tools/testing/selftests/ftrace/ftracetest

   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
  10 usage() { # errno [message]
  11 [ ! -z "$2" ] && echo $2
  12 echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
  13 echo " Options:"
  14 echo "          -h|--help  Show help message"
  15 echo "          -k|--keep  Keep passed test logs"
  16 echo "          -K|--ktap  Output in KTAP format"
  17 echo "          -v|--verbose Increase verbosity of test messages"
  18 echo "          -vv        Alias of -v -v (Show all results in stdout)"
  19 echo "          -vvv       Alias of -v -v -v (Show all commands immediately)"
  20 echo "          --fail-unsupported Treat UNSUPPORTED as a failure"
  21 echo "          --fail-unresolved Treat UNRESOLVED as a failure"
  22 echo "          -d|--debug Debug mode (trace all shell commands)"
  23 echo "          -l|--logdir <dir> Save logs on the <dir>"
  24 echo "                      If <dir> is -, all logs output in console only"
  25 exit $1
  26 }
  27
  28 # default error
  29 err_ret=1
  30
  31 # kselftest skip code is 4
  32 err_skip=4
  33
  34 # umount required
  35 UMOUNT_DIR=""
  36
  37 # cgroup RT scheduling prevents chrt commands from succeeding, which
  38 # induces failures in test wakeup tests.  Disable for the duration of
  39 # the tests.
  40
  41 readonly sched_rt_runtime=/proc/sys/kernel/sched_rt_runtime_us
  42
  43 sched_rt_runtime_orig=$(cat $sched_rt_runtime)
  44
  45 setup() {
  46   echo -1 > $sched_rt_runtime
  47 }
  48
  49 cleanup() {
  50   echo $sched_rt_runtime_orig > $sched_rt_runtime
  51   if [ -n "${UMOUNT_DIR}" ]; then
  52     umount ${UMOUNT_DIR} ||:
  53   fi
  54 }
  55
  56 errexit() { # message
  57   echo "Error: $1" 1>&2
  58   cleanup
  59   exit $err_ret
  60 }
  61
  62 # Ensuring user privilege
  63 if [ `id -u` -ne 0 ]; then
  64   errexit "this must be run by root user"
  65 fi
  66
  67 setup
  68
  69 # Utilities
  70 absdir() { # file_path
  71   (cd `dirname $1`; pwd)
  72 }
  73
  74 abspath() {
  75   echo `absdir $1`/`basename $1`
  76 }
  77
  78 find_testcases() { #directory
  79   echo `find $1 -name \*.tc | sort`
  80 }
  81
  82 parse_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=$OPT_TEST_CASES
 157   fi
 158 }
 159
 160 # Parameters
 161 TRACING_DIR=`grep tracefs /proc/mounts | cut -f2 -d' ' | head -1`
 162 if [ -z "$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="$DEBUGFS_DIR/tracing"
 183     fi
 184 fi
 185 if [ ! -d "$TRACING_DIR" ]; then
 186     err_ret=$err_skip
 187     errexit "ftrace is not configured in this kernel"
 188 fi
 189
 190 TOP_DIR=`absdir $0`
 191 TEST_DIR=$TOP_DIR/test.d
 192 TEST_CASES=`find_testcases $TEST_DIR`
 193 LOG_TOP_DIR=$TOP_DIR/logs
 194 LOG_DATE=`date +%Y%m%d-%H%M%S`
 195 LOG_DIR=$LOG_TOP_DIR/$LOG_DATE/
 196 LINK_PTR=$LOG_TOP_DIR/latest
 197 KEEP_LOG=0
 198 KTAP=0
 199 DEBUG=0
 200 VERBOSE=0
 201 UNSUPPORTED_RESULT=0
 202 UNRESOLVED_RESULT=0
 203 STOP_FAILURE=0
 204 # Parse command-line options
 205 parse_opts $*
 206
 207 [ $DEBUG -ne 0 ] && set -x
 208
 209 # Verify parameters
 210 if [ -z "$TRACING_DIR" -o ! -d "$TRACING_DIR" ]; then
 211   errexit "No ftrace directory found"
 212 fi
 213
 214 # Preparing logs
 215 if [ "x$LOG_DIR" = "x-" ]; then
 216   LOG_FILE=
 217   date
 218 else
 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 $LINK_PTR
 225   fi
 226 fi
 227
 228 # Define text colors
 229 # Check available colors on the terminal, if any
 230 ncolors=`tput colors 2>/dev/null || echo 0`
 231 color_reset=
 232 color_red=
 233 color_green=
 234 color_blue=
 235 # If stdout exists and number of colors is eight or more, use them
 236 if [ -t 1 -a "$ncolors" -ge 8 ]; then
 237   color_reset="\033[0m"
 238   color_red="\033[31m"
 239   color_green="\033[32m"
 240   color_blue="\033[34m"
 241 fi
 242
 243 strip_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
 248 prlog() { # 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 >> $LOG_FILE
 256 }
 257 catlog() { #file
 258   if [ "${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 >> $LOG_FILE
 266 }
 267 prlog "=== Ftrace unit tests ==="
 268
 269
 270 # Testcase management
 271 # Test result codes - Dejagnu extended code
 272 PASS=0  # The test succeeded.
 273 FAIL=1  # The test failed, but was expected to succeed.
 274 UNRESOLVED=2  # The test produced indeterminate results. (e.g. interrupted)
 275 UNTESTED=3    # The test was not run, currently just a placeholder.
 276 UNSUPPORTED=4 # The test failed because of lack of feature.
 277 XFAIL=5 # The test failed, and was expected to fail.
 278
 279 # Accumulations
 280 PASSED_CASES=
 281 FAILED_CASES=
 282 UNRESOLVED_CASES=
 283 UNTESTED_CASES=
 284 UNSUPPORTED_CASES=
 285 XFAILED_CASES=
 286 UNDEFINED_CASES=
 287 TOTAL_RESULT=0
 288
 289 INSTANCE=
 290 CASENO=0
 291 CASENAME=
 292
 293 testcase() { # testfile
 294   CASENO=$((CASENO+1))
 295   CASENAME=`grep "^#[ \t]*description:" $1 | cut -f2- -d:`
 296 }
 297
 298 checkreq() { # 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
 304 test_on_instance() { # testfile
 305   grep -q "^#[ \t]*flags:.*instance" $1
 306 }
 307
 308 ktaptest() { # result comment
 309   if [ "$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
 329 eval_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
 377 SIG_RESULT=
 378 SIG_BASE=36     # Use realtime signals
 379 SIG_PID=$$
 380
 381 exit_pass () {
 382   exit 0
 383 }
 384
 385 SIG_FAIL=$((SIG_BASE + FAIL))
 386 exit_fail () {
 387   exit 1
 388 }
 389 trap 'SIG_RESULT=$FAIL' $SIG_FAIL
 390
 391 SIG_UNRESOLVED=$((SIG_BASE + UNRESOLVED))
 392 exit_unresolved () {
 393   kill -s $SIG_UNRESOLVED $SIG_PID
 394   exit 0
 395 }
 396 trap 'SIG_RESULT=$UNRESOLVED' $SIG_UNRESOLVED
 397
 398 SIG_UNTESTED=$((SIG_BASE + UNTESTED))
 399 exit_untested () {
 400   kill -s $SIG_UNTESTED $SIG_PID
 401   exit 0
 402 }
 403 trap 'SIG_RESULT=$UNTESTED' $SIG_UNTESTED
 404
 405 SIG_UNSUPPORTED=$((SIG_BASE + UNSUPPORTED))
 406 exit_unsupported () {
 407   kill -s $SIG_UNSUPPORTED $SIG_PID
 408   exit 0
 409 }
 410 trap 'SIG_RESULT=$UNSUPPORTED' $SIG_UNSUPPORTED
 411
 412 SIG_XFAIL=$((SIG_BASE + XFAIL))
 413 exit_xfail () {
 414   kill -s $SIG_XFAIL $SIG_PID
 415   exit 0
 416 }
 417 trap 'SIG_RESULT=$XFAIL' $SIG_XFAIL
 418
 419 __run_test() { # testfile
 420   # setup PID and PPID, $$ 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
 427 run_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 . $TEST_DIR/functions
 464
 465 if [ "$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}"
 474 fi
 475
 476 # Main loop
 477 for 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
 483 done
 484
 485 # Test on instance loop
 486 INSTANCE=" (instance) "
 487 for 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
 498 done
 499 (cd $TRACING_DIR; finish_ftrace) # for cleanup
 500
 501 prlog ""
 502 prlog "# of passed: " `echo $PASSED_CASES | wc -w`
 503 prlog "# of failed: " `echo $FAILED_CASES | wc -w`
 504 prlog "# of unresolved: " `echo $UNRESOLVED_CASES | wc -w`
 505 prlog "# of untested: " `echo $UNTESTED_CASES | wc -w`
 506 prlog "# of unsupported: " `echo $UNSUPPORTED_CASES | wc -w`
 507 prlog "# of xfailed: " `echo $XFAILED_CASES | wc -w`
 508 prlog "# of undefined(test bug): " `echo $UNDEFINED_CASES | wc -w`
 509
 510 if [ "$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
 519 fi
 520
 521 cleanup
 522
 523 # if no error, return 0
 524 exit $TOTAL_RESULT