[CELL] cell: add per BE structure with info about its SPUs

Addition of a spufs-global "cbe_info" array. Each entry contains information
about one Cell/B.E. node, namelly:
* list of spus (both free and busy spus are in this list);
* list of free spus (replacing the static spu_list from spu_base.c)
* number of spus;
* number of reserved (non scheduleable) spus.

SPE affinity implementation actually requires only access to one spu per
BE node (since it implements its own pointer to walk through the other spus
of the ring) and the number of scheduleable spus (n_spus - non_sched_spus)
However having this more general structure can be useful for other
functionalities, concentrating per-cbe statistics / data.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 12442ac..2f2fe9f 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -122,6 +122,7 @@ struct spu {
 	struct spu_problem __iomem *problem;
 	struct spu_priv2 __iomem *priv2;
 	struct list_head list;
+	struct list_head cbe_list;
 	struct list_head sched_list;
 	struct list_head full_list;
 	int number;
@@ -181,6 +182,15 @@ struct spu {
 	} stats;
 };
 
+struct cbe_spu_info {
+	struct list_head spus;
+	struct list_head free_spus;
+	int n_spus;
+	atomic_t reserved_spus;
+};
+
+extern struct cbe_spu_info cbe_spu_info[];
+
 struct spu *spu_alloc(void);
 struct spu *spu_alloc_node(int node);
 void spu_free(struct spu *spu);