2 * SPU file system -- system call stubs
4 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
6 * Author: Arnd Bergmann <arndb@de.ibm.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/file.h>
23 #include <linux/module.h>
24 #include <linux/syscalls.h>
28 struct spufs_calls spufs_calls
= {
32 /* These stub syscalls are needed to have the actual implementation
33 * within a loadable module. When spufs is built into the kernel,
34 * this file is not used and the syscalls directly enter the fs code */
36 asmlinkage
long sys_spu_create(const char __user
*name
,
37 unsigned int flags
, mode_t mode
, int neighbor_fd
)
40 struct module
*owner
= spufs_calls
.owner
;
41 struct file
*neighbor
;
45 if (owner
&& try_module_get(owner
)) {
46 if (flags
& SPU_CREATE_AFFINITY_SPU
) {
47 neighbor
= fget_light(neighbor_fd
, &fput_needed
);
49 ret
= spufs_calls
.create_thread(name
, flags
,
51 fput_light(neighbor
, fput_needed
);
55 ret
= spufs_calls
.create_thread(name
, flags
,
63 asmlinkage
long sys_spu_run(int fd
, __u32 __user
*unpc
, __u32 __user
*ustatus
)
68 struct module
*owner
= spufs_calls
.owner
;
71 if (owner
&& try_module_get(owner
)) {
73 filp
= fget_light(fd
, &fput_needed
);
75 ret
= spufs_calls
.spu_run(filp
, unpc
, ustatus
);
76 fput_light(filp
, fput_needed
);
83 int register_spu_syscalls(struct spufs_calls
*calls
)
85 if (spufs_calls
.owner
)
88 spufs_calls
.create_thread
= calls
->create_thread
;
89 spufs_calls
.spu_run
= calls
->spu_run
;
91 spufs_calls
.owner
= calls
->owner
;
94 EXPORT_SYMBOL_GPL(register_spu_syscalls
);
96 void unregister_spu_syscalls(struct spufs_calls
*calls
)
98 BUG_ON(spufs_calls
.owner
!= calls
->owner
);
99 spufs_calls
.owner
= NULL
;
101 EXPORT_SYMBOL_GPL(unregister_spu_syscalls
);