tools/testing/selftests/rcutorture/bin/kvm.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0+
   3 #
   4 # Run a series of tests under KVM.  By default, this series is specified
   5 # by the relevant CFLIST file, but can be overridden by the --configs
   6 # command-line argument.
   7 #
   8 # Usage: kvm.sh [ options ]
   9 #
  10 # Copyright (C) IBM Corporation, 2011
  11 #
  12 # Authors: Paul E. McKenney <paulmck@linux.ibm.com>
  13
  14 scriptname=$0
  15 args="$*"
  16
  17 T=${TMPDIR-/tmp}/kvm.sh.$$
  18 trap 'rm -rf $T' 0
  19 mkdir $T
  20
  21 cd `dirname $scriptname`/../../../../../
  22
  23 # This script knows only English.
  24 LANG=en_US.UTF-8; export LANG
  25
  26 dur=$((30*60))
  27 dryrun=""
  28 KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
  29 PATH=${KVM}/bin:$PATH; export PATH
  30 . functions.sh
  31
  32 TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
  33 TORTURE_DEFCONFIG=defconfig
  34 TORTURE_BOOT_IMAGE=""
  35 TORTURE_BUILDONLY=
  36 TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
  37 TORTURE_KCONFIG_ARG=""
  38 TORTURE_KCONFIG_GDB_ARG=""
  39 TORTURE_BOOT_GDB_ARG=""
  40 TORTURE_QEMU_GDB_ARG=""
  41 TORTURE_JITTER_START=""
  42 TORTURE_JITTER_STOP=""
  43 TORTURE_KCONFIG_KASAN_ARG=""
  44 TORTURE_KCONFIG_KCSAN_ARG=""
  45 TORTURE_KMAKE_ARG=""
  46 TORTURE_QEMU_MEM=512
  47 TORTURE_REMOTE=
  48 TORTURE_SHUTDOWN_GRACE=180
  49 TORTURE_SUITE=rcu
  50 TORTURE_MOD=rcutorture
  51 TORTURE_TRUST_MAKE=""
  52 resdir=""
  53 configs=""
  54 cpus=0
  55 ds=`date +%Y.%m.%d-%H.%M.%S`
  56 jitter="-1"
  57
  58 startdate="`date`"
  59 starttime="`get_starttime`"
  60
  61 usage () {
  62         echo "Usage: $scriptname optional arguments:"
  63         echo "       --allcpus"
  64         echo "       --bootargs kernel-boot-arguments"
  65         echo "       --bootimage relative-path-to-kernel-boot-image"
  66         echo "       --buildonly"
  67         echo "       --configs \"config-file list w/ repeat factor (3*TINY01)\""
  68         echo "       --cpus N"
  69         echo "       --datestamp string"
  70         echo "       --defconfig string"
  71         echo "       --dryrun batches|scenarios|sched|script"
  72         echo "       --duration minutes | <seconds>s | <hours>h | <days>d"
  73         echo "       --gdb"
  74         echo "       --help"
  75         echo "       --interactive"
  76         echo "       --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
  77         echo "       --kconfig Kconfig-options"
  78         echo "       --kmake-arg kernel-make-arguments"
  79         echo "       --mac nn:nn:nn:nn:nn:nn"
  80         echo "       --memory megabytes|nnnG"
  81         echo "       --no-initrd"
  82         echo "       --qemu-args qemu-arguments"
  83         echo "       --qemu-cmd qemu-system-..."
  84         echo "       --remote"
  85         echo "       --results absolute-pathname"
  86         echo "       --torture lock|rcu|rcuscale|refscale|scf"
  87         echo "       --trust-make"
  88         exit 1
  89 }
  90
  91 while test $# -gt 0
  92 do
  93         case "$1" in
  94         --allcpus)
  95                 cpus=$TORTURE_ALLOTED_CPUS
  96                 max_cpus=$TORTURE_ALLOTED_CPUS
  97                 ;;
  98         --bootargs|--bootarg)
  99                 checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
 100                 TORTURE_BOOTARGS="$TORTURE_BOOTARGS $2"
 101                 shift
 102                 ;;
 103         --bootimage)
 104                 checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
 105                 TORTURE_BOOT_IMAGE="$2"
 106                 shift
 107                 ;;
 108         --buildonly|--build-only)
 109                 TORTURE_BUILDONLY=1
 110                 ;;
 111         --configs|--config)
 112                 checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
 113                 configs="$configs $2"
 114                 shift
 115                 ;;
 116         --cpus)
 117                 checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
 118                 cpus=$2
 119                 TORTURE_ALLOTED_CPUS="$2"
 120                 if test -z "$TORTURE_REMOTE"
 121                 then
 122                         max_cpus="`identify_qemu_vcpus`"
 123                         if test "$TORTURE_ALLOTED_CPUS" -gt "$max_cpus"
 124                         then
 125                                 TORTURE_ALLOTED_CPUS=$max_cpus
 126                         fi
 127                 fi
 128                 shift
 129                 ;;
 130         --datestamp)
 131                 checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
 132                 ds=$2
 133                 shift
 134                 ;;
 135         --defconfig)
 136                 checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
 137                 TORTURE_DEFCONFIG=$2
 138                 shift
 139                 ;;
 140         --dryrun)
 141                 checkarg --dryrun "batches|sched|script" $# "$2" 'batches\|scenarios\|sched\|script' '^--'
 142                 dryrun=$2
 143                 shift
 144                 ;;
 145         --duration)
 146                 checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
 147                 mult=60
 148                 if echo "$2" | grep -q 's$'
 149                 then
 150                         mult=1
 151                 elif echo "$2" | grep -q 'h$'
 152                 then
 153                         mult=3600
 154                 elif echo "$2" | grep -q 'd$'
 155                 then
 156                         mult=86400
 157                 fi
 158                 ts=`echo $2 | sed -e 's/[smhd]$//'`
 159                 dur=$(($ts*mult))
 160                 shift
 161                 ;;
 162         --gdb)
 163                 TORTURE_KCONFIG_GDB_ARG="CONFIG_DEBUG_INFO=y"; export TORTURE_KCONFIG_GDB_ARG
 164                 TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
 165                 TORTURE_QEMU_GDB_ARG="-s -S"; export TORTURE_QEMU_GDB_ARG
 166                 ;;
 167         --help|-h)
 168                 usage
 169                 ;;
 170         --interactive)
 171                 TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
 172                 ;;
 173         --jitter)
 174                 checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
 175                 jitter="$2"
 176                 shift
 177                 ;;
 178         --kconfig|--kconfigs)
 179                 checkarg --kconfig "(Kconfig options)" $# "$2" '^CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\( CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\)*$' '^error$'
 180                 TORTURE_KCONFIG_ARG="`echo "$TORTURE_KCONFIG_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 181                 shift
 182                 ;;
 183         --kasan)
 184                 TORTURE_KCONFIG_KASAN_ARG="CONFIG_DEBUG_INFO=y CONFIG_KASAN=y"; export TORTURE_KCONFIG_KASAN_ARG
 185                 ;;
 186         --kcsan)
 187                 TORTURE_KCONFIG_KCSAN_ARG="CONFIG_DEBUG_INFO=y CONFIG_KCSAN=y CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=n CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY=n CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000 CONFIG_KCSAN_INTERRUPT_WATCHER=y CONFIG_KCSAN_VERBOSE=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y"; export TORTURE_KCONFIG_KCSAN_ARG
 188                 ;;
 189         --kmake-arg|--kmake-args)
 190                 checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
 191                 TORTURE_KMAKE_ARG="`echo "$TORTURE_KMAKE_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 192                 shift
 193                 ;;
 194         --mac)
 195                 checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
 196                 TORTURE_QEMU_MAC=$2
 197                 shift
 198                 ;;
 199         --memory)
 200                 checkarg --memory "(memory size)" $# "$2" '^[0-9]\+[MG]\?$' error
 201                 TORTURE_QEMU_MEM=$2
 202                 shift
 203                 ;;
 204         --no-initrd)
 205                 TORTURE_INITRD=""; export TORTURE_INITRD
 206                 ;;
 207         --qemu-args|--qemu-arg)
 208                 checkarg --qemu-args "(qemu arguments)" $# "$2" '^-' '^error'
 209                 TORTURE_QEMU_ARG="`echo "$TORTURE_QEMU_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 210                 shift
 211                 ;;
 212         --qemu-cmd)
 213                 checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
 214                 TORTURE_QEMU_CMD="$2"
 215                 shift
 216                 ;;
 217         --remote)
 218                 TORTURE_REMOTE=1
 219                 ;;
 220         --results)
 221                 checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
 222                 resdir=$2
 223                 shift
 224                 ;;
 225         --shutdown-grace)
 226                 checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
 227                 TORTURE_SHUTDOWN_GRACE=$2
 228                 shift
 229                 ;;
 230         --torture)
 231                 checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\)$' '^--'
 232                 TORTURE_SUITE=$2
 233                 TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
 234                 shift
 235                 if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
 236                 then
 237                         # If you really want jitter for refscale or
 238                         # rcuscale, specify it after specifying the rcuscale
 239                         # or the refscale.  (But why jitter in these cases?)
 240                         jitter=0
 241                 fi
 242                 ;;
 243         --trust-make)
 244                 TORTURE_TRUST_MAKE="y"
 245                 ;;
 246         *)
 247                 echo Unknown argument $1
 248                 usage
 249                 ;;
 250         esac
 251         shift
 252 done
 253
 254 if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh
 255 then
 256         :
 257 else
 258         echo No initrd and unable to create one, aborting test >&2
 259         exit 1
 260 fi
 261
 262 CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
 263
 264 defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
 265 if test -z "$configs"
 266 then
 267         configs=$defaultconfigs
 268 fi
 269
 270 if test -z "$resdir"
 271 then
 272         resdir=$KVM/res
 273 fi
 274
 275 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
 276 configs_derep=
 277 for CF in $configs
 278 do
 279         case $CF in
 280         [0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**)
 281                 config_reps=`echo $CF | sed -e 's/\*.*$//'`
 282                 CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
 283                 ;;
 284         *)
 285                 config_reps=1
 286                 CF1=$CF
 287                 ;;
 288         esac
 289         for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
 290         do
 291                 configs_derep="$configs_derep $CF1"
 292         done
 293 done
 294 touch $T/cfgcpu
 295 configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
 296 if test -n "$TORTURE_KCONFIG_GDB_ARG"
 297 then
 298         if test "`echo $configs_derep | wc -w`" -gt 1
 299         then
 300                 echo "The --config list is: $configs_derep."
 301                 echo "Only one --config permitted with --gdb, terminating."
 302                 exit 1
 303         fi
 304 fi
 305 echo 'BEGIN {' > $T/cfgcpu.awk
 306 for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
 307 do
 308         if test -f "$CONFIGFRAG/$CF1"
 309         then
 310                 if echo "$TORTURE_KCONFIG_ARG" | grep -q '\<CONFIG_NR_CPUS='
 311                 then
 312                         echo "$TORTURE_KCONFIG_ARG" | tr -s ' ' | tr ' ' '\012' > $T/KCONFIG_ARG
 313                         cpu_count=`configNR_CPUS.sh $T/KCONFIG_ARG`
 314                 else
 315                         cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
 316                 fi
 317                 cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
 318                 cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
 319                 echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
 320         else
 321                 echo "The --configs file $CF1 does not exist, terminating."
 322                 exit 1
 323         fi
 324 done
 325 cat << '___EOF___' >> $T/cfgcpu.awk
 326 }
 327 {
 328         for (i = 1; i <= NF; i++)
 329                 print $i, scenariocpu[$i];
 330 }
 331 ___EOF___
 332 echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
 333 sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
 334
 335 # Use a greedy bin-packing algorithm, sorting the list accordingly.
 336 awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
 337 BEGIN {
 338         njobs = 0;
 339 }
 340
 341 {
 342         # Read file of tests and corresponding required numbers of CPUs.
 343         cf[njobs] = $1;
 344         cpus[njobs] = $2;
 345         njobs++;
 346 }
 347
 348 END {
 349         batch = 0;
 350         nc = -1;
 351
 352         # Each pass through the following loop creates on test batch that
 353         # can be executed concurrently given ncpus.  Note that a given test
 354         # that requires more than the available CPUs will run in its own
 355         # batch.  Such tests just have to make do with what is available.
 356         while (nc != ncpus) {
 357                 batch++;
 358                 nc = ncpus;
 359
 360                 # Each pass through the following loop considers one
 361                 # test for inclusion in the current batch.
 362                 for (i = 0; i < njobs; i++) {
 363                         if (done[i])
 364                                 continue; # Already part of a batch.
 365                         if (nc >= cpus[i] || nc == ncpus) {
 366
 367                                 # This test fits into the current batch.
 368                                 done[i] = batch;
 369                                 nc -= cpus[i];
 370                                 if (nc <= 0)
 371                                         break; # Too-big test in its own batch.
 372                         }
 373                 }
 374         }
 375
 376         # Dump out the tests in batch order.
 377         for (b = 1; b <= batch; b++)
 378                 for (i = 0; i < njobs; i++)
 379                         if (done[i] == b)
 380                                 print cf[i], cpus[i];
 381 }'
 382
 383 # Generate a script to execute the tests in appropriate batches.
 384 cat << ___EOF___ > $T/script
 385 CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
 386 KVM="$KVM"; export KVM
 387 PATH="$PATH"; export PATH
 388 TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
 389 TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
 390 TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
 391 TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
 392 TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
 393 TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
 394 TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG
 395 TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG
 396 TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG
 397 TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG
 398 TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG
 399 TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
 400 TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD
 401 TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
 402 TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
 403 TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
 404 TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM
 405 TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
 406 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
 407 TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE
 408 if ! test -e $resdir
 409 then
 410         mkdir -p "$resdir" || :
 411 fi
 412 mkdir -p $resdir/$ds
 413 TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR
 414 TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE
 415 echo Results directory: $resdir/$ds
 416 echo $scriptname $args
 417 touch $resdir/$ds/log
 418 echo $scriptname $args >> $resdir/$ds/log
 419 echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite
 420 echo Build directory: `pwd` > $resdir/$ds/testid.txt
 421 if test -d .git
 422 then
 423         echo Current commit: `git rev-parse HEAD` >> $resdir/$ds/testid.txt
 424         echo >> $resdir/$ds/testid.txt
 425         echo ' ---' Output of "'"git status"'": >> $resdir/$ds/testid.txt
 426         git status >> $resdir/$ds/testid.txt
 427         echo >> $resdir/$ds/testid.txt
 428         echo >> $resdir/$ds/testid.txt
 429         echo ' ---' Output of "'"git diff HEAD"'": >> $resdir/$ds/testid.txt
 430         git diff HEAD >> $resdir/$ds/testid.txt
 431 fi
 432 ___EOF___
 433 awk < $T/cfgcpu.pack \
 434         -v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
 435         -v CONFIGDIR="$CONFIGFRAG/" \
 436         -v KVM="$KVM" \
 437         -v ncpus=$cpus \
 438         -v jitter="$jitter" \
 439         -v rd=$resdir/$ds/ \
 440         -v dur=$dur \
 441         -v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
 442         -v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
 443 'BEGIN {
 444         i = 0;
 445 }
 446
 447 {
 448         cf[i] = $1;
 449         cpus[i] = $2;
 450         i++;
 451 }
 452
 453 # Dump out the scripting required to run one test batch.
 454 function dump(first, pastlast, batchnum)
 455 {
 456         print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log";
 457         print "needqemurun="
 458         jn=1
 459         njitter = 0;
 460         split(jitter, ja);
 461         if (ja[1] == -1 && ncpus == 0)
 462                 njitter = 1;
 463         else if (ja[1] == -1)
 464                 njitter = ncpus;
 465         else
 466                 njitter = ja[1];
 467         print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START";
 468         print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP"
 469         for (j = first; j < pastlast; j++) {
 470                 cpusr[jn] = cpus[j];
 471                 if (cfrep[cf[j]] == "") {
 472                         cfr[jn] = cf[j];
 473                         cfrep[cf[j]] = 1;
 474                 } else {
 475                         cfrep[cf[j]]++;
 476                         cfr[jn] = cf[j] "." cfrep[cf[j]];
 477                 }
 478                 builddir=rd cfr[jn] "/build";
 479                 if (cpusr[jn] > ncpus && ncpus != 0)
 480                         ovf = "-ovf";
 481                 else
 482                         ovf = "";
 483                 print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log";
 484                 print "mkdir " rd cfr[jn] " || :";
 485                 print "touch " builddir ".wait";
 486                 print "kvm-test-1-run.sh " CONFIGDIR cf[j], rd cfr[jn], dur " \"" TORTURE_QEMU_ARG "\" \"" TORTURE_BOOTARGS "\" > " rd cfr[jn]  "/kvm-test-1-run.sh.out 2>&1 &"
 487                 print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log";
 488                 print "while test -f " builddir ".wait"
 489                 print "do"
 490                 print "\tsleep 1"
 491                 print "done"
 492                 print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log";
 493                 jn++;
 494         }
 495         print "runfiles="
 496         for (j = 1; j < jn; j++) {
 497                 builddir=rd cfr[j] "/build";
 498                 if (TORTURE_BUILDONLY)
 499                         print "rm -f " builddir ".ready"
 500                 else
 501                         print "mv " builddir ".ready " builddir ".run"
 502                         print "runfiles=\"$runfiles " builddir ".run\""
 503                 fi
 504                 print "if test -f \"" rd cfr[j] "/builtkernel\""
 505                 print "then"
 506                 print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log";
 507                 print "\tneedqemurun=1"
 508                 print "fi"
 509         }
 510         if (TORTURE_BUILDONLY && njitter != 0) {
 511                 njitter = 0;
 512                 print "echo Build-only run, so suppressing jitter | tee -a " rd "log"
 513         }
 514         if (TORTURE_BUILDONLY) {
 515                 print "needqemurun="
 516         }
 517         print "if test -n \"$needqemurun\""
 518         print "then"
 519         print "\techo ---- Starting kernels. `date` | tee -a " rd "log";
 520         print "\t$TORTURE_JITTER_START";
 521         print "\twhile ls $runfiles > /dev/null 2>&1"
 522         print "\tdo"
 523         print "\t\t:"
 524         print "\tdone"
 525         print "\t$TORTURE_JITTER_STOP";
 526         print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log";
 527         print "else"
 528         print "\twait"
 529         print "\techo ---- No kernel runs. `date` | tee -a " rd "log";
 530         print "fi"
 531         for (j = 1; j < jn; j++) {
 532                 print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log";
 533                 print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out | tee -a " rd "log";
 534         }
 535 }
 536
 537 END {
 538         njobs = i;
 539         nc = ncpus;
 540         first = 0;
 541         batchnum = 1;
 542
 543         # Each pass through the following loop considers one test.
 544         for (i = 0; i < njobs; i++) {
 545                 if (ncpus == 0) {
 546                         # Sequential test specified, each test its own batch.
 547                         dump(i, i + 1, batchnum);
 548                         first = i;
 549                         batchnum++;
 550                 } else if (nc < cpus[i] && i != 0) {
 551                         # Out of CPUs, dump out a batch.
 552                         dump(first, i, batchnum);
 553                         first = i;
 554                         nc = ncpus;
 555                         batchnum++;
 556                 }
 557                 # Account for the CPUs needed by the current test.
 558                 nc -= cpus[i];
 559         }
 560         # Dump the last batch.
 561         if (ncpus != 0)
 562                 dump(first, i, batchnum);
 563 }' >> $T/script
 564 echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script
 565
 566 # Extract the tests and their batches from the script.
 567 egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
 568         sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' |
 569         awk '
 570         /^----Start/ {
 571                 batchno = $3;
 572                 next;
 573         }
 574         {
 575                 print batchno, $1, $2
 576         }' > $T/batches
 577
 578 # As above, but one line per batch.
 579 grep -v '^#' $T/batches | awk '
 580 BEGIN {
 581         oldbatch = 1;
 582 }
 583
 584 {
 585         if (oldbatch != $1) {
 586                 print ++n ". " curbatch;
 587                 curbatch = "";
 588                 oldbatch = $1;
 589         }
 590         curbatch = curbatch " " $2;
 591 }
 592
 593 END {
 594         print ++n ". " curbatch;
 595 }' > $T/scenarios
 596
 597 if test "$dryrun" = script
 598 then
 599         cat $T/script
 600         exit 0
 601 elif test "$dryrun" = sched
 602 then
 603         # Extract the test run schedule from the script.
 604         egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
 605                 sed -e 's/:.*$//' -e 's/^echo //'
 606         nbuilds="`grep 'Starting build\.' $T/script |
 607                   grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' |
 608                   awk '{ print $1 }' | grep -v '\.' | wc -l`"
 609         echo Total number of builds: $nbuilds
 610         nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`"
 611         echo Total number of batches: $nbatches
 612         exit 0
 613 elif test "$dryrun" = batches
 614 then
 615         cat $T/batches
 616         exit 0
 617 elif test "$dryrun" = scenarios
 618 then
 619         cat $T/scenarios
 620         exit 0
 621 else
 622         # Not a dryrun.  Record the batches and the number of CPUs, then run the script.
 623         bash $T/script
 624         ret=$?
 625         cp $T/batches $resdir/$ds/batches
 626         cp $T/scenarios $resdir/$ds/scenarios
 627         echo '#' cpus=$cpus >> $resdir/$ds/batches
 628         exit $ret
 629 fi
 630
 631 # Tracing: trace_event=rcu:rcu_grace_period,rcu:rcu_future_grace_period,rcu:rcu_grace_period_init,rcu:rcu_nocb_wake,rcu:rcu_preempt_task,rcu:rcu_unlock_preempted_task,rcu:rcu_quiescent_state_report,rcu:rcu_fqs,rcu:rcu_callback,rcu:rcu_kfree_callback,rcu:rcu_batch_start,rcu:rcu_invoke_callback,rcu:rcu_invoke_kfree_callback,rcu:rcu_batch_end,rcu:rcu_torture_read,rcu:rcu_barrier
 632 # Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop
 633 # Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y"
 634 # Control buffer size: --bootargs trace_buf_size=3k
 635 # Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops
 636 # Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu
 637 # Heavy-handed way to also dump on warnings: --bootargs panic_on_warn