From: William Lee Irwin III <wli@holomorphy.com>
To: Andi Kleen <ak@suse.de>
Cc: "Van Maren, Kevin" <kevin.vanmaren@unisys.com>,
linux-kernel@vger.kernel.org
Subject: Re: [Linux-ia64] Linux kernel deadlock caused by spinlock bug
Date: Tue, 30 Jul 2002 09:27:06 -0700 [thread overview]
Message-ID: <20020730162706.GA25038@holomorphy.com> (raw)
In-Reply-To: <p73vg6xs5nr.fsf@oldwotan.suse.de>
On Tue, Jul 30, 2002 at 03:32:08PM +0200, Andi Kleen wrote:
> One such way would be a variant of queued locks, like John Stultz's
> http://oss.software.ibm.com/developer/opensource/linux/patches/?patch_id=218
> These are usually needed for fairness even with plain spinlocks on NUMA
> boxes in any case (so if your box is NUMA then you will need it anyways)
> They only exist for plain spinlocks yet, but I guess they could be extended
> to readlocks.
I should point out plenty of stock PC hardware gets NUMA effects.
For some reason there's not much documentation and/or publicity about
it, though. I wonder why... (don't answer, I know why and know I'm fscked)
Cheers,
Bill
next prev parent reply other threads:[~2002-07-30 16:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3FAD1088D4556046AEC48D80B47B478C0101F3AE@usslc-exch-4.slc.unisys.com.suse.lists.linux.kernel>
2002-07-30 13:32 ` [Linux-ia64] Linux kernel deadlock caused by spinlock bug Andi Kleen
2002-07-30 16:27 ` William Lee Irwin III [this message]
2002-07-30 21:15 Van Maren, Kevin
-- strict thread matches above, loose matches on Subject: below --
2002-07-30 17:06 Van Maren, Kevin
2002-07-30 17:44 ` William Lee Irwin III
2002-07-29 21:29 Van Maren, Kevin
2002-07-29 21:48 ` David Mosberger
2002-07-29 21:05 Van Maren, Kevin
2002-07-29 21:18 ` Matthew Wilcox
2002-07-30 15:58 ` Russell Lewis
2002-07-30 16:56 ` Richard B. Johnson
2002-07-30 17:02 ` Russell Lewis
2002-07-30 17:14 ` Richard B. Johnson
2002-07-30 22:48 ` Sean Griffin
2002-07-31 17:37 ` Russell Lewis
2002-07-29 20:37 Van Maren, Kevin
2002-07-29 20:46 ` Matthew Wilcox
2002-07-29 21:05 ` Van Maren, Kevin
2002-07-29 21:18 ` Matthew Wilcox
2002-07-29 21:29 ` Van Maren, Kevin
2002-07-29 21:48 ` David Mosberger
2002-07-30 15:58 ` Russell Lewis
2002-07-30 16:56 ` Richard B. Johnson
2002-07-30 22:48 ` Sean Griffin
2002-07-31 17:37 ` Russell Lewis
2002-07-29 20:37 Van Maren, Kevin
2002-07-29 20:46 ` [Linux-ia64] " Matthew Wilcox
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