[CELL] spufs: extension of spu_create to support affinity definition

This patch adds support for additional flags at spu_create, which relate
to the establishment of affinity between contexts and contexts to memory.
A fourth, optional, parameter is supported. This parameter represent
a affinity neighbor of the context being created, and is used when defining
SPU-SPU affinity.
Affinity is represented as a doubly linked list of spu_contexts.

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

2 files changed, 7 insertions, 3 deletions

diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 18e558bef98e..24f352da2869 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -196,6 +196,7 @@ extern struct cbe_spu_info cbe_spu_info[];
 
 struct spu *spu_alloc(void);
 struct spu *spu_alloc_node(int node);
+struct spu *spu_alloc_spu(struct spu *spu);
 void spu_free(struct spu *spu);
 int spu_irq_class_0_bottom(struct spu *spu);
 int spu_irq_class_1_bottom(struct spu *spu);
@@ -227,7 +228,8 @@ extern long spu_sys_callback(struct spu_syscall_block *s);
 struct file;
 extern struct spufs_calls {
         asmlinkage long (*create_thread)(const char __user *name,
-                                        unsigned int flags, mode_t mode);
+                                        unsigned int flags, mode_t mode,
+                                        struct file *neighbor);
         asmlinkage long (*spu_run)(struct file *filp, __u32 __user *unpc,
                                                 __u32 __user *ustatus);
         struct module *owner;
@@ -254,8 +256,10 @@ struct spu_coredump_calls {
 #define SPU_CREATE_GANG                 0x0002
 #define SPU_CREATE_NOSCHED              0x0004
 #define SPU_CREATE_ISOLATE              0x0008
+#define SPU_CREATE_AFFINITY_SPU         0x0010
+#define SPU_CREATE_AFFINITY_MEM         0x0020
 
-#define SPU_CREATE_FLAG_ALL             0x000f /* mask of all valid flags */
+#define SPU_CREATE_FLAG_ALL             0x003f /* mask of all valid flags */
 
 
 #ifdef CONFIG_SPU_FS_MODULE
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 7a8b1e3322e0..61def7c8fbb3 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -549,7 +549,7 @@ asmlinkage long sys_inotify_rm_watch(int fd, u32 wd);
 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
                                  __u32 __user *ustatus);
 asmlinkage long sys_spu_create(const char __user *name,
-                unsigned int flags, mode_t mode);
+                unsigned int flags, mode_t mode, int fd);
 
 asmlinkage long sys_mknodat(int dfd, const char __user * filename, int mode,
                             unsigned dev);