linux-kernel - Re: [GIT PULL] locking tree changes for v3.16

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Date:	Thu, 5 Jun 2014 10:17:42 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Davidlohr Bueso <davidlohr@...com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] locking tree changes for v3.16


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Tue, Jun 03, 2014 at 02:50:51PM -0700, Davidlohr Bueso wrote:
> > On Tue, 2014-06-03 at 13:48 +0200, Ingo Molnar wrote:
> > > Linus,
> > > 
> > > Please pull the latest locking-core-for-linus git tree from:
> > > 
> > >    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-for-linus
> > > 
> > >    # HEAD: 3cf2f34e1a3d4d5ff209d087925cf950e52f4805 rwsem: Add comments to explain the meaning of the rwsem's count field
> > > 
> > > The main changes in this cycle were:
> > > 
> > >  - reduced/streamlined smp_mb__*() interface that allows more usecases 
> > >    and makes the existing ones less buggy, especially in rarer 
> > >    architectures
> > > 
> > >  - add rwsem implementation comments
> > > 
> > >  - bump up lockdep limits
> > 
> > So I guess the rwsem optimistic spinning stuff will be routed through
> > akpm then (which is already in -next for a while, through -mm).
> > 
> > Also curious about why Peter's rewrite of the qrwlock_t was 
> > removed from -tip... I noticed it was there for a few days then 
> > disappeared. What am I missing?

I merged it, but then it broke and I reported the breakage - and 
zapped the bits to not create dependencies on broken bits.

( There was also quite some discussion back and forth as recently as 
  two weeks ago, so it didn't feel cooked enough to me to pick it up 
  directly from email - but once it shows up in your queue I'm picking 
  it up. )

> Ingo is 'missing' most of the time, so while I sit here with a 
> massive queue of patches its nearly impossible for me to get 
> anything merged :-(

Right now I'm somewhat 'missing' because I fell ill right when the 
merge window began :-/ But I merged all your pending bits shortly 
before the merge window started. During the merge window itself I
try not to merge fresh patches.

Thanks,

	Ingo
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