From: Manfred Spraul <manfred@colorfullife.com>
To: johannes@erdfelt.com, linux-kernel@vger.kernel.org
Subject: Re: Inefficient PCI DMA usage (was: [experimental patch] UHCI updates)
Date: Sat, 20 Jan 2001 19:00:21 +0100 [thread overview]
Message-ID: <3A69D235.F1EE4CA6@colorfullife.com> (raw)
>
> TD's are around 32 bytes big (actually, they may be 48 or even 64 now, I
> haven't checked recently). That's a waste of space for an entire page.
>
> However, having every driver implement it's own slab cache seems a
> complete waste of time when we already have the code to do so in
> mm/slab.c. It would be nice if we could extend the generic slab code to
> understand the PCI DMA API for us.
>
I missed the beginning of the thread:
What are the exact requirements for TD's?
I have 3 tiny updates for mm/slab.c that I'll send to Linus as soon as
2.4 has stabilized a bit more, perhaps I can integrate the code for USB.
--
Manfred
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next reply other threads:[~2001-01-20 18:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-20 18:00 Manfred Spraul [this message]
2001-01-20 18:08 ` Inefficient PCI DMA usage (was: [experimental patch] UHCI updates) Johannes Erdfelt
2001-01-20 23:15 ` Russell King
2001-01-21 8:36 ` Manfred Spraul
2001-01-21 10:51 ` Russell King
2001-01-21 11:49 ` Manfred Spraul
2001-01-21 17:37 ` Johannes Erdfelt
2001-01-21 23:11 ` Russell King
[not found] <3A691043.F18CA6CA@megapathdsl.net>
2001-01-20 5:38 ` Johannes Erdfelt
2001-01-20 8:28 ` Russell King
2001-01-20 17:34 ` Johannes Erdfelt
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