From: William Allen Simpson <william.allen.simpson@gmail.com>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Stephen Hemminger <shemminger@vyatta.com>,
sclark46@earthlink.net,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel Developers <linux-kernel@vger.kernel.org>,
Linux Kernel Network Developers <netdev@vger.kernel.org>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: Documentation: rw_lock lessons learned
Date: Fri, 13 Nov 2009 11:15:42 -0500 [thread overview]
Message-ID: <4AFD862E.6070105@gmail.com> (raw)
In-Reply-To: <4AFD1FF1.7080906@s5r6.in-berlin.de>
Stefan Richter wrote:
> Stephen Hemminger wrote:
>> On Thu, 12 Nov 2009 14:13:03 -0500
>> Stephen Clark <sclark46@earthlink.net> wrote:
>>> How up to date is this doc?
>>>
>>> http://www.kernel.org/pub/linux/kernel/people/rusty/kernel-locking/index.html
>>>
>> Out of date.
>> 1. Missing mutex's which have largely replaced semaphores.
>>
>> 2. Missing change to lock initialization in later kernels.
>>
>> 3. Missing description of lock dependency checker which should be in same guide.
>
> 4. The section on atomic reference counting should refer to <linux/kref.h>.
I'd also read that, and that's where I got some of my wrong thinking. But
that does point to Documentation/spin_locks.txt, which I took to be
authoritative (and followed). That's the reason spin_locks.txt should be
updated, as others are having the same problems....
Anybody have answers/updates to Linus's concerns about "pretty old and
bogus language"?
next prev parent reply other threads:[~2009-11-13 16:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-10 19:55 [PATCH resent] Documentation: rw_lock lessons learned William Allen Simpson
2009-11-10 21:22 ` Paul E. McKenney
2009-11-11 2:06 ` Stephen Hemminger
2009-11-11 17:08 ` William Allen Simpson
2009-11-11 17:37 ` Stephen Hemminger
2009-11-12 11:06 ` [PATCH v2] " William Allen Simpson
2009-11-12 15:40 ` Linus Torvalds
2009-11-12 17:04 ` Stephen Hemminger
2009-11-12 19:13 ` Stephen Clark
2009-11-12 23:00 ` Stephen Hemminger
2009-11-13 8:59 ` Stefan Richter
2009-11-13 16:15 ` William Allen Simpson [this message]
2009-12-11 17:01 ` [PATCH v2] " William Allen Simpson
2009-12-11 21:07 ` Jarek Poplawski
2009-12-12 10:36 ` William Allen Simpson
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