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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: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Paul E. McKenney 2014-01-17 03:10:16 -08:00
parent db007ab5ce
commit a7582815b9
1 changed files with 35 additions and 4 deletions
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39
tools/testing/selftests/rcutorture/bin/kvm.sh
View File

@ -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
echo Results directory: $resdir/$ds
if test "$dryrun" = ""
then
echo Results directory: $resdir/$ds
echo $scriptname $args
fi
touch $resdir/$ds/log
echo $scriptname $args
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
sh $T/script
if test "$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