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Commit a7582815 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Add dryrun capability 



Actual rcutorture tests take considerable time and machine resources,
so it is inconvenient to actually do an rcutorture run when optimizing
the bin-packing algorithm.  This commit therefore adds a --dryrun
argument, which defaults to doing a run, but for which "sched"
says to simply print the run schedule and "script" dumps the script
without running it.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent db007ab5

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

+35 −4
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ trap 'rm -rf $T' 0 
mkdir $T



dur=30

dryrun=""

KVM="`pwd`/tools/testing/selftests/rcutorture"; export KVM

PATH=${KVM}/bin:$PATH; export PATH

builddir="${KVM}/b1"
@@ -56,6 +57,7 @@ usage () { 
	echo "       --configs \"config-file list\""

	echo "       --cpus N"

	echo "       --datestamp string"

	echo "       --dryrun sched|script"

	echo "       --duration minutes"

	echo "       --interactive"

	echo "       --kmake-arg kernel-make-arguments"
@@ -101,6 +103,11 @@ do 
		ds=$2

		shift

		;;

	--dryrun)

		checkarg --dryrun "sched|script" $# "$2" 'sched\|script' '^--'

		dryrun=$2

		shift

		;;

	--duration)

		checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' '^error'

		dur=$2
@@ -179,9 +186,12 @@ else 
	fi

fi

mkdir $resdir/$ds

if test "$dryrun" = ""

then

	echo Results directory: $resdir/$ds

touch $resdir/$ds/log

	echo $scriptname $args

fi

touch $resdir/$ds/log

echo $scriptname $args >> $resdir/$ds/log



pwd > $resdir/$ds/testid.txt
@@ -231,7 +241,7 @@ function dump(first, pastlast) 
		print "echo ", cf[j], cpus[j] ": Starting build."

		print "rm -f " builddir ".*"

		print "touch " builddir ".wait"

		print "mkdir " builddir " || :"

		print "mkdir " builddir " > /dev/null 2>&1 || :"

		if (cfrep[cf[j]] == "") {

			cfr[j] = cf[j];

			cfrep[cf[j]] = 1;
@@ -286,7 +296,28 @@ END { 
		dump(first, i);

}' > $T/script



if test "$dryrun" = script

then

	echo CONFIGFRAG="$CONFIGFRAG; export CONFIGFRAG"

	echo KVM="$KVM; export KVM"

	echo KVPATH="$KVPATH; export KVPATH"

	echo PATH="$PATH; export PATH"

	echo RCU_BUILDONLY="$RCU_BUILDONLY; export RCU_BUILDONLY"

	echo RCU_INITRD="$RCU_INITRD; export RCU_INITRD"

	echo RCU_KMAKE_ARG="$RCU_KMAKE_ARG; export RCU_KMAKE_ARG"

	echo RCU_QEMU_CMD="$RCU_QEMU_CMD; export RCU_QEMU_CMD"

	echo RCU_QEMU_INTERACTIVE="$RCU_QEMU_INTERACTIVE; export RCU_QEMU_INTERACTIVE"

	echo RCU_QEMU_MAC="$RCU_QEMU_MAC; export RCU_QEMU_MAC"

	cat $T/script

	exit 0

elif test "$dryrun" = sched

then

	egrep 'start batch|Starting build\.' $T/script |

		sed -e 's/:.*$//' -e 's/^echo //'

	exit 0

else

	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