Re: [PATCH tip/core/rcu 7/9] arm64: Use common outgoing-CPU-notification code

["Paul E. McKenney" <paulmck@linux.vnet.ibm.com>]

On Thu, May 21, 2015 at 02:25:57PM +0100, Catalin Marinas wrote:
> On Thu, May 21, 2015 at 05:48:33AM -0700, Paul E. McKenney wrote:
> > On Thu, May 21, 2015 at 09:58:06AM +0100, Will Deacon wrote:
> > > On Tue, May 12, 2015 at 10:50:05PM +0100, Paul E. McKenney wrote:
> > > > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> > > > 
> > > > 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@linux.vnet.ibm.com>
> > > > Cc: linux-arm-kernel@lists.infradead.org
> > > > Cc: Catalin Marinas <catalin.marinas@arm.com>
> > > > Cc: Will Deacon <will.deacon@arm.com>
> > > > ---
> > > >  arch/arm64/kernel/smp.c | 6 ++----
> > > >  1 file changed, 2 insertions(+), 4 deletions(-)
> > > 
> > > I don't have a better idea, so:
> > > 
> > >   Acked-by: Will Deacon <will.deacon@arm.com>
> > > 
> > > Is this queued via -tip already, or can we pick it into the arm64 tree
> > > for 4.2?
> > 
> > Feel free to take it into the arm64 tree.  Just let me know, and I
> > will drop it from my tree.
> 
> Queued for 4.2. Thanks.

Very good, dropped from my tree.

							Thanx, Paul