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 14scriptname=$0 15args="$*" 16 17T=${TMPDIR-/tmp}/kvm.sh.$$ 18trap 'rm -rf $T' 0 19mkdir $T 20 21cd `dirname $scriptname`/../../../../../ 22 23# This script knows only English. 24LANG=en_US.UTF-8; export LANG 25 26dur=$((30*60)) 27dryrun="" 28KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM 29PATH=${KVM}/bin:$PATH; export PATH 30. functions.sh 31 32TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`" 33TORTURE_DEFCONFIG=defconfig 34TORTURE_BOOT_IMAGE="" 35TORTURE_BUILDONLY= 36TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD 37TORTURE_KCONFIG_ARG="" 38TORTURE_KCONFIG_GDB_ARG="" 39TORTURE_BOOT_GDB_ARG="" 40TORTURE_QEMU_GDB_ARG="" 41TORTURE_JITTER_START="" 42TORTURE_JITTER_STOP="" 43TORTURE_KCONFIG_KASAN_ARG="" 44TORTURE_KCONFIG_KCSAN_ARG="" 45TORTURE_KMAKE_ARG="" 46TORTURE_QEMU_MEM=512 47TORTURE_REMOTE= 48TORTURE_SHUTDOWN_GRACE=180 49TORTURE_SUITE=rcu 50TORTURE_MOD=rcutorture 51TORTURE_TRUST_MAKE="" 52resdir="" 53configs="" 54cpus=0 55ds=`date +%Y.%m.%d-%H.%M.%S` 56jitter="-1" 57 58startdate="`date`" 59starttime="`get_starttime`" 60 61usage () { 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 91while test $# -gt 0 92do 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 $1 248 usage 249 ;; 250 esac 251 shift 252done 253 254if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh 255then 256 : 257else 258 echo No initrd and unable to create one, aborting test >&2 259 exit 1 260fi 261 262CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG 263 264defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`" 265if test -z "$configs" 266then 267 configs=$defaultconfigs 268fi 269 270if test -z "$resdir" 271then 272 resdir=$KVM/res 273fi 274 275# Create a file of test-name/#cpus pairs, sorted by decreasing #cpus. 276configs_derep= 277for CF in $configs 278do 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 293done 294touch $T/cfgcpu 295configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`" 296if test -n "$TORTURE_KCONFIG_GDB_ARG" 297then 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 304fi 305echo 'BEGIN {' > $T/cfgcpu.awk 306for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u` 307do 308 if test -f "$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 324done 325cat << '___EOF___' >> $T/cfgcpu.awk 326} 327{ 328 for (i = 1; i <= NF; i++) 329 print $i, scenariocpu[$i]; 330} 331___EOF___ 332echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu 333sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort 334 335# Use a greedy bin-packing algorithm, sorting the list accordingly. 336awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus ' 337BEGIN { 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 348END { 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. 384cat << ___EOF___ > $T/script 385CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG 386KVM="$KVM"; export KVM 387PATH="$PATH"; export PATH 388TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS 389TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE 390TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY 391TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG 392TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD 393TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG 394TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG 395TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG 396TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG 397TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG 398TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG 399TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG 400TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD 401TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD 402TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE 403TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC 404TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM 405TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE 406TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE 407TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE 408if ! test -e $resdir 409then 410 mkdir -p "$resdir" || : 411fi 412mkdir -p $resdir/$ds 413TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR 414TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE 415echo Results directory: $resdir/$ds 416echo $scriptname $args 417touch $resdir/$ds/log 418echo $scriptname $args >> $resdir/$ds/log 419echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite 420echo Build directory: `pwd` > $resdir/$ds/testid.txt 421if test -d .git 422then 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 431fi 432___EOF___ 433kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk 434kvm-get-cpus-script.sh $T/cpuarray.awk $T/dumpbatches.awk 435cat << '___EOF___' >> $T/dumpbatches.awk 436BEGIN { 437 i = 0; 438} 439 440{ 441 cf[i] = $1; 442 cpus[i] = $2; 443 i++; 444} 445 446# Dump out the scripting required to run one test batch. 447function dump(first, pastlast, batchnum, affinitylist) 448{ 449 print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log"; 450 print "needqemurun=" 451 jn=1 452 njitter = 0; 453 split(jitter, ja); 454 if (ja[1] == -1 && ncpus == 0) 455 njitter = 1; 456 else if (ja[1] == -1) 457 njitter = ncpus; 458 else 459 njitter = ja[1]; 460 print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START"; 461 print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP" 462 for (j = first; j < pastlast; j++) { 463 cpusr[jn] = cpus[j]; 464 if (cfrep[cf[j]] == "") { 465 cfr[jn] = cf[j]; 466 cfrep[cf[j]] = 1; 467 } else { 468 cfrep[cf[j]]++; 469 cfr[jn] = cf[j] "." cfrep[cf[j]]; 470 } 471 builddir=rd cfr[jn] "/build"; 472 if (cpusr[jn] > ncpus && ncpus != 0) 473 ovf = "-ovf"; 474 else 475 ovf = ""; 476 print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log"; 477 print "mkdir " rd cfr[jn] " || :"; 478 print "touch " builddir ".wait"; 479 affinitylist = ""; 480 if (gotcpus()) { 481 affinitylist = nextcpus(cpusr[jn]); 482 } 483 if (affinitylist ~ /^[0-9,-][0-9,-]*$/) 484 print "export TORTURE_AFFINITY=" affinitylist; 485 else 486 print "export TORTURE_AFFINITY="; 487 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 &" 488 print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log"; 489 print "while test -f " builddir ".wait" 490 print "do" 491 print "\tsleep 1" 492 print "done" 493 print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log"; 494 jn++; 495 } 496 print "runfiles=" 497 for (j = 1; j < jn; j++) { 498 builddir=rd cfr[j] "/build"; 499 if (TORTURE_BUILDONLY) 500 print "rm -f " builddir ".ready" 501 else 502 print "mv " builddir ".ready " builddir ".run" 503 print "runfiles=\"$runfiles " builddir ".run\"" 504 fi 505 print "if test -f \"" rd cfr[j] "/builtkernel\"" 506 print "then" 507 print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log"; 508 print "\tneedqemurun=1" 509 print "fi" 510 } 511 if (TORTURE_BUILDONLY && njitter != 0) { 512 njitter = 0; 513 print "echo Build-only run, so suppressing jitter | tee -a " rd "log" 514 } 515 if (TORTURE_BUILDONLY) { 516 print "needqemurun=" 517 } 518 print "if test -n \"$needqemurun\"" 519 print "then" 520 print "\techo ---- Starting kernels. `date` | tee -a " rd "log"; 521 print "\t$TORTURE_JITTER_START"; 522 print "\twhile ls $runfiles > /dev/null 2>&1" 523 print "\tdo" 524 print "\t\t:" 525 print "\tdone" 526 print "\t$TORTURE_JITTER_STOP"; 527 print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log"; 528 print "else" 529 print "\twait" 530 print "\techo ---- No kernel runs. `date` | tee -a " rd "log"; 531 print "fi" 532 for (j = 1; j < jn; j++) { 533 print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log"; 534 print "cat " rd cfr[j] "/kvm-test-1-run.sh.out | tee -a " rd "log"; 535 } 536} 537 538END { 539 njobs = i; 540 nc = ncpus; 541 first = 0; 542 batchnum = 1; 543 544 # Each pass through the following loop considers one test. 545 for (i = 0; i < njobs; i++) { 546 if (ncpus == 0) { 547 # Sequential test specified, each test its own batch. 548 dump(i, i + 1, batchnum); 549 first = i; 550 batchnum++; 551 } else if (nc < cpus[i] && i != 0) { 552 # Out of CPUs, dump out a batch. 553 dump(first, i, batchnum); 554 first = i; 555 nc = ncpus; 556 batchnum++; 557 } 558 # Account for the CPUs needed by the current test. 559 nc -= cpus[i]; 560 } 561 # Dump the last batch. 562 if (ncpus != 0) 563 dump(first, i, batchnum); 564} 565___EOF___ 566awk < $T/cfgcpu.pack \ 567 -v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \ 568 -v CONFIGDIR="$CONFIGFRAG/" \ 569 -v KVM="$KVM" \ 570 -v ncpus=$cpus \ 571 -v jitter="$jitter" \ 572 -v rd=$resdir/$ds/ \ 573 -v dur=$dur \ 574 -v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \ 575 -v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \ 576 -f $T/dumpbatches.awk >> $T/script 577echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script 578 579# Extract the tests and their batches from the script. 580egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" | 581 sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' | 582 awk ' 583 /^----Start/ { 584 batchno = $3; 585 next; 586 } 587 { 588 print batchno, $1, $2 589 }' > $T/batches 590 591# As above, but one line per batch. 592grep -v '^#' $T/batches | awk ' 593BEGIN { 594 oldbatch = 1; 595} 596 597{ 598 if (oldbatch != $1) { 599 print ++n ". " curbatch; 600 curbatch = ""; 601 oldbatch = $1; 602 } 603 curbatch = curbatch " " $2; 604} 605 606END { 607 print ++n ". " curbatch; 608}' > $T/scenarios 609 610if test "$dryrun" = script 611then 612 cat $T/script 613 exit 0 614elif test "$dryrun" = sched 615then 616 # Extract the test run schedule from the script. 617 egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" | 618 sed -e 's/:.*$//' -e 's/^echo //' 619 nbuilds="`grep 'Starting build\.' $T/script | 620 grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' | 621 awk '{ print $1 }' | grep -v '\.' | wc -l`" 622 echo Total number of builds: $nbuilds 623 nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`" 624 echo Total number of batches: $nbatches 625 exit 0 626elif test "$dryrun" = batches 627then 628 cat $T/batches 629 exit 0 630elif test "$dryrun" = scenarios 631then 632 cat $T/scenarios 633 exit 0 634else 635 # Not a dryrun. Record the batches and the number of CPUs, then run the script. 636 bash $T/script 637 ret=$? 638 cp $T/batches $resdir/$ds/batches 639 cp $T/scenarios $resdir/$ds/scenarios 640 echo '#' cpus=$cpus >> $resdir/$ds/batches 641 exit $ret 642fi 643 644# 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 645# Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop 646# Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y" 647# Control buffer size: --bootargs trace_buf_size=3k 648# Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops 649# Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu 650# Heavy-handed way to also dump on warnings: --bootargs panic_on_warn 651