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