linux-kernel - Re: [PATCH RFC tip/core/rcu] Make SRCU be once again optional

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Date:   Fri, 12 May 2017 11:45:36 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:     linux-kernel@...r.kernel.org, josh@...htriplett.org
Subject: Re: [PATCH RFC tip/core/rcu] Make SRCU be once again optional

On Fri, May 12, 2017 at 11:41:55AM -0700, Paul E. McKenney wrote:
> On Fri, Apr 28, 2017 at 05:10:40PM -0700, Paul E. McKenney wrote:
> > On Fri, Apr 28, 2017 at 05:51:15PM -0400, Nicolas Pitre wrote:
> > > On Fri, 28 Apr 2017, Paul E. McKenney wrote:
> > > 
> > > > Hello, Nicolas!
> > > > 
> > > > Saw the TTY write up LWN and figured I should send this your way.
> > > > It should be worth about 2K compared to current -next, which gave
> > > > up the 2K compared to v4.10.  So really getting things back to where
> > > > they were.
> > > > 
> > > > My current plan is to push this into v4.13.
> > > 
> > > Excellent!
> > > 
> > > If every maintainer finds a way to (optionally) reduce the size of the 
> > > code they maintain by 2K then we'll get a much smaller kernel pretty 
> > > soon.
> > 
> > I would feel better if it wasn't me who had added the 2K, but then
> > again, I do look forward to seeing a negative-sized kernel!  ;-)
> 
> And I am getting a lot of offlist pressure to remove both Tiny RCU and
> Tiny SRCU.  I am pushing back, but I might or might not prevail.  In case
> my pushback gets pushed back, do you have a -tiny tree or some such where
> the code could go?

And adding Josh Triplett on CC, who I should have CCed to start with.

							Thanx, Paul