Message-ID: <49AD6904.6060903@us.ibm.com>
Date: Tue, 03 Mar 2009 09:29:40 -0800
From: Darren Hart <dvhltc@us.ibm.com>
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To: Peter Zijlstra <peterz@infradead.org>
CC: "lkml," <linux-kernel@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>,
       Steven Rostedt <srostedt@redhat.com>,
       Sripathi Kodi <sripathik@in.ibm.com>,
       John Stultz <johnstul@linux.vnet.ibm.com>
Subject: Re: [TIP][RFC 3/7] futex: futex_lock_pi_atomic()
References: <49AC73A9.4040804@us.ibm.com>  <49AC761C.907@us.ibm.com> <1236085438.5330.4336.camel@laptop>
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Peter Zijlstra wrote:

Hi Peter,

Thanks for taking a look.

> On Mon, 2009-03-02 at 16:13 -0800, Darren Hart wrote:
>> + * Returns:
>> + * - 0 on success (futex_q is setup and FUTEX_WAITERS bit is set on the futex)
>> + * - 1 on a successful atomic acquisition of the lock
>> + * - A negative error code on failure
> 
> That utterly confused me for a while.

Sorry about that, guess my doc-fu needs some work.

> 
> Maybe something like:
> 
>  0 - ready to wait
>  1 - acquired the lock
> 
>  <0 - error

Sure thing, I've updated the patch and my git tree:

http://git.kernel.org/?p=linux/kernel/git/dvhart/linux-2.6-tip-hacks.git;a=shortlog;h=requeue-pi-dev

Note, this is a development branch and I continuously update it, 
replacing patches, etc.


-- 
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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