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 " -K|--ktap Output in KTAP format"
17echo " -v|--verbose Increase verbosity of test messages"
18echo " -vv Alias of -v -v (Show all results in stdout)"
19echo " -vvv Alias of -v -v -v (Show all commands immediately)"
20echo " --fail-unsupported Treat UNSUPPORTED as a failure"
21echo " --fail-unresolved Treat UNRESOLVED as a failure"
22echo " -d|--debug Debug mode (trace all shell commands)"
23echo " -l|--logdir <dir> Save logs on the <dir>"
24echo " If <dir> is -, all logs output in console only"
25exit $1
26}
27
28# default error
29err_ret=1
30
31# kselftest skip code is 4
32err_skip=4
33
34# umount required
35UMOUNT_DIR=""
36
37# cgroup RT scheduling prevents chrt commands from succeeding, which
38# induces failures in test wakeup tests. Disable for the duration of
39# the tests.
40
41readonly sched_rt_runtime=/proc/sys/kernel/sched_rt_runtime_us
42
43sched_rt_runtime_orig=$(cat $sched_rt_runtime)
44
45setup() {
46 echo -1 > $sched_rt_runtime
47}
48
49cleanup() {
50 echo $sched_rt_runtime_orig > $sched_rt_runtime
51 if [ -n "${UMOUNT_DIR}" ]; then
52 umount ${UMOUNT_DIR} ||:
53 fi
54}
55
56errexit() { # message
57 echo "Error: $1" 1>&2
58 cleanup
59 exit $err_ret
60}
61
62# Ensuring user privilege
63if [ `id -u` -ne 0 ]; then
64 errexit "this must be run by root user"
65fi
66
67setup
68
69# Utilities
70absdir() { # file_path
71 (cd `dirname $1`; pwd)
72}
73
74abspath() {
75 echo `absdir $1`/`basename $1`
76}
77
78find_testcases() { #directory
79 echo `find $1 -name \*.tc | sort`
80}
81
82parse_opts() { # opts
83 local OPT_TEST_CASES=
84 local OPT_TEST_DIR=
85
86 while [ ! -z "$1" ]; do
87 case "$1" in
88 --help|-h)
89 usage 0
90 ;;
91 --keep|-k)
92 KEEP_LOG=1
93 shift 1
94 ;;
95 --ktap|-K)
96 KTAP=1
97 shift 1
98 ;;
99 --verbose|-v|-vv|-vvv)
100 if [ $VERBOSE -eq -1 ]; then
101 usage "--console can not use with --verbose"
102 fi
103 VERBOSE=$((VERBOSE + 1))
104 [ $1 = '-vv' ] && VERBOSE=$((VERBOSE + 1))
105 [ $1 = '-vvv' ] && VERBOSE=$((VERBOSE + 2))
106 shift 1
107 ;;
108 --console)
109 if [ $VERBOSE -ne 0 ]; then
110 usage "--console can not use with --verbose"
111 fi
112 VERBOSE=-1
113 shift 1
114 ;;
115 --debug|-d)
116 DEBUG=1
117 shift 1
118 ;;
119 --stop-fail)
120 STOP_FAILURE=1
121 shift 1
122 ;;
123 --fail-unsupported)
124 UNSUPPORTED_RESULT=1
125 shift 1
126 ;;
127 --fail-unresolved)
128 UNRESOLVED_RESULT=1
129 shift 1
130 ;;
131 --logdir|-l)
132 LOG_DIR=$2
133 LINK_PTR=
134 shift 2
135 ;;
136 *.tc)
137 if [ -f "$1" ]; then
138 OPT_TEST_CASES="$OPT_TEST_CASES `abspath $1`"
139 shift 1
140 else
141 usage 1 "$1 is not a testcase"
142 fi
143 ;;
144 *)
145 if [ -d "$1" ]; then
146 OPT_TEST_DIR=`abspath $1`
147 OPT_TEST_CASES="$OPT_TEST_CASES `find_testcases $OPT_TEST_DIR`"
148 shift 1
149 else
150 usage 1 "Invalid option ($1)"
151 fi
152 ;;
153 esac
154 done
155 if [ ! -z "$OPT_TEST_CASES" ]; then
156 TEST_CASES=$OPT_TEST_CASES
157 fi
158}
159
160# Parameters
161TRACING_DIR=`grep tracefs /proc/mounts | cut -f2 -d' ' | head -1`
162if [ -z "$TRACING_DIR" ]; then
163 DEBUGFS_DIR=`grep debugfs /proc/mounts | cut -f2 -d' ' | head -1`
164 if [ -z "$DEBUGFS_DIR" ]; then
165 # If tracefs exists, then so does /sys/kernel/tracing
166 if [ -d "/sys/kernel/tracing" ]; then
167 mount -t tracefs nodev /sys/kernel/tracing ||
168 errexit "Failed to mount /sys/kernel/tracing"
169 TRACING_DIR="/sys/kernel/tracing"
170 UMOUNT_DIR=${TRACING_DIR}
171 # If debugfs exists, then so does /sys/kernel/debug
172 elif [ -d "/sys/kernel/debug" ]; then
173 mount -t debugfs nodev /sys/kernel/debug ||
174 errexit "Failed to mount /sys/kernel/debug"
175 TRACING_DIR="/sys/kernel/debug/tracing"
176 UMOUNT_DIR=${TRACING_DIR}
177 else
178 err_ret=$err_skip
179 errexit "debugfs and tracefs are not configured in this kernel"
180 fi
181 else
182 TRACING_DIR="$DEBUGFS_DIR/tracing"
183 fi
184fi
185if [ ! -d "$TRACING_DIR" ]; then
186 err_ret=$err_skip
187 errexit "ftrace is not configured in this kernel"
188fi
189
190TOP_DIR=`absdir $0`
191TEST_DIR=$TOP_DIR/test.d
192TEST_CASES=`find_testcases $TEST_DIR`
193LOG_TOP_DIR=$TOP_DIR/logs
194LOG_DATE=`date +%Y%m%d-%H%M%S`
195LOG_DIR=$LOG_TOP_DIR/$LOG_DATE/
196LINK_PTR=$LOG_TOP_DIR/latest
197KEEP_LOG=0
198KTAP=0
199DEBUG=0
200VERBOSE=0
201UNSUPPORTED_RESULT=0
202UNRESOLVED_RESULT=0
203STOP_FAILURE=0
204# Parse command-line options
205parse_opts $*
206
207[ $DEBUG -ne 0 ] && set -x
208
209# Verify parameters
210if [ -z "$TRACING_DIR" -o ! -d "$TRACING_DIR" ]; then
211 errexit "No ftrace directory found"
212fi
213
214# Preparing logs
215if [ "x$LOG_DIR" = "x-" ]; then
216 LOG_FILE=
217 date
218else
219 LOG_FILE=$LOG_DIR/ftracetest.log
220 mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
221 date > $LOG_FILE
222 if [ "x-$LINK_PTR" != "x-" ]; then
223 unlink $LINK_PTR
224 ln -fs $LOG_DATE $LINK_PTR
225 fi
226fi
227
228# Define text colors
229# Check available colors on the terminal, if any
230ncolors=`tput colors 2>/dev/null || echo 0`
231color_reset=
232color_red=
233color_green=
234color_blue=
235# If stdout exists and number of colors is eight or more, use them
236if [ -t 1 -a "$ncolors" -ge 8 ]; then
237 color_reset="\033[0m"
238 color_red="\033[31m"
239 color_green="\033[32m"
240 color_blue="\033[34m"
241fi
242
243strip_esc() {
244 # busybox sed implementation doesn't accept "\x1B", so use [:cntrl:] instead.
245 sed -E "s/[[:cntrl:]]\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g"
246}
247
248prlog() { # messages
249 newline="\n"
250 if [ "$1" = "-n" ] ; then
251 newline=
252 shift
253 fi
254 [ "$KTAP" != "1" ] && printf "$*$newline"
255 [ "$LOG_FILE" ] && printf "$*$newline" | strip_esc >> $LOG_FILE
256}
257catlog() { #file
258 if [ "${KTAP}" = "1" ]; then
259 cat $1 | while read line ; do
260 echo "# $line"
261 done
262 else
263 cat $1
264 fi
265 [ "$LOG_FILE" ] && cat $1 | strip_esc >> $LOG_FILE
266}
267prlog "=== Ftrace unit tests ==="
268
269
270# Testcase management
271# Test result codes - Dejagnu extended code
272PASS=0 # The test succeeded.
273FAIL=1 # The test failed, but was expected to succeed.
274UNRESOLVED=2 # The test produced indeterminate results. (e.g. interrupted)
275UNTESTED=3 # The test was not run, currently just a placeholder.
276UNSUPPORTED=4 # The test failed because of lack of feature.
277XFAIL=5 # The test failed, and was expected to fail.
278
279# Accumulations
280PASSED_CASES=
281FAILED_CASES=
282UNRESOLVED_CASES=
283UNTESTED_CASES=
284UNSUPPORTED_CASES=
285XFAILED_CASES=
286UNDEFINED_CASES=
287TOTAL_RESULT=0
288
289INSTANCE=
290CASENO=0
291CASENAME=
292
293testcase() { # testfile
294 CASENO=$((CASENO+1))
295 CASENAME=`grep "^#[ \t]*description:" $1 | cut -f2- -d:`
296}
297
298checkreq() { # testfile
299 requires=`grep "^#[ \t]*requires:" $1 | cut -f2- -d:`
300 # Use eval to pass quoted-patterns correctly.
301 eval check_requires "$requires"
302}
303
304test_on_instance() { # testfile
305 grep -q "^#[ \t]*flags:.*instance" $1
306}
307
308ktaptest() { # result comment
309 if [ "$KTAP" != "1" ]; then
310 return
311 fi
312
313 local result=
314 if [ "$1" = "1" ]; then
315 result="ok"
316 else
317 result="not ok"
318 fi
319 shift
320
321 local comment=$*
322 if [ "$comment" != "" ]; then
323 comment="# $comment"
324 fi
325
326 echo $result $CASENO $INSTANCE$CASENAME $comment
327}
328
329eval_result() { # sigval
330 case $1 in
331 $PASS)
332 prlog " [${color_green}PASS${color_reset}]"
333 ktaptest 1
334 PASSED_CASES="$PASSED_CASES $CASENO"
335 return 0
336 ;;
337 $FAIL)
338 prlog " [${color_red}FAIL${color_reset}]"
339 ktaptest 0
340 FAILED_CASES="$FAILED_CASES $CASENO"
341 return 1 # this is a bug.
342 ;;
343 $UNRESOLVED)
344 prlog " [${color_blue}UNRESOLVED${color_reset}]"
345 ktaptest 0 UNRESOLVED
346 UNRESOLVED_CASES="$UNRESOLVED_CASES $CASENO"
347 return $UNRESOLVED_RESULT # depends on use case
348 ;;
349 $UNTESTED)
350 prlog " [${color_blue}UNTESTED${color_reset}]"
351 ktaptest 1 SKIP
352 UNTESTED_CASES="$UNTESTED_CASES $CASENO"
353 return 0
354 ;;
355 $UNSUPPORTED)
356 prlog " [${color_blue}UNSUPPORTED${color_reset}]"
357 ktaptest 1 SKIP
358 UNSUPPORTED_CASES="$UNSUPPORTED_CASES $CASENO"
359 return $UNSUPPORTED_RESULT # depends on use case
360 ;;
361 $XFAIL)
362 prlog " [${color_green}XFAIL${color_reset}]"
363 ktaptest 1 XFAIL
364 XFAILED_CASES="$XFAILED_CASES $CASENO"
365 return 0
366 ;;
367 *)
368 prlog " [${color_blue}UNDEFINED${color_reset}]"
369 ktaptest 0 error
370 UNDEFINED_CASES="$UNDEFINED_CASES $CASENO"
371 return 1 # this must be a test bug
372 ;;
373 esac
374}
375
376# Signal handling for result codes
377SIG_RESULT=
378SIG_BASE=36 # Use realtime signals
379SIG_PID=$$
380
381exit_pass () {
382 exit 0
383}
384
385SIG_FAIL=$((SIG_BASE + FAIL))
386exit_fail () {
387 exit 1
388}
389trap 'SIG_RESULT=$FAIL' $SIG_FAIL
390
391SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
392exit_unresolved () {
393 kill -s $SIG_UNRESOLVED $SIG_PID
394 exit 0
395}
396trap 'SIG_RESULT=$UNRESOLVED' $SIG_UNRESOLVED
397
398SIG_UNTESTED=$((SIG_BASE + UNTESTED))
399exit_untested () {
400 kill -s $SIG_UNTESTED $SIG_PID
401 exit 0
402}
403trap 'SIG_RESULT=$UNTESTED' $SIG_UNTESTED
404
405SIG_UNSUPPORTED=$((SIG_BASE + UNSUPPORTED))
406exit_unsupported () {
407 kill -s $SIG_UNSUPPORTED $SIG_PID
408 exit 0
409}
410trap 'SIG_RESULT=$UNSUPPORTED' $SIG_UNSUPPORTED
411
412SIG_XFAIL=$((SIG_BASE + XFAIL))
413exit_xfail () {
414 kill -s $SIG_XFAIL $SIG_PID
415 exit 0
416}
417trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
418
419__run_test() { # testfile
420 # setup PID and PPID, $$ is not updated.
421 (cd $TRACING_DIR; read PID _ < /proc/self/stat; set -e; set -x;
422 checkreq $1; initialize_ftrace; . $1)
423 [ $? -ne 0 ] && kill -s $SIG_FAIL $SIG_PID
424}
425
426# Run one test case
427run_test() { # testfile
428 local testname=`basename $1`
429 testcase $1
430 prlog -n "[$CASENO]$INSTANCE$CASENAME"
431 if [ ! -z "$LOG_FILE" ] ; then
432 local testlog=`mktemp $LOG_DIR/${CASENO}-${testname}-log.XXXXXX`
433 else
434 local testlog=/proc/self/fd/1
435 fi
436 export TMPDIR=`mktemp -d /tmp/ftracetest-dir.XXXXXX`
437 export FTRACETEST_ROOT=$TOP_DIR
438 echo "execute$INSTANCE: "$1 > $testlog
439 SIG_RESULT=0
440 if [ $VERBOSE -eq -1 ]; then
441 __run_test $1
442 elif [ -z "$LOG_FILE" ]; then
443 __run_test $1 2>&1
444 elif [ $VERBOSE -ge 3 ]; then
445 __run_test $1 | tee -a $testlog 2>&1
446 elif [ $VERBOSE -eq 2 ]; then
447 __run_test $1 2>> $testlog | tee -a $testlog
448 else
449 __run_test $1 >> $testlog 2>&1
450 fi
451 eval_result $SIG_RESULT
452 if [ $? -eq 0 ]; then
453 # Remove test log if the test was done as it was expected.
454 [ $KEEP_LOG -eq 0 -a ! -z "$LOG_FILE" ] && rm $testlog
455 else
456 [ $VERBOSE -eq 1 -o $VERBOSE -eq 2 ] && catlog $testlog
457 TOTAL_RESULT=1
458 fi
459 rm -rf $TMPDIR
460}
461
462# load in the helper functions
463. $TEST_DIR/functions
464
465if [ "$KTAP" = "1" ]; then
466 echo "TAP version 13"
467
468 casecount=`echo $TEST_CASES | wc -w`
469 for t in $TEST_CASES; do
470 test_on_instance $t || continue
471 casecount=$((casecount+1))
472 done
473 echo "1..${casecount}"
474fi
475
476# Main loop
477for t in $TEST_CASES; do
478 run_test $t
479 if [ $STOP_FAILURE -ne 0 -a $TOTAL_RESULT -ne 0 ]; then
480 echo "A failure detected. Stop test."
481 exit 1
482 fi
483done
484
485# Test on instance loop
486INSTANCE=" (instance) "
487for t in $TEST_CASES; do
488 test_on_instance $t || continue
489 SAVED_TRACING_DIR=$TRACING_DIR
490 export TRACING_DIR=`mktemp -d $TRACING_DIR/instances/ftracetest.XXXXXX`
491 run_test $t
492 rmdir $TRACING_DIR
493 TRACING_DIR=$SAVED_TRACING_DIR
494 if [ $STOP_FAILURE -ne 0 -a $TOTAL_RESULT -ne 0 ]; then
495 echo "A failure detected. Stop test."
496 exit 1
497 fi
498done
499(cd $TRACING_DIR; finish_ftrace) # for cleanup
500
501prlog ""
502prlog "# of passed: " `echo $PASSED_CASES | wc -w`
503prlog "# of failed: " `echo $FAILED_CASES | wc -w`
504prlog "# of unresolved: " `echo $UNRESOLVED_CASES | wc -w`
505prlog "# of untested: " `echo $UNTESTED_CASES | wc -w`
506prlog "# of unsupported: " `echo $UNSUPPORTED_CASES | wc -w`
507prlog "# of xfailed: " `echo $XFAILED_CASES | wc -w`
508prlog "# of undefined(test bug): " `echo $UNDEFINED_CASES | wc -w`
509
510if [ "$KTAP" = "1" ]; then
511 echo -n "# Totals:"
512 echo -n " pass:"`echo $PASSED_CASES | wc -w`
513 echo -n " fail:"`echo $FAILED_CASES | wc -w`
514 echo -n " xfail:"`echo $XFAILED_CASES | wc -w`
515 echo -n " xpass:0"
516 echo -n " skip:"`echo $UNTESTED_CASES $UNSUPPORTED_CASES | wc -w`
517 echo -n " error:"`echo $UNRESOLVED_CASES $UNDEFINED_CASES | wc -w`
518 echo
519fi
520
521cleanup
522
523# if no error, return 0
524exit $TOTAL_RESULT