linux-kernel - Re: [PATCH v3 0/4] Introduce hardware spinlock framework

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Message-ID: <AANLkTin1fd=Kei7Fo6G+uR+270HdTkc71fvsA6qjBjcA@mail.gmail.com>
Date:	Tue, 14 Dec 2010 16:31:36 +0200
From:	Ohad Ben-Cohen <ohad@...ery.com>
To:	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Cc:	akpm@...ux-foundation.org, Greg KH <greg@...ah.com>,
	Tony Lindgren <tony@...mide.com>,
	Benoit Cousson <b-cousson@...com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Hari Kanigeri <h-kanigeri2@...com>, Suman Anna <s-anna@...com>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v3 0/4] Introduce hardware spinlock framework

Hi Greg, Tony,

On Sat, Dec 4, 2010 at 1:50 AM, Ohad Ben-Cohen <ohad@...ery.com> wrote:
> OMAP4 introduces a Hardware Spinlock device, 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).
>
> The intention of this hardware device is to allow remote processors,
> that have no alternative mechanism to accomplish synchronization and mutual
> exclusion operations, to share resources (such as memory and/or any other
> hardware resource).
>
> This patchset adds hwspinlock framework that makes it possible
> for drivers to use those hwspinlock devices and stay platform-independent.

...

>  Documentation/hwspinlock.txt               |  299 +++++++++++++++
>  arch/arm/mach-omap2/Makefile               |    1 +
>  arch/arm/mach-omap2/hwspinlock.c           |   63 ++++
>  arch/arm/mach-omap2/omap_hwmod_44xx_data.c |   64 ++++
>  drivers/Kconfig                            |    2 +
>  drivers/Makefile                           |    1 +
>  drivers/hwspinlock/Kconfig                 |   22 ++
>  drivers/hwspinlock/Makefile                |    6 +
>  drivers/hwspinlock/hwspinlock.h            |   61 +++
>  drivers/hwspinlock/hwspinlock_core.c       |  557 ++++++++++++++++++++++++++++
>  drivers/hwspinlock/omap_hwspinlock.c       |  231 ++++++++++++
>  include/linux/hwspinlock.h                 |  298 +++++++++++++++
>  12 files changed, 1605 insertions(+), 0 deletions(-)

Can you please have a look and say if this looks OK ?

If it does, where would you prefer this to go through ?

Thanks,
Ohad.
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