linux-kernel - Re: Serious problem with ticket spinlocks on ia64

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Message-ID: <20100910025523.GC31280@redhat.com>
Date:	Thu, 9 Sep 2010 22:55:24 -0400
From:	Dave Jones <davej@...hat.com>
To:	Petr Tesarik <ptesarik@...e.cz>
Cc:	Tony Luck <tony.luck@...el.com>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Serious problem with ticket spinlocks on ia64

On Fri, Sep 03, 2010 at 04:35:23PM +0200, Petr Tesarik wrote:
 
 > I didn't see values around zero on any other CPU in the system. So, either 
 > there is something seriously broken in hardware, or I made a silly mistake in 
 > the monitoring code.

 ...

 > 	memset(dbr, sizeof dbr, 0);
                    ^^^^^^^^^^^^^
swapped arguments.  Perhaps unrelated to the problem, but still silly :)

	Dave

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