rcutorture: Add per-version default Kconfig fragments and module parameters

Different Kconfig parameters apply to different kernel versions, as
do different rcutorture module parameters.  This commit allows the
rcutorture test scripts to adjust for different kernel versions.

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

3 files changed, 15 insertions, 30 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh
index db1c32acdcf6..d4c15f81cd27 100644
--- a/tools/testing/selftests/rcutorture/bin/functions.sh
+++ b/tools/testing/selftests/rcutorture/bin/functions.sh
@@ -32,11 +32,10 @@ bootparam_hotplug_cpu () {
 #
 # Returns 1 if the config fragment specifies hotplug CPU.
 configfrag_hotplug_cpu () {
-	cf=$1
-	if test ! -r $cf
+	if test ! -r "$1"
 	then
-		echo Unreadable config fragment $cf 1>&2
+		echo Unreadable config fragment "$1" 1>&2
 		exit -1
 	fi
-	grep -q '^CONFIG_HOTPLUG_CPU=y$' $cf
+	grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1"
 }
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
index 3b53078c5ff2..0a3f037a8bb3 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-rcu.sh
@@ -44,6 +44,7 @@ T=/tmp/kvm-test-1-rcu.sh.$$
 trap 'rm -rf $T' 0
 
 . $KVM/bin/functions.sh
+. $KVPATH/ver_functions.sh
 
 config_template=${1}
 title=`echo $config_template | sed -e 's/^.*\///'`
@@ -133,14 +134,9 @@ else
 fi
 
 # Generate CPU-hotplug boot parameters
-if ! bootparam_hotplug_cpu "$bootargs"
-then
-	if configfrag_hotplug_cpu $builddir/.config
-	then
-		echo Kernel configured for CPU hotplug, adding rcutorture.
-		bootargs="$bootargs rcutorture.onoff_interval=3 rcutorture.onoff_holdoff=30"
-	fi
-fi
+boot_args="`rcutorture_param_onoff "$boot_args" $builddir/.config`"
+# Generate rcu_barrier() boot parameter
+boot_args="`rcutorture_param_n_barrier_cbs "$boot_args"`"
 
 echo $QEMU -name rcu-test -serial file:$builddir/console.log $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append \"noapic selinux=0 console=ttyS0 initcall_debug debug rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args\" > $resdir/qemu-cmd
 $QEMU -name rcu-test -serial file:$builddir/console.log $qemu_args -m 512 -kernel $builddir/arch/x86/boot/bzImage -append "noapic selinux=0 console=ttyS0 initcall_debug debug rcutorture.stat_interval=15 rcutorture.shutdown_secs=$seconds rcutorture.rcutorture_runnable=1 $boot_args" &
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 7deb7b44d647..92f726b01044 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -33,23 +33,7 @@ dur=30
 KVM=`pwd`/tools/testing/selftests/rcutorture; export KVM
 builddir=${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"
+configs=""
 ds=`date +%Y.%m.%d-%H:%M:%S`
 kversion=""
 
@@ -156,6 +140,12 @@ echo "resdir=$resdir"
 
 PATH=${KVM}/bin:$PATH; export PATH
 CONFIGFRAG=${KVM}/configs; export CONFIGFRAG
+KVPATH=${CONFIGFRAG}/$kversion; export KVPATH
+
+if test -z "$configs"
+then
+	configs="`cat $CONFIGFRAG/$kversion/CFLIST`"
+fi
 
 if test -z "$resdir"
 then
@@ -181,6 +171,6 @@ do
 	rd=$resdir/$ds/$CF
 	mkdir $rd || :
 	echo Results directory: $rd
-	kvm-test-1-rcu.sh $CONFIGFRAG/$kversion/$CF $builddir $rd $dur "-nographic" "rcutorture.test_no_idle_hz=1 rcutorture.n_barrier_cbs=4 rcutorture.verbose=1"
+	kvm-test-1-rcu.sh $CONFIGFRAG/$kversion/$CF $builddir $rd $dur "-nographic" "rcutorture.test_no_idle_hz=1 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