1 #include <linux/file.h>
3 #include <linux/module.h>
4 #include <linux/mount.h>
5 #include <linux/namei.h>
7 #include <asm/uaccess.h>
12 * sys_spu_run - run code loaded into an SPU
14 * @unpc: next program counter for the SPU
15 * @ustatus: status of the SPU
17 * This system call transfers the control of execution of a
18 * user space thread to an SPU. It will return when the
19 * SPU has finished executing or when it hits an error
20 * condition and it will be interrupted if a signal needs
21 * to be delivered to a handler in user space.
23 * The next program counter is set to the passed value
24 * before the SPU starts fetching code and the user space
25 * pointer gets updated with the new value when returning
28 * The status value returned from spu_run reflects the
29 * value of the spu_status register after the SPU has stopped.
32 long do_spu_run(struct file *filp, __u32 __user *unpc, __u32 __user *ustatus)
35 struct spufs_inode_info *i;
39 if (get_user(npc, unpc) || get_user(status, ustatus))
42 /* check if this file was created by spu_create */
44 if (filp->f_op != &spufs_context_fops)
47 i = SPUFS_I(filp->f_dentry->d_inode);
48 ret = spufs_run_spu(filp, i->i_ctx, &npc, &status);
50 if (put_user(npc, unpc) || put_user(status, ustatus))
57 asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, __u32 __user *ustatus)
64 filp = fget_light(fd, &fput_needed);
66 ret = do_spu_run(filp, unpc, ustatus);
67 fput_light(filp, fput_needed);
74 asmlinkage long sys_spu_create(const char __user *pathname,
75 unsigned int flags, mode_t mode)
80 tmp = getname(pathname);
85 ret = path_lookup(tmp, LOOKUP_PARENT|
86 LOOKUP_OPEN|LOOKUP_CREATE, &nd);
88 ret = spufs_create_thread(&nd, flags, mode);
97 struct spufs_calls spufs_calls = {
98 .create_thread = sys_spu_create,
99 .spu_run = do_spu_run,
100 .owner = THIS_MODULE,