linux-kernel - Re: [GIT PULL] RCU changes for v4.5

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Date:	Mon, 11 Jan 2016 04:54:23 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] RCU changes for v4.5

On Mon, Jan 11, 2016 at 01:35:18PM +0100, Ingo Molnar wrote:
> Linus,
> 
> Please pull the latest core-rcu-for-linus git tree from:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-for-linus
> 
>    # HEAD: 3104fb3dd45bb47ff1382d1c079c251710ddcae3 Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
> 
> The changes in this cycle were:
> 
>  - Adding transitivity uniformly to rcu_node structure ->lock
>    acquisitions.  (This is implemented by the first two commits
>    on top of v4.4-rc2 due to the pervasive nature of this change.)
> 
>  - Documentation updates, including RCU requirements.
> 
>  - Expedited grace-period changes.
> 
>  - Miscellaneous fixes.
> 
>  - Linked-list fixes, courtesy of KTSAN.
> 
>  - Torture-test updates.
> 
>  - Late-breaking fix to sysrq-generated crash.
> 
> One thing I should note is that these pieces of documentation are fairly large 
> files:
> 
>  .../RCU/Design/Requirements/Requirements.html      | 2897 ++++++++++++++++++++
>  .../RCU/Design/Requirements/Requirements.htmlx     | 2741 ++++++++++++++++++
> 
> and are written in HTML, not the usual .txt style. I hope they are fine.

For whatever it is worth, the reason for this unconventional choice
was that attempts to do the diagrams in ASCII art failed miserably.
And attempts to do ASCII art for the upcoming documentation of the data
structures failed even more miserably.

							Thanx, Paul