From: Kiran <geekazoid@phreaker.net>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org, torvalds@transmeta.com
Subject: Re: Patch 2.5.25: Ensure xtime_lock and timerlist_lock are on difft cachelines
Date: Fri, 26 Jul 2002 14:53:44 +0530 [thread overview]
Message-ID: <20020726145344.A18568@phreaker.net> (raw)
In-Reply-To: <20020726080211.3E71E4824@lists.samba.org>; from rusty@rustcorp.com.au on Fri, Jul 26, 2002 at 05:56:19PM +1000
On Fri, Jul 26, 2002 at 05:56:19PM +1000, Rusty Russell wrote:
> In message <20020726125605.A2822@phreaker.net> you write:
> > This patch was not meant to be a definitive fix for do_gettimeofday.
> > I thought having diffrent locks on the same cacheline was bad. Atleast,
> > I don't think there'd be any negative performance impact due to my patch.
> > Pls correct me if I am wrong.
>
> Did you ever wonder why we don't declare spinlock to be ____cacheline_aligned?
Yep...and for long enough...(I think..)..or there'd have been an RFC
or a stupid question to lkml sometime from me :)
> While it's probably justified in this case, you pay for it in a slight
> increase in size...
>
I thought you were of the opinion that "memory is cheap" ;-)
-Kiran
next prev parent reply other threads:[~2002-07-26 9:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-25 15:15 Patch 2.5.25: Ensure xtime_lock and timerlist_lock are on difft cachelines Ravikiran G Thirumalai
2002-07-26 6:24 ` Rusty Russell
2002-07-26 7:26 ` Kiran
2002-07-26 7:56 ` Rusty Russell
2002-07-26 9:23 ` Kiran [this message]
2002-07-27 4:17 ` Rusty Russell
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=20020726145344.A18568@phreaker.net \
--to=geekazoid@phreaker.net \
--cc=linux-kernel@vger.kernel.org \
--cc=rusty@rustcorp.com.au \
--cc=torvalds@transmeta.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.