Re: [PATCH 0/2] rcu: Extended quiescent state for adaptive nohz

From: Paul E. McKenney
Date: Mon Jun 04 2012 - 14:14:51 EST


On Mon, Jun 04, 2012 at 02:08:26PM +0200, fweisbec@xxxxxxxxx wrote:
> From: Frederic Weisbecker <fweisbec@xxxxxxxxx>
>
> Paul, Ingo,
>
> This is a rebase of the nohz cpusets RCU APIs on top of Paul's latest
> -rcu (rcu/core) branch.
>
> I have only built tested it yet, I need to do a full rebase of my
> tree to test it in practice. But I wanted to show you how it looks
> like first.
>
> I also wonder if we can set that to a tree somewhere. Ingo suggested
> to set up a tree on -tip to apply the uncontroversial part of nohz
> cpusets patches and iterate from there. I think it would accelerate
> everything if we start doing that.

It would probably be best to put these two in the -rcu set in order to
avoid conflicts with possible further RCU_FAST_NO_HZ work. I could
push this to -tip early, if that would help.

Thanx, Paul

> Tell me what you think.
>
> Thanks.
>
> Frederic Weisbecker (2):
> rcu: New rcu_user_enter() and rcu_user_exit() APIs
> rcu: New rcu_user_enter_irq() and rcu_user_exit_irq() APIs
>
> include/linux/rcupdate.h | 4 +
> kernel/rcutree.c | 184 +++++++++++++++++++++++++++++++++++++++------
> 2 files changed, 163 insertions(+), 25 deletions(-)
>
> --
> 1.7.5.4
>
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