From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [git pull] core/percpu for v2.6.27
Date: Mon, 14 Jul 2008 15:27:06 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.1.10.0807141525000.2944@woody.linux-foundation.org> (raw)
In-Reply-To: <20080714143413.GA19134@elte.hu>
On Mon, 14 Jul 2008, Ingo Molnar wrote:
>
> Please pull the latest core/percpu git tree from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git core/percpu
Can you explain what this does and who needs it? The percpu_xchg() looks
particularly pointless, since it's always a locked SMP-safe instruction on
x86, so a nonpreemptible load+store will likely be much faster.
Linus
next prev parent reply other threads:[~2008-07-14 22:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-14 14:34 Ingo Molnar
2008-07-14 22:27 ` Linus Torvalds [this message]
2008-07-15 15:46 ` Jeremy Fitzhardinge
2008-07-15 21:00 ` Ingo Molnar
2008-07-15 21:26 ` Mike Travis
2008-07-15 21:46 ` H. Peter Anvin
2008-07-18 22:17 ` Ingo Molnar
2008-07-18 22:54 ` Mike Travis
2008-07-25 15:18 ` Mike Travis
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=alpine.LFD.1.10.0807141525000.2944@woody.linux-foundation.org \
--to=torvalds@linux-foundation.org \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/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
all inboxes | Powered by JetHome®