From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: Andrey Savochkin <saw@sawoct.com>,
torvalds@osdl.org, dev@sw.ru, linux-kernel@vger.kernel.org,
xemul@sw.ru, st@sw.ru, discuss@x86-64.org
Subject: Re: SMP syncronization on AMD processors (broken?)
Date: Tue, 11 Oct 2005 03:20:27 +0200 [thread overview]
Message-ID: <200510110320.28302.ak@suse.de> (raw)
In-Reply-To: <20051010175920.21018fac.akpm@osdl.org>
On Tuesday 11 October 2005 02:59, Andrew Morton wrote:
> > I'm not advocating for changing spinlock implementation, it's just a
> > thought...
>
> It would make sense in these cases if there was some primitive which we
> could call which says "hey, I expect+want another CPU to grab this lock in
> preference to this CPU".
I just don't know how to implement such a primitive given the guarantees
of the x86 architecture. It might be possible to do something that
works on specific CPUs, but that will likely break later.
-Andi
next prev parent reply other threads:[~2005-10-11 1:20 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-06 13:05 SMP syncronization on AMD processors (broken?) Kirill Korotaev
2005-10-06 13:14 ` linux-os (Dick Johnson)
2005-10-06 13:19 ` Arjan van de Ven
2005-10-06 13:32 ` Andrey Savochkin
2005-10-06 14:22 ` Arjan van de Ven
2005-10-06 13:32 ` Andi Kleen
2005-10-06 13:46 ` Andrey Savochkin
2005-10-06 14:02 ` [discuss] " Andi Kleen
2005-10-06 14:52 ` Linus Torvalds
2005-10-06 15:21 ` Andrey Savochkin
2005-10-06 15:46 ` Linus Torvalds
2005-10-11 0:59 ` Andrew Morton
2005-10-11 1:20 ` Andi Kleen [this message]
2005-10-11 3:20 ` Joe Seigh
2005-10-06 13:50 ` Eric Dumazet
2005-10-06 13:56 ` [discuss] " Andi Kleen
2005-10-06 14:10 ` Eric Dumazet
2005-10-06 14:11 ` Andi Kleen
2005-10-06 14:45 ` Linus Torvalds
2005-10-06 15:34 ` Hugh Dickins
2005-10-06 15:53 ` Eric Dumazet
2005-10-06 16:01 ` Linus Torvalds
2005-10-07 20:38 ` Joe Seigh
2005-10-07 20:57 ` Stephen Hemminger
2005-10-13 18:24 ` Joe Seigh
-- strict thread matches above, loose matches on Subject: below --
2005-10-08 9:31 Chuck Ebbert
2005-10-11 23:50 linux
2005-10-12 2:12 ` Christopher Friesen
2005-10-12 2:39 ` linux
2005-10-12 3:27 ` Kyle Moffett
2005-10-13 12:25 ` Kirill Korotaev
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