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

Ohad Ben-Cohen
2010-12-14T14:31:36Z

Hi Greg, Tony,

On Sat, Dec 4, 2010 at 1:50 AM, Ohad Ben-Cohen <ohad@wizery.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.