
272}
273
274eval_result() { # sigval
275 case $1 in
276 $PASS)
277 prlog " [${color_green}PASS${color_reset}]"
278 PASSED_CASES="$PASSED_CASES $CASENO"
279 return 0
280 ;;
281 $FAIL)
282 prlog " [${color_red}FAIL${color_reset}]"
283 FAILED_CASES="$FAILED_CASES $CASENO"
284 return 1 # this is a bug.
285 ;;
286 $UNRESOLVED)
287 prlog " [${color_blue}UNRESOLVED${color_reset}]"
288 UNRESOLVED_CASES="$UNRESOLVED_CASES $CASENO"
289 return $UNRESOLVED_RESULT # depends on use case
290 ;;
291 $UNTESTED)
292 prlog " [${color_blue}UNTESTED${color_reset}]"
293 UNTESTED_CASES="$UNTESTED_CASES $CASENO"
294 return 0
295 ;;
296 $UNSUPPORTED)
297 prlog " [${color_blue}UNSUPPORTED${color_reset}]"
298 UNSUPPORTED_CASES="$UNSUPPORTED_CASES $CASENO"
299 return $UNSUPPORTED_RESULT # depends on use case
300 ;;
301 $XFAIL)
302 prlog " [${color_green}XFAIL${color_reset}]"
303 XFAILED_CASES="$XFAILED_CASES $CASENO"
304 return 0
305 ;;
306 *)
307 prlog " [${color_blue}UNDEFINED${color_reset}]"
308 UNDEFINED_CASES="$UNDEFINED_CASES $CASENO"
309 return 1 # this must be a test bug
310 ;;
311 esac
312}
313
314# Signal handling for result codes
315SIG_RESULT=
316SIG_BASE=36 # Use realtime signals
317SIG_PID=$$
318
319exit_pass () {
320 exit 0
321}
322
323SIG_FAIL=$((SIG_BASE + FAIL))
324exit_fail () {
325 exit 1
326}
327trap 'SIG_RESULT=$FAIL' $SIG_FAIL
328
329SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
330exit_unresolved () {
331 kill -s $SIG_UNRESOLVED $SIG_PID
332 exit 0
333}
334trap 'SIG_RESULT=$UNRESOLVED' $SIG_UNRESOLVED
335
336SIG_UNTESTED=$((SIG_BASE + UNTESTED))
337exit_untested () {
338 kill -s $SIG_UNTESTED $SIG_PID
339 exit 0
340}
341trap 'SIG_RESULT=$UNTESTED' $SIG_UNTESTED
342
343SIG_UNSUPPORTED=$((SIG_BASE + UNSUPPORTED))
344exit_unsupported () {
345 kill -s $SIG_UNSUPPORTED $SIG_PID
346 exit 0
347}
348trap 'SIG_RESULT=$UNSUPPORTED' $SIG_UNSUPPORTED
349
350SIG_XFAIL=$((SIG_BASE + XFAIL))
351exit_xfail () {
352 kill -s $SIG_XFAIL $SIG_PID
353 exit 0
354}
355trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
356
357__run_test() { # testfile
358 # setup PID and PPID, $$ is not updated.
359 (cd $TRACING_DIR; read PID _ < /proc/self/stat; set -e; set -x; initialize_ftrace; . $1)
360 [ $? -ne 0 ] && kill -s $SIG_FAIL $SIG_PID
361}
362
363# Run one test case
364run_test() { # testfile
365 local testname=`basename $1`
366 testcase $1
367 if [ ! -z "$LOG_FILE" ] ; then
368 local testlog=`mktemp $LOG_DIR/${CASENO}-${testname}-log.XXXXXX`
369 else
370 local testlog=/proc/self/fd/1
371 fi
372 export TMPDIR=`mktemp -d /tmp/ftracetest-dir.XXXXXX`
373 export FTRACETEST_ROOT=$TOP_DIR
374 echo "execute$INSTANCE: "$1 > $testlog
375 SIG_RESULT=0
376 if [ $VERBOSE -eq -1 ]; then
377 __run_test $1
378 elif [ -z "$LOG_FILE" ]; then
379 __run_test $1 2>&1
380 elif [ $VERBOSE -ge 3 ]; then
381 __run_test $1 | tee -a $testlog 2>&1
382 elif [ $VERBOSE -eq 2 ]; then
383 __run_test $1 2>> $testlog | tee -a $testlog
384 else
385 __run_test $1 >> $testlog 2>&1
386 fi
387 eval_result $SIG_RESULT
388 if [ $? -eq 0 ]; then
389 # Remove test log if the test was done as it was expected.
390 [ $KEEP_LOG -eq 0 -a ! -z "$LOG_FILE" ] && rm $testlog
391 else
392 [ $VERBOSE -eq 1 -o $VERBOSE -eq 2 ] && catlog $testlog
393 TOTAL_RESULT=1
394 fi
395 rm -rf $TMPDIR
396}
397
398# load in the helper functions
399. $TEST_DIR/functions
400
401# Main loop
402for t in $TEST_CASES; do
403 run_test $t
404 if [ $STOP_FAILURE -ne 0 -a $TOTAL_RESULT -ne 0 ]; then
405 echo "A failure detected. Stop test."
406 exit 1
407 fi
408done
409
410# Test on instance loop
411INSTANCE=" (instance) "
412for t in $TEST_CASES; do
413 test_on_instance $t || continue
414 SAVED_TRACING_DIR=$TRACING_DIR
415 export TRACING_DIR=`mktemp -d $TRACING_DIR/instances/ftracetest.XXXXXX`
416 run_test $t
417 rmdir $TRACING_DIR
418 TRACING_DIR=$SAVED_TRACING_DIR
419 if [ $STOP_FAILURE -ne 0 -a $TOTAL_RESULT -ne 0 ]; then
420 echo "A failure detected. Stop test."
421 exit 1
422 fi
423done
424(cd $TRACING_DIR; initialize_ftrace) # for cleanup
425
426prlog ""
427prlog "# of passed: " `echo $PASSED_CASES | wc -w`
428prlog "# of failed: " `echo $FAILED_CASES | wc -w`
429prlog "# of unresolved: " `echo $UNRESOLVED_CASES | wc -w`
430prlog "# of untested: " `echo $UNTESTED_CASES | wc -w`
431prlog "# of unsupported: " `echo $UNSUPPORTED_CASES | wc -w`
432prlog "# of xfailed: " `echo $XFAILED_CASES | wc -w`
433prlog "# of undefined(test bug): " `echo $UNDEFINED_CASES | wc -w`
434
435cleanup
436
437# if no error, return 0
438exit $TOTAL_RESULT