From: David Brownell <david-b@pacbell.net>
To: "Adam J. Richter" <adam@yggdrasil.com>
Cc: James.Bottomley@steeleye.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] generic device DMA (dma_pool update)
Date: Tue, 31 Dec 2002 15:35:28 -0800 [thread overview]
Message-ID: <3E1229C0.2010000@pacbell.net> (raw)
In-Reply-To: 200212312202.OAA10841@adam.yggdrasil.com
Adam J. Richter wrote:
> I think that the term "pool" is more descriptively used by
> mempool and more misleadningly used by the pci_pool code, as there is
> no guaranteed pool being reserved in the pci_pool code. Alas, I don't
> have a good alternative term to suggest at the moment.
FWIW pci_pool predates mempool by quite a bit (2.4.early vs 2.5.later),
and I don't think I've noticed any correlation between allocation using
the "pool" word and reserving memory ... so I thought it was "mempool"
that clashed. No big deal IMO, "all the good words are taken".
I seem to recall it was a portability issue that made pci_pool never
release pages once it allocates them ... some platform couldn't cope
with pci_free_consistent() being called in_interrupt(). In practice
that seems to have been a good enough reservation scheme so far.
- Dave
next prev parent reply other threads:[~2002-12-31 23:23 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-31 22:02 [PATCH] generic device DMA (dma_pool update) Adam J. Richter
2002-12-31 22:41 ` Andrew Morton
2002-12-31 23:23 ` David Brownell
2002-12-31 23:27 ` Andrew Morton
2002-12-31 23:44 ` David Brownell
2002-12-31 23:47 ` James Bottomley
2003-01-01 17:10 ` James Bottomley
2002-12-31 23:35 ` David Brownell [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-01-02 22:07 Adam J. Richter
2003-01-03 0:20 ` Russell King
2003-01-03 4:50 ` David Brownell
2003-01-03 6:11 ` David Brownell
2003-01-03 6:46 ` David Brownell
2003-01-03 6:52 ` William Lee Irwin III
2003-01-02 17:04 Adam J. Richter
2003-01-02 4:13 Adam J. Richter
2003-01-02 16:41 ` James Bottomley
2003-01-02 18:26 ` David Brownell
2003-01-01 19:21 Adam J. Richter
2003-01-01 19:48 ` James Bottomley
2003-01-02 2:11 ` David Brownell
2003-01-01 0:02 Adam J. Richter
2002-12-31 23:38 Adam J. Richter
2002-12-27 21:40 [RFT][PATCH] generic device DMA implementation James Bottomley
2002-12-28 1:56 ` David Brownell
2002-12-30 23:11 ` [PATCH] generic device DMA (dma_pool update) David Brownell
2002-12-31 15:00 ` James Bottomley
2002-12-31 17:04 ` David Brownell
2002-12-31 17:23 ` James Bottomley
2002-12-31 18:11 ` David Brownell
2002-12-31 18:44 ` James Bottomley
2002-12-31 19:29 ` David Brownell
2002-12-31 19:50 ` James Bottomley
2002-12-31 21:17 ` David Brownell
2002-12-31 16:36 ` James Bottomley
2002-12-31 17:32 ` David Brownell
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