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authorSonny Rao <sonnyrao@linux.vnet.ibm.com>2008-07-08 15:45:11 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-15 12:24:55 +1000
commitfe9e8d53772b5ea9ccf8ea4e8f0f009a6885eb70 (patch)
treedad2ae7dfd7726794dd6eb3444bf0c99e582c50c /arch/powerpc
parentb3fcaaa8a6359e9ed623ed4c1d2d48c79eed4648 (diff)
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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/configs/pseries_defconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index adaa05fb047..fe6ffa683d7 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -946,6 +946,7 @@ CONFIG_HVC_DRIVER=y
CONFIG_HVC_CONSOLE=y
CONFIG_HVC_RTAS=y
CONFIG_HVCS=m
+CONFIG_IBM_BSR=m
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
CONFIG_GEN_RTC=y