linux-kernel - Re: [PATCH tip/core/rcu 41/45] torture: Put qemu into the background

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Date:	Tue, 13 May 2014 10:44:13 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	josh@...htriplett.org
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	niv@...ibm.com, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	darren@...art.com, fweisbec@...il.com, oleg@...hat.com, sbw@....edu
Subject: Re: [PATCH tip/core/rcu 41/45] torture: Put qemu into the background

On Wed, May 07, 2014 at 03:18:58PM -0700, josh@...htriplett.org wrote:
> On Mon, Apr 28, 2014 at 05:25:29PM -0700, Paul E. McKenney wrote:
> > From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
> > 
> > Currently, qemu runs in the foreground, which prevents the script from
> > killing it in case the kernel locks up.  This commit therefore places
> > qemu into the background, allowing the script to recover from lockups.
> > 
> > Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> 
> qemu originally did run in the background before this patch series;
> please merge this into the patch that introduces the echo and thus
> breaks that.

Turned out that the conflicts weren't as bad as I had feared, so done!

							Thanx, Paul

> >  tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > 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 b1e85b049075..67e89f06e77f 100755
> > --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
> > +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
> > @@ -157,7 +157,7 @@ then
> >  	echo Build-only run specified, boot/test omitted.
> >  	exit 0
> >  fi
> > -$QEMU $qemu_args -m 512 -kernel $builddir/$BOOT_IMAGE -append "$qemu_append $boot_args"; echo $? > $resdir/qemu-retval &
> > +( $QEMU $qemu_args -m 512 -kernel $builddir/$BOOT_IMAGE -append "$qemu_append $boot_args"; echo $? > $resdir/qemu-retval ) &
> >  qemu_pid=$!
> >  commandcompleted=0
> >  echo Monitoring qemu job at pid $qemu_pid
> > -- 
> > 1.8.1.5
> > 
> 

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