Re: [PATCH RFC tip/core/rcu 01/11] rcu: call __rcu_read_unlock()in exit_rcu for tiny RCU
From: Paul E. McKenney
Date: Thu Mar 24 2011 - 09:07:39 EST
On Thu, Mar 24, 2011 at 11:45:48AM +0800, Lai Jiangshan wrote:
> On 02/26/2011 03:40 AM, Paul E. McKenney wrote:
> > On Fri, Feb 25, 2011 at 04:29:46PM +0800, Lai Jiangshan wrote:
> >> On 02/23/2011 09:39 AM, Paul E. McKenney wrote:
> >>>
> >>> diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
> >>> index 015abae..3cb8e36 100644
> >>> --- a/kernel/rcutiny_plugin.h
> >>> +++ b/kernel/rcutiny_plugin.h
> >>
> >> My original patch was just for tree RCU. It is not merged.
> >> I forgot the tiny RCU case then, this change is needed for tree & tiny RCU.
> >
> > Good catch, I have applied the TREE_RCU patch. I intend to submit
> > both for the next merge window.
> >
>
> Hi, Paul
>
> It is still not merged, and it is not in your git tree.
Indeed it is not yet in my external git tree. Here is my normal work
flow:
1. Develop and test continuously.
2. Based on testing, review, etc., determin which commits are
ready for the next merge window.
3. Midway through the -rc releases, push the commits targeted
to the next merge window to rcu/next. Push any additional
commits to rcu/testing.
4. Towards the last -rc, rebase, retest, wait for the -next
tree to take the changes, and, if all is well, send Ingo
a pull request.
Exposing your changes to -next during the merge window would cause
pointless irritation due to random conflicts with rapidly changing
code.
> I'm writing some patches, to avoid conflict with your code,
> which branch I should based on?
But, yes, it would be much easier for us to handle your changes if
I post them via -rcu. So I have created a new branch rcu/kfree_rcu
that is -not- consumed by -next. The rcu/next and rcu/testing
branches include your base kfree_rcu() patch, but not the uses of
it. These branches are based on 2.6.38, and I will move them ahead
at -rc3 or -rc4.
These currently contain your original patches, but I will be pulling
your latest set.
> Is origin/rcu/next OK?
origin/rcu/kfree_rcu for the moment to avoid messing up -next. But
it will be origin/rcu/next after rebasing onto -rc3 or -rc4.
Thanx, Paul
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