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author | Arnd Bergmann <arnd@arndb.de> | 2006-10-04 17:26:15 +0200 |
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committer | Paul Mackerras <paulus@samba.org> | 2006-10-05 09:21:01 +1000 |
commit | 6263203ed6e9ff107129a1ebe613290b342a4465 (patch) | |
tree | dc7d68b783fed2b5ffcb8905c62086ebe078368b /arch/powerpc/platforms/cell/spufs/syscalls.c | |
parent | 9add11daeee2f6d69f6b86237f197824332a4a3b (diff) | |
download | op-kernel-dev-6263203ed6e9ff107129a1ebe613290b342a4465.zip op-kernel-dev-6263203ed6e9ff107129a1ebe613290b342a4465.tar.gz |
[POWERPC] spufs: Add infrastructure needed for gang scheduling
Add the concept of a gang to spufs as a new type of object.
So far, this has no impact whatsover on scheduling, but makes
it possible to add that later.
A new type of object in spufs is now a spu_gang. It is created
with the spu_create system call with the flags argument set
to SPU_CREATE_GANG (0x2). Inside of a spu_gang, it
is then possible to create spu_context objects, which until
now was only possible at the root of spufs.
There is a new member in struct spu_context pointing to
the spu_gang it belongs to, if any. The spu_gang maintains
a list of spu_context structures that are its children.
This information can then be used in the scheduler in the
future.
There is still a bug that needs to be resolved in this
basic infrastructure regarding the order in which objects
are removed. When the spu_gang file descriptor is closed
before the spu_context descriptors, we leak the dentry
and inode for the gang. Any ideas how to cleanly solve
this are appreciated.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/syscalls.c')
-rw-r--r-- | arch/powerpc/platforms/cell/spufs/syscalls.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/syscalls.c b/arch/powerpc/platforms/cell/spufs/syscalls.c index ef33a0c..a6d1ae4 100644 --- a/arch/powerpc/platforms/cell/spufs/syscalls.c +++ b/arch/powerpc/platforms/cell/spufs/syscalls.c @@ -90,7 +90,7 @@ asmlinkage long sys_spu_create(const char __user *pathname, ret = path_lookup(tmp, LOOKUP_PARENT| LOOKUP_OPEN|LOOKUP_CREATE, &nd); if (!ret) { - ret = spufs_create_thread(&nd, flags, mode); + ret = spufs_create(&nd, flags, mode); path_release(&nd); } putname(tmp); |