rcutorture: Don't rebuild identical kernel
Currently, if the user specifies multiple runs of a given test
configuration, the scripting does multiple kernel builds. This wastes
both time and disk space, so this commit makes the scripting use the
first build for all runs of a given test configuration.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
index 73a2656..4109f30 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
@@ -91,25 +91,33 @@
# CONFIG_PCMCIA=n
# CONFIG_CARDBUS=n
# CONFIG_YENTA=n
-if kvm-build.sh $config_template $builddir $T
+base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
+if test "$base_resdir" != "$resdir" -a -f $base_resdir/bzImage -a -f $base_resdir/vmlinux
then
+ # Rerunning previous test, so use that test's kernel.
+ QEMU="`identify_qemu $base_resdir/vmlinux`"
+ KERNEL=$base_resdir/bzImage
+ ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh
+ ln -s $base_resdir/.config $resdir # for kvm-recheck.sh
+elif kvm-build.sh $config_template $builddir $T
+then
+ # Had to build a kernel for this test.
QEMU="`identify_qemu $builddir/vmlinux`"
BOOT_IMAGE="`identify_boot_image $QEMU`"
cp $builddir/Make*.out $resdir
+ cp $builddir/vmlinux $resdir
cp $builddir/.config $resdir
if test -n "$BOOT_IMAGE"
then
cp $builddir/$BOOT_IMAGE $resdir
+ KERNEL=$resdir/bzImage
else
echo No identifiable boot image, not running KVM, see $resdir.
echo Do the torture scripts know about your architecture?
fi
parse-build.sh $resdir/Make.out $title
- if test -f $builddir.wait
- then
- mv $builddir.wait $builddir.ready
- fi
else
+ # Build failed.
cp $builddir/Make*.out $resdir
cp $builddir/.config $resdir || :
echo Build failed, not running KVM, see $resdir.
@@ -119,6 +127,10 @@
fi
exit 1
fi
+if test -f $builddir.wait
+then
+ mv $builddir.wait $builddir.ready
+fi
while test -f $builddir.ready
do
sleep 1
@@ -166,8 +178,8 @@
exit 0
fi
echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
-echo $QEMU $qemu_args -m 512 -kernel $resdir/bzImage -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd
-( $QEMU $qemu_args -m 512 -kernel $resdir/bzImage -append "$qemu_append $boot_args"& echo $! > $resdir/qemu_pid; wait `cat $resdir/qemu_pid`; echo $? > $resdir/qemu-retval ) &
+echo $QEMU $qemu_args -m 512 -kernel $KERNEL -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd
+( $QEMU $qemu_args -m 512 -kernel $KERNEL -append "$qemu_append $boot_args"& echo $! > $resdir/qemu_pid; wait `cat $resdir/qemu_pid`; echo $? > $resdir/qemu-retval ) &
commandcompleted=0
sleep 10 # Give qemu's pid a chance to reach the file
if test -s "$resdir/qemu_pid"