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="`mktemp -d ${TMPDIR-/tmp}/kvm.sh.XXXXXX`"
  18 trap 'rm -rf $T' 0
  19
  20 cd `dirname $scriptname`/../../../../../
  21
  22 # This script knows only English.
  23 LANG=en_US.UTF-8; export LANG
  24
  25 dur=$((30*60))
  26 dryrun=""
  27 RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
  28 PATH=${RCUTORTURE}/bin:$PATH; export PATH
  29 . functions.sh
  30
  31 TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
  32 TORTURE_DEFCONFIG=defconfig
  33 TORTURE_BOOT_IMAGE=""
  34 TORTURE_BUILDONLY=
  35 TORTURE_INITRD="$RCUTORTURE/initrd"; export TORTURE_INITRD
  36 TORTURE_KCONFIG_ARG=""
  37 TORTURE_KCONFIG_GDB_ARG=""
  38 TORTURE_BOOT_GDB_ARG=""
  39 TORTURE_QEMU_GDB_ARG=""
  40 TORTURE_JITTER_START=""
  41 TORTURE_JITTER_STOP=""
  42 TORTURE_KCONFIG_KASAN_ARG=""
  43 TORTURE_KCONFIG_KCSAN_ARG=""
  44 TORTURE_KMAKE_ARG=""
  45 TORTURE_NO_AFFINITY=""
  46 TORTURE_QEMU_MEM=512
  47 torture_qemu_mem_default=1
  48 TORTURE_REMOTE=
  49 TORTURE_SHUTDOWN_GRACE=180
  50 TORTURE_SUITE=rcu
  51 TORTURE_MOD=rcutorture
  52 TORTURE_TRUST_MAKE=""
  53 debuginfo="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y"
  54 resdir=""
  55 configs=""
  56 cpus=0
  57 ds=`date +%Y.%m.%d-%H.%M.%S`
  58 jitter="-1"
  59
  60 startdate="`date`"
  61 starttime="`get_starttime`"
  62
  63 usage () {
  64         echo "Usage: $scriptname optional arguments:"
  65         echo "       --allcpus"
  66         echo "       --bootargs kernel-boot-arguments"
  67         echo "       --bootimage relative-path-to-kernel-boot-image"
  68         echo "       --buildonly"
  69         echo "       --configs \"config-file list w/ repeat factor (3*TINY01)\""
  70         echo "       --cpus N"
  71         echo "       --datestamp string"
  72         echo "       --defconfig string"
  73         echo "       --debug-info"
  74         echo "       --dryrun batches|scenarios|sched|script"
  75         echo "       --duration minutes | <seconds>s | <hours>h | <days>d"
  76         echo "       --gdb"
  77         echo "       --help"
  78         echo "       --interactive"
  79         echo "       --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
  80         echo "       --kasan"
  81         echo "       --kconfig Kconfig-options"
  82         echo "       --kcsan"
  83         echo "       --kmake-arg kernel-make-arguments"
  84         echo "       --mac nn:nn:nn:nn:nn:nn"
  85         echo "       --memory megabytes|nnnG"
  86         echo "       --no-affinity"
  87         echo "       --no-initrd"
  88         echo "       --qemu-args qemu-arguments"
  89         echo "       --qemu-cmd qemu-system-..."
  90         echo "       --remote"
  91         echo "       --results absolute-pathname"
  92         echo "       --shutdown-grace seconds"
  93         echo "       --torture lock|rcu|rcuscale|refscale|scf|X*"
  94         echo "       --trust-make"
  95         exit 1
  96 }
  97
  98 while test $# -gt 0
  99 do
 100         case "$1" in
 101         --allcpus)
 102                 cpus=$TORTURE_ALLOTED_CPUS
 103                 max_cpus=$TORTURE_ALLOTED_CPUS
 104                 ;;
 105         --bootargs|--bootarg)
 106                 checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
 107                 TORTURE_BOOTARGS="$TORTURE_BOOTARGS $2"
 108                 shift
 109                 ;;
 110         --bootimage)
 111                 checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
 112                 TORTURE_BOOT_IMAGE="$2"
 113                 shift
 114                 ;;
 115         --buildonly|--build-only)
 116                 TORTURE_BUILDONLY=1
 117                 ;;
 118         --configs|--config)
 119                 checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
 120                 configs="$configs $2"
 121                 shift
 122                 ;;
 123         --cpus)
 124                 checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
 125                 cpus=$2
 126                 TORTURE_ALLOTED_CPUS="$2"
 127                 if test -z "$TORTURE_REMOTE"
 128                 then
 129                         max_cpus="`identify_qemu_vcpus`"
 130                         if test "$TORTURE_ALLOTED_CPUS" -gt "$max_cpus"
 131                         then
 132                                 TORTURE_ALLOTED_CPUS=$max_cpus
 133                         fi
 134                 fi
 135                 shift
 136                 ;;
 137         --datestamp)
 138                 checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
 139                 ds=$2
 140                 shift
 141                 ;;
 142         --debug-info|--debuginfo)
 143                 if test -z "$TORTURE_KCONFIG_KCSAN_ARG" && test -z "$TORTURE_BOOT_GDB_ARG"
 144                 then
 145                         TORTURE_KCONFIG_KCSAN_ARG="$debuginfo"; export TORTURE_KCONFIG_KCSAN_ARG
 146                         TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
 147                 else
 148                         echo "Ignored redundant --debug-info (implied by --kcsan &c)"
 149                 fi
 150                 ;;
 151         --defconfig)
 152                 checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
 153                 TORTURE_DEFCONFIG=$2
 154                 shift
 155                 ;;
 156         --dryrun)
 157                 checkarg --dryrun "batches|sched|script" $# "$2" 'batches\|scenarios\|sched\|script' '^--'
 158                 dryrun=$2
 159                 shift
 160                 ;;
 161         --duration)
 162                 checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
 163                 mult=60
 164                 if echo "$2" | grep -q 's$'
 165                 then
 166                         mult=1
 167                 elif echo "$2" | grep -q 'h$'
 168                 then
 169                         mult=3600
 170                 elif echo "$2" | grep -q 'd$'
 171                 then
 172                         mult=86400
 173                 fi
 174                 ts=`echo $2 | sed -e 's/[smhd]$//'`
 175                 dur=$(($ts*mult))
 176                 shift
 177                 ;;
 178         --gdb)
 179                 TORTURE_KCONFIG_GDB_ARG="$debuginfo"; export TORTURE_KCONFIG_GDB_ARG
 180                 TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
 181                 TORTURE_QEMU_GDB_ARG="-s -S"; export TORTURE_QEMU_GDB_ARG
 182                 ;;
 183         --help|-h)
 184                 usage
 185                 ;;
 186         --interactive)
 187                 TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
 188                 ;;
 189         --jitter)
 190                 checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
 191                 jitter="$2"
 192                 shift
 193                 ;;
 194         --kasan)
 195                 TORTURE_KCONFIG_KASAN_ARG="$debuginfo CONFIG_KASAN=y"; export TORTURE_KCONFIG_KASAN_ARG
 196                 if test -n "$torture_qemu_mem_default"
 197                 then
 198                         TORTURE_QEMU_MEM=2G
 199                 fi
 200                 ;;
 201         --kconfig|--kconfigs)
 202                 checkarg --kconfig "(Kconfig options)" $# "$2" '^\(#CHECK#\)\?CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\|"[^"]*"\)\( \(#CHECK#\)\?CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\|"[^"]*"\)\)*$' '^error$'
 203                 TORTURE_KCONFIG_ARG="`echo "$TORTURE_KCONFIG_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 204                 shift
 205                 ;;
 206         --kcsan)
 207                 TORTURE_KCONFIG_KCSAN_ARG="$debuginfo CONFIG_KCSAN=y CONFIG_KCSAN_STRICT=y CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000 CONFIG_KCSAN_VERBOSE=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y"; export TORTURE_KCONFIG_KCSAN_ARG
 208                 ;;
 209         --kmake-arg|--kmake-args)
 210                 checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
 211                 TORTURE_KMAKE_ARG="`echo "$TORTURE_KMAKE_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 212                 shift
 213                 ;;
 214         --mac)
 215                 checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
 216                 TORTURE_QEMU_MAC=$2
 217                 shift
 218                 ;;
 219         --memory)
 220                 checkarg --memory "(memory size)" $# "$2" '^[0-9]\+[MG]\?$' error
 221                 TORTURE_QEMU_MEM=$2
 222                 torture_qemu_mem_default=
 223                 shift
 224                 ;;
 225         --no-affinity)
 226                 TORTURE_NO_AFFINITY="no-affinity"
 227                 ;;
 228         --no-initrd)
 229                 TORTURE_INITRD=""; export TORTURE_INITRD
 230                 ;;
 231         --qemu-args|--qemu-arg)
 232                 checkarg --qemu-args "(qemu arguments)" $# "$2" '^-' '^error'
 233                 TORTURE_QEMU_ARG="`echo "$TORTURE_QEMU_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
 234                 shift
 235                 ;;
 236         --qemu-cmd)
 237                 checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
 238                 TORTURE_QEMU_CMD="$2"
 239                 shift
 240                 ;;
 241         --remote)
 242                 TORTURE_REMOTE=1
 243                 ;;
 244         --results)
 245                 checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
 246                 resdir=$2
 247                 shift
 248                 ;;
 249         --shutdown-grace)
 250                 checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
 251                 TORTURE_SHUTDOWN_GRACE=$2
 252                 shift
 253                 ;;
 254         --torture)
 255                 checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
 256                 TORTURE_SUITE=$2
 257                 TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
 258                 shift
 259                 if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
 260                 then
 261                         # If you really want jitter for refscale or
 262                         # rcuscale, specify it after specifying the rcuscale
 263                         # or the refscale.  (But why jitter in these cases?)
 264                         jitter=0
 265                 fi
 266                 ;;
 267         --trust-make)
 268                 TORTURE_TRUST_MAKE="y"
 269                 ;;
 270         *)
 271                 echo Unknown argument $1
 272                 usage
 273                 ;;
 274         esac
 275         shift
 276 done
 277
 278 if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh
 279 then
 280         :
 281 else
 282         echo No initrd and unable to create one, aborting test >&2
 283         exit 1
 284 fi
 285
 286 CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG
 287
 288 defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
 289 if test -z "$configs"
 290 then
 291         configs=$defaultconfigs
 292 fi
 293
 294 if test -z "$resdir"
 295 then
 296         resdir=$RCUTORTURE/res
 297 fi
 298
 299 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
 300 configs_derep=
 301 for CF in $configs
 302 do
 303         case $CF in
 304         [0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**|[0-9][0-9][0-9][0-9]\**)
 305                 config_reps=`echo $CF | sed -e 's/\*.*$//'`
 306                 CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
 307                 ;;
 308         *)
 309                 config_reps=1
 310                 CF1=$CF
 311                 ;;
 312         esac
 313         for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
 314         do
 315                 configs_derep="$configs_derep $CF1"
 316         done
 317 done
 318 touch $T/cfgcpu
 319 configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
 320 if test -n "$TORTURE_KCONFIG_GDB_ARG"
 321 then
 322         if test "`echo $configs_derep | wc -w`" -gt 1
 323         then
 324                 echo "The --config list is: $configs_derep."
 325                 echo "Only one --config permitted with --gdb, terminating."
 326                 exit 1
 327         fi
 328 fi
 329 echo 'BEGIN {' > $T/cfgcpu.awk
 330 for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
 331 do
 332         if test -f "$CONFIGFRAG/$CF1"
 333         then
 334                 if echo "$TORTURE_KCONFIG_ARG" | grep -q '\<CONFIG_NR_CPUS='
 335                 then
 336                         echo "$TORTURE_KCONFIG_ARG" | tr -s ' ' | tr ' ' '\012' > $T/KCONFIG_ARG
 337                         cpu_count=`configNR_CPUS.sh $T/KCONFIG_ARG`
 338                 else
 339                         cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
 340                 fi
 341                 cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
 342                 cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
 343                 echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
 344         else
 345                 echo "The --configs file $CF1 does not exist, terminating."
 346                 exit 1
 347         fi
 348 done
 349 cat << '___EOF___' >> $T/cfgcpu.awk
 350 }
 351 {
 352         for (i = 1; i <= NF; i++)
 353                 print $i, scenariocpu[$i];
 354 }
 355 ___EOF___
 356 echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
 357 sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
 358
 359 # Use a greedy bin-packing algorithm, sorting the list accordingly.
 360 awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
 361 BEGIN {
 362         njobs = 0;
 363 }
 364
 365 {
 366         # Read file of tests and corresponding required numbers of CPUs.
 367         cf[njobs] = $1;
 368         cpus[njobs] = $2;
 369         njobs++;
 370 }
 371
 372 END {
 373         batch = 0;
 374         nc = -1;
 375
 376         # Each pass through the following loop creates on test batch that
 377         # can be executed concurrently given ncpus.  Note that a given test
 378         # that requires more than the available CPUs will run in its own
 379         # batch.  Such tests just have to make do with what is available.
 380         while (nc != ncpus) {
 381                 batch++;
 382                 nc = ncpus;
 383
 384                 # Each pass through the following loop considers one
 385                 # test for inclusion in the current batch.
 386                 for (i = 0; i < njobs; i++) {
 387                         if (done[i])
 388                                 continue; # Already part of a batch.
 389                         if (nc >= cpus[i] || nc == ncpus) {
 390
 391                                 # This test fits into the current batch.
 392                                 done[i] = batch;
 393                                 nc -= cpus[i];
 394                                 if (nc <= 0)
 395                                         break; # Too-big test in its own batch.
 396                         }
 397                 }
 398         }
 399
 400         # Dump out the tests in batch order.
 401         for (b = 1; b <= batch; b++)
 402                 for (i = 0; i < njobs; i++)
 403                         if (done[i] == b)
 404                                 print cf[i], cpus[i];
 405 }'
 406
 407 # Generate a script to execute the tests in appropriate batches.
 408 cat << ___EOF___ > $T/script
 409 CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
 410 RCUTORTURE="$RCUTORTURE"; export RCUTORTURE
 411 PATH="$PATH"; export PATH
 412 TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
 413 TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
 414 TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
 415 TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
 416 TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
 417 TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
 418 TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG
 419 TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG
 420 TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG
 421 TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG
 422 TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG
 423 TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
 424 TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD
 425 TORTURE_NO_AFFINITY="$TORTURE_NO_AFFINITY"; export TORTURE_NO_AFFINITY
 426 TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
 427 TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
 428 TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
 429 TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM
 430 TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
 431 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
 432 TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE
 433 if ! test -e $resdir
 434 then
 435         mkdir -p "$resdir" || :
 436 fi
 437 mkdir -p $resdir/$ds
 438 TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR
 439 TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE
 440 echo Results directory: $resdir/$ds
 441 echo $scriptname $args
 442 touch $resdir/$ds/log
 443 echo $scriptname $args >> $resdir/$ds/log
 444 echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite
 445 echo Build directory: `pwd` > $resdir/$ds/testid.txt
 446 if test -d .git
 447 then
 448         echo Current commit: `git rev-parse HEAD` >> $resdir/$ds/testid.txt
 449         echo >> $resdir/$ds/testid.txt
 450         echo ' ---' Output of "'"git status"'": >> $resdir/$ds/testid.txt
 451         git status >> $resdir/$ds/testid.txt
 452         echo >> $resdir/$ds/testid.txt
 453         echo >> $resdir/$ds/testid.txt
 454         echo ' ---' Output of "'"git diff HEAD"'": >> $resdir/$ds/testid.txt
 455         git diff HEAD >> $resdir/$ds/testid.txt
 456 fi
 457 ___EOF___
 458 kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
 459 kvm-get-cpus-script.sh $T/cpuarray.awk $T/dumpbatches.awk
 460 cat << '___EOF___' >> $T/dumpbatches.awk
 461 BEGIN {
 462         i = 0;
 463 }
 464
 465 {
 466         cf[i] = $1;
 467         cpus[i] = $2;
 468         i++;
 469 }
 470
 471 # Dump out the scripting required to run one test batch.
 472 function dump(first, pastlast, batchnum,  affinitylist)
 473 {
 474         print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log";
 475         print "needqemurun="
 476         jn=1
 477         njitter = 0;
 478         split(jitter, ja);
 479         if (ja[1] == -1 && ncpus == 0)
 480                 njitter = 1;
 481         else if (ja[1] == -1)
 482                 njitter = ncpus;
 483         else
 484                 njitter = ja[1];
 485         print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START";
 486         print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP"
 487         for (j = first; j < pastlast; j++) {
 488                 cpusr[jn] = cpus[j];
 489                 if (cfrep[cf[j]] == "") {
 490                         cfr[jn] = cf[j];
 491                         cfrep[cf[j]] = 1;
 492                 } else {
 493                         cfrep[cf[j]]++;
 494                         cfr[jn] = cf[j] "." cfrep[cf[j]];
 495                 }
 496                 builddir=rd cfr[jn] "/build";
 497                 if (cpusr[jn] > ncpus && ncpus != 0)
 498                         ovf = "-ovf";
 499                 else
 500                         ovf = "";
 501                 print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log";
 502                 print "mkdir " rd cfr[jn] " || :";
 503                 print "touch " builddir ".wait";
 504                 affinitylist = "";
 505                 if (gotcpus()) {
 506                         affinitylist = nextcpus(cpusr[jn]);
 507                 }
 508                 if (affinitylist ~ /^[0-9,-][0-9,-]*$/)
 509                         print "export TORTURE_AFFINITY=" affinitylist;
 510                 else
 511                         print "export TORTURE_AFFINITY=";
 512                 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 &"
 513                 print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log";
 514                 print "while test -f " builddir ".wait"
 515                 print "do"
 516                 print "\tsleep 1"
 517                 print "done"
 518                 print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log";
 519                 jn++;
 520         }
 521         print "runfiles="
 522         for (j = 1; j < jn; j++) {
 523                 builddir=rd cfr[j] "/build";
 524                 if (TORTURE_BUILDONLY)
 525                         print "rm -f " builddir ".ready"
 526                 else
 527                         print "mv " builddir ".ready " builddir ".run"
 528                         print "runfiles=\"$runfiles " builddir ".run\""
 529                 fi
 530                 print "if test -f \"" rd cfr[j] "/builtkernel\""
 531                 print "then"
 532                 print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log";
 533                 print "\tneedqemurun=1"
 534                 print "fi"
 535         }
 536         if (TORTURE_BUILDONLY && njitter != 0) {
 537                 njitter = 0;
 538                 print "echo Build-only run, so suppressing jitter | tee -a " rd "log"
 539         }
 540         if (TORTURE_BUILDONLY) {
 541                 print "needqemurun="
 542         }
 543         print "if test -n \"$needqemurun\""
 544         print "then"
 545         print "\techo ---- Starting kernels. `date` | tee -a " rd "log";
 546         print "\t$TORTURE_JITTER_START";
 547         print "\twhile ls $runfiles > /dev/null 2>&1"
 548         print "\tdo"
 549         print "\t\t:"
 550         print "\tdone"
 551         print "\t$TORTURE_JITTER_STOP";
 552         print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log";
 553         print "else"
 554         print "\twait"
 555         print "\techo ---- No kernel runs. `date` | tee -a " rd "log";
 556         print "fi"
 557         for (j = 1; j < jn; j++) {
 558                 print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log";
 559                 print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out | tee -a " rd "log";
 560         }
 561 }
 562
 563 END {
 564         njobs = i;
 565         nc = ncpus;
 566         first = 0;
 567         batchnum = 1;
 568
 569         # Each pass through the following loop considers one test.
 570         for (i = 0; i < njobs; i++) {
 571                 if (ncpus == 0) {
 572                         # Sequential test specified, each test its own batch.
 573                         dump(i, i + 1, batchnum);
 574                         first = i;
 575                         batchnum++;
 576                 } else if (nc < cpus[i] && i != 0) {
 577                         # Out of CPUs, dump out a batch.
 578                         dump(first, i, batchnum);
 579                         first = i;
 580                         nc = ncpus;
 581                         batchnum++;
 582                 }
 583                 # Account for the CPUs needed by the current test.
 584                 nc -= cpus[i];
 585         }
 586         # Dump the last batch.
 587         if (ncpus != 0)
 588                 dump(first, i, batchnum);
 589 }
 590 ___EOF___
 591 awk < $T/cfgcpu.pack \
 592         -v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
 593         -v CONFIGDIR="$CONFIGFRAG/" \
 594         -v RCUTORTURE="$RCUTORTURE" \
 595         -v ncpus=$cpus \
 596         -v jitter="$jitter" \
 597         -v rd=$resdir/$ds/ \
 598         -v dur=$dur \
 599         -v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
 600         -v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
 601         -f $T/dumpbatches.awk >> $T/script
 602 echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script
 603
 604 # Extract the tests and their batches from the script.
 605 grep -E 'Start batch|Starting build\.' $T/script | grep -v ">>" |
 606         sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' |
 607         awk '
 608         /^----Start/ {
 609                 batchno = $3;
 610                 next;
 611         }
 612         {
 613                 print batchno, $1, $2
 614         }' > $T/batches
 615
 616 # As above, but one line per batch.
 617 grep -v '^#' $T/batches | awk '
 618 BEGIN {
 619         oldbatch = 1;
 620 }
 621
 622 {
 623         if (oldbatch != $1) {
 624                 print ++n ". " curbatch;
 625                 curbatch = "";
 626                 oldbatch = $1;
 627         }
 628         curbatch = curbatch " " $2;
 629 }
 630
 631 END {
 632         print ++n ". " curbatch;
 633 }' > $T/scenarios
 634
 635 if test "$dryrun" = script
 636 then
 637         cat $T/script
 638         exit 0
 639 elif test "$dryrun" = sched
 640 then
 641         # Extract the test run schedule from the script.
 642         grep -E 'Start batch|Starting build\.' $T/script | grep -v ">>" |
 643                 sed -e 's/:.*$//' -e 's/^echo //'
 644         nbuilds="`grep 'Starting build\.' $T/script |
 645                   grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' |
 646                   awk '{ print $1 }' | grep -v '\.' | wc -l`"
 647         echo Total number of builds: $nbuilds
 648         nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`"
 649         echo Total number of batches: $nbatches
 650         exit 0
 651 elif test "$dryrun" = batches
 652 then
 653         cat $T/batches
 654         exit 0
 655 elif test "$dryrun" = scenarios
 656 then
 657         cat $T/scenarios
 658         exit 0
 659 else
 660         # Not a dryrun.  Record the batches and the number of CPUs, then run the script.
 661         bash $T/script
 662         ret=$?
 663         cp $T/batches $resdir/$ds/batches
 664         cp $T/scenarios $resdir/$ds/scenarios
 665         echo '#' cpus=$cpus >> $resdir/$ds/batches
 666         exit $ret
 667 fi
 668
 669 # 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
 670 # Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop
 671 # Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y"
 672 # Control buffer size: --bootargs trace_buf_size=3k
 673 # Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops
 674 # Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu
 675 # Heavy-handed way to also dump on warnings: --bootargs panic_on_warn=1