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Subject: Re: [PATCH 0/3] Add OMAP hardware spinlock misc driver
From: Peter Zijlstra <peterz@infradead.org>
To: Ohad Ben-Cohen <ohad@wizery.com>
Cc: linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org,
        Greg KH <greg@kroah.com>, Tony Lindgren <tony@atomide.com>,
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        Grant Likely <grant.likely@secretlab.ca>,
        Hari Kanigeri <h-kanigeri2@ti.com>, Suman Anna <s-anna@ti.com>
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Date: Mon, 18 Oct 2010 14:46:55 +0200
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On Mon, 2010-10-18 at 09:44 +0200, Ohad Ben-Cohen wrote:
> OMAP4 introduces a Spinlock hardware module, which provides hardware
> assistance for synchronization and mutual exclusion between heterogeneous
> processors and those not operating under a single, shared operating system
> (e.g. OMAP4 has dual Cortex-A9, dual Cortex-M3 and a C64x+ DSP). 

I just have to ask... was it really easier to build silicon than to
agree on a spinlock ABI?