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Re: vm lock contention reduction
- To: Andrew Morton <akpm@zip.com.au>
- Subject: Re: vm lock contention reduction
- From: William Lee Irwin III <wli@holomorphy.com>
- Date: Sun, 7 Jul 2002 17:38:27 -0700
- Cc: Andrea Arcangeli <andrea@suse.de>,Linus Torvalds <torvalds@transmeta.com>,Rik van Riel <riel@conectiva.com.br>,"linux-mm@kvack.org" <linux-mm@kvack.org>,"Martin J. Bligh" <Martin.Bligh@us.ibm.com>
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- Mail-Followup-To: William Lee Irwin III <wli@holomorphy.com>,Andrew Morton <akpm@zip.com.au>, Andrea Arcangeli <andrea@suse.de>,Linus Torvalds <torvalds@transmeta.com>,Rik van Riel <riel@conectiva.com.br>,"linux-mm@kvack.org" <linux-mm@kvack.org>,"Martin J. Bligh" <Martin.Bligh@us.ibm.com>
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- Sender: Rik van Riel <riel@nl.linux.org>
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On Sat, Jul 06, 2002 at 07:50:41PM -0700, Andrew Morton wrote:
> Any time you have one of these pages in use, the process gets
> pinned onto the current CPU. If we run out of per-cpu kmaps,
> just fall back to traditional kmap().
This is not particularly difficult, it only requires a depth counter
and a saved cpumask for when it becomes unpinned again.
Cheers,
Bill
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