[RFC PATCH 6/8] ARM: smp: Use generic API for ipi

On Mon, Jun 18, 2012 at 01:30:09PM +0200, Michal Simek wrote:

Support dynamic IPI allocation. It supports cases
where user wants to use IPI for communication among cpus
and setup own handler for it.

New functions set_ipi_handler/clear_ipi_handler are used
for dynamic allocation.

For what purpose?