167207b96SArnd Bergmann /* 267207b96SArnd Bergmann * SPU file system 367207b96SArnd Bergmann * 467207b96SArnd Bergmann * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 567207b96SArnd Bergmann * 667207b96SArnd Bergmann * Author: Arnd Bergmann <arndb@de.ibm.com> 767207b96SArnd Bergmann * 867207b96SArnd Bergmann * This program is free software; you can redistribute it and/or modify 967207b96SArnd Bergmann * it under the terms of the GNU General Public License as published by 1067207b96SArnd Bergmann * the Free Software Foundation; either version 2, or (at your option) 1167207b96SArnd Bergmann * any later version. 1267207b96SArnd Bergmann * 1367207b96SArnd Bergmann * This program is distributed in the hope that it will be useful, 1467207b96SArnd Bergmann * but WITHOUT ANY WARRANTY; without even the implied warranty of 1567207b96SArnd Bergmann * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1667207b96SArnd Bergmann * GNU General Public License for more details. 1767207b96SArnd Bergmann * 1867207b96SArnd Bergmann * You should have received a copy of the GNU General Public License 1967207b96SArnd Bergmann * along with this program; if not, write to the Free Software 2067207b96SArnd Bergmann * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 2167207b96SArnd Bergmann */ 2267207b96SArnd Bergmann 2367207b96SArnd Bergmann #include <linux/file.h> 2467207b96SArnd Bergmann #include <linux/fs.h> 2567207b96SArnd Bergmann #include <linux/backing-dev.h> 2667207b96SArnd Bergmann #include <linux/init.h> 2767207b96SArnd Bergmann #include <linux/ioctl.h> 2867207b96SArnd Bergmann #include <linux/module.h> 29346f4d3cSArnd Bergmann #include <linux/mount.h> 3067207b96SArnd Bergmann #include <linux/namei.h> 3167207b96SArnd Bergmann #include <linux/pagemap.h> 3267207b96SArnd Bergmann #include <linux/poll.h> 3367207b96SArnd Bergmann #include <linux/slab.h> 3467207b96SArnd Bergmann #include <linux/parser.h> 3567207b96SArnd Bergmann 360afacde3Sarnd@arndb.de #include <asm/prom.h> 3767207b96SArnd Bergmann #include <asm/semaphore.h> 3867207b96SArnd Bergmann #include <asm/spu.h> 39ccf17e9dSJeremy Kerr #include <asm/spu_priv1.h> 4067207b96SArnd Bergmann #include <asm/uaccess.h> 4167207b96SArnd Bergmann 4267207b96SArnd Bergmann #include "spufs.h" 4367207b96SArnd Bergmann 44e18b890bSChristoph Lameter static struct kmem_cache *spufs_inode_cache; 45c6730ed4SJeremy Kerr char *isolated_loader; 46*8b0d3121SSebastian Siewior static int isolated_loader_size; 4767207b96SArnd Bergmann 4867207b96SArnd Bergmann static struct inode * 4967207b96SArnd Bergmann spufs_alloc_inode(struct super_block *sb) 5067207b96SArnd Bergmann { 5167207b96SArnd Bergmann struct spufs_inode_info *ei; 5267207b96SArnd Bergmann 53e94b1766SChristoph Lameter ei = kmem_cache_alloc(spufs_inode_cache, GFP_KERNEL); 5467207b96SArnd Bergmann if (!ei) 5567207b96SArnd Bergmann return NULL; 566263203eSArnd Bergmann 576263203eSArnd Bergmann ei->i_gang = NULL; 586263203eSArnd Bergmann ei->i_ctx = NULL; 5943c2bbd9SChristoph Hellwig ei->i_openers = 0; 606263203eSArnd Bergmann 6167207b96SArnd Bergmann return &ei->vfs_inode; 6267207b96SArnd Bergmann } 6367207b96SArnd Bergmann 6467207b96SArnd Bergmann static void 6567207b96SArnd Bergmann spufs_destroy_inode(struct inode *inode) 6667207b96SArnd Bergmann { 6767207b96SArnd Bergmann kmem_cache_free(spufs_inode_cache, SPUFS_I(inode)); 6867207b96SArnd Bergmann } 6967207b96SArnd Bergmann 7067207b96SArnd Bergmann static void 71e18b890bSChristoph Lameter spufs_init_once(void *p, struct kmem_cache * cachep, unsigned long flags) 7267207b96SArnd Bergmann { 7367207b96SArnd Bergmann struct spufs_inode_info *ei = p; 7467207b96SArnd Bergmann 7567207b96SArnd Bergmann inode_init_once(&ei->vfs_inode); 7667207b96SArnd Bergmann } 7767207b96SArnd Bergmann 7867207b96SArnd Bergmann static struct inode * 7967207b96SArnd Bergmann spufs_new_inode(struct super_block *sb, int mode) 8067207b96SArnd Bergmann { 8167207b96SArnd Bergmann struct inode *inode; 8267207b96SArnd Bergmann 8367207b96SArnd Bergmann inode = new_inode(sb); 8467207b96SArnd Bergmann if (!inode) 8567207b96SArnd Bergmann goto out; 8667207b96SArnd Bergmann 8767207b96SArnd Bergmann inode->i_mode = mode; 8867207b96SArnd Bergmann inode->i_uid = current->fsuid; 8967207b96SArnd Bergmann inode->i_gid = current->fsgid; 9067207b96SArnd Bergmann inode->i_blocks = 0; 9167207b96SArnd Bergmann inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 9267207b96SArnd Bergmann out: 9367207b96SArnd Bergmann return inode; 9467207b96SArnd Bergmann } 9567207b96SArnd Bergmann 9667207b96SArnd Bergmann static int 9767207b96SArnd Bergmann spufs_setattr(struct dentry *dentry, struct iattr *attr) 9867207b96SArnd Bergmann { 9967207b96SArnd Bergmann struct inode *inode = dentry->d_inode; 10067207b96SArnd Bergmann 10167207b96SArnd Bergmann if ((attr->ia_valid & ATTR_SIZE) && 10267207b96SArnd Bergmann (attr->ia_size != inode->i_size)) 10367207b96SArnd Bergmann return -EINVAL; 10467207b96SArnd Bergmann return inode_setattr(inode, attr); 10567207b96SArnd Bergmann } 10667207b96SArnd Bergmann 10767207b96SArnd Bergmann 10867207b96SArnd Bergmann static int 10967207b96SArnd Bergmann spufs_new_file(struct super_block *sb, struct dentry *dentry, 11099ac48f5SArjan van de Ven const struct file_operations *fops, int mode, 11167207b96SArnd Bergmann struct spu_context *ctx) 11267207b96SArnd Bergmann { 11367207b96SArnd Bergmann static struct inode_operations spufs_file_iops = { 11467207b96SArnd Bergmann .setattr = spufs_setattr, 11567207b96SArnd Bergmann }; 11667207b96SArnd Bergmann struct inode *inode; 11767207b96SArnd Bergmann int ret; 11867207b96SArnd Bergmann 11967207b96SArnd Bergmann ret = -ENOSPC; 12067207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFREG | mode); 12167207b96SArnd Bergmann if (!inode) 12267207b96SArnd Bergmann goto out; 12367207b96SArnd Bergmann 12467207b96SArnd Bergmann ret = 0; 12567207b96SArnd Bergmann inode->i_op = &spufs_file_iops; 12667207b96SArnd Bergmann inode->i_fop = fops; 1278e18e294STheodore Ts'o inode->i_private = SPUFS_I(inode)->i_ctx = get_spu_context(ctx); 12867207b96SArnd Bergmann d_add(dentry, inode); 12967207b96SArnd Bergmann out: 13067207b96SArnd Bergmann return ret; 13167207b96SArnd Bergmann } 13267207b96SArnd Bergmann 13367207b96SArnd Bergmann static void 13467207b96SArnd Bergmann spufs_delete_inode(struct inode *inode) 13567207b96SArnd Bergmann { 1366263203eSArnd Bergmann struct spufs_inode_info *ei = SPUFS_I(inode); 1376263203eSArnd Bergmann 1386263203eSArnd Bergmann if (ei->i_ctx) 1396263203eSArnd Bergmann put_spu_context(ei->i_ctx); 1406263203eSArnd Bergmann if (ei->i_gang) 1416263203eSArnd Bergmann put_spu_gang(ei->i_gang); 14267207b96SArnd Bergmann clear_inode(inode); 14367207b96SArnd Bergmann } 14467207b96SArnd Bergmann 1453f51dd91SArnd Bergmann static void spufs_prune_dir(struct dentry *dir) 1463f51dd91SArnd Bergmann { 1473f51dd91SArnd Bergmann struct dentry *dentry, *tmp; 1486263203eSArnd Bergmann 1491b1dcc1bSJes Sorensen mutex_lock(&dir->d_inode->i_mutex); 150c3a9aea7SAndrew Morton list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) { 1513f51dd91SArnd Bergmann spin_lock(&dcache_lock); 1523f51dd91SArnd Bergmann spin_lock(&dentry->d_lock); 1533f51dd91SArnd Bergmann if (!(d_unhashed(dentry)) && dentry->d_inode) { 1543f51dd91SArnd Bergmann dget_locked(dentry); 1553f51dd91SArnd Bergmann __d_drop(dentry); 1563f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1573f51dd91SArnd Bergmann simple_unlink(dir->d_inode, dentry); 1583f51dd91SArnd Bergmann spin_unlock(&dcache_lock); 1593f51dd91SArnd Bergmann dput(dentry); 1603f51dd91SArnd Bergmann } else { 1613f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1623f51dd91SArnd Bergmann spin_unlock(&dcache_lock); 1633f51dd91SArnd Bergmann } 1643f51dd91SArnd Bergmann } 1653f51dd91SArnd Bergmann shrink_dcache_parent(dir); 1661b1dcc1bSJes Sorensen mutex_unlock(&dir->d_inode->i_mutex); 1673f51dd91SArnd Bergmann } 1683f51dd91SArnd Bergmann 1696263203eSArnd Bergmann /* Caller must hold parent->i_mutex */ 1706263203eSArnd Bergmann static int spufs_rmdir(struct inode *parent, struct dentry *dir) 1713f51dd91SArnd Bergmann { 1723f51dd91SArnd Bergmann /* remove all entries */ 1736263203eSArnd Bergmann spufs_prune_dir(dir); 1743f51dd91SArnd Bergmann 1756263203eSArnd Bergmann return simple_rmdir(parent, dir); 1763f51dd91SArnd Bergmann } 1773f51dd91SArnd Bergmann 1783f51dd91SArnd Bergmann static int spufs_fill_dir(struct dentry *dir, struct tree_descr *files, 17967207b96SArnd Bergmann int mode, struct spu_context *ctx) 18067207b96SArnd Bergmann { 18187873c86SSebastian Siewior struct dentry *dentry, *tmp; 18267207b96SArnd Bergmann int ret; 18367207b96SArnd Bergmann 18467207b96SArnd Bergmann while (files->name && files->name[0]) { 18567207b96SArnd Bergmann ret = -ENOMEM; 18667207b96SArnd Bergmann dentry = d_alloc_name(dir, files->name); 18767207b96SArnd Bergmann if (!dentry) 18867207b96SArnd Bergmann goto out; 18967207b96SArnd Bergmann ret = spufs_new_file(dir->d_sb, dentry, files->ops, 19067207b96SArnd Bergmann files->mode & mode, ctx); 19167207b96SArnd Bergmann if (ret) 19267207b96SArnd Bergmann goto out; 19367207b96SArnd Bergmann files++; 19467207b96SArnd Bergmann } 19567207b96SArnd Bergmann return 0; 19667207b96SArnd Bergmann out: 19787873c86SSebastian Siewior /* 19887873c86SSebastian Siewior * remove all children from dir. dir->inode is not set so don't 19987873c86SSebastian Siewior * just simply use spufs_prune_dir() and panic afterwards :) 20087873c86SSebastian Siewior * dput() looks like it will do the right thing: 20187873c86SSebastian Siewior * - dec parent's ref counter 20287873c86SSebastian Siewior * - remove child from parent's child list 20387873c86SSebastian Siewior * - free child's inode if possible 20487873c86SSebastian Siewior * - free child 20587873c86SSebastian Siewior */ 20687873c86SSebastian Siewior list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) { 20787873c86SSebastian Siewior dput(dentry); 20887873c86SSebastian Siewior } 20987873c86SSebastian Siewior 21087873c86SSebastian Siewior shrink_dcache_parent(dir); 21167207b96SArnd Bergmann return ret; 21267207b96SArnd Bergmann } 21367207b96SArnd Bergmann 21467207b96SArnd Bergmann static int spufs_dir_close(struct inode *inode, struct file *file) 21567207b96SArnd Bergmann { 2160309f02dSMichael Ellerman struct spu_context *ctx; 2176263203eSArnd Bergmann struct inode *parent; 2186263203eSArnd Bergmann struct dentry *dir; 21967207b96SArnd Bergmann int ret; 22067207b96SArnd Bergmann 221b4d1ab58SJosef Sipek dir = file->f_path.dentry; 2226263203eSArnd Bergmann parent = dir->d_parent->d_inode; 2236263203eSArnd Bergmann ctx = SPUFS_I(dir->d_inode)->i_ctx; 224c8ca0633SArnd Bergmann 2256263203eSArnd Bergmann mutex_lock(&parent->i_mutex); 2266263203eSArnd Bergmann ret = spufs_rmdir(parent, dir); 2276263203eSArnd Bergmann mutex_unlock(&parent->i_mutex); 22867207b96SArnd Bergmann WARN_ON(ret); 229c8ca0633SArnd Bergmann 2300309f02dSMichael Ellerman /* We have to give up the mm_struct */ 2310309f02dSMichael Ellerman spu_forget(ctx); 2320309f02dSMichael Ellerman 23367207b96SArnd Bergmann return dcache_dir_close(inode, file); 23467207b96SArnd Bergmann } 23567207b96SArnd Bergmann 2365dfe4c96SArjan van de Ven const struct file_operations spufs_context_fops = { 23767207b96SArnd Bergmann .open = dcache_dir_open, 23867207b96SArnd Bergmann .release = spufs_dir_close, 23967207b96SArnd Bergmann .llseek = dcache_dir_lseek, 24067207b96SArnd Bergmann .read = generic_read_dir, 24167207b96SArnd Bergmann .readdir = dcache_readdir, 24267207b96SArnd Bergmann .fsync = simple_sync_file, 24367207b96SArnd Bergmann }; 244bf1ab978SDwayne Grant McConnell EXPORT_SYMBOL_GPL(spufs_context_fops); 24567207b96SArnd Bergmann 24667207b96SArnd Bergmann static int 2479add11daSArnd Bergmann spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags, 2489add11daSArnd Bergmann int mode) 24967207b96SArnd Bergmann { 25067207b96SArnd Bergmann int ret; 25167207b96SArnd Bergmann struct inode *inode; 25267207b96SArnd Bergmann struct spu_context *ctx; 25367207b96SArnd Bergmann 25467207b96SArnd Bergmann ret = -ENOSPC; 25567207b96SArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 25667207b96SArnd Bergmann if (!inode) 25767207b96SArnd Bergmann goto out; 25867207b96SArnd Bergmann 25967207b96SArnd Bergmann if (dir->i_mode & S_ISGID) { 26067207b96SArnd Bergmann inode->i_gid = dir->i_gid; 26167207b96SArnd Bergmann inode->i_mode &= S_ISGID; 26267207b96SArnd Bergmann } 2636263203eSArnd Bergmann ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */ 26467207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = ctx; 26567207b96SArnd Bergmann if (!ctx) 26667207b96SArnd Bergmann goto out_iput; 26767207b96SArnd Bergmann 2689add11daSArnd Bergmann ctx->flags = flags; 269b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 27067207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 2715737edd1SMark Nutter if (flags & SPU_CREATE_NOSCHED) 2725737edd1SMark Nutter ret = spufs_fill_dir(dentry, spufs_dir_nosched_contents, 2735737edd1SMark Nutter mode, ctx); 2745737edd1SMark Nutter else 27567207b96SArnd Bergmann ret = spufs_fill_dir(dentry, spufs_dir_contents, mode, ctx); 2765737edd1SMark Nutter 27767207b96SArnd Bergmann if (ret) 27867207b96SArnd Bergmann goto out_free_ctx; 27967207b96SArnd Bergmann 28067207b96SArnd Bergmann d_instantiate(dentry, inode); 28167207b96SArnd Bergmann dget(dentry); 28267207b96SArnd Bergmann dir->i_nlink++; 283346f4d3cSArnd Bergmann dentry->d_inode->i_nlink++; 28467207b96SArnd Bergmann goto out; 28567207b96SArnd Bergmann 28667207b96SArnd Bergmann out_free_ctx: 28789df0085SSebastian Siewior spu_forget(ctx); 28867207b96SArnd Bergmann put_spu_context(ctx); 28967207b96SArnd Bergmann out_iput: 29067207b96SArnd Bergmann iput(inode); 29167207b96SArnd Bergmann out: 29267207b96SArnd Bergmann return ret; 29367207b96SArnd Bergmann } 29467207b96SArnd Bergmann 295346f4d3cSArnd Bergmann static int spufs_context_open(struct dentry *dentry, struct vfsmount *mnt) 296346f4d3cSArnd Bergmann { 297346f4d3cSArnd Bergmann int ret; 298346f4d3cSArnd Bergmann struct file *filp; 299346f4d3cSArnd Bergmann 300346f4d3cSArnd Bergmann ret = get_unused_fd(); 301346f4d3cSArnd Bergmann if (ret < 0) { 302346f4d3cSArnd Bergmann dput(dentry); 303346f4d3cSArnd Bergmann mntput(mnt); 304346f4d3cSArnd Bergmann goto out; 305346f4d3cSArnd Bergmann } 306346f4d3cSArnd Bergmann 307346f4d3cSArnd Bergmann filp = dentry_open(dentry, mnt, O_RDONLY); 308346f4d3cSArnd Bergmann if (IS_ERR(filp)) { 309346f4d3cSArnd Bergmann put_unused_fd(ret); 310346f4d3cSArnd Bergmann ret = PTR_ERR(filp); 311346f4d3cSArnd Bergmann goto out; 312346f4d3cSArnd Bergmann } 313346f4d3cSArnd Bergmann 314346f4d3cSArnd Bergmann filp->f_op = &spufs_context_fops; 315346f4d3cSArnd Bergmann fd_install(ret, filp); 316346f4d3cSArnd Bergmann out: 317346f4d3cSArnd Bergmann return ret; 318346f4d3cSArnd Bergmann } 319346f4d3cSArnd Bergmann 3208e68e2f2SArnd Bergmann static struct spu_context * 3218e68e2f2SArnd Bergmann spufs_assert_affinity(unsigned int flags, struct spu_gang *gang, 3228e68e2f2SArnd Bergmann struct file *filp) 3238e68e2f2SArnd Bergmann { 3248e68e2f2SArnd Bergmann struct spu_context *tmp, *neighbor; 3258e68e2f2SArnd Bergmann int count, node; 3268e68e2f2SArnd Bergmann int aff_supp; 3278e68e2f2SArnd Bergmann 3288e68e2f2SArnd Bergmann aff_supp = !list_empty(&(list_entry(cbe_spu_info[0].spus.next, 3298e68e2f2SArnd Bergmann struct spu, cbe_list))->aff_list); 3308e68e2f2SArnd Bergmann 3318e68e2f2SArnd Bergmann if (!aff_supp) 3328e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3338e68e2f2SArnd Bergmann 3348e68e2f2SArnd Bergmann if (flags & SPU_CREATE_GANG) 3358e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3368e68e2f2SArnd Bergmann 3378e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM && 3388e68e2f2SArnd Bergmann gang->aff_ref_ctx && 3398e68e2f2SArnd Bergmann gang->aff_ref_ctx->flags & SPU_CREATE_AFFINITY_MEM) 3408e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3418e68e2f2SArnd Bergmann 3428e68e2f2SArnd Bergmann if (gang->aff_flags & AFF_MERGED) 3438e68e2f2SArnd Bergmann return ERR_PTR(-EBUSY); 3448e68e2f2SArnd Bergmann 3458e68e2f2SArnd Bergmann neighbor = NULL; 3468e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3478e68e2f2SArnd Bergmann if (!filp || filp->f_op != &spufs_context_fops) 3488e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3498e68e2f2SArnd Bergmann 3508e68e2f2SArnd Bergmann neighbor = get_spu_context( 3518e68e2f2SArnd Bergmann SPUFS_I(filp->f_dentry->d_inode)->i_ctx); 3528e68e2f2SArnd Bergmann 3538e68e2f2SArnd Bergmann if (!list_empty(&neighbor->aff_list) && !(neighbor->aff_head) && 3548e68e2f2SArnd Bergmann !list_is_last(&neighbor->aff_list, &gang->aff_list_head) && 3558e68e2f2SArnd Bergmann !list_entry(neighbor->aff_list.next, struct spu_context, 3568e68e2f2SArnd Bergmann aff_list)->aff_head) 3578e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3588e68e2f2SArnd Bergmann 3598e68e2f2SArnd Bergmann if (gang != neighbor->gang) 3608e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3618e68e2f2SArnd Bergmann 3628e68e2f2SArnd Bergmann count = 1; 3638e68e2f2SArnd Bergmann list_for_each_entry(tmp, &gang->aff_list_head, aff_list) 3648e68e2f2SArnd Bergmann count++; 3658e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) 3668e68e2f2SArnd Bergmann count++; 3678e68e2f2SArnd Bergmann 3688e68e2f2SArnd Bergmann for (node = 0; node < MAX_NUMNODES; node++) { 3698e68e2f2SArnd Bergmann if ((cbe_spu_info[node].n_spus - atomic_read( 3708e68e2f2SArnd Bergmann &cbe_spu_info[node].reserved_spus)) >= count) 3718e68e2f2SArnd Bergmann break; 3728e68e2f2SArnd Bergmann } 3738e68e2f2SArnd Bergmann 3748e68e2f2SArnd Bergmann if (node == MAX_NUMNODES) 3758e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3768e68e2f2SArnd Bergmann } 3778e68e2f2SArnd Bergmann 3788e68e2f2SArnd Bergmann return neighbor; 3798e68e2f2SArnd Bergmann } 3808e68e2f2SArnd Bergmann 3818e68e2f2SArnd Bergmann static void 3828e68e2f2SArnd Bergmann spufs_set_affinity(unsigned int flags, struct spu_context *ctx, 3838e68e2f2SArnd Bergmann struct spu_context *neighbor) 3848e68e2f2SArnd Bergmann { 3858e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM) 3868e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3878e68e2f2SArnd Bergmann 3888e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3898e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) { 3908e68e2f2SArnd Bergmann list_add_tail(&neighbor->aff_list, 3918e68e2f2SArnd Bergmann &ctx->gang->aff_list_head); 3928e68e2f2SArnd Bergmann neighbor->aff_head = 1; 3938e68e2f2SArnd Bergmann } 3948e68e2f2SArnd Bergmann 3958e68e2f2SArnd Bergmann if (list_is_last(&neighbor->aff_list, &ctx->gang->aff_list_head) 3968e68e2f2SArnd Bergmann || list_entry(neighbor->aff_list.next, struct spu_context, 3978e68e2f2SArnd Bergmann aff_list)->aff_head) { 3988e68e2f2SArnd Bergmann list_add(&ctx->aff_list, &neighbor->aff_list); 3998e68e2f2SArnd Bergmann } else { 4008e68e2f2SArnd Bergmann list_add_tail(&ctx->aff_list, &neighbor->aff_list); 4018e68e2f2SArnd Bergmann if (neighbor->aff_head) { 4028e68e2f2SArnd Bergmann neighbor->aff_head = 0; 4038e68e2f2SArnd Bergmann ctx->aff_head = 1; 4048e68e2f2SArnd Bergmann } 4058e68e2f2SArnd Bergmann } 4068e68e2f2SArnd Bergmann 4078e68e2f2SArnd Bergmann if (!ctx->gang->aff_ref_ctx) 4088e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 4098e68e2f2SArnd Bergmann } 4108e68e2f2SArnd Bergmann } 4118e68e2f2SArnd Bergmann 4128e68e2f2SArnd Bergmann static int 4138e68e2f2SArnd Bergmann spufs_create_context(struct inode *inode, struct dentry *dentry, 4148e68e2f2SArnd Bergmann struct vfsmount *mnt, int flags, int mode, 4158e68e2f2SArnd Bergmann struct file *aff_filp) 4166263203eSArnd Bergmann { 4176263203eSArnd Bergmann int ret; 4188e68e2f2SArnd Bergmann int affinity; 4198e68e2f2SArnd Bergmann struct spu_gang *gang; 4208e68e2f2SArnd Bergmann struct spu_context *neighbor; 4216263203eSArnd Bergmann 4225737edd1SMark Nutter ret = -EPERM; 4235737edd1SMark Nutter if ((flags & SPU_CREATE_NOSCHED) && 4245737edd1SMark Nutter !capable(CAP_SYS_NICE)) 4255737edd1SMark Nutter goto out_unlock; 4265737edd1SMark Nutter 4275737edd1SMark Nutter ret = -EINVAL; 4285737edd1SMark Nutter if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE)) 4295737edd1SMark Nutter == SPU_CREATE_ISOLATE) 4305737edd1SMark Nutter goto out_unlock; 4315737edd1SMark Nutter 432bd2e5f82SJeremy Kerr ret = -ENODEV; 433bd2e5f82SJeremy Kerr if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader) 434bd2e5f82SJeremy Kerr goto out_unlock; 435bd2e5f82SJeremy Kerr 4368e68e2f2SArnd Bergmann gang = NULL; 4378e68e2f2SArnd Bergmann neighbor = NULL; 4388e68e2f2SArnd Bergmann affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU); 4398e68e2f2SArnd Bergmann if (affinity) { 4408e68e2f2SArnd Bergmann gang = SPUFS_I(inode)->i_gang; 4418e68e2f2SArnd Bergmann ret = -EINVAL; 4428e68e2f2SArnd Bergmann if (!gang) 4438e68e2f2SArnd Bergmann goto out_unlock; 4448e68e2f2SArnd Bergmann mutex_lock(&gang->aff_mutex); 4458e68e2f2SArnd Bergmann neighbor = spufs_assert_affinity(flags, gang, aff_filp); 4468e68e2f2SArnd Bergmann if (IS_ERR(neighbor)) { 4478e68e2f2SArnd Bergmann ret = PTR_ERR(neighbor); 4488e68e2f2SArnd Bergmann goto out_aff_unlock; 4498e68e2f2SArnd Bergmann } 4508e68e2f2SArnd Bergmann } 4518e68e2f2SArnd Bergmann 4526263203eSArnd Bergmann ret = spufs_mkdir(inode, dentry, flags, mode & S_IRWXUGO); 4536263203eSArnd Bergmann if (ret) 4548e68e2f2SArnd Bergmann goto out_aff_unlock; 4558e68e2f2SArnd Bergmann 4568e68e2f2SArnd Bergmann if (affinity) 4578e68e2f2SArnd Bergmann spufs_set_affinity(flags, SPUFS_I(dentry->d_inode)->i_ctx, 4588e68e2f2SArnd Bergmann neighbor); 4596263203eSArnd Bergmann 4606263203eSArnd Bergmann /* 4616263203eSArnd Bergmann * get references for dget and mntget, will be released 4626263203eSArnd Bergmann * in error path of *_open(). 4636263203eSArnd Bergmann */ 4646263203eSArnd Bergmann ret = spufs_context_open(dget(dentry), mntget(mnt)); 4656263203eSArnd Bergmann if (ret < 0) { 4666263203eSArnd Bergmann WARN_ON(spufs_rmdir(inode, dentry)); 4676263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 4686263203eSArnd Bergmann spu_forget(SPUFS_I(dentry->d_inode)->i_ctx); 4696263203eSArnd Bergmann goto out; 4706263203eSArnd Bergmann } 4716263203eSArnd Bergmann 4728e68e2f2SArnd Bergmann out_aff_unlock: 4738e68e2f2SArnd Bergmann if (affinity) 4748e68e2f2SArnd Bergmann mutex_unlock(&gang->aff_mutex); 4756263203eSArnd Bergmann out_unlock: 4766263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 4776263203eSArnd Bergmann out: 4786263203eSArnd Bergmann dput(dentry); 4796263203eSArnd Bergmann return ret; 4806263203eSArnd Bergmann } 4816263203eSArnd Bergmann 4826263203eSArnd Bergmann static int 4836263203eSArnd Bergmann spufs_mkgang(struct inode *dir, struct dentry *dentry, int mode) 4846263203eSArnd Bergmann { 4856263203eSArnd Bergmann int ret; 4866263203eSArnd Bergmann struct inode *inode; 4876263203eSArnd Bergmann struct spu_gang *gang; 4886263203eSArnd Bergmann 4896263203eSArnd Bergmann ret = -ENOSPC; 4906263203eSArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 4916263203eSArnd Bergmann if (!inode) 4926263203eSArnd Bergmann goto out; 4936263203eSArnd Bergmann 4946263203eSArnd Bergmann ret = 0; 4956263203eSArnd Bergmann if (dir->i_mode & S_ISGID) { 4966263203eSArnd Bergmann inode->i_gid = dir->i_gid; 4976263203eSArnd Bergmann inode->i_mode &= S_ISGID; 4986263203eSArnd Bergmann } 4996263203eSArnd Bergmann gang = alloc_spu_gang(); 5006263203eSArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 5016263203eSArnd Bergmann SPUFS_I(inode)->i_gang = gang; 5026263203eSArnd Bergmann if (!gang) 5036263203eSArnd Bergmann goto out_iput; 5046263203eSArnd Bergmann 505b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 5066263203eSArnd Bergmann inode->i_fop = &simple_dir_operations; 5076263203eSArnd Bergmann 5086263203eSArnd Bergmann d_instantiate(dentry, inode); 5096263203eSArnd Bergmann dir->i_nlink++; 5106263203eSArnd Bergmann dentry->d_inode->i_nlink++; 5116263203eSArnd Bergmann return ret; 5126263203eSArnd Bergmann 5136263203eSArnd Bergmann out_iput: 5146263203eSArnd Bergmann iput(inode); 5156263203eSArnd Bergmann out: 5166263203eSArnd Bergmann return ret; 5176263203eSArnd Bergmann } 5186263203eSArnd Bergmann 5196263203eSArnd Bergmann static int spufs_gang_open(struct dentry *dentry, struct vfsmount *mnt) 5206263203eSArnd Bergmann { 5216263203eSArnd Bergmann int ret; 5226263203eSArnd Bergmann struct file *filp; 5236263203eSArnd Bergmann 5246263203eSArnd Bergmann ret = get_unused_fd(); 5256263203eSArnd Bergmann if (ret < 0) { 5266263203eSArnd Bergmann dput(dentry); 5276263203eSArnd Bergmann mntput(mnt); 5286263203eSArnd Bergmann goto out; 5296263203eSArnd Bergmann } 5306263203eSArnd Bergmann 5316263203eSArnd Bergmann filp = dentry_open(dentry, mnt, O_RDONLY); 5326263203eSArnd Bergmann if (IS_ERR(filp)) { 5336263203eSArnd Bergmann put_unused_fd(ret); 5346263203eSArnd Bergmann ret = PTR_ERR(filp); 5356263203eSArnd Bergmann goto out; 5366263203eSArnd Bergmann } 5376263203eSArnd Bergmann 538877907d3SJeremy Kerr filp->f_op = &simple_dir_operations; 5396263203eSArnd Bergmann fd_install(ret, filp); 5406263203eSArnd Bergmann out: 5416263203eSArnd Bergmann return ret; 5426263203eSArnd Bergmann } 5436263203eSArnd Bergmann 5446263203eSArnd Bergmann static int spufs_create_gang(struct inode *inode, 5456263203eSArnd Bergmann struct dentry *dentry, 5466263203eSArnd Bergmann struct vfsmount *mnt, int mode) 5476263203eSArnd Bergmann { 5486263203eSArnd Bergmann int ret; 5496263203eSArnd Bergmann 5506263203eSArnd Bergmann ret = spufs_mkgang(inode, dentry, mode & S_IRWXUGO); 5516263203eSArnd Bergmann if (ret) 5526263203eSArnd Bergmann goto out; 5536263203eSArnd Bergmann 5546263203eSArnd Bergmann /* 5556263203eSArnd Bergmann * get references for dget and mntget, will be released 5566263203eSArnd Bergmann * in error path of *_open(). 5576263203eSArnd Bergmann */ 5586263203eSArnd Bergmann ret = spufs_gang_open(dget(dentry), mntget(mnt)); 559877907d3SJeremy Kerr if (ret < 0) { 560877907d3SJeremy Kerr int err = simple_rmdir(inode, dentry); 561877907d3SJeremy Kerr WARN_ON(err); 562877907d3SJeremy Kerr } 5636263203eSArnd Bergmann 5646263203eSArnd Bergmann out: 5656263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 5666263203eSArnd Bergmann dput(dentry); 5676263203eSArnd Bergmann return ret; 5686263203eSArnd Bergmann } 5696263203eSArnd Bergmann 5706263203eSArnd Bergmann 571346f4d3cSArnd Bergmann static struct file_system_type spufs_type; 572346f4d3cSArnd Bergmann 5738e68e2f2SArnd Bergmann long spufs_create(struct nameidata *nd, unsigned int flags, mode_t mode, 5748e68e2f2SArnd Bergmann struct file *filp) 57567207b96SArnd Bergmann { 57667207b96SArnd Bergmann struct dentry *dentry; 57767207b96SArnd Bergmann int ret; 57867207b96SArnd Bergmann 57967207b96SArnd Bergmann ret = -EINVAL; 5806263203eSArnd Bergmann /* check if we are on spufs */ 5816263203eSArnd Bergmann if (nd->dentry->d_sb->s_type != &spufs_type) 58267207b96SArnd Bergmann goto out; 58367207b96SArnd Bergmann 5846263203eSArnd Bergmann /* don't accept undefined flags */ 5859add11daSArnd Bergmann if (flags & (~SPU_CREATE_FLAG_ALL)) 586c9832948Sarnd@arndb.de goto out; 587c9832948Sarnd@arndb.de 5886263203eSArnd Bergmann /* only threads can be underneath a gang */ 5896263203eSArnd Bergmann if (nd->dentry != nd->dentry->d_sb->s_root) { 5906263203eSArnd Bergmann if ((flags & SPU_CREATE_GANG) || 5916263203eSArnd Bergmann !SPUFS_I(nd->dentry->d_inode)->i_gang) 5926263203eSArnd Bergmann goto out; 5936263203eSArnd Bergmann } 5946263203eSArnd Bergmann 59567207b96SArnd Bergmann dentry = lookup_create(nd, 1); 59667207b96SArnd Bergmann ret = PTR_ERR(dentry); 59767207b96SArnd Bergmann if (IS_ERR(dentry)) 59867207b96SArnd Bergmann goto out_dir; 59967207b96SArnd Bergmann 60067207b96SArnd Bergmann ret = -EEXIST; 60167207b96SArnd Bergmann if (dentry->d_inode) 60267207b96SArnd Bergmann goto out_dput; 60367207b96SArnd Bergmann 60467207b96SArnd Bergmann mode &= ~current->fs->umask; 60567207b96SArnd Bergmann 6066263203eSArnd Bergmann if (flags & SPU_CREATE_GANG) 6076263203eSArnd Bergmann return spufs_create_gang(nd->dentry->d_inode, 6086263203eSArnd Bergmann dentry, nd->mnt, mode); 6096263203eSArnd Bergmann else 6106263203eSArnd Bergmann return spufs_create_context(nd->dentry->d_inode, 6118e68e2f2SArnd Bergmann dentry, nd->mnt, flags, mode, filp); 61267207b96SArnd Bergmann 61367207b96SArnd Bergmann out_dput: 61467207b96SArnd Bergmann dput(dentry); 61567207b96SArnd Bergmann out_dir: 6161b1dcc1bSJes Sorensen mutex_unlock(&nd->dentry->d_inode->i_mutex); 61767207b96SArnd Bergmann out: 61867207b96SArnd Bergmann return ret; 61967207b96SArnd Bergmann } 62067207b96SArnd Bergmann 62167207b96SArnd Bergmann /* File system initialization */ 62267207b96SArnd Bergmann enum { 623f11f5ee7SJeremy Kerr Opt_uid, Opt_gid, Opt_mode, Opt_err, 62467207b96SArnd Bergmann }; 62567207b96SArnd Bergmann 62667207b96SArnd Bergmann static match_table_t spufs_tokens = { 62767207b96SArnd Bergmann { Opt_uid, "uid=%d" }, 62867207b96SArnd Bergmann { Opt_gid, "gid=%d" }, 629f11f5ee7SJeremy Kerr { Opt_mode, "mode=%o" }, 63067207b96SArnd Bergmann { Opt_err, NULL }, 63167207b96SArnd Bergmann }; 63267207b96SArnd Bergmann 63367207b96SArnd Bergmann static int 63467207b96SArnd Bergmann spufs_parse_options(char *options, struct inode *root) 63567207b96SArnd Bergmann { 63667207b96SArnd Bergmann char *p; 63767207b96SArnd Bergmann substring_t args[MAX_OPT_ARGS]; 63867207b96SArnd Bergmann 63967207b96SArnd Bergmann while ((p = strsep(&options, ",")) != NULL) { 64067207b96SArnd Bergmann int token, option; 64167207b96SArnd Bergmann 64267207b96SArnd Bergmann if (!*p) 64367207b96SArnd Bergmann continue; 64467207b96SArnd Bergmann 64567207b96SArnd Bergmann token = match_token(p, spufs_tokens, args); 64667207b96SArnd Bergmann switch (token) { 64767207b96SArnd Bergmann case Opt_uid: 64867207b96SArnd Bergmann if (match_int(&args[0], &option)) 64967207b96SArnd Bergmann return 0; 65067207b96SArnd Bergmann root->i_uid = option; 65167207b96SArnd Bergmann break; 65267207b96SArnd Bergmann case Opt_gid: 65367207b96SArnd Bergmann if (match_int(&args[0], &option)) 65467207b96SArnd Bergmann return 0; 65567207b96SArnd Bergmann root->i_gid = option; 65667207b96SArnd Bergmann break; 657f11f5ee7SJeremy Kerr case Opt_mode: 658f11f5ee7SJeremy Kerr if (match_octal(&args[0], &option)) 659f11f5ee7SJeremy Kerr return 0; 660f11f5ee7SJeremy Kerr root->i_mode = option | S_IFDIR; 661f11f5ee7SJeremy Kerr break; 66267207b96SArnd Bergmann default: 66367207b96SArnd Bergmann return 0; 66467207b96SArnd Bergmann } 66567207b96SArnd Bergmann } 66667207b96SArnd Bergmann return 1; 66767207b96SArnd Bergmann } 66867207b96SArnd Bergmann 669db1384b4SAkinobu Mita static void spufs_exit_isolated_loader(void) 670db1384b4SAkinobu Mita { 671*8b0d3121SSebastian Siewior free_pages((unsigned long) isolated_loader, 672*8b0d3121SSebastian Siewior get_order(isolated_loader_size)); 673db1384b4SAkinobu Mita } 674db1384b4SAkinobu Mita 6750afacde3Sarnd@arndb.de static void 6760afacde3Sarnd@arndb.de spufs_init_isolated_loader(void) 6770afacde3Sarnd@arndb.de { 6780afacde3Sarnd@arndb.de struct device_node *dn; 6790afacde3Sarnd@arndb.de const char *loader; 6800afacde3Sarnd@arndb.de int size; 6810afacde3Sarnd@arndb.de 6820afacde3Sarnd@arndb.de dn = of_find_node_by_path("/spu-isolation"); 6830afacde3Sarnd@arndb.de if (!dn) 6840afacde3Sarnd@arndb.de return; 6850afacde3Sarnd@arndb.de 686e2eb6392SStephen Rothwell loader = of_get_property(dn, "loader", &size); 6870afacde3Sarnd@arndb.de if (!loader) 6880afacde3Sarnd@arndb.de return; 6890afacde3Sarnd@arndb.de 690*8b0d3121SSebastian Siewior /* the loader must be align on a 16 byte boundary */ 691*8b0d3121SSebastian Siewior isolated_loader = (char *)__get_free_pages(GFP_KERNEL, get_order(size)); 6920afacde3Sarnd@arndb.de if (!isolated_loader) 6930afacde3Sarnd@arndb.de return; 6940afacde3Sarnd@arndb.de 695*8b0d3121SSebastian Siewior isolated_loader_size = size; 6960afacde3Sarnd@arndb.de memcpy(isolated_loader, loader, size); 6970afacde3Sarnd@arndb.de printk(KERN_INFO "spufs: SPU isolation mode enabled\n"); 6980afacde3Sarnd@arndb.de } 6990afacde3Sarnd@arndb.de 70067207b96SArnd Bergmann static int 7018b3d6663SArnd Bergmann spufs_create_root(struct super_block *sb, void *data) 7028b3d6663SArnd Bergmann { 70367207b96SArnd Bergmann struct inode *inode; 70467207b96SArnd Bergmann int ret; 70567207b96SArnd Bergmann 7068f18a158SArnd Bergmann ret = -ENODEV; 7078f18a158SArnd Bergmann if (!spu_management_ops) 7088f18a158SArnd Bergmann goto out; 7098f18a158SArnd Bergmann 71067207b96SArnd Bergmann ret = -ENOMEM; 71167207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFDIR | 0775); 71267207b96SArnd Bergmann if (!inode) 71367207b96SArnd Bergmann goto out; 71467207b96SArnd Bergmann 715b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 71667207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 71767207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 71867207b96SArnd Bergmann 71967207b96SArnd Bergmann ret = -EINVAL; 72067207b96SArnd Bergmann if (!spufs_parse_options(data, inode)) 72167207b96SArnd Bergmann goto out_iput; 72267207b96SArnd Bergmann 72367207b96SArnd Bergmann ret = -ENOMEM; 72467207b96SArnd Bergmann sb->s_root = d_alloc_root(inode); 72567207b96SArnd Bergmann if (!sb->s_root) 72667207b96SArnd Bergmann goto out_iput; 72767207b96SArnd Bergmann 72867207b96SArnd Bergmann return 0; 72967207b96SArnd Bergmann out_iput: 73067207b96SArnd Bergmann iput(inode); 73167207b96SArnd Bergmann out: 73267207b96SArnd Bergmann return ret; 73367207b96SArnd Bergmann } 73467207b96SArnd Bergmann 73567207b96SArnd Bergmann static int 73667207b96SArnd Bergmann spufs_fill_super(struct super_block *sb, void *data, int silent) 73767207b96SArnd Bergmann { 73867207b96SArnd Bergmann static struct super_operations s_ops = { 73967207b96SArnd Bergmann .alloc_inode = spufs_alloc_inode, 74067207b96SArnd Bergmann .destroy_inode = spufs_destroy_inode, 74167207b96SArnd Bergmann .statfs = simple_statfs, 74267207b96SArnd Bergmann .delete_inode = spufs_delete_inode, 74367207b96SArnd Bergmann .drop_inode = generic_delete_inode, 74467207b96SArnd Bergmann }; 74567207b96SArnd Bergmann 74667207b96SArnd Bergmann sb->s_maxbytes = MAX_LFS_FILESIZE; 74767207b96SArnd Bergmann sb->s_blocksize = PAGE_CACHE_SIZE; 74867207b96SArnd Bergmann sb->s_blocksize_bits = PAGE_CACHE_SHIFT; 74967207b96SArnd Bergmann sb->s_magic = SPUFS_MAGIC; 75067207b96SArnd Bergmann sb->s_op = &s_ops; 75167207b96SArnd Bergmann 75267207b96SArnd Bergmann return spufs_create_root(sb, data); 75367207b96SArnd Bergmann } 75467207b96SArnd Bergmann 755454e2398SDavid Howells static int 75667207b96SArnd Bergmann spufs_get_sb(struct file_system_type *fstype, int flags, 757454e2398SDavid Howells const char *name, void *data, struct vfsmount *mnt) 75867207b96SArnd Bergmann { 759454e2398SDavid Howells return get_sb_single(fstype, flags, data, spufs_fill_super, mnt); 76067207b96SArnd Bergmann } 76167207b96SArnd Bergmann 76267207b96SArnd Bergmann static struct file_system_type spufs_type = { 76367207b96SArnd Bergmann .owner = THIS_MODULE, 76467207b96SArnd Bergmann .name = "spufs", 76567207b96SArnd Bergmann .get_sb = spufs_get_sb, 76667207b96SArnd Bergmann .kill_sb = kill_litter_super, 76767207b96SArnd Bergmann }; 76867207b96SArnd Bergmann 769e78b47a5SArnd Bergmann static int __init spufs_init(void) 77067207b96SArnd Bergmann { 77167207b96SArnd Bergmann int ret; 772bf1ab978SDwayne Grant McConnell 773ccf17e9dSJeremy Kerr ret = -ENODEV; 774ccf17e9dSJeremy Kerr if (!spu_management_ops) 775ccf17e9dSJeremy Kerr goto out; 776ccf17e9dSJeremy Kerr 77767207b96SArnd Bergmann ret = -ENOMEM; 77867207b96SArnd Bergmann spufs_inode_cache = kmem_cache_create("spufs_inode_cache", 77967207b96SArnd Bergmann sizeof(struct spufs_inode_info), 0, 78020c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, spufs_init_once); 78167207b96SArnd Bergmann 78267207b96SArnd Bergmann if (!spufs_inode_cache) 78367207b96SArnd Bergmann goto out; 784c99c1994SAkinobu Mita ret = spu_sched_init(); 78567207b96SArnd Bergmann if (ret) 78667207b96SArnd Bergmann goto out_cache; 787c99c1994SAkinobu Mita ret = register_filesystem(&spufs_type); 788c99c1994SAkinobu Mita if (ret) 789c99c1994SAkinobu Mita goto out_sched; 79067207b96SArnd Bergmann ret = register_spu_syscalls(&spufs_calls); 79167207b96SArnd Bergmann if (ret) 79267207b96SArnd Bergmann goto out_fs; 793bf1ab978SDwayne Grant McConnell ret = register_arch_coredump_calls(&spufs_coredump_calls); 794bf1ab978SDwayne Grant McConnell if (ret) 795c99c1994SAkinobu Mita goto out_syscalls; 7960afacde3Sarnd@arndb.de 7970afacde3Sarnd@arndb.de spufs_init_isolated_loader(); 798bf1ab978SDwayne Grant McConnell 79967207b96SArnd Bergmann return 0; 800c99c1994SAkinobu Mita 801c99c1994SAkinobu Mita out_syscalls: 802c99c1994SAkinobu Mita unregister_spu_syscalls(&spufs_calls); 80367207b96SArnd Bergmann out_fs: 80467207b96SArnd Bergmann unregister_filesystem(&spufs_type); 805c99c1994SAkinobu Mita out_sched: 806c99c1994SAkinobu Mita spu_sched_exit(); 80767207b96SArnd Bergmann out_cache: 80867207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 80967207b96SArnd Bergmann out: 81067207b96SArnd Bergmann return ret; 81167207b96SArnd Bergmann } 81267207b96SArnd Bergmann module_init(spufs_init); 81367207b96SArnd Bergmann 814e78b47a5SArnd Bergmann static void __exit spufs_exit(void) 81567207b96SArnd Bergmann { 8168b3d6663SArnd Bergmann spu_sched_exit(); 817db1384b4SAkinobu Mita spufs_exit_isolated_loader(); 818bf1ab978SDwayne Grant McConnell unregister_arch_coredump_calls(&spufs_coredump_calls); 81967207b96SArnd Bergmann unregister_spu_syscalls(&spufs_calls); 82067207b96SArnd Bergmann unregister_filesystem(&spufs_type); 82167207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 82267207b96SArnd Bergmann } 82367207b96SArnd Bergmann module_exit(spufs_exit); 82467207b96SArnd Bergmann 82567207b96SArnd Bergmann MODULE_LICENSE("GPL"); 82667207b96SArnd Bergmann MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); 82767207b96SArnd Bergmann 828