tree dad2ae7dfd7726794dd6eb3444bf0c99e582c50c
parent b3fcaaa8a6359e9ed623ed4c1d2d48c79eed4648
author Sonny Rao <sonnyrao@linux.vnet.ibm.com> 1215495911 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1216088695 +1000

powerpc: Add driver for Barrier Synchronization Register

Adds a character driver for BSR support on IBM POWER systems including
Power5 and Power6.  The BSR is an optional processor facility not currently
implemented by any other processors.  It's primary purpose is fast large SMP
synchronization.  More details on the BSR are in comments to the code which
follows.  This patch adds BSR driver to pseries_defconfig.

Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>