Re: [PATCH 00/10] rcu: Add missing RCU idle APIs on idle loop

On Mon, Sep 17, 2012 at 10:31:24PM +0200, Geert Uytterhoeven wrote:

Hi Frederic, Paul,

On Thu, Aug 23, 2012 at 11:50 PM, Frederic Weisbecker
[off-list ref] wrote:

quoted

On Thu, Aug 23, 2012 at 10:23:22PM +0200, Geert Uytterhoeven wrote:

quoted

On Thu, Aug 23, 2012 at 1:02 PM, Frederic Weisbecker [off-list ref] wrote:

quoted

On Wed, Aug 22, 2012 at 07:18:04PM +0200, Geert Uytterhoeven wrote:

quoted

On Wed, Aug 22, 2012 at 6:23 PM, Frederic Weisbecker [off-list ref] wrote:

quoted

So this fixes some potential RCU stalls in a bunch of architectures.
When rcu_idle_enter()/rcu_idle_exit() became a requirement, we forgot
to handle the architectures that don't support CONFIG_NO_HZ.

I guess the set should be dispatched into arch maintainer trees.

I can take the m68k version, but are you sure you want it this way?
Each of them must be in mainline before they can enter stable.

Yeah, I was thinking the right route is for these patches to be
carried by arch maintainer who then push to Linus and then this goes
to stable.

Is that ok for you?

Otherwise I can carry the patches myself. In a tree of my own, or
Paul's or mmotm. As long as I have your ack.

I applied your patch to the m68k for-3.6/for-linus branch.
I'll ask Linus to pull later in the rc cycle (right now I don't have
anything else
queued for 3.6).
Still, I think it's better to just collect acks and send it to Linus
in one shot,
so it can go into stable in one shot too.

Sure I can do that if you prefer.

What's the conclusion on this one? I saw it entered tip.

I don't see it at tip/master, but perhaps I am looking at the wrong branch.

I still have it (as the only commit) on my for-3.6 branch, but I don't
think m68k
is important enough to be the only architecture to have this fix in 3.6 ;-)

I got only two acks in addition to yours, plus one Tested-by.  So, no,
there does not appear to be a large groundswell of support for pushing
this into 3.6.  If it doesn't go in by some other path, I will be pushing
it into 3.7.

							Thanx, Paul