torture: Make "--dryrun script" output self-sufficient

The scripts produced by kvm.sh's "--dryrun script" argument were intended
for debugging rather than to run, but it is easier to debug if the script
output matches exactly what is run.  This commit therefore makes this
script runnable.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

tools/testing/selftests/rcutorture/bin/kvm.sh

@@ -175,30 +175,6 @@ then
 	resdir=$KVM/res
 fi
 
-if test "$dryrun" = ""
-then
-	if ! test -e $resdir
-	then
-		mkdir -p "$resdir" || :
-	fi
-	mkdir $resdir/$ds
-
-	# Be noisy only if running the script.
-	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
-	fi
-fi
-
 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
 touch $T/cfgcpu
 for CF in $configs
@@ -267,6 +243,22 @@ END {
 cat << ___EOF___ > $T/script
 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
 TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
+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
+fi
 ___EOF___
 awk < $T/cfgcpu.pack \
 	-v CONFIGDIR="$CONFIGFRAG/$kversion/" \
@@ -366,6 +358,17 @@ END {
 		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
 	# Dump out the script, but define the environment variables that
@@ -397,12 +400,3 @@ else
 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
-
-echo
-echo
-echo " --- `date` Test summary:"
-echo Results directory: $resdir/$ds
-if test -n "$TORTURE_BUILDONLY"
-then
-	kvm-recheck.sh $resdir/$ds
-fi