Re: [PATCH arm] Use common outgoing-CPU-notification code
From: Paul E. McKenney
Date: Wed Jun 26 2019 - 13:50:19 EST
On Wed, Jun 26, 2019 at 05:42:00PM +0100, Mark Rutland wrote:
> On Mon, Jun 17, 2019 at 06:06:57AM -0700, Paul E. McKenney wrote:
> > On Mon, Jun 17, 2019 at 12:58:19PM +0100, Mark Rutland wrote:
> > > On Tue, Jun 11, 2019 at 12:24:10PM -0700, Paul E. McKenney wrote:
> > > > This commit removes the open-coded CPU-offline notification with new
> > > > common code. In particular, this change avoids calling scheduler code
> > > > using RCU from an offline CPU that RCU is ignoring. This is a minimal
> > > > change. A more intrusive change might invoke the cpu_check_up_prepare()
> > > > and cpu_set_state_online() functions at CPU-online time, which would
> > > > allow onlining throw an error if the CPU did not go offline properly.
> > > >
> > > > Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
> > > > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> > > > Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
> > > > Cc: Mark Rutland <mark.rutland@xxxxxxx>
> > > > Tested-by: Dietmar Eggemann <dietmar.eggemann@xxxxxxx>
> > >
> > > FWIW:
> > >
> > > Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
> > >
> > > On the assumption that Russell is ok with this, I think this should be
> > > dropped into the ARM patch system .
> > >
> > > Paul, are you familiar with that, or would you prefer that someone else
> > > submits the patch there? I can do so if you'd like.
> > I never have used this system, so please do drop it in there! Let me
> > know when you have done so, and I will then drop it from -rcu.
> After testing that multi_v7_defconfig built, I've just submitted this as
Very good, thank you! I will drop this from my -rcu tree.