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

   1 #!/bin/bash
   2 #
   3 # Run a series of 14 tests under KVM.  These are not particularly
   4 # well-selected or well-tuned, but are the current set.  Run from the
   5 # top level of the source tree.
   6 #
   7 # Edit the definitions below to set the locations of the various directories,
   8 # as well as the test duration.
   9 #
  10 # Usage: sh kvm.sh [ options ]
  11 #
  12 # This program is free software; you can redistribute it and/or modify
  13 # it under the terms of the GNU General Public License as published by
  14 # the Free Software Foundation; either version 2 of the License, or
  15 # (at your option) any later version.
  16 #
  17 # This program is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21 #
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program; if not, you can access it online at
  24 # http://www.gnu.org/licenses/gpl-2.0.html.
  25 #
  26 # Copyright (C) IBM Corporation, 2011
  27 #
  28 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
  29
  30 scriptname=$0
  31 args="$*"
  32
  33 T=/tmp/kvm.sh.$$
  34 trap 'rm -rf $T' 0
  35 mkdir $T
  36
  37 dur=30
  38 dryrun=""
  39 KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
  40 PATH=${KVM}/bin:$PATH; export PATH
  41 builddir="${KVM}/b1"
  42 RCU_INITRD="$KVM/initrd"; export RCU_INITRD
  43 RCU_KMAKE_ARG=""; export RCU_KMAKE_ARG
  44 TORTURE_SUITE=rcu
  45 resdir=""
  46 configs=""
  47 cpus=0
  48 ds=`date +%Y.%m.%d-%H:%M:%S`
  49 kversion=""
  50
  51 . functions.sh
  52
  53 usage () {
  54         echo "Usage: $scriptname optional arguments:"
  55         echo "       --bootargs kernel-boot-arguments"
  56         echo "       --builddir absolute-pathname"
  57         echo "       --buildonly"
  58         echo "       --configs \"config-file list\""
  59         echo "       --cpus N"
  60         echo "       --datestamp string"
  61         echo "       --dryrun sched|script"
  62         echo "       --duration minutes"
  63         echo "       --interactive"
  64         echo "       --kmake-arg kernel-make-arguments"
  65         echo "       --kversion vN.NN"
  66         echo "       --mac nn:nn:nn:nn:nn:nn"
  67         echo "       --no-initrd"
  68         echo "       --qemu-args qemu-system-..."
  69         echo "       --qemu-cmd qemu-system-..."
  70         echo "       --relbuilddir relative-pathname"
  71         echo "       --results absolute-pathname"
  72         echo "       --torture rcu"
  73         exit 1
  74 }
  75
  76 while test $# -gt 0
  77 do
  78         case "$1" in
  79         --bootargs)
  80                 checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
  81                 RCU_BOOTARGS="$2"
  82                 shift
  83                 ;;
  84         --builddir)
  85                 checkarg --builddir "(absolute pathname)" "$#" "$2" '^/' '^error'
  86                 builddir=$2
  87                 gotbuilddir=1
  88                 shift
  89                 ;;
  90         --buildonly)
  91                 RCU_BUILDONLY=1; export RCU_BUILDONLY
  92                 ;;
  93         --configs)
  94                 checkarg --configs "(list of config files)" "$#" "$2" '^[^/]*$' '^--'
  95                 configs="$2"
  96                 shift
  97                 ;;
  98         --cpus)
  99                 checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
 100                 cpus=$2
 101                 shift
 102                 ;;
 103         --datestamp)
 104                 checkarg --datestamp "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
 105                 ds=$2
 106                 shift
 107                 ;;
 108         --dryrun)
 109                 checkarg --dryrun "sched|script" $# "$2" 'sched\|script' '^--'
 110                 dryrun=$2
 111                 shift
 112                 ;;
 113         --duration)
 114                 checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' '^error'
 115                 dur=$2
 116                 shift
 117                 ;;
 118         --interactive)
 119                 RCU_QEMU_INTERACTIVE=1; export RCU_QEMU_INTERACTIVE
 120                 ;;
 121         --kmake-arg)
 122                 checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
 123                 RCU_KMAKE_ARG="$2"; export RCU_KMAKE_ARG
 124                 shift
 125                 ;;
 126         --kversion)
 127                 checkarg --kversion "(kernel version)" $# "$2" '^v[0-9.]*$' '^error'
 128                 kversion=$2
 129                 shift
 130                 ;;
 131         --mac)
 132                 checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
 133                 RCU_QEMU_MAC=$2; export RCU_QEMU_MAC
 134                 shift
 135                 ;;
 136         --no-initrd)
 137                 RCU_INITRD=""; export RCU_INITRD
 138                 ;;
 139         --qemu-args)
 140                 checkarg --qemu-args "-qemu args" $# "$2" '^-' '^error'
 141                 RCU_QEMU_ARG="$2"
 142                 shift
 143                 ;;
 144         --qemu-cmd)
 145                 checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
 146                 RCU_QEMU_CMD="$2"; export RCU_QEMU_CMD
 147                 shift
 148                 ;;
 149         --relbuilddir)
 150                 checkarg --relbuilddir "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
 151                 relbuilddir=$2
 152                 gotrelbuilddir=1
 153                 builddir=${KVM}/${relbuilddir}
 154                 shift
 155                 ;;
 156         --results)
 157                 checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
 158                 resdir=$2
 159                 shift
 160                 ;;
 161         --torture)
 162                 checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\)$' '^--'
 163                 TORTURE_SUITE=$2
 164                 shift
 165                 ;;
 166         *)
 167                 echo Unknown argument $1
 168                 usage
 169                 ;;
 170         esac
 171         shift
 172 done
 173
 174 CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
 175 KVPATH=${CONFIGFRAG}/$kversion; export KVPATH
 176
 177 if test -z "$configs"
 178 then
 179         configs="`cat $CONFIGFRAG/$kversion/CFLIST`"
 180 fi
 181
 182 if test -z "$resdir"
 183 then
 184         resdir=$KVM/res
 185 fi
 186
 187 if test "$dryrun" = ""
 188 then
 189         if ! test -e $resdir
 190         then
 191                 mkdir -p "$resdir" || :
 192         fi
 193         mkdir $resdir/$ds
 194
 195         # Be noisy only if running the script.
 196         echo Results directory: $resdir/$ds
 197         echo $scriptname $args
 198
 199         touch $resdir/$ds/log
 200         echo $scriptname $args >> $resdir/$ds/log
 201         echo ${TORTURE_SUITE} > $resdir/$ds/TORTURE_SUITE
 202
 203         pwd > $resdir/$ds/testid.txt
 204         if test -d .git
 205         then
 206                 git status >> $resdir/$ds/testid.txt
 207                 git rev-parse HEAD >> $resdir/$ds/testid.txt
 208         fi
 209 fi
 210
 211 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
 212 touch $T/cfgcpu
 213 for CF in $configs
 214 do
 215         if test -f "$CONFIGFRAG/$kversion/$CF"
 216         then
 217                 echo $CF `configNR_CPUS.sh $CONFIGFRAG/$kversion/$CF` >> $T/cfgcpu
 218         else
 219                 echo "The --configs file $CF does not exist, terminating."
 220                 exit 1
 221         fi
 222 done
 223 sort -k2nr $T/cfgcpu > $T/cfgcpu.sort
 224
 225 # Use a greedy bin-packing algorithm, sorting the list accordingly.
 226 awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
 227 BEGIN {
 228         njobs = 0;
 229 }
 230
 231 {
 232         # Read file of tests and corresponding required numbers of CPUs.
 233         cf[njobs] = $1;
 234         cpus[njobs] = $2;
 235         njobs++;
 236 }
 237
 238 END {
 239         alldone = 0;
 240         batch = 0;
 241         nc = -1;
 242
 243         # Each pass through the following loop creates on test batch
 244         # that can be executed concurrently given ncpus.  Note that a
 245         # given test that requires more than the available CPUs will run in
 246         # their own batch.  Such tests just have to make do with what
 247         # is available.
 248         while (nc != ncpus) {
 249                 batch++;
 250                 nc = ncpus;
 251
 252                 # Each pass through the following loop considers one
 253                 # test for inclusion in the current batch.
 254                 for (i = 0; i < njobs; i++) {
 255                         if (done[i])
 256                                 continue; # Already part of a batch.
 257                         if (nc >= cpus[i] || nc == ncpus) {
 258
 259                                 # This test fits into the current batch.
 260                                 done[i] = batch;
 261                                 nc -= cpus[i];
 262                                 if (nc <= 0)
 263                                         break; # Too-big test in its own batch.
 264                         }
 265                 }
 266         }
 267
 268         # Dump out the tests in batch order.
 269         for (b = 1; b <= batch; b++)
 270                 for (i = 0; i < njobs; i++)
 271                         if (done[i] == b)
 272                                 print cf[i], cpus[i];
 273 }'
 274
 275 # Generate a script to execute the tests in appropriate batches.
 276 cat << ___EOF___ > $T/script
 277 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
 278 ___EOF___
 279 awk < $T/cfgcpu.pack \
 280         -v CONFIGDIR="$CONFIGFRAG/$kversion/" \
 281         -v KVM="$KVM" \
 282         -v ncpus=$cpus \
 283         -v rd=$resdir/$ds/ \
 284         -v dur=$dur \
 285         -v RCU_QEMU_ARG=$RCU_QEMU_ARG \
 286         -v RCU_BOOTARGS=$RCU_BOOTARGS \
 287 'BEGIN {
 288         i = 0;
 289 }
 290
 291 {
 292         cf[i] = $1;
 293         cpus[i] = $2;
 294         i++;
 295 }
 296
 297 # Dump out the scripting required to run one test batch.
 298 function dump(first, pastlast)
 299 {
 300         print "echo ----Start batch: `date`";
 301         print "echo ----Start batch: `date` >> " rd "/log";
 302         jn=1
 303         for (j = first; j < pastlast; j++) {
 304                 builddir=KVM "/b" jn
 305                 cpusr[jn] = cpus[j];
 306                 if (cfrep[cf[j]] == "") {
 307                         cfr[jn] = cf[j];
 308                         cfrep[cf[j]] = 1;
 309                 } else {
 310                         cfrep[cf[j]]++;
 311                         cfr[jn] = cf[j] "." cfrep[cf[j]];
 312                 }
 313                 if (cpusr[jn] > ncpus && ncpus != 0)
 314                         ovf = "(!)";
 315                 else
 316                         ovf = "";
 317                 print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date`";
 318                 print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` >> " rd "/log";
 319                 print "rm -f " builddir ".*";
 320                 print "touch " builddir ".wait";
 321                 print "mkdir " builddir " > /dev/null 2>&1 || :";
 322                 print "mkdir " rd cfr[jn] " || :";
 323                 print "kvm-test-1-run.sh " CONFIGDIR cf[j], builddir, rd cfr[jn], dur " \"" RCU_QEMU_ARG "\" \"" RCU_BOOTARGS "\" > " rd cfr[jn]  "/kvm-test-1-run.sh.out 2>&1 &"
 324                 print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date`";
 325                 print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` >> " rd "/log";
 326                 print "while test -f " builddir ".wait"
 327                 print "do"
 328                 print "\tsleep 1"
 329                 print "done"
 330                 print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date`";
 331                 print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` >> " rd "/log";
 332                 jn++;
 333         }
 334         for (j = 1; j < jn; j++) {
 335                 builddir=KVM "/b" j
 336                 print "rm -f " builddir ".ready"
 337                 print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date`";
 338                 print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date` >> " rd "/log";
 339         }
 340         print "wait"
 341         print "echo ---- All kernel runs complete. `date`";
 342         print "echo ---- All kernel runs complete. `date` >> " rd "/log";
 343         for (j = 1; j < jn; j++) {
 344                 builddir=KVM "/b" j
 345                 print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results:";
 346                 print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: >> " rd "/log";
 347                 print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out";
 348                 print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out >> " rd "/log";
 349         }
 350 }
 351
 352 END {
 353         njobs = i;
 354         nc = ncpus;
 355         first = 0;
 356
 357         # Each pass through the following loop considers one test.
 358         for (i = 0; i < njobs; i++) {
 359                 if (ncpus == 0) {
 360                         # Sequential test specified, each test its own batch.
 361                         dump(i, i + 1);
 362                         first = i;
 363                 } else if (nc < cpus[i] && i != 0) {
 364                         # Out of CPUs, dump out a batch.
 365                         dump(first, i);
 366                         first = i;
 367                         nc = ncpus;
 368                 }
 369                 # Account for the CPUs needed by the current test.
 370                 nc -= cpus[i];
 371         }
 372         # Dump the last batch.
 373         if (ncpus != 0)
 374                 dump(first, i);
 375 }' >> $T/script
 376
 377 if test "$dryrun" = script
 378 then
 379         # Dump out the script, but define the environment variables that
 380         # it needs to run standalone.
 381         echo CONFIGFRAG="$CONFIGFRAG; export CONFIGFRAG"
 382         echo KVM="$KVM; export KVM"
 383         echo KVPATH="$KVPATH; export KVPATH"
 384         echo PATH="$PATH; export PATH"
 385         echo RCU_BUILDONLY="$RCU_BUILDONLY; export RCU_BUILDONLY"
 386         echo RCU_INITRD="$RCU_INITRD; export RCU_INITRD"
 387         echo RCU_KMAKE_ARG="$RCU_KMAKE_ARG; export RCU_KMAKE_ARG"
 388         echo RCU_QEMU_CMD="$RCU_QEMU_CMD; export RCU_QEMU_CMD"
 389         echo RCU_QEMU_INTERACTIVE="$RCU_QEMU_INTERACTIVE; export RCU_QEMU_INTERACTIVE"
 390         echo RCU_QEMU_MAC="$RCU_QEMU_MAC; export RCU_QEMU_MAC"
 391         echo "mkdir -p "$resdir" || :"
 392         echo "mkdir $resdir/$ds"
 393         cat $T/script
 394         exit 0
 395 elif test "$dryrun" = sched
 396 then
 397         # Extract the test run schedule from the script.
 398         egrep 'start batch|Starting build\.' $T/script |
 399                 sed -e 's/:.*$//' -e 's/^echo //'
 400         exit 0
 401 else
 402         # Not a dryru, so run the script.
 403         sh $T/script
 404 fi
 405
 406 # 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
 407
 408 echo
 409 echo
 410 echo " --- `date` Test summary:"
 411 echo Results directory: $resdir/$ds
 412 kvm-recheck.sh $resdir/$ds