From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Paul Mackerras <paulus@samba.org>, Andrew Morton <akpm@osdl.org>,
clameter@sgi.com,
Linux Kernel list <linux-kernel@vger.kernel.org>,
linux-ia64@vger.kernel.org, Anton Blanchard <anton@samba.org>
Subject: Re: Page fault scalability patch V18: Drop first acquisition of ptl
Date: Thu, 03 Mar 2005 18:44:24 +1100 [thread overview]
Message-ID: <4226C058.4080108@yahoo.com.au> (raw)
In-Reply-To: <1109831428.5680.187.camel@gaston>
Benjamin Herrenschmidt wrote:
> On Fri, 2005-03-04 at 04:19 +1100, Nick Piggin wrote:
>
>
>>You don't want to do that for all architectures, as I said earlier.
>>eg. i386 can concurrently set the dirty bit with the MMU (which won't
>>honour the lock).
>>
>>So you then need an atomic lock, atomic pte operations, and atomic
>>unlock where previously you had only the atomic pte operation. This is
>>disastrous for performance.
>
>
> Of course, but I was answering to David about sparc64 which uses
> software TLB load :)
>
Oh sorry, I completely misunderstood what you said... and the
context in which you said it :P
next prev parent reply other threads:[~2005-03-03 7:44 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-02 3:49 Page fault scalability patch V18: Overview Christoph Lameter
2005-03-02 3:50 ` Page fault scalability patch V18: atomic pte ops, pte_cmpxchg and pte_xchg Christoph Lameter
2005-03-02 3:51 ` Page fault scalability patch V18: abstract rss counter ops Christoph Lameter
2005-03-02 3:51 ` Page fault scalability patch V18: Drop first acquisition of ptl Christoph Lameter
2005-03-03 1:45 ` Andrew Morton
2005-03-03 2:13 ` Christoph Lameter
2005-03-03 2:55 ` Andrew Morton
2005-03-03 3:17 ` Christoph Lameter
2005-03-03 4:14 ` Andrew Morton
2005-03-03 4:27 ` Christoph Lameter
2005-03-03 4:56 ` Andrew Morton
2005-03-03 5:17 ` Christoph Lameter
2005-03-03 5:37 ` Andrew Morton
2005-03-03 5:48 ` Christoph Lameter
2005-03-03 6:13 ` Christoph Lameter
2005-03-03 6:20 ` Andrew Morton
2005-03-03 16:54 ` Christoph Lameter
2005-03-03 21:20 ` Andrew Morton
2005-03-03 22:14 ` Christoph Lameter
2005-03-04 16:44 ` Christoph Lameter
2005-03-04 17:09 ` Hugh Dickins
2005-03-04 18:29 ` Christoph Lameter
2005-03-04 19:08 ` Hugh Dickins
2005-03-31 6:55 ` Avoid spurious page faults by avoiding pte_clear -> set pte Christoph Lameter
2005-03-04 16:46 ` Page fault scalability patch V18: Drop first acquisition of ptl Christoph Lameter
2005-03-03 5:00 ` Paul Mackerras
2005-03-03 5:19 ` Christoph Lameter
2005-03-03 5:38 ` David S. Miller
2005-03-03 5:51 ` Christoph Lameter
2005-03-03 6:11 ` Benjamin Herrenschmidt
2005-03-03 16:52 ` Christoph Lameter
2005-03-03 5:54 ` Benjamin Herrenschmidt
2005-03-03 17:19 ` Nick Piggin
2005-03-03 6:30 ` Benjamin Herrenschmidt
2005-03-03 7:44 ` Nick Piggin [this message]
2005-03-03 17:43 ` David S. Miller
2005-03-03 5:24 ` Nick Piggin
2005-03-02 3:52 ` Page fault scalability patch V18: No page table lock in do_anonymous_page Christoph Lameter
2005-03-04 2:18 ` Page fault scalability patch V18: Overview Darren Williams
2005-03-04 2:47 ` Darren Williams
2005-03-04 16:15 ` Christoph Lameter
2005-03-06 21:49 ` Darren Williams
2005-03-06 23:59 ` Christoph Lameter
2005-03-07 3:32 ` Darren Williams
2005-03-08 4:03 ` Christoph Lameter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4226C058.4080108@yahoo.com.au \
--to=nickpiggin@yahoo.com.au \
--cc=akpm@osdl.org \
--cc=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=clameter@sgi.com \
--cc=davem@davemloft.net \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox