1de6cc651SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 24ac91378SJan Blunck 367207b96SArnd Bergmann /* 467207b96SArnd Bergmann * SPU file system 567207b96SArnd Bergmann * 667207b96SArnd Bergmann * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 767207b96SArnd Bergmann * 867207b96SArnd Bergmann * Author: Arnd Bergmann <arndb@de.ibm.com> 967207b96SArnd Bergmann */ 1067207b96SArnd Bergmann 1167207b96SArnd Bergmann #include <linux/file.h> 1267207b96SArnd Bergmann #include <linux/fs.h> 13d2e0981cSDavid Howells #include <linux/fs_context.h> 14d2e0981cSDavid Howells #include <linux/fs_parser.h> 15826be063SChristoph Hellwig #include <linux/fsnotify.h> 1667207b96SArnd Bergmann #include <linux/backing-dev.h> 1767207b96SArnd Bergmann #include <linux/init.h> 1867207b96SArnd Bergmann #include <linux/ioctl.h> 1967207b96SArnd Bergmann #include <linux/module.h> 20346f4d3cSArnd Bergmann #include <linux/mount.h> 2167207b96SArnd Bergmann #include <linux/namei.h> 2267207b96SArnd Bergmann #include <linux/pagemap.h> 2367207b96SArnd Bergmann #include <linux/poll.h> 24e6f6390aSChristophe Leroy #include <linux/of.h> 25e41d12f5SChristoph Hellwig #include <linux/seq_file.h> 2667207b96SArnd Bergmann #include <linux/slab.h> 2767207b96SArnd Bergmann 2867207b96SArnd Bergmann #include <asm/spu.h> 29ccf17e9dSJeremy Kerr #include <asm/spu_priv1.h> 307c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 3167207b96SArnd Bergmann 3267207b96SArnd Bergmann #include "spufs.h" 3367207b96SArnd Bergmann 342c3e4787SJeremy Kerr struct spufs_sb_info { 35d2e0981cSDavid Howells bool debug; 362c3e4787SJeremy Kerr }; 372c3e4787SJeremy Kerr 38e18b890bSChristoph Lameter static struct kmem_cache *spufs_inode_cache; 39c6730ed4SJeremy Kerr char *isolated_loader; 408b0d3121SSebastian Siewior static int isolated_loader_size; 4167207b96SArnd Bergmann 422c3e4787SJeremy Kerr static struct spufs_sb_info *spufs_get_sb_info(struct super_block *sb) 432c3e4787SJeremy Kerr { 442c3e4787SJeremy Kerr return sb->s_fs_info; 452c3e4787SJeremy Kerr } 462c3e4787SJeremy Kerr 4767207b96SArnd Bergmann static struct inode * 4867207b96SArnd Bergmann spufs_alloc_inode(struct super_block *sb) 4967207b96SArnd Bergmann { 5067207b96SArnd Bergmann struct spufs_inode_info *ei; 5167207b96SArnd Bergmann 52e94b1766SChristoph Lameter ei = kmem_cache_alloc(spufs_inode_cache, GFP_KERNEL); 5367207b96SArnd Bergmann if (!ei) 5467207b96SArnd Bergmann return NULL; 556263203eSArnd Bergmann 566263203eSArnd Bergmann ei->i_gang = NULL; 576263203eSArnd Bergmann ei->i_ctx = NULL; 5843c2bbd9SChristoph Hellwig ei->i_openers = 0; 596263203eSArnd Bergmann 6067207b96SArnd Bergmann return &ei->vfs_inode; 6167207b96SArnd Bergmann } 6267207b96SArnd Bergmann 636d0e0d0bSAl Viro static void spufs_free_inode(struct inode *inode) 6467207b96SArnd Bergmann { 6567207b96SArnd Bergmann kmem_cache_free(spufs_inode_cache, SPUFS_I(inode)); 6667207b96SArnd Bergmann } 6767207b96SArnd Bergmann 6867207b96SArnd Bergmann static void 6951cc5068SAlexey Dobriyan spufs_init_once(void *p) 7067207b96SArnd Bergmann { 7167207b96SArnd Bergmann struct spufs_inode_info *ei = p; 7267207b96SArnd Bergmann 7367207b96SArnd Bergmann inode_init_once(&ei->vfs_inode); 7467207b96SArnd Bergmann } 7567207b96SArnd Bergmann 7667207b96SArnd Bergmann static struct inode * 77c6684b26SAl Viro spufs_new_inode(struct super_block *sb, umode_t mode) 7867207b96SArnd Bergmann { 7967207b96SArnd Bergmann struct inode *inode; 8067207b96SArnd Bergmann 8167207b96SArnd Bergmann inode = new_inode(sb); 8267207b96SArnd Bergmann if (!inode) 8367207b96SArnd Bergmann goto out; 8467207b96SArnd Bergmann 856747e832SMichael Ellerman inode->i_ino = get_next_ino(); 8667207b96SArnd Bergmann inode->i_mode = mode; 871330deb0SDavid Howells inode->i_uid = current_fsuid(); 881330deb0SDavid Howells inode->i_gid = current_fsgid(); 89078cd827SDeepa Dinamani inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); 9067207b96SArnd Bergmann out: 9167207b96SArnd Bergmann return inode; 9267207b96SArnd Bergmann } 9367207b96SArnd Bergmann 9467207b96SArnd Bergmann static int 95c1632a0fSChristian Brauner spufs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 96549c7297SChristian Brauner struct iattr *attr) 9767207b96SArnd Bergmann { 9875c3cfa8SDavid Howells struct inode *inode = d_inode(dentry); 9967207b96SArnd Bergmann 10067207b96SArnd Bergmann if ((attr->ia_valid & ATTR_SIZE) && 10167207b96SArnd Bergmann (attr->ia_size != inode->i_size)) 10267207b96SArnd Bergmann return -EINVAL; 103c1632a0fSChristian Brauner setattr_copy(&nop_mnt_idmap, inode, attr); 1041025774cSChristoph Hellwig mark_inode_dirty(inode); 1051025774cSChristoph Hellwig return 0; 10667207b96SArnd Bergmann } 10767207b96SArnd Bergmann 10867207b96SArnd Bergmann 10967207b96SArnd Bergmann static int 11067207b96SArnd Bergmann spufs_new_file(struct super_block *sb, struct dentry *dentry, 111c6684b26SAl Viro const struct file_operations *fops, umode_t mode, 11223d893f5SJeremy Kerr size_t size, struct spu_context *ctx) 11367207b96SArnd Bergmann { 1146e1d5dccSAlexey Dobriyan static const struct inode_operations spufs_file_iops = { 11567207b96SArnd Bergmann .setattr = spufs_setattr, 11667207b96SArnd Bergmann }; 11767207b96SArnd Bergmann struct inode *inode; 11867207b96SArnd Bergmann int ret; 11967207b96SArnd Bergmann 12067207b96SArnd Bergmann ret = -ENOSPC; 12167207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFREG | mode); 12267207b96SArnd Bergmann if (!inode) 12367207b96SArnd Bergmann goto out; 12467207b96SArnd Bergmann 12567207b96SArnd Bergmann ret = 0; 12667207b96SArnd Bergmann inode->i_op = &spufs_file_iops; 12767207b96SArnd Bergmann inode->i_fop = fops; 12823d893f5SJeremy Kerr inode->i_size = size; 1298e18e294STheodore Ts'o inode->i_private = SPUFS_I(inode)->i_ctx = get_spu_context(ctx); 13067207b96SArnd Bergmann d_add(dentry, inode); 13167207b96SArnd Bergmann out: 13267207b96SArnd Bergmann return ret; 13367207b96SArnd Bergmann } 13467207b96SArnd Bergmann 13567207b96SArnd Bergmann static void 1360f3f63a4SAl Viro spufs_evict_inode(struct inode *inode) 13767207b96SArnd Bergmann { 1386263203eSArnd Bergmann struct spufs_inode_info *ei = SPUFS_I(inode); 139dbd5768fSJan Kara clear_inode(inode); 1406263203eSArnd Bergmann if (ei->i_ctx) 1416263203eSArnd Bergmann put_spu_context(ei->i_ctx); 1426263203eSArnd Bergmann if (ei->i_gang) 1436263203eSArnd Bergmann put_spu_gang(ei->i_gang); 14467207b96SArnd Bergmann } 14567207b96SArnd Bergmann 1463f51dd91SArnd Bergmann static void spufs_prune_dir(struct dentry *dir) 1473f51dd91SArnd Bergmann { 1483f51dd91SArnd Bergmann struct dentry *dentry, *tmp; 1496263203eSArnd Bergmann 1505955102cSAl Viro inode_lock(d_inode(dir)); 151946e51f2SAl Viro list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) { 1523f51dd91SArnd Bergmann spin_lock(&dentry->d_lock); 153dc3f4198SAl Viro if (simple_positive(dentry)) { 154dc0474beSNick Piggin dget_dlock(dentry); 1553f51dd91SArnd Bergmann __d_drop(dentry); 1563f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 15775c3cfa8SDavid Howells simple_unlink(d_inode(dir), dentry); 158b5c84bf6SNick Piggin /* XXX: what was dcache_lock protecting here? Other 159da502956SNick Piggin * filesystems (IB, configfs) release dcache_lock 160da502956SNick Piggin * before unlink */ 1613f51dd91SArnd Bergmann dput(dentry); 1623f51dd91SArnd Bergmann } else { 1633f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1643f51dd91SArnd Bergmann } 1653f51dd91SArnd Bergmann } 1663f51dd91SArnd Bergmann shrink_dcache_parent(dir); 1675955102cSAl Viro inode_unlock(d_inode(dir)); 1683f51dd91SArnd Bergmann } 1693f51dd91SArnd Bergmann 1706263203eSArnd Bergmann /* Caller must hold parent->i_mutex */ 1716263203eSArnd Bergmann static int spufs_rmdir(struct inode *parent, struct dentry *dir) 1723f51dd91SArnd Bergmann { 1733f51dd91SArnd Bergmann /* remove all entries */ 17467cba9fdSAl Viro int res; 1756263203eSArnd Bergmann spufs_prune_dir(dir); 176c443acabSJeremy Kerr d_drop(dir); 17767cba9fdSAl Viro res = simple_rmdir(parent, dir); 17867cba9fdSAl Viro /* We have to give up the mm_struct */ 17975c3cfa8SDavid Howells spu_forget(SPUFS_I(d_inode(dir))->i_ctx); 18067cba9fdSAl Viro return res; 1813f51dd91SArnd Bergmann } 1823f51dd91SArnd Bergmann 18374254647SJeremy Kerr static int spufs_fill_dir(struct dentry *dir, 184c6684b26SAl Viro const struct spufs_tree_descr *files, umode_t mode, 18574254647SJeremy Kerr struct spu_context *ctx) 18667207b96SArnd Bergmann { 18767207b96SArnd Bergmann while (files->name && files->name[0]) { 1882248b87eSAl Viro int ret; 1892248b87eSAl Viro struct dentry *dentry = d_alloc_name(dir, files->name); 19067207b96SArnd Bergmann if (!dentry) 1912248b87eSAl Viro return -ENOMEM; 19267207b96SArnd Bergmann ret = spufs_new_file(dir->d_sb, dentry, files->ops, 19323d893f5SJeremy Kerr files->mode & mode, files->size, ctx); 19467207b96SArnd Bergmann if (ret) 1952248b87eSAl Viro return ret; 19667207b96SArnd Bergmann files++; 19767207b96SArnd Bergmann } 19867207b96SArnd Bergmann return 0; 19967207b96SArnd Bergmann } 20067207b96SArnd Bergmann 20167207b96SArnd Bergmann static int spufs_dir_close(struct inode *inode, struct file *file) 20267207b96SArnd Bergmann { 2036263203eSArnd Bergmann struct inode *parent; 2046263203eSArnd Bergmann struct dentry *dir; 20567207b96SArnd Bergmann int ret; 20667207b96SArnd Bergmann 207b4d1ab58SJosef Sipek dir = file->f_path.dentry; 20875c3cfa8SDavid Howells parent = d_inode(dir->d_parent); 209c8ca0633SArnd Bergmann 2105955102cSAl Viro inode_lock_nested(parent, I_MUTEX_PARENT); 2116263203eSArnd Bergmann ret = spufs_rmdir(parent, dir); 2125955102cSAl Viro inode_unlock(parent); 21367207b96SArnd Bergmann WARN_ON(ret); 214c8ca0633SArnd Bergmann 21567207b96SArnd Bergmann return dcache_dir_close(inode, file); 21667207b96SArnd Bergmann } 21767207b96SArnd Bergmann 2185dfe4c96SArjan van de Ven const struct file_operations spufs_context_fops = { 21967207b96SArnd Bergmann .open = dcache_dir_open, 22067207b96SArnd Bergmann .release = spufs_dir_close, 22167207b96SArnd Bergmann .llseek = dcache_dir_lseek, 22267207b96SArnd Bergmann .read = generic_read_dir, 2234e82901cSAl Viro .iterate_shared = dcache_readdir, 2241b061d92SChristoph Hellwig .fsync = noop_fsync, 22567207b96SArnd Bergmann }; 226bf1ab978SDwayne Grant McConnell EXPORT_SYMBOL_GPL(spufs_context_fops); 22767207b96SArnd Bergmann 22867207b96SArnd Bergmann static int 2299add11daSArnd Bergmann spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags, 230c6684b26SAl Viro umode_t mode) 23167207b96SArnd Bergmann { 23267207b96SArnd Bergmann int ret; 23367207b96SArnd Bergmann struct inode *inode; 23467207b96SArnd Bergmann struct spu_context *ctx; 23567207b96SArnd Bergmann 23667207b96SArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 23767207b96SArnd Bergmann if (!inode) 2382248b87eSAl Viro return -ENOSPC; 23967207b96SArnd Bergmann 240*f2d40141SChristian Brauner inode_init_owner(&nop_mnt_idmap, inode, dir, mode | S_IFDIR); 2416263203eSArnd Bergmann ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */ 24267207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = ctx; 2432248b87eSAl Viro if (!ctx) { 2442248b87eSAl Viro iput(inode); 2452248b87eSAl Viro return -ENOSPC; 2462248b87eSAl Viro } 24767207b96SArnd Bergmann 2489add11daSArnd Bergmann ctx->flags = flags; 249b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 25067207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 2512248b87eSAl Viro 2525955102cSAl Viro inode_lock(inode); 2532248b87eSAl Viro 2542248b87eSAl Viro dget(dentry); 2552248b87eSAl Viro inc_nlink(dir); 2562248b87eSAl Viro inc_nlink(inode); 2572248b87eSAl Viro 2582248b87eSAl Viro d_instantiate(dentry, inode); 2592248b87eSAl Viro 2605737edd1SMark Nutter if (flags & SPU_CREATE_NOSCHED) 2615737edd1SMark Nutter ret = spufs_fill_dir(dentry, spufs_dir_nosched_contents, 2625737edd1SMark Nutter mode, ctx); 2635737edd1SMark Nutter else 26467207b96SArnd Bergmann ret = spufs_fill_dir(dentry, spufs_dir_contents, mode, ctx); 2655737edd1SMark Nutter 2662248b87eSAl Viro if (!ret && spufs_get_sb_info(dir->i_sb)->debug) 2672c3e4787SJeremy Kerr ret = spufs_fill_dir(dentry, spufs_dir_debug_contents, 2682c3e4787SJeremy Kerr mode, ctx); 2692c3e4787SJeremy Kerr 2702c3e4787SJeremy Kerr if (ret) 2712248b87eSAl Viro spufs_rmdir(dir, dentry); 2722c3e4787SJeremy Kerr 2735955102cSAl Viro inode_unlock(inode); 27467207b96SArnd Bergmann 27567207b96SArnd Bergmann return ret; 27667207b96SArnd Bergmann } 27767207b96SArnd Bergmann 27820f45ad5SAl Viro static int spufs_context_open(const struct path *path) 279346f4d3cSArnd Bergmann { 280346f4d3cSArnd Bergmann int ret; 281346f4d3cSArnd Bergmann struct file *filp; 282346f4d3cSArnd Bergmann 2836b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 284bf349a44SAl Viro if (ret < 0) 285bf349a44SAl Viro return ret; 286346f4d3cSArnd Bergmann 287765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 288346f4d3cSArnd Bergmann if (IS_ERR(filp)) { 289346f4d3cSArnd Bergmann put_unused_fd(ret); 290bf349a44SAl Viro return PTR_ERR(filp); 291346f4d3cSArnd Bergmann } 292346f4d3cSArnd Bergmann 293346f4d3cSArnd Bergmann filp->f_op = &spufs_context_fops; 294346f4d3cSArnd Bergmann fd_install(ret, filp); 295346f4d3cSArnd Bergmann return ret; 296346f4d3cSArnd Bergmann } 297346f4d3cSArnd Bergmann 2988e68e2f2SArnd Bergmann static struct spu_context * 2998e68e2f2SArnd Bergmann spufs_assert_affinity(unsigned int flags, struct spu_gang *gang, 3008e68e2f2SArnd Bergmann struct file *filp) 3018e68e2f2SArnd Bergmann { 30258119068SAndre Detsch struct spu_context *tmp, *neighbor, *err; 3038e68e2f2SArnd Bergmann int count, node; 3048e68e2f2SArnd Bergmann int aff_supp; 3058e68e2f2SArnd Bergmann 3068e68e2f2SArnd Bergmann aff_supp = !list_empty(&(list_entry(cbe_spu_info[0].spus.next, 3078e68e2f2SArnd Bergmann struct spu, cbe_list))->aff_list); 3088e68e2f2SArnd Bergmann 3098e68e2f2SArnd Bergmann if (!aff_supp) 3108e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3118e68e2f2SArnd Bergmann 3128e68e2f2SArnd Bergmann if (flags & SPU_CREATE_GANG) 3138e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3148e68e2f2SArnd Bergmann 3158e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM && 3168e68e2f2SArnd Bergmann gang->aff_ref_ctx && 3178e68e2f2SArnd Bergmann gang->aff_ref_ctx->flags & SPU_CREATE_AFFINITY_MEM) 3188e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3198e68e2f2SArnd Bergmann 3208e68e2f2SArnd Bergmann if (gang->aff_flags & AFF_MERGED) 3218e68e2f2SArnd Bergmann return ERR_PTR(-EBUSY); 3228e68e2f2SArnd Bergmann 3238e68e2f2SArnd Bergmann neighbor = NULL; 3248e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3258e68e2f2SArnd Bergmann if (!filp || filp->f_op != &spufs_context_fops) 3268e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3278e68e2f2SArnd Bergmann 3288e68e2f2SArnd Bergmann neighbor = get_spu_context( 329496ad9aaSAl Viro SPUFS_I(file_inode(filp))->i_ctx); 3308e68e2f2SArnd Bergmann 3318e68e2f2SArnd Bergmann if (!list_empty(&neighbor->aff_list) && !(neighbor->aff_head) && 3328e68e2f2SArnd Bergmann !list_is_last(&neighbor->aff_list, &gang->aff_list_head) && 3338e68e2f2SArnd Bergmann !list_entry(neighbor->aff_list.next, struct spu_context, 33458119068SAndre Detsch aff_list)->aff_head) { 33558119068SAndre Detsch err = ERR_PTR(-EEXIST); 33658119068SAndre Detsch goto out_put_neighbor; 33758119068SAndre Detsch } 3388e68e2f2SArnd Bergmann 33958119068SAndre Detsch if (gang != neighbor->gang) { 34058119068SAndre Detsch err = ERR_PTR(-EINVAL); 34158119068SAndre Detsch goto out_put_neighbor; 34258119068SAndre Detsch } 3438e68e2f2SArnd Bergmann 3448e68e2f2SArnd Bergmann count = 1; 3458e68e2f2SArnd Bergmann list_for_each_entry(tmp, &gang->aff_list_head, aff_list) 3468e68e2f2SArnd Bergmann count++; 3478e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) 3488e68e2f2SArnd Bergmann count++; 3498e68e2f2SArnd Bergmann 3508e68e2f2SArnd Bergmann for (node = 0; node < MAX_NUMNODES; node++) { 3518e68e2f2SArnd Bergmann if ((cbe_spu_info[node].n_spus - atomic_read( 3528e68e2f2SArnd Bergmann &cbe_spu_info[node].reserved_spus)) >= count) 3538e68e2f2SArnd Bergmann break; 3548e68e2f2SArnd Bergmann } 3558e68e2f2SArnd Bergmann 35658119068SAndre Detsch if (node == MAX_NUMNODES) { 35758119068SAndre Detsch err = ERR_PTR(-EEXIST); 35858119068SAndre Detsch goto out_put_neighbor; 35958119068SAndre Detsch } 3608e68e2f2SArnd Bergmann } 3618e68e2f2SArnd Bergmann 3628e68e2f2SArnd Bergmann return neighbor; 36358119068SAndre Detsch 36458119068SAndre Detsch out_put_neighbor: 36558119068SAndre Detsch put_spu_context(neighbor); 36658119068SAndre Detsch return err; 3678e68e2f2SArnd Bergmann } 3688e68e2f2SArnd Bergmann 3698e68e2f2SArnd Bergmann static void 3708e68e2f2SArnd Bergmann spufs_set_affinity(unsigned int flags, struct spu_context *ctx, 3718e68e2f2SArnd Bergmann struct spu_context *neighbor) 3728e68e2f2SArnd Bergmann { 3738e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM) 3748e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3758e68e2f2SArnd Bergmann 3768e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3778e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) { 3788e68e2f2SArnd Bergmann list_add_tail(&neighbor->aff_list, 3798e68e2f2SArnd Bergmann &ctx->gang->aff_list_head); 3808e68e2f2SArnd Bergmann neighbor->aff_head = 1; 3818e68e2f2SArnd Bergmann } 3828e68e2f2SArnd Bergmann 3838e68e2f2SArnd Bergmann if (list_is_last(&neighbor->aff_list, &ctx->gang->aff_list_head) 3848e68e2f2SArnd Bergmann || list_entry(neighbor->aff_list.next, struct spu_context, 3858e68e2f2SArnd Bergmann aff_list)->aff_head) { 3868e68e2f2SArnd Bergmann list_add(&ctx->aff_list, &neighbor->aff_list); 3878e68e2f2SArnd Bergmann } else { 3888e68e2f2SArnd Bergmann list_add_tail(&ctx->aff_list, &neighbor->aff_list); 3898e68e2f2SArnd Bergmann if (neighbor->aff_head) { 3908e68e2f2SArnd Bergmann neighbor->aff_head = 0; 3918e68e2f2SArnd Bergmann ctx->aff_head = 1; 3928e68e2f2SArnd Bergmann } 3938e68e2f2SArnd Bergmann } 3948e68e2f2SArnd Bergmann 3958e68e2f2SArnd Bergmann if (!ctx->gang->aff_ref_ctx) 3968e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3978e68e2f2SArnd Bergmann } 3988e68e2f2SArnd Bergmann } 3998e68e2f2SArnd Bergmann 4008e68e2f2SArnd Bergmann static int 4018e68e2f2SArnd Bergmann spufs_create_context(struct inode *inode, struct dentry *dentry, 402c6684b26SAl Viro struct vfsmount *mnt, int flags, umode_t mode, 4038e68e2f2SArnd Bergmann struct file *aff_filp) 4046263203eSArnd Bergmann { 4056263203eSArnd Bergmann int ret; 4068e68e2f2SArnd Bergmann int affinity; 4078e68e2f2SArnd Bergmann struct spu_gang *gang; 4088e68e2f2SArnd Bergmann struct spu_context *neighbor; 409765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 4106263203eSArnd Bergmann 4115737edd1SMark Nutter if ((flags & SPU_CREATE_NOSCHED) && 4125737edd1SMark Nutter !capable(CAP_SYS_NICE)) 4131ba44cc9SAl Viro return -EPERM; 4145737edd1SMark Nutter 4155737edd1SMark Nutter if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE)) 4165737edd1SMark Nutter == SPU_CREATE_ISOLATE) 4171ba44cc9SAl Viro return -EINVAL; 4185737edd1SMark Nutter 419bd2e5f82SJeremy Kerr if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader) 4201ba44cc9SAl Viro return -ENODEV; 421bd2e5f82SJeremy Kerr 4228e68e2f2SArnd Bergmann gang = NULL; 4238e68e2f2SArnd Bergmann neighbor = NULL; 4248e68e2f2SArnd Bergmann affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU); 4258e68e2f2SArnd Bergmann if (affinity) { 4268e68e2f2SArnd Bergmann gang = SPUFS_I(inode)->i_gang; 4278e68e2f2SArnd Bergmann if (!gang) 4281ba44cc9SAl Viro return -EINVAL; 4298e68e2f2SArnd Bergmann mutex_lock(&gang->aff_mutex); 4308e68e2f2SArnd Bergmann neighbor = spufs_assert_affinity(flags, gang, aff_filp); 4318e68e2f2SArnd Bergmann if (IS_ERR(neighbor)) { 4328e68e2f2SArnd Bergmann ret = PTR_ERR(neighbor); 4338e68e2f2SArnd Bergmann goto out_aff_unlock; 4348e68e2f2SArnd Bergmann } 4358e68e2f2SArnd Bergmann } 4368e68e2f2SArnd Bergmann 43757ad583fSRussell Currey ret = spufs_mkdir(inode, dentry, flags, mode & 0777); 4386263203eSArnd Bergmann if (ret) 4398e68e2f2SArnd Bergmann goto out_aff_unlock; 4408e68e2f2SArnd Bergmann 44158119068SAndre Detsch if (affinity) { 44275c3cfa8SDavid Howells spufs_set_affinity(flags, SPUFS_I(d_inode(dentry))->i_ctx, 4438e68e2f2SArnd Bergmann neighbor); 44458119068SAndre Detsch if (neighbor) 44558119068SAndre Detsch put_spu_context(neighbor); 44658119068SAndre Detsch } 4476263203eSArnd Bergmann 448765927b2SAl Viro ret = spufs_context_open(&path); 44966ec7b2cSAl Viro if (ret < 0) 4506263203eSArnd Bergmann WARN_ON(spufs_rmdir(inode, dentry)); 4516263203eSArnd Bergmann 4528e68e2f2SArnd Bergmann out_aff_unlock: 4538e68e2f2SArnd Bergmann if (affinity) 4548e68e2f2SArnd Bergmann mutex_unlock(&gang->aff_mutex); 4556263203eSArnd Bergmann return ret; 4566263203eSArnd Bergmann } 4576263203eSArnd Bergmann 4586263203eSArnd Bergmann static int 459c6684b26SAl Viro spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode) 4606263203eSArnd Bergmann { 4616263203eSArnd Bergmann int ret; 4626263203eSArnd Bergmann struct inode *inode; 4636263203eSArnd Bergmann struct spu_gang *gang; 4646263203eSArnd Bergmann 4656263203eSArnd Bergmann ret = -ENOSPC; 4666263203eSArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 4676263203eSArnd Bergmann if (!inode) 4686263203eSArnd Bergmann goto out; 4696263203eSArnd Bergmann 4706263203eSArnd Bergmann ret = 0; 471*f2d40141SChristian Brauner inode_init_owner(&nop_mnt_idmap, inode, dir, mode | S_IFDIR); 4726263203eSArnd Bergmann gang = alloc_spu_gang(); 4736263203eSArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 4746263203eSArnd Bergmann SPUFS_I(inode)->i_gang = gang; 47554a94fcfSDan Carpenter if (!gang) { 47654a94fcfSDan Carpenter ret = -ENOMEM; 4776263203eSArnd Bergmann goto out_iput; 47854a94fcfSDan Carpenter } 4796263203eSArnd Bergmann 480b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 4816263203eSArnd Bergmann inode->i_fop = &simple_dir_operations; 4826263203eSArnd Bergmann 4836263203eSArnd Bergmann d_instantiate(dentry, inode); 484ba0b996dSJeremy Kerr inc_nlink(dir); 48575c3cfa8SDavid Howells inc_nlink(d_inode(dentry)); 4866263203eSArnd Bergmann return ret; 4876263203eSArnd Bergmann 4886263203eSArnd Bergmann out_iput: 4896263203eSArnd Bergmann iput(inode); 4906263203eSArnd Bergmann out: 4916263203eSArnd Bergmann return ret; 4926263203eSArnd Bergmann } 4936263203eSArnd Bergmann 49420f45ad5SAl Viro static int spufs_gang_open(const struct path *path) 4956263203eSArnd Bergmann { 4966263203eSArnd Bergmann int ret; 4976263203eSArnd Bergmann struct file *filp; 4986263203eSArnd Bergmann 4996b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 500bf349a44SAl Viro if (ret < 0) 501bf349a44SAl Viro return ret; 5026263203eSArnd Bergmann 503bf349a44SAl Viro /* 504bf349a44SAl Viro * get references for dget and mntget, will be released 505bf349a44SAl Viro * in error path of *_open(). 506bf349a44SAl Viro */ 507765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 5086263203eSArnd Bergmann if (IS_ERR(filp)) { 5096263203eSArnd Bergmann put_unused_fd(ret); 510bf349a44SAl Viro return PTR_ERR(filp); 5116263203eSArnd Bergmann } 5126263203eSArnd Bergmann 513877907d3SJeremy Kerr filp->f_op = &simple_dir_operations; 5146263203eSArnd Bergmann fd_install(ret, filp); 5156263203eSArnd Bergmann return ret; 5166263203eSArnd Bergmann } 5176263203eSArnd Bergmann 5186263203eSArnd Bergmann static int spufs_create_gang(struct inode *inode, 5196263203eSArnd Bergmann struct dentry *dentry, 520c6684b26SAl Viro struct vfsmount *mnt, umode_t mode) 5216263203eSArnd Bergmann { 522765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 5236263203eSArnd Bergmann int ret; 5246263203eSArnd Bergmann 52557ad583fSRussell Currey ret = spufs_mkgang(inode, dentry, mode & 0777); 5261ba44cc9SAl Viro if (!ret) { 527765927b2SAl Viro ret = spufs_gang_open(&path); 528877907d3SJeremy Kerr if (ret < 0) { 529877907d3SJeremy Kerr int err = simple_rmdir(inode, dentry); 530877907d3SJeremy Kerr WARN_ON(err); 531877907d3SJeremy Kerr } 5321ba44cc9SAl Viro } 5336263203eSArnd Bergmann return ret; 5346263203eSArnd Bergmann } 5356263203eSArnd Bergmann 5366263203eSArnd Bergmann 537346f4d3cSArnd Bergmann static struct file_system_type spufs_type; 538346f4d3cSArnd Bergmann 53920f45ad5SAl Viro long spufs_create(const struct path *path, struct dentry *dentry, 540c6684b26SAl Viro unsigned int flags, umode_t mode, struct file *filp) 54167207b96SArnd Bergmann { 54275c3cfa8SDavid Howells struct inode *dir = d_inode(path->dentry); 54367207b96SArnd Bergmann int ret; 54467207b96SArnd Bergmann 5456263203eSArnd Bergmann /* check if we are on spufs */ 5461ba10681SAl Viro if (path->dentry->d_sb->s_type != &spufs_type) 54725b2692aSAl Viro return -EINVAL; 54867207b96SArnd Bergmann 5496263203eSArnd Bergmann /* don't accept undefined flags */ 5509add11daSArnd Bergmann if (flags & (~SPU_CREATE_FLAG_ALL)) 55125b2692aSAl Viro return -EINVAL; 552c9832948Sarnd@arndb.de 5536263203eSArnd Bergmann /* only threads can be underneath a gang */ 55425b2692aSAl Viro if (path->dentry != path->dentry->d_sb->s_root) 55525b2692aSAl Viro if ((flags & SPU_CREATE_GANG) || !SPUFS_I(dir)->i_gang) 55625b2692aSAl Viro return -EINVAL; 5576263203eSArnd Bergmann 558ce3b0f8dSAl Viro mode &= ~current_umask(); 55967207b96SArnd Bergmann 5606263203eSArnd Bergmann if (flags & SPU_CREATE_GANG) 56125b2692aSAl Viro ret = spufs_create_gang(dir, dentry, path->mnt, mode); 5626263203eSArnd Bergmann else 56325b2692aSAl Viro ret = spufs_create_context(dir, dentry, path->mnt, flags, mode, 5644ac91378SJan Blunck filp); 565826be063SChristoph Hellwig if (ret >= 0) 56625b2692aSAl Viro fsnotify_mkdir(dir, dentry); 56767207b96SArnd Bergmann 56867207b96SArnd Bergmann return ret; 56967207b96SArnd Bergmann } 57067207b96SArnd Bergmann 57167207b96SArnd Bergmann /* File system initialization */ 572d2e0981cSDavid Howells struct spufs_fs_context { 573d2e0981cSDavid Howells kuid_t uid; 574d2e0981cSDavid Howells kgid_t gid; 575d2e0981cSDavid Howells umode_t mode; 57667207b96SArnd Bergmann }; 57767207b96SArnd Bergmann 578d2e0981cSDavid Howells enum { 579d2e0981cSDavid Howells Opt_uid, Opt_gid, Opt_mode, Opt_debug, 580d2e0981cSDavid Howells }; 581d2e0981cSDavid Howells 582d7167b14SAl Viro static const struct fs_parameter_spec spufs_fs_parameters[] = { 583d2e0981cSDavid Howells fsparam_u32 ("gid", Opt_gid), 584d2e0981cSDavid Howells fsparam_u32oct ("mode", Opt_mode), 585d2e0981cSDavid Howells fsparam_u32 ("uid", Opt_uid), 586d2e0981cSDavid Howells fsparam_flag ("debug", Opt_debug), 587d2e0981cSDavid Howells {} 588d2e0981cSDavid Howells }; 589d2e0981cSDavid Howells 590a66ca414SDavid Howells static int spufs_show_options(struct seq_file *m, struct dentry *root) 591a66ca414SDavid Howells { 592a66ca414SDavid Howells struct spufs_sb_info *sbi = spufs_get_sb_info(root->d_sb); 593a66ca414SDavid Howells struct inode *inode = root->d_inode; 594a66ca414SDavid Howells 595a66ca414SDavid Howells if (!uid_eq(inode->i_uid, GLOBAL_ROOT_UID)) 596a66ca414SDavid Howells seq_printf(m, ",uid=%u", 597a66ca414SDavid Howells from_kuid_munged(&init_user_ns, inode->i_uid)); 598a66ca414SDavid Howells if (!gid_eq(inode->i_gid, GLOBAL_ROOT_GID)) 599a66ca414SDavid Howells seq_printf(m, ",gid=%u", 600a66ca414SDavid Howells from_kgid_munged(&init_user_ns, inode->i_gid)); 601a66ca414SDavid Howells if ((inode->i_mode & S_IALLUGO) != 0775) 602a66ca414SDavid Howells seq_printf(m, ",mode=%o", inode->i_mode); 603a66ca414SDavid Howells if (sbi->debug) 604a66ca414SDavid Howells seq_puts(m, ",debug"); 605a66ca414SDavid Howells return 0; 606a66ca414SDavid Howells } 607a66ca414SDavid Howells 608d2e0981cSDavid Howells static int spufs_parse_param(struct fs_context *fc, struct fs_parameter *param) 60967207b96SArnd Bergmann { 610d2e0981cSDavid Howells struct spufs_fs_context *ctx = fc->fs_private; 611d2e0981cSDavid Howells struct spufs_sb_info *sbi = fc->s_fs_info; 612d2e0981cSDavid Howells struct fs_parse_result result; 613d2e0981cSDavid Howells kuid_t uid; 614d2e0981cSDavid Howells kgid_t gid; 615d2e0981cSDavid Howells int opt; 61667207b96SArnd Bergmann 617d7167b14SAl Viro opt = fs_parse(fc, spufs_fs_parameters, param, &result); 618d2e0981cSDavid Howells if (opt < 0) 619d2e0981cSDavid Howells return opt; 62067207b96SArnd Bergmann 621d2e0981cSDavid Howells switch (opt) { 62267207b96SArnd Bergmann case Opt_uid: 623d2e0981cSDavid Howells uid = make_kuid(current_user_ns(), result.uint_32); 624d2e0981cSDavid Howells if (!uid_valid(uid)) 625d2e0981cSDavid Howells return invalf(fc, "Unknown uid"); 626d2e0981cSDavid Howells ctx->uid = uid; 62767207b96SArnd Bergmann break; 62867207b96SArnd Bergmann case Opt_gid: 629d2e0981cSDavid Howells gid = make_kgid(current_user_ns(), result.uint_32); 630d2e0981cSDavid Howells if (!gid_valid(gid)) 631d2e0981cSDavid Howells return invalf(fc, "Unknown gid"); 632d2e0981cSDavid Howells ctx->gid = gid; 63367207b96SArnd Bergmann break; 634f11f5ee7SJeremy Kerr case Opt_mode: 635d2e0981cSDavid Howells ctx->mode = result.uint_32 & S_IALLUGO; 636f11f5ee7SJeremy Kerr break; 6372c3e4787SJeremy Kerr case Opt_debug: 638d2e0981cSDavid Howells sbi->debug = true; 6392c3e4787SJeremy Kerr break; 640d2e0981cSDavid Howells } 641d2e0981cSDavid Howells 64267207b96SArnd Bergmann return 0; 64367207b96SArnd Bergmann } 64467207b96SArnd Bergmann 645db1384b4SAkinobu Mita static void spufs_exit_isolated_loader(void) 646db1384b4SAkinobu Mita { 6478b0d3121SSebastian Siewior free_pages((unsigned long) isolated_loader, 6488b0d3121SSebastian Siewior get_order(isolated_loader_size)); 649db1384b4SAkinobu Mita } 650db1384b4SAkinobu Mita 6517c1ab16bSNick Child static void __init 6520afacde3Sarnd@arndb.de spufs_init_isolated_loader(void) 6530afacde3Sarnd@arndb.de { 6540afacde3Sarnd@arndb.de struct device_node *dn; 6550afacde3Sarnd@arndb.de const char *loader; 6560afacde3Sarnd@arndb.de int size; 6570afacde3Sarnd@arndb.de 6580afacde3Sarnd@arndb.de dn = of_find_node_by_path("/spu-isolation"); 6590afacde3Sarnd@arndb.de if (!dn) 6600afacde3Sarnd@arndb.de return; 6610afacde3Sarnd@arndb.de 662e2eb6392SStephen Rothwell loader = of_get_property(dn, "loader", &size); 6636ac059daSMiaoqian Lin of_node_put(dn); 6640afacde3Sarnd@arndb.de if (!loader) 6650afacde3Sarnd@arndb.de return; 6660afacde3Sarnd@arndb.de 6678b0d3121SSebastian Siewior /* the loader must be align on a 16 byte boundary */ 6688b0d3121SSebastian Siewior isolated_loader = (char *)__get_free_pages(GFP_KERNEL, get_order(size)); 6690afacde3Sarnd@arndb.de if (!isolated_loader) 6700afacde3Sarnd@arndb.de return; 6710afacde3Sarnd@arndb.de 6728b0d3121SSebastian Siewior isolated_loader_size = size; 6730afacde3Sarnd@arndb.de memcpy(isolated_loader, loader, size); 6740afacde3Sarnd@arndb.de printk(KERN_INFO "spufs: SPU isolation mode enabled\n"); 6750afacde3Sarnd@arndb.de } 6760afacde3Sarnd@arndb.de 677d2e0981cSDavid Howells static int spufs_create_root(struct super_block *sb, struct fs_context *fc) 6788b3d6663SArnd Bergmann { 679d2e0981cSDavid Howells struct spufs_fs_context *ctx = fc->fs_private; 68067207b96SArnd Bergmann struct inode *inode; 68167207b96SArnd Bergmann 6828f18a158SArnd Bergmann if (!spu_management_ops) 683d2e0981cSDavid Howells return -ENODEV; 6848f18a158SArnd Bergmann 685d2e0981cSDavid Howells inode = spufs_new_inode(sb, S_IFDIR | ctx->mode); 68667207b96SArnd Bergmann if (!inode) 687d2e0981cSDavid Howells return -ENOMEM; 68867207b96SArnd Bergmann 689d2e0981cSDavid Howells inode->i_uid = ctx->uid; 690d2e0981cSDavid Howells inode->i_gid = ctx->gid; 691b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 69267207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 69367207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 694e2ed6e4dSJeremy Kerr inc_nlink(inode); 69567207b96SArnd Bergmann 69648fde701SAl Viro sb->s_root = d_make_root(inode); 69767207b96SArnd Bergmann if (!sb->s_root) 698d2e0981cSDavid Howells return -ENOMEM; 69967207b96SArnd Bergmann return 0; 70067207b96SArnd Bergmann } 70167207b96SArnd Bergmann 702d2e0981cSDavid Howells static const struct super_operations spufs_ops = { 70367207b96SArnd Bergmann .alloc_inode = spufs_alloc_inode, 7046d0e0d0bSAl Viro .free_inode = spufs_free_inode, 70567207b96SArnd Bergmann .statfs = simple_statfs, 7060f3f63a4SAl Viro .evict_inode = spufs_evict_inode, 707a66ca414SDavid Howells .show_options = spufs_show_options, 70867207b96SArnd Bergmann }; 70967207b96SArnd Bergmann 710d2e0981cSDavid Howells static int spufs_fill_super(struct super_block *sb, struct fs_context *fc) 711d2e0981cSDavid Howells { 71267207b96SArnd Bergmann sb->s_maxbytes = MAX_LFS_FILESIZE; 71309cbfeafSKirill A. Shutemov sb->s_blocksize = PAGE_SIZE; 71409cbfeafSKirill A. Shutemov sb->s_blocksize_bits = PAGE_SHIFT; 71567207b96SArnd Bergmann sb->s_magic = SPUFS_MAGIC; 716d2e0981cSDavid Howells sb->s_op = &spufs_ops; 71767207b96SArnd Bergmann 718d2e0981cSDavid Howells return spufs_create_root(sb, fc); 71967207b96SArnd Bergmann } 72067207b96SArnd Bergmann 721d2e0981cSDavid Howells static int spufs_get_tree(struct fs_context *fc) 72267207b96SArnd Bergmann { 723d2e0981cSDavid Howells return get_tree_single(fc, spufs_fill_super); 724d2e0981cSDavid Howells } 725d2e0981cSDavid Howells 726d2e0981cSDavid Howells static void spufs_free_fc(struct fs_context *fc) 727d2e0981cSDavid Howells { 728d2e0981cSDavid Howells kfree(fc->s_fs_info); 729d2e0981cSDavid Howells } 730d2e0981cSDavid Howells 731d2e0981cSDavid Howells static const struct fs_context_operations spufs_context_ops = { 732d2e0981cSDavid Howells .free = spufs_free_fc, 733d2e0981cSDavid Howells .parse_param = spufs_parse_param, 734d2e0981cSDavid Howells .get_tree = spufs_get_tree, 735d2e0981cSDavid Howells }; 736d2e0981cSDavid Howells 737d2e0981cSDavid Howells static int spufs_init_fs_context(struct fs_context *fc) 738d2e0981cSDavid Howells { 739d2e0981cSDavid Howells struct spufs_fs_context *ctx; 740d2e0981cSDavid Howells struct spufs_sb_info *sbi; 741d2e0981cSDavid Howells 742d2e0981cSDavid Howells ctx = kzalloc(sizeof(struct spufs_fs_context), GFP_KERNEL); 743d2e0981cSDavid Howells if (!ctx) 744d2e0981cSDavid Howells goto nomem; 745d2e0981cSDavid Howells 746d2e0981cSDavid Howells sbi = kzalloc(sizeof(struct spufs_sb_info), GFP_KERNEL); 747d2e0981cSDavid Howells if (!sbi) 748d2e0981cSDavid Howells goto nomem_ctx; 749d2e0981cSDavid Howells 750d2e0981cSDavid Howells ctx->uid = current_uid(); 751d2e0981cSDavid Howells ctx->gid = current_gid(); 752d2e0981cSDavid Howells ctx->mode = 0755; 753d2e0981cSDavid Howells 7542272905aSEmmanuel Nicolet fc->fs_private = ctx; 755d2e0981cSDavid Howells fc->s_fs_info = sbi; 756d2e0981cSDavid Howells fc->ops = &spufs_context_ops; 757d2e0981cSDavid Howells return 0; 758d2e0981cSDavid Howells 759d2e0981cSDavid Howells nomem_ctx: 760d2e0981cSDavid Howells kfree(ctx); 761d2e0981cSDavid Howells nomem: 762d2e0981cSDavid Howells return -ENOMEM; 76367207b96SArnd Bergmann } 76467207b96SArnd Bergmann 76567207b96SArnd Bergmann static struct file_system_type spufs_type = { 76667207b96SArnd Bergmann .owner = THIS_MODULE, 76767207b96SArnd Bergmann .name = "spufs", 768d2e0981cSDavid Howells .init_fs_context = spufs_init_fs_context, 769d7167b14SAl Viro .parameters = spufs_fs_parameters, 77067207b96SArnd Bergmann .kill_sb = kill_litter_super, 77167207b96SArnd Bergmann }; 7727f78e035SEric W. Biederman MODULE_ALIAS_FS("spufs"); 77367207b96SArnd Bergmann 774e78b47a5SArnd Bergmann static int __init spufs_init(void) 77567207b96SArnd Bergmann { 77667207b96SArnd Bergmann int ret; 777bf1ab978SDwayne Grant McConnell 778ccf17e9dSJeremy Kerr ret = -ENODEV; 779ccf17e9dSJeremy Kerr if (!spu_management_ops) 780ccf17e9dSJeremy Kerr goto out; 781ccf17e9dSJeremy Kerr 78267207b96SArnd Bergmann ret = -ENOMEM; 78367207b96SArnd Bergmann spufs_inode_cache = kmem_cache_create("spufs_inode_cache", 78467207b96SArnd Bergmann sizeof(struct spufs_inode_info), 0, 7855d097056SVladimir Davydov SLAB_HWCACHE_ALIGN|SLAB_ACCOUNT, spufs_init_once); 78667207b96SArnd Bergmann 78767207b96SArnd Bergmann if (!spufs_inode_cache) 78867207b96SArnd Bergmann goto out; 789c99c1994SAkinobu Mita ret = spu_sched_init(); 79067207b96SArnd Bergmann if (ret) 79167207b96SArnd Bergmann goto out_cache; 79267207b96SArnd Bergmann ret = register_spu_syscalls(&spufs_calls); 79367207b96SArnd Bergmann if (ret) 794640045a1SAl Viro goto out_sched; 795640045a1SAl Viro ret = register_filesystem(&spufs_type); 796640045a1SAl Viro if (ret) 797640045a1SAl Viro goto out_syscalls; 7980afacde3Sarnd@arndb.de 7990afacde3Sarnd@arndb.de spufs_init_isolated_loader(); 800bf1ab978SDwayne Grant McConnell 80167207b96SArnd Bergmann return 0; 802c99c1994SAkinobu Mita 803640045a1SAl Viro out_syscalls: 804640045a1SAl Viro unregister_spu_syscalls(&spufs_calls); 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(); 81867207b96SArnd Bergmann unregister_spu_syscalls(&spufs_calls); 81967207b96SArnd Bergmann unregister_filesystem(&spufs_type); 82067207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 82167207b96SArnd Bergmann } 82267207b96SArnd Bergmann module_exit(spufs_exit); 82367207b96SArnd Bergmann 82467207b96SArnd Bergmann MODULE_LICENSE("GPL"); 82567207b96SArnd Bergmann MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); 82667207b96SArnd Bergmann 827