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From: Zach Brown <zach.brown@oracle.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org, linux-aio@kvack.org,
	Suparna Bhattacharya <suparna@in.ibm.com>,
	Benjamin LaHaise <bcrl@kvack.org>
Subject: Re: [PATCH 2 of 4] Introduce i386 fibril scheduling
Date: Mon, 5 Feb 2007 11:44:28 -0500	[thread overview]
Message-ID: <202BD42A-0600-4A8A-87E3-4A237BAE6B41@oracle.com> (raw)
In-Reply-To: <20070202195932.15b9b4ed@localhost.localdomain>

> Other questions really relate to the scheduling - Zach do you intend
> schedule_fibrils() to be a call code would make or just from  
> schedule() ?

I'd much rather keep the current sleeping API in as much as is  
possible.  So, yeah, if we can get schedule() to notice and behave  
accordingly I'd prefer that.  In the current code it's keyed off  
finding a stack allocation hanging off of current->.  If the caller  
didn't care about guaranteeing non-blocking submission then we  
wouldn't need that.. we could use a thread_info flag bit, or  
something.  Avoiding that allocation in the cached case would be nice.

> Alan (who used to use Co-routines in real languages on 36bit
> computers with 9bit bytes before learning C)

Yes, don't despair, I'm not co-routine ignorant.  In fact, I'm almost  
positive it was you who introduced them to me at some point in the  
previous millennium ;).

- z


  parent reply	other threads:[~2007-02-05 16:45 UTC|newest]

Thread overview: 153+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-30 20:39 [PATCH 0 of 4] Generic AIO by scheduling stacks Zach Brown
2007-01-30 20:39 ` [PATCH 1 of 4] Introduce per_call_chain() Zach Brown
2007-01-30 20:39 ` [PATCH 2 of 4] Introduce i386 fibril scheduling Zach Brown
2007-02-01  8:36   ` Ingo Molnar
2007-02-01 13:02     ` Ingo Molnar
2007-02-01 13:19       ` Christoph Hellwig
2007-02-01 13:52         ` Ingo Molnar
2007-02-01 17:13           ` Mark Lord
2007-02-01 18:02             ` Ingo Molnar
2007-02-02 13:23         ` Andi Kleen
2007-02-01 21:52       ` Zach Brown
2007-02-01 22:23         ` Benjamin LaHaise
2007-02-01 22:37           ` Zach Brown
2007-02-02 13:22       ` Andi Kleen
2007-02-01 20:07     ` Linus Torvalds
2007-02-02 10:49       ` Ingo Molnar
2007-02-02 15:56         ` Linus Torvalds
2007-02-02 19:59           ` Alan
2007-02-02 20:14             ` Linus Torvalds
2007-02-02 20:58               ` Davide Libenzi
2007-02-02 21:09                 ` Linus Torvalds
2007-02-02 21:30               ` Alan
2007-02-02 21:30                 ` Linus Torvalds
2007-02-02 22:42                   ` Ingo Molnar
2007-02-02 23:01                     ` Linus Torvalds
2007-02-02 23:17                       ` Linus Torvalds
2007-02-03  0:04                         ` Alan
2007-02-03  0:23                         ` bert hubert
2007-02-02 22:48                   ` Alan
2007-02-05 16:44             ` Zach Brown [this message]
2007-02-02 22:21           ` Ingo Molnar
2007-02-02 22:49             ` Linus Torvalds
2007-02-02 23:55               ` Ingo Molnar
2007-02-03  0:56                 ` Linus Torvalds
2007-02-03  7:15                   ` Suparna Bhattacharya
2007-02-03  8:23                   ` Ingo Molnar
2007-02-03  9:25                     ` Matt Mackall
2007-02-03 10:03                       ` Ingo Molnar
2007-02-05 17:44                     ` Zach Brown
2007-02-05 19:26                       ` Davide Libenzi
2007-02-05 19:41                         ` Zach Brown
2007-02-05 20:10                           ` Davide Libenzi
2007-02-05 20:21                             ` Zach Brown
2007-02-05 20:42                               ` Linus Torvalds
2007-02-05 20:39                             ` Linus Torvalds
2007-02-05 21:09                               ` Davide Libenzi
2007-02-05 21:31                                 ` Kent Overstreet
2007-02-06 20:25                                   ` Davide Libenzi
2007-02-06 20:46                                   ` Linus Torvalds
2007-02-06 21:16                                     ` David Miller
2007-02-06 21:28                                       ` Linus Torvalds
2007-02-06 21:31                                         ` David Miller
2007-02-06 21:46                                           ` Eric Dumazet
2007-02-06 21:50                                           ` Linus Torvalds
2007-02-06 22:28                                             ` Zach Brown
2007-02-06 22:45                                     ` Kent Overstreet
2007-02-06 23:04                                       ` Linus Torvalds
2007-02-07  1:22                                         ` Kent Overstreet
2007-02-06 23:23                                       ` Davide Libenzi
2007-02-06 23:39                                         ` Joel Becker
2007-02-06 23:56                                           ` Davide Libenzi
2007-02-07  0:06                                             ` Joel Becker
2007-02-07  0:23                                               ` Davide Libenzi
2007-02-07  0:44                                                 ` Joel Becker
2007-02-07  1:15                                                   ` Davide Libenzi
2007-02-07  1:24                                                     ` Kent Overstreet
2007-02-07  1:30                                                     ` Joel Becker
2007-02-07  6:16                                                   ` Michael K. Edwards
2007-02-07  9:17                                                     ` Michael K. Edwards
2007-02-07  9:37                                                       ` Michael K. Edwards
2007-02-06  0:32                                 ` Davide Libenzi
2007-02-05 21:21                               ` Zach Brown
2007-02-02 23:37             ` Davide Libenzi
2007-02-03  0:02               ` Davide Libenzi
2007-02-05 17:12               ` Zach Brown
2007-02-05 18:24                 ` Davide Libenzi
2007-02-05 21:44                   ` David Miller
2007-02-06  0:15                     ` Davide Libenzi
2007-02-05 21:36               ` bert hubert
2007-02-05 21:57                 ` Linus Torvalds
2007-02-05 22:07                   ` bert hubert
2007-02-05 22:15                     ` Zach Brown
2007-02-05 22:34                   ` Davide Libenzi
2007-02-06  0:27                   ` Scot McKinley
2007-02-06  0:48                     ` David Miller
2007-02-06  0:48                     ` Joel Becker
2007-02-05 17:02             ` Zach Brown
2007-02-05 18:52               ` Davide Libenzi
2007-02-05 19:20                 ` Zach Brown
2007-02-05 19:38                   ` Davide Libenzi
2007-02-04  5:12   ` Davide Libenzi
2007-02-05 17:54     ` Zach Brown
2007-01-30 20:39 ` [PATCH 3 of 4] Teach paths to wake a specific void * target instead of a whole task_struct Zach Brown
2007-01-30 20:39 ` [PATCH 4 of 4] Introduce aio system call submission and completion system calls Zach Brown
2007-01-31  8:58   ` Andi Kleen
2007-01-31 17:15     ` Zach Brown
2007-01-31 17:21       ` Andi Kleen
2007-01-31 19:23         ` Zach Brown
2007-02-01 11:13           ` Suparna Bhattacharya
2007-02-01 19:50             ` Trond Myklebust
2007-02-02  7:19               ` Suparna Bhattacharya
2007-02-02  7:45                 ` Andi Kleen
2007-02-01 22:18             ` Zach Brown
2007-02-02  3:35               ` Suparna Bhattacharya
2007-02-01 20:26   ` bert hubert
2007-02-01 21:29     ` Zach Brown
2007-02-02  7:12       ` bert hubert
2007-02-04  5:12   ` Davide Libenzi
2007-01-30 21:58 ` [PATCH 0 of 4] Generic AIO by scheduling stacks Linus Torvalds
2007-01-30 22:23   ` Linus Torvalds
2007-01-30 22:53     ` Zach Brown
2007-01-30 22:40   ` Zach Brown
2007-01-30 22:53     ` Linus Torvalds
2007-01-30 23:45       ` Zach Brown
2007-01-31  2:07         ` Benjamin Herrenschmidt
2007-01-31  2:04 ` Benjamin Herrenschmidt
2007-01-31  2:46   ` Linus Torvalds
2007-01-31  3:02     ` Linus Torvalds
2007-01-31 10:50       ` Xavier Bestel
2007-01-31 19:28         ` Zach Brown
2007-01-31 17:59       ` Zach Brown
2007-01-31  5:16     ` Benjamin Herrenschmidt
2007-01-31  5:36     ` Nick Piggin
2007-01-31  5:51       ` Nick Piggin
2007-01-31  6:06       ` Linus Torvalds
2007-01-31  8:43         ` Ingo Molnar
2007-01-31 20:13         ` Joel Becker
2007-01-31 18:20       ` Zach Brown
2007-01-31 17:47     ` Zach Brown
2007-01-31 17:38   ` Zach Brown
2007-01-31 17:51     ` Benjamin LaHaise
2007-01-31 19:25       ` Zach Brown
2007-01-31 20:05         ` Benjamin LaHaise
2007-01-31 20:41           ` Zach Brown
2007-02-04  5:13 ` Davide Libenzi
2007-02-04 20:00   ` Davide Libenzi
2007-02-09 22:33 ` Linus Torvalds
2007-02-09 23:11   ` Davide Libenzi
2007-02-09 23:35     ` Linus Torvalds
2007-02-10 18:45       ` Davide Libenzi
2007-02-10 19:01         ` Linus Torvalds
2007-02-10 19:35           ` Linus Torvalds
2007-02-10 20:59           ` Davide Libenzi
2007-02-10  0:04   ` Eric Dumazet
2007-02-10  0:12     ` Linus Torvalds
2007-02-10  0:34       ` Alan
2007-02-10 10:47   ` bert hubert
2007-02-10 18:19     ` Davide Libenzi
2007-02-11  0:56   ` David Miller
2007-02-11  2:49     ` Linus Torvalds
2007-02-14 16:42       ` James Antill
2007-02-03 14:05 [PATCH 2 of 4] Introduce i386 fibril scheduling linux
2007-02-06 13:43 Al Boldi

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