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authorBrian King <brking@linux.vnet.ibm.com>2011-05-04 16:01:20 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-05-04 16:02:21 +1000
commit9ee820fa005254dfc816330f6654f14dcb2beee1 (patch)
tree1d36b17ec6a4c56dd24f9be2f7f31e6321040ed0 /arch/powerpc/kernel/rtas.c
parent7707e4110e5692fe85e7e6c471c9bb2a9254d313 (diff)
powerpc/pseries: Add page coalescing support
Adds support for page coalescing, which is a feature on IBM Power servers which allows for coalescing identical pages between logical partitions. Hint text pages as coalesce candidates, since they are the most likely pages to be able to be coalesced between partitions. This patch also exports some page coalescing statistics available from firmware via lparcfg. [BenH: Moved a couple of things around to fix compile problems] Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/rtas.c')
-rw-r--r--arch/powerpc/kernel/rtas.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index f48446635c8..271ff6318ed 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -42,6 +42,7 @@
#include <asm/time.h>
#include <asm/mmu.h>
#include <asm/topology.h>
+#include <asm/pSeries_reconfig.h>
struct rtas_t rtas = {
.lock = __ARCH_SPIN_LOCK_UNLOCKED
@@ -731,6 +732,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
atomic_set(&data->error, rc);
start_topology_update();
+ pSeries_coalesce_init();
if (wake_when_done) {
atomic_set(&data->done, 1);