On Apr 11, 2008, at 11:04 AM, Matt Thomas wrote:
think about device intr counts which will be protected by a spin mutex.those won't need per-cpu instances.
The problem is getting a consistent view of the value when reading them out to user space. Perhaps one solution is for global- interlocked evcnts to provide a pointer to a mutex that can be acquired when the value is read out.
-- thorpej