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

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Message-ID: <987664A83D2D224EAE907B061CE93D53015D91D645@orsmsx505.amr.corp.intel.com>
Date:	Fri, 27 Aug 2010 16:55:46 -0700
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Petr Tesarik <ptesarik@...e.cz>
CC:	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Hedi Berriche <hedi@....com>
Subject: RE: Serious problem with ticket spinlocks on ia64

> this fails so catastrophically

Interesting ... getting rid of some of the fancy asm bits
(replacing both the ld4.c.nc and the ld2.bias with simple
"serve = *p" and "tmp = *p") makes this run a lot better.

-Tony

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