rcutorture: Add KVM-based test framework

This commit adds the test framework that I used to test RCU under KVM.
This consists of a group of scripts and Kconfig fragments.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Greg KH <gregkh@linuxfoundation.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
new file mode 100644
index 000000000000..46c75ee2f528
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -0,0 +1,173 @@
+#!/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, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+
+scriptname=$0
+
+dur=30
+KVM=`pwd`/tools/testing/selftests/rcutorture; export KVM
+builddir=${KVM}/b1
+resdir=""
+configs=" sysidleY.2013.06.19a \
+	  sysidleN.2013.06.19a \
+	  P1-S-T-NH-SD-SMP-HP \
+	  P2-2-t-nh-sd-SMP-hp \
+	  P3-3-T-nh-SD-SMP-hp \
+	  P4-A-t-NH-sd-SMP-HP \
+	  P5-U-T-NH-sd-SMP-hp \
+	  P6---t-nh-SD-smp-hp \
+	  N1-S-T-NH-SD-SMP-HP \
+	  N2-2-t-nh-sd-SMP-hp \
+	  N3-3-T-nh-SD-SMP-hp \
+	  N4-A-t-NH-sd-SMP-HP \
+	  N5-U-T-NH-sd-SMP-hp \
+	  PT1-nh \
+	  PT2-NH \
+	  NT1-nh \
+	  NT3-NH"
+
+usage () {
+	echo "Usage: $scriptname optional arguments:"
+	echo "       --builddir absolute-pathname"
+	echo "       --configs \"config-file list\""
+	echo "       --duration minutes"
+	echo "       --rcu-kvm absolute-pathname"
+	echo "       --results absolute-pathname"
+	echo "       --relbuilddir relative-pathname"
+	exit 1
+}
+
+# checkarg --argname argtype $# arg mustmatch cannotmatch
+checkarg () {
+	if test $3 -le 1
+	then
+		echo $1 needs argument $2 matching \"$5\"
+		usage
+	fi
+	if echo "$4" | grep -q -e "$5"
+	then
+		:
+	else
+		echo $1 $2 \"$4\" must match \"$5\"
+		usage
+	fi
+	if echo "$4" | grep -q -e "$6"
+	then
+		echo $1 $2 \"$4\" must not match \"$6\"
+		usage
+	fi
+}
+
+while test $# -gt 0
+do
+	echo ":$1:"
+	case "$1" in
+	--builddir)
+		checkarg --builddir "(absolute pathname)" "$#" "$2" '^/' error
+		builddir=$2
+		gotbuilddir=1
+		shift
+		;;
+	--configs)
+		checkarg --configs "(list of config files)" "$#" "$2" '^[^/]*$' '^--'
+		configs="$2"
+		shift
+		;;
+	--duration)
+		checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' error
+		dur=$2
+		shift
+		;;
+	--rcu-kvm)
+		checkarg --rcu-kvm "(absolute pathname)" "$#" "$2" '^/' error
+		KVM=$2; export KVM
+		if -z "$gotbuilddir"
+		then
+			builddir=${KVM}/b1
+		fi
+		if -n "$gotrelbuilddir"
+		then
+			builddir=${KVM}/${relbuilddir}
+		fi
+		shift
+		;;
+	--relbuilddir)
+		checkarg --relbuilddir "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
+		relbuilddir=$2
+		gotrelbuilddir=1
+		builddir=${KVM}/${relbuilddir}
+		shift
+		;;
+	--results)
+		checkarg --results "(absolute pathname)" "$#" "$2" '^/' error
+		resdir=$2
+		shift
+		;;
+	*)
+		usage
+		;;
+	esac
+	shift
+done
+
+echo "builddir=$builddir"
+echo "dur=$dur"
+echo "KVM=$KVM"
+echo "resdir=$resdir"
+
+PATH=${KVM}/bin:$PATH; export PATH
+CONFIGFRAG=${KVM}/configs; export CONFIGFRAG
+
+if test -z "$resdir"
+then
+	resdir=$KVM/res
+	mkdir $resdir || :
+	ds=`date +%Y.%m.%d-%H:%M:%S`
+	mkdir $resdir/$ds
+	echo Datestamp: $ds
+else
+	mkdir -p "$resdir"
+	ds=""
+fi
+pwd > $resdir/$ds/testid.txt
+if test -d .git
+then
+	git status >> $resdir/$ds/testid.txt
+	git rev-parse HEAD >> $resdir/$ds/testid.txt
+fi
+builddir=$KVM/b1
+mkdir $builddir || :
+
+for CF in $configs
+do
+	rd=$resdir/$ds/$CF
+	mkdir $rd || :
+	echo Results directory: $rd
+	kvm-test-1-rcu.sh $CONFIGFRAG/$CF $builddir $rd $dur "-nographic" "rcutorture.test_no_idle_hz=1 rcutorture.n_barrier_cbs=4 rcutorture.verbose=1"
+done
+# Tracing: trace_event=rcu:rcu_nocb_grace_period,rcu:rcu_grace_period,rcu:rcu_grace_period_init,rcu:rcu_quiescent_state_report,rcu:rcu_fqs,rcu:rcu_callback,rcu:rcu_torture_read,rcu:rcu_invoke_callback,rcu:rcu_fqs,rcu:rcu_dyntick,rcu:rcu_unlock_preempted_task