diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2007-07-20 21:39:47 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-07-20 21:42:15 +0200 |
| commit | 8e68e2f248332a9c3fd4f08258f488c209bd3e0c (patch) | |
| tree | 3001a5a8ce652ffdea97b2f89569447830b9059a /arch/powerpc/platforms/cell/spu_syscalls.c | |
| parent | 3ad216cae837d90415c605e1149e6fd88f51c973 (diff) | |
[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>
Diffstat (limited to 'arch/powerpc/platforms/cell/spu_syscalls.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_syscalls.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/cell/spu_syscalls.c b/arch/powerpc/platforms/cell/spu_syscalls.c index 261b507a901a..dd2c6688c8aa 100644 --- a/arch/powerpc/platforms/cell/spu_syscalls.c +++ b/arch/powerpc/platforms/cell/spu_syscalls.c @@ -34,14 +34,27 @@ struct spufs_calls spufs_calls = { * this file is not used and the syscalls directly enter the fs code */ asmlinkage long sys_spu_create(const char __user *name, - unsigned int flags, mode_t mode) + unsigned int flags, mode_t mode, int neighbor_fd) { long ret; struct module *owner = spufs_calls.owner; + struct file *neighbor; + int fput_needed; ret = -ENOSYS; if (owner && try_module_get(owner)) { - ret = spufs_calls.create_thread(name, flags, mode); + if (flags & SPU_CREATE_AFFINITY_SPU) { + neighbor = fget_light(neighbor_fd, &fput_needed); + if (neighbor) { + ret = spufs_calls.create_thread(name, flags, + mode, neighbor); + fput_light(neighbor, fput_needed); + } + } + else { + ret = spufs_calls.create_thread(name, flags, + mode, NULL); + } module_put(owner); } return ret; |