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From: Darren Hart <dvhltc@us.ibm.com>
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()
Date: Tue, 03 Mar 2009 09:29:40 -0800	[thread overview]
Message-ID: <49AD6904.6060903@us.ibm.com> (raw)
In-Reply-To: <1236085438.5330.4336.camel@laptop>

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

  reply	other threads:[~2009-03-03 17:29 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-03  0:02 [TIP][RFC 0/7] requeue pi implemenation Darren Hart
2009-03-03  0:09 ` [TIP][RFC 1/7] futex: futex_wait_queue_me() Darren Hart
2009-03-03  0:11 ` [TIP][RFC 2/7] futex: futex_top_waiter() Darren Hart
2009-03-07 15:16   ` Thomas Gleixner
2009-03-09 18:04     ` Darren Hart
2009-03-03  0:13 ` [TIP][RFC 3/7] futex: futex_lock_pi_atomic() Darren Hart
2009-03-03 13:03   ` Peter Zijlstra
2009-03-03 17:29     ` Darren Hart [this message]
2009-03-03  0:14 ` [TIP][RFC 4/7] futex: finish_futex_lock_pi() Darren Hart
2009-03-07 15:30   ` Thomas Gleixner
2009-03-09 18:05     ` Darren Hart
2009-03-03  0:16 ` [TIP][RFC 5/7] rt_mutex: add proxy lock routines Darren Hart
2009-03-07 15:44   ` Thomas Gleixner
2009-03-09 18:31     ` Darren Hart
2009-03-03  0:20 ` [TIP][RFC 6/7] futex: add requeue_pi calls Darren Hart
2009-03-04  7:53   ` Darren Hart
2009-03-05 16:51     ` Darren Hart
2009-03-06  1:42       ` Darren Hart
2009-03-06  2:21         ` Steven Rostedt
2009-03-06  5:27           ` Darren Hart
2009-03-07 15:50             ` Thomas Gleixner
2009-03-09 19:55               ` Darren Hart
2009-03-07  6:03         ` Sripathi Kodi
2009-03-09  9:48   ` Thomas Gleixner
2009-03-10  4:50     ` Darren Hart
2009-03-10 13:39       ` Thomas Gleixner
2009-03-03  0:23 ` [TIP][RFC 7/7] requeue pi testcase Darren Hart

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