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torture: Prepare for splitting qemu execution from kvm-test-1-run.sh 

Distributed execution of rcutorture is eased if the qemu execution can
be split from the building of the kernel, as this allows target systems
to be used that are not set up to build kernels.  It also avoids issues
with toolchain version skew across the cluster, aside of course from
qemu and KVM version skew.

This commit therefore records needed data as comments in the qemu-cmd file
and moves recording of the starting time to just before qemu is launched.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-11-17 16:28:18 -08:00
parent bc40735870
commit 315957cad4
1 changed files with 3 additions and 1 deletions
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4
tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
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@ -125,7 +125,6 @@ seconds=$4
qemu_args=$5
boot_args=$6
kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
if test -z "$TORTURE_BUILDONLY"
then
echo ' ---' `date`: Starting kernel
@ -158,6 +157,8 @@ then
boot_args="$boot_args $TORTURE_BOOT_GDB_ARG"
fi
echo $QEMU $qemu_args -m $TORTURE_QEMU_MEM -kernel $KERNEL -append \"$qemu_append $boot_args\" $TORTURE_QEMU_GDB_ARG > $resdir/qemu-cmd
echo "# TORTURE_SHUTDOWN_GRACE=$TORTURE_SHUTDOWN_GRACE" >> $resdir/qemu-cmd
echo "# seconds=$seconds" >> $resdir/qemu-cmd
if test -n "$TORTURE_BUILDONLY"
then
@ -174,6 +175,7 @@ echo 'echo $! > $resdir/qemu_pid' >> $T/qemu-cmd
echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
# Attempt to run qemu
kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
( . $T/qemu-cmd; wait `cat $resdir/qemu_pid`; echo $? > $resdir/qemu-retval ) &
commandcompleted=0
if test -z "$TORTURE_KCONFIG_GDB_ARG"