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Commit fe9e8d53 authored by Sonny Rao's avatar Sonny Rao Committed by Benjamin Herrenschmidt
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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: default avatarSonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: default avatarJoel Schopp <jschopp@austin.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent b3fcaaa8
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