tools/testing/selftests/rcutorture/bin/kvm.sh - arm/linux-arm64-legacy - Git at Google

 #!/bin/bash
 #
 # Run a series of 14 tests under KVM.  These are not particularly
 # well-selected or well-tuned, but are the current set.  Run from the
 # top level of the source tree.
 #
 # Edit the definitions below to set the locations of the various directories,
 # as well as the test duration.
 #
 # Usage: sh kvm.sh [ options ]
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, you can access it online at
 # http://www.gnu.org/licenses/gpl-2.0.html.
 #
 # Copyright (C) IBM Corporation, 2011
 #
 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

 scriptname=$0
 args="$*"

 T=/tmp/kvm.sh.$$
 trap 'rm -rf $T' 0
 mkdir $T

 dur=30
 dryrun=""
 KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
 PATH=${KVM}/bin:$PATH; export PATH
 TORTURE_DEFCONFIG=defconfig
 TORTURE_BOOT_IMAGE=""
 TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
 TORTURE_KMAKE_ARG=""
 TORTURE_SUITE=rcu
 resdir=""
 configs=""
 cpus=0
 ds=`date +%Y.%m.%d-%H:%M:%S`
 kversion=""

 . functions.sh

 usage () {
 	echo "Usage: $scriptname optional arguments:"
 	echo "       --bootargs kernel-boot-arguments"
 	echo "       --bootimage relative-path-to-kernel-boot-image"
 	echo "       --buildonly"
 	echo "       --configs \"config-file list\""
 	echo "       --cpus N"
 	echo "       --datestamp string"
 	echo "       --defconfig string"
 	echo "       --dryrun sched|script"
 	echo "       --duration minutes"
 	echo "       --interactive"
 	echo "       --kmake-arg kernel-make-arguments"
 	echo "       --kversion vN.NN"
 	echo "       --mac nn:nn:nn:nn:nn:nn"
 	echo "       --no-initrd"
 	echo "       --qemu-args qemu-system-..."
 	echo "       --qemu-cmd qemu-system-..."
 	echo "       --results absolute-pathname"
 	echo "       --torture rcu"
 	exit 1
 }

 while test $# -gt 0
 do
 	case "$1" in
 	--bootargs)
 		checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
 		TORTURE_BOOTARGS="$2"
 		shift
 		;;
 	--bootimage)
 		checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
 		TORTURE_BOOT_IMAGE="$2"
 		shift
 		;;
 	--buildonly)
 		TORTURE_BUILDONLY=1
 		;;
 	--configs)
 		checkarg --configs "(list of config files)" "$#" "$2" '^[^/]*$' '^--'
 		configs="$2"
 		shift
 		;;
 	--cpus)
 		checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
 		cpus=$2
 		shift
 		;;
 	--datestamp)
 		checkarg --datestamp "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
 		ds=$2
 		shift
 		;;
 	--defconfig)
 		checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
 		TORTURE_DEFCONFIG=$2
 		shift
 		;;
 	--dryrun)
 		checkarg --dryrun "sched|script" $# "$2" 'sched\|script' '^--'
 		dryrun=$2
 		shift
 		;;
 	--duration)
 		checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' '^error'
 		dur=$2
 		shift
 		;;
 	--interactive)
 		TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
 		;;
 	--kmake-arg)
 		checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
 		TORTURE_KMAKE_ARG="$2"
 		shift
 		;;
 	--kversion)
 		checkarg --kversion "(kernel version)" $# "$2" '^v[0-9.]*$' '^error'
 		kversion=$2
 		shift
 		;;
 	--mac)
 		checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
 		TORTURE_QEMU_MAC=$2
 		shift
 		;;
 	--no-initrd)
 		TORTURE_INITRD=""; export TORTURE_INITRD
 		;;
 	--qemu-args)
 		checkarg --qemu-args "-qemu args" $# "$2" '^-' '^error'
 		TORTURE_QEMU_ARG="$2"
 		shift
 		;;
 	--qemu-cmd)
 		checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
 		TORTURE_QEMU_CMD="$2"
 		shift
 		;;
 	--results)
 		checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
 		resdir=$2
 		shift
 		;;
 	--torture)
 		checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\)$' '^--'
 		TORTURE_SUITE=$2
 		shift
 		;;
 	*)
 		echo Unknown argument $1
 		usage
 		;;
 	esac
 	shift
 done

 CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
 KVPATH=${CONFIGFRAG}/$kversion; export KVPATH

 if test -z "$configs"
 then
 	configs="`cat $CONFIGFRAG/$kversion/CFLIST`"
 fi

 if test -z "$resdir"
 then
 	resdir=$KVM/res
 fi

 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
 touch $T/cfgcpu
 for CF in $configs
 do
 	if test -f "$CONFIGFRAG/$kversion/$CF"
 	then
 		echo $CF `configNR_CPUS.sh $CONFIGFRAG/$kversion/$CF` >> $T/cfgcpu
 	else
 		echo "The --configs file $CF does not exist, terminating."
 		exit 1
 	fi
 done
 sort -k2nr $T/cfgcpu > $T/cfgcpu.sort

 # Use a greedy bin-packing algorithm, sorting the list accordingly.
 awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
 BEGIN {
 	njobs = 0;
 }

 {
 	# Read file of tests and corresponding required numbers of CPUs.
 	cf[njobs] = $1;
 	cpus[njobs] = $2;
 	njobs++;
 }

 END {
 	alldone = 0;
 	batch = 0;
 	nc = -1;

 	# Each pass through the following loop creates on test batch
 	# that can be executed concurrently given ncpus.  Note that a
 	# given test that requires more than the available CPUs will run in
 	# their own batch.  Such tests just have to make do with what
 	# is available.
 	while (nc != ncpus) {
 		batch++;
 		nc = ncpus;

 		# Each pass through the following loop considers one
 		# test for inclusion in the current batch.
 		for (i = 0; i < njobs; i++) {
 			if (done[i])
 				continue; # Already part of a batch.
 			if (nc >= cpus[i] || nc == ncpus) {

 				# This test fits into the current batch.
 				done[i] = batch;
 				nc -= cpus[i];
 				if (nc <= 0)
 					break; # Too-big test in its own batch.
 			}
 		}
 	}

 	# Dump out the tests in batch order.
 	for (b = 1; b <= batch; b++)
 		for (i = 0; i < njobs; i++)
 			if (done[i] == b)
 				print cf[i], cpus[i];
 }'

 # Generate a script to execute the tests in appropriate batches.
 cat << ___EOF___ > $T/script
 CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
 KVM="$KVM"; export KVM
 KVPATH="$KVPATH"; export KVPATH
 PATH="$PATH"; export PATH
 TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
 TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
 TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
 TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
 TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
 TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
 TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
 TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
 if ! test -e $resdir
 then
 	mkdir -p "$resdir" || :
 fi
 mkdir $resdir/$ds
 echo Results directory: $resdir/$ds
 echo $scriptname $args
 touch $resdir/$ds/log
 echo $scriptname $args >> $resdir/$ds/log
 echo ${TORTURE_SUITE} > $resdir/$ds/TORTURE_SUITE
 pwd > $resdir/$ds/testid.txt
 if test -d .git
 then
 	git status >> $resdir/$ds/testid.txt
 	git rev-parse HEAD >> $resdir/$ds/testid.txt
 	if ! git diff HEAD > $T/git-diff 2>&1
 	then
 		cp $T/git-diff $resdir/$ds
 	fi
 fi
 ___EOF___
 awk < $T/cfgcpu.pack \
 	-v CONFIGDIR="$CONFIGFRAG/$kversion/" \
 	-v KVM="$KVM" \
 	-v ncpus=$cpus \
 	-v rd=$resdir/$ds/ \
 	-v dur=$dur \
 	-v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
 	-v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
 'BEGIN {
 	i = 0;
 }

 {
 	cf[i] = $1;
 	cpus[i] = $2;
 	i++;
 }

 # Dump out the scripting required to run one test batch.
 function dump(first, pastlast)
 {
 	print "echo ----Start batch: `date`";
 	print "echo ----Start batch: `date` >> " rd "/log";
 	jn=1
 	for (j = first; j < pastlast; j++) {
 		builddir=KVM "/b" jn
 		cpusr[jn] = cpus[j];
 		if (cfrep[cf[j]] == "") {
 			cfr[jn] = cf[j];
 			cfrep[cf[j]] = 1;
 		} else {
 			cfrep[cf[j]]++;
 			cfr[jn] = cf[j] "." cfrep[cf[j]];
 		}
 		if (cpusr[jn] > ncpus && ncpus != 0)
 			ovf = "(!)";
 		else
 			ovf = "";
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date`";
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` >> " rd "/log";
 		print "rm -f " builddir ".*";
 		print "touch " builddir ".wait";
 		print "mkdir " builddir " > /dev/null 2>&1 || :";
 		print "mkdir " rd cfr[jn] " || :";
 		print "kvm-test-1-run.sh " CONFIGDIR cf[j], builddir, rd cfr[jn], dur " \"" TORTURE_QEMU_ARG "\" \"" TORTURE_BOOTARGS "\" > " rd cfr[jn]  "/kvm-test-1-run.sh.out 2>&1 &"
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date`";
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` >> " rd "/log";
 		print "while test -f " builddir ".wait"
 		print "do"
 		print "\tsleep 1"
 		print "done"
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date`";
 		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` >> " rd "/log";
 		jn++;
 	}
 	for (j = 1; j < jn; j++) {
 		builddir=KVM "/b" j
 		print "rm -f " builddir ".ready"
 		print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date`";
 		print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date` >> " rd "/log";
 	}
 	print "wait"
 	print "echo ---- All kernel runs complete. `date`";
 	print "echo ---- All kernel runs complete. `date` >> " rd "/log";
 	for (j = 1; j < jn; j++) {
 		builddir=KVM "/b" j
 		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results:";
 		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: >> " rd "/log";
 		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out";
 		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out >> " rd "/log";
 	}
 }

 END {
 	njobs = i;
 	nc = ncpus;
 	first = 0;

 	# Each pass through the following loop considers one test.
 	for (i = 0; i < njobs; i++) {
 		if (ncpus == 0) {
 			# Sequential test specified, each test its own batch.
 			dump(i, i + 1);
 			first = i;
 		} else if (nc < cpus[i] && i != 0) {
 			# Out of CPUs, dump out a batch.
 			dump(first, i);
 			first = i;
 			nc = ncpus;
 		}
 		# Account for the CPUs needed by the current test.
 		nc -= cpus[i];
 	}
 	# Dump the last batch.
 	if (ncpus != 0)
 		dump(first, i);
 }' >> $T/script

 cat << ___EOF___ >> $T/script
 echo
 echo
 echo " --- `date` Test summary:"
 echo Results directory: $resdir/$ds
 if test -z "$TORTURE_BUILDONLY"
 then
 	kvm-recheck.sh $resdir/$ds
 fi
 ___EOF___

 if test "$dryrun" = script
 then
 	cat $T/script
 	exit 0
 elif test "$dryrun" = sched
 then
 	# Extract the test run schedule from the script.
 	egrep 'Start batch|Starting build\.' $T/script |
 		grep -v ">>" |
 		sed -e 's/:.*$//' -e 's/^echo //'
 	exit 0
 else
 	# Not a dryru, so run the script.
 	sh $T/script
 fi

 # 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
	#!/bin/bash
	#
	# Run a series of 14 tests under KVM. These are not particularly
	# well-selected or well-tuned, but are the current set. Run from the
	# top level of the source tree.
	#
	# Edit the definitions below to set the locations of the various directories,
	# as well as the test duration.
	#
	# Usage: sh kvm.sh [ options ]
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program; if not, you can access it online at
	# http://www.gnu.org/licenses/gpl-2.0.html.
	#
	# Copyright (C) IBM Corporation, 2011
	#
	# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

	scriptname=$0
	args="$*"

	T=/tmp/kvm.sh.$$
	trap 'rm -rf $T' 0
	mkdir $T

	dur=30
	dryrun=""
	KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM
	PATH=${KVM}/bin:$PATH; export PATH
	TORTURE_DEFCONFIG=defconfig
	TORTURE_BOOT_IMAGE=""
	TORTURE_INITRD="$KVM/initrd"; export TORTURE_INITRD
	TORTURE_KMAKE_ARG=""
	TORTURE_SUITE=rcu
	resdir=""
	configs=""
	cpus=0
	ds=`date +%Y.%m.%d-%H:%M:%S`
	kversion=""

	. functions.sh

	usage () {
	echo "Usage: $scriptname optional arguments:"
	echo " --bootargs kernel-boot-arguments"
	echo " --bootimage relative-path-to-kernel-boot-image"
	echo " --buildonly"
	echo " --configs \"config-file list\""
	echo " --cpus N"
	echo " --datestamp string"
	echo " --defconfig string"
	echo " --dryrun sched\|script"
	echo " --duration minutes"
	echo " --interactive"
	echo " --kmake-arg kernel-make-arguments"
	echo " --kversion vN.NN"
	echo " --mac nn:nn:nn:nn:nn:nn"
	echo " --no-initrd"
	echo " --qemu-args qemu-system-..."
	echo " --qemu-cmd qemu-system-..."
	echo " --results absolute-pathname"
	echo " --torture rcu"
	exit 1
	}

	while test $# -gt 0
	do
	case "$1" in
	--bootargs)
	checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
	TORTURE_BOOTARGS="$2"
	shift
	;;
	--bootimage)
	checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
	TORTURE_BOOT_IMAGE="$2"
	shift
	;;
	--buildonly)
	TORTURE_BUILDONLY=1
	;;
	--configs)
	checkarg --configs "(list of config files)" "$#" "$2" '^[^/]*$' '^--'
	configs="$2"
	shift
	;;
	--cpus)
	checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
	cpus=$2
	shift
	;;
	--datestamp)
	checkarg --datestamp "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
	ds=$2
	shift
	;;
	--defconfig)
	checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
	TORTURE_DEFCONFIG=$2
	shift
	;;
	--dryrun)
	checkarg --dryrun "sched\|script" $# "$2" 'sched\\|script' '^--'
	dryrun=$2
	shift
	;;
	--duration)
	checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' '^error'
	dur=$2
	shift
	;;
	--interactive)
	TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
	;;
	--kmake-arg)
	checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
	TORTURE_KMAKE_ARG="$2"
	shift
	;;
	--kversion)
	checkarg --kversion "(kernel version)" $# "$2" '^v[0-9.]*$' '^error'
	kversion=$2
	shift
	;;
	--mac)
	checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
	TORTURE_QEMU_MAC=$2
	shift
	;;
	--no-initrd)
	TORTURE_INITRD=""; export TORTURE_INITRD
	;;
	--qemu-args)
	checkarg --qemu-args "-qemu args" $# "$2" '^-' '^error'
	TORTURE_QEMU_ARG="$2"
	shift
	;;
	--qemu-cmd)
	checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
	TORTURE_QEMU_CMD="$2"
	shift
	;;
	--results)
	checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
	resdir=$2
	shift
	;;
	--torture)
	checkarg --torture "(suite name)" "$#" "$2" '^\(lock\\|rcu\)$' '^--'
	TORTURE_SUITE=$2
	shift
	;;
	*)
	echo Unknown argument $1
	usage
	;;
	esac
	shift
	done

	CONFIGFRAG=${KVM}/configs/${TORTURE_SUITE}; export CONFIGFRAG
	KVPATH=${CONFIGFRAG}/$kversion; export KVPATH

	if test -z "$configs"
	then
	configs="`cat $CONFIGFRAG/$kversion/CFLIST`"
	fi

	if test -z "$resdir"
	then
	resdir=$KVM/res
	fi

	# Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
	touch $T/cfgcpu
	for CF in $configs
	do
	if test -f "$CONFIGFRAG/$kversion/$CF"
	then
	echo $CF `configNR_CPUS.sh $CONFIGFRAG/$kversion/$CF` >> $T/cfgcpu
	else
	echo "The --configs file $CF does not exist, terminating."
	exit 1
	fi
	done
	sort -k2nr $T/cfgcpu > $T/cfgcpu.sort

	# Use a greedy bin-packing algorithm, sorting the list accordingly.
	awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
	BEGIN {
	njobs = 0;
	}

	{
	# Read file of tests and corresponding required numbers of CPUs.
	cf[njobs] = $1;
	cpus[njobs] = $2;
	njobs++;
	}

	END {
	alldone = 0;
	batch = 0;
	nc = -1;

	# Each pass through the following loop creates on test batch
	# that can be executed concurrently given ncpus. Note that a
	# given test that requires more than the available CPUs will run in
	# their own batch. Such tests just have to make do with what
	# is available.
	while (nc != ncpus) {
	batch++;
	nc = ncpus;

	# Each pass through the following loop considers one
	# test for inclusion in the current batch.
	for (i = 0; i < njobs; i++) {
	if (done[i])
	continue; # Already part of a batch.
	if (nc >= cpus[i] \|\| nc == ncpus) {

	# This test fits into the current batch.
	done[i] = batch;
	nc -= cpus[i];
	if (nc <= 0)
	break; # Too-big test in its own batch.
	}
	}
	}

	# Dump out the tests in batch order.
	for (b = 1; b <= batch; b++)
	for (i = 0; i < njobs; i++)
	if (done[i] == b)
	print cf[i], cpus[i];
	}'

	# Generate a script to execute the tests in appropriate batches.
	cat << ___EOF___ > $T/script
	CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
	KVM="$KVM"; export KVM
	KVPATH="$KVPATH"; export KVPATH
	PATH="$PATH"; export PATH
	TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
	TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
	TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
	TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
	TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
	TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
	TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
	TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
	TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
	if ! test -e $resdir
	then
	mkdir -p "$resdir" \|\| :
	fi
	mkdir $resdir/$ds
	echo Results directory: $resdir/$ds
	echo $scriptname $args
	touch $resdir/$ds/log
	echo $scriptname $args >> $resdir/$ds/log
	echo ${TORTURE_SUITE} > $resdir/$ds/TORTURE_SUITE
	pwd > $resdir/$ds/testid.txt
	if test -d .git
	then
	git status >> $resdir/$ds/testid.txt
	git rev-parse HEAD >> $resdir/$ds/testid.txt
	if ! git diff HEAD > $T/git-diff 2>&1
	then
	cp $T/git-diff $resdir/$ds
	fi
	fi
	___EOF___
	awk < $T/cfgcpu.pack \
	-v CONFIGDIR="$CONFIGFRAG/$kversion/" \
	-v KVM="$KVM" \
	-v ncpus=$cpus \
	-v rd=$resdir/$ds/ \
	-v dur=$dur \
	-v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
	-v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
	'BEGIN {
	i = 0;
	}

	{
	cf[i] = $1;
	cpus[i] = $2;
	i++;
	}

	# Dump out the scripting required to run one test batch.
	function dump(first, pastlast)
	{
	print "echo ----Start batch: `date`";
	print "echo ----Start batch: `date` >> " rd "/log";
	jn=1
	for (j = first; j < pastlast; j++) {
	builddir=KVM "/b" jn
	cpusr[jn] = cpus[j];
	if (cfrep[cf[j]] == "") {
	cfr[jn] = cf[j];
	cfrep[cf[j]] = 1;
	} else {
	cfrep[cf[j]]++;
	cfr[jn] = cf[j] "." cfrep[cf[j]];
	}
	if (cpusr[jn] > ncpus && ncpus != 0)
	ovf = "(!)";
	else
	ovf = "";
	print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date`";
	print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` >> " rd "/log";
	print "rm -f " builddir ".*";
	print "touch " builddir ".wait";
	print "mkdir " builddir " > /dev/null 2>&1 \|\| :";
	print "mkdir " rd cfr[jn] " \|\| :";
	print "kvm-test-1-run.sh " CONFIGDIR cf[j], builddir, rd cfr[jn], dur " \"" TORTURE_QEMU_ARG "\" \"" TORTURE_BOOTARGS "\" > " rd cfr[jn] "/kvm-test-1-run.sh.out 2>&1 &"
	print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date`";
	print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` >> " rd "/log";
	print "while test -f " builddir ".wait"
	print "do"
	print "\tsleep 1"
	print "done"
	print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date`";
	print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` >> " rd "/log";
	jn++;
	}
	for (j = 1; j < jn; j++) {
	builddir=KVM "/b" j
	print "rm -f " builddir ".ready"
	print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date`";
	print "echo ----", cfr[j], cpusr[j] ovf ": Starting kernel. `date` >> " rd "/log";
	}
	print "wait"
	print "echo ---- All kernel runs complete. `date`";
	print "echo ---- All kernel runs complete. `date` >> " rd "/log";
	for (j = 1; j < jn; j++) {
	builddir=KVM "/b" j
	print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results:";
	print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: >> " rd "/log";
	print "cat " rd cfr[j] "/kvm-test-1-run.sh.out";
	print "cat " rd cfr[j] "/kvm-test-1-run.sh.out >> " rd "/log";
	}
	}

	END {
	njobs = i;
	nc = ncpus;
	first = 0;

	# Each pass through the following loop considers one test.
	for (i = 0; i < njobs; i++) {
	if (ncpus == 0) {
	# Sequential test specified, each test its own batch.
	dump(i, i + 1);
	first = i;
	} else if (nc < cpus[i] && i != 0) {
	# Out of CPUs, dump out a batch.
	dump(first, i);
	first = i;
	nc = ncpus;
	}
	# Account for the CPUs needed by the current test.
	nc -= cpus[i];
	}
	# Dump the last batch.
	if (ncpus != 0)
	dump(first, i);
	}' >> $T/script

	cat << ___EOF___ >> $T/script
	echo
	echo
	echo " --- `date` Test summary:"
	echo Results directory: $resdir/$ds
	if test -z "$TORTURE_BUILDONLY"
	then
	kvm-recheck.sh $resdir/$ds
	fi
	___EOF___

	if test "$dryrun" = script
	then
	cat $T/script
	exit 0
	elif test "$dryrun" = sched
	then
	# Extract the test run schedule from the script.
	egrep 'Start batch\|Starting build\.' $T/script \|
	grep -v ">>" \|
	sed -e 's/:.*$//' -e 's/^echo //'
	exit 0
	else
	# Not a dryru, so run the script.
	sh $T/script
	fi

	# 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