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> 2467207b96SArnd Bergmann #include <linux/slab.h> 2567207b96SArnd Bergmann 260afacde3Sarnd@arndb.de #include <asm/prom.h> 2767207b96SArnd Bergmann #include <asm/spu.h> 28ccf17e9dSJeremy Kerr #include <asm/spu_priv1.h> 297c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 3067207b96SArnd Bergmann 3167207b96SArnd Bergmann #include "spufs.h" 3267207b96SArnd Bergmann 332c3e4787SJeremy Kerr struct spufs_sb_info { 34d2e0981cSDavid Howells bool debug; 352c3e4787SJeremy Kerr }; 362c3e4787SJeremy Kerr 37e18b890bSChristoph Lameter static struct kmem_cache *spufs_inode_cache; 38c6730ed4SJeremy Kerr char *isolated_loader; 398b0d3121SSebastian Siewior static int isolated_loader_size; 4067207b96SArnd Bergmann 412c3e4787SJeremy Kerr static struct spufs_sb_info *spufs_get_sb_info(struct super_block *sb) 422c3e4787SJeremy Kerr { 432c3e4787SJeremy Kerr return sb->s_fs_info; 442c3e4787SJeremy Kerr } 452c3e4787SJeremy Kerr 4667207b96SArnd Bergmann static struct inode * 4767207b96SArnd Bergmann spufs_alloc_inode(struct super_block *sb) 4867207b96SArnd Bergmann { 4967207b96SArnd Bergmann struct spufs_inode_info *ei; 5067207b96SArnd Bergmann 51e94b1766SChristoph Lameter ei = kmem_cache_alloc(spufs_inode_cache, GFP_KERNEL); 5267207b96SArnd Bergmann if (!ei) 5367207b96SArnd Bergmann return NULL; 546263203eSArnd Bergmann 556263203eSArnd Bergmann ei->i_gang = NULL; 566263203eSArnd Bergmann ei->i_ctx = NULL; 5743c2bbd9SChristoph Hellwig ei->i_openers = 0; 586263203eSArnd Bergmann 5967207b96SArnd Bergmann return &ei->vfs_inode; 6067207b96SArnd Bergmann } 6167207b96SArnd Bergmann 626d0e0d0bSAl Viro static void spufs_free_inode(struct inode *inode) 6367207b96SArnd Bergmann { 6467207b96SArnd Bergmann kmem_cache_free(spufs_inode_cache, SPUFS_I(inode)); 6567207b96SArnd Bergmann } 6667207b96SArnd Bergmann 6767207b96SArnd Bergmann static void 6851cc5068SAlexey Dobriyan spufs_init_once(void *p) 6967207b96SArnd Bergmann { 7067207b96SArnd Bergmann struct spufs_inode_info *ei = p; 7167207b96SArnd Bergmann 7267207b96SArnd Bergmann inode_init_once(&ei->vfs_inode); 7367207b96SArnd Bergmann } 7467207b96SArnd Bergmann 7567207b96SArnd Bergmann static struct inode * 76c6684b26SAl Viro spufs_new_inode(struct super_block *sb, umode_t mode) 7767207b96SArnd Bergmann { 7867207b96SArnd Bergmann struct inode *inode; 7967207b96SArnd Bergmann 8067207b96SArnd Bergmann inode = new_inode(sb); 8167207b96SArnd Bergmann if (!inode) 8267207b96SArnd Bergmann goto out; 8367207b96SArnd Bergmann 846747e832SMichael Ellerman inode->i_ino = get_next_ino(); 8567207b96SArnd Bergmann inode->i_mode = mode; 861330deb0SDavid Howells inode->i_uid = current_fsuid(); 871330deb0SDavid Howells inode->i_gid = current_fsgid(); 88078cd827SDeepa Dinamani inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); 8967207b96SArnd Bergmann out: 9067207b96SArnd Bergmann return inode; 9167207b96SArnd Bergmann } 9267207b96SArnd Bergmann 9367207b96SArnd Bergmann static int 9467207b96SArnd Bergmann spufs_setattr(struct dentry *dentry, struct iattr *attr) 9567207b96SArnd Bergmann { 9675c3cfa8SDavid Howells struct inode *inode = d_inode(dentry); 9767207b96SArnd Bergmann 9867207b96SArnd Bergmann if ((attr->ia_valid & ATTR_SIZE) && 9967207b96SArnd Bergmann (attr->ia_size != inode->i_size)) 10067207b96SArnd Bergmann return -EINVAL; 1011025774cSChristoph Hellwig setattr_copy(inode, attr); 1021025774cSChristoph Hellwig mark_inode_dirty(inode); 1031025774cSChristoph Hellwig return 0; 10467207b96SArnd Bergmann } 10567207b96SArnd Bergmann 10667207b96SArnd Bergmann 10767207b96SArnd Bergmann static int 10867207b96SArnd Bergmann spufs_new_file(struct super_block *sb, struct dentry *dentry, 109c6684b26SAl Viro const struct file_operations *fops, umode_t mode, 11023d893f5SJeremy Kerr size_t size, struct spu_context *ctx) 11167207b96SArnd Bergmann { 1126e1d5dccSAlexey Dobriyan static const struct inode_operations spufs_file_iops = { 11367207b96SArnd Bergmann .setattr = spufs_setattr, 11467207b96SArnd Bergmann }; 11567207b96SArnd Bergmann struct inode *inode; 11667207b96SArnd Bergmann int ret; 11767207b96SArnd Bergmann 11867207b96SArnd Bergmann ret = -ENOSPC; 11967207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFREG | mode); 12067207b96SArnd Bergmann if (!inode) 12167207b96SArnd Bergmann goto out; 12267207b96SArnd Bergmann 12367207b96SArnd Bergmann ret = 0; 12467207b96SArnd Bergmann inode->i_op = &spufs_file_iops; 12567207b96SArnd Bergmann inode->i_fop = fops; 12623d893f5SJeremy Kerr inode->i_size = size; 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 1340f3f63a4SAl Viro spufs_evict_inode(struct inode *inode) 13567207b96SArnd Bergmann { 1366263203eSArnd Bergmann struct spufs_inode_info *ei = SPUFS_I(inode); 137dbd5768fSJan Kara clear_inode(inode); 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 } 14367207b96SArnd Bergmann 1443f51dd91SArnd Bergmann static void spufs_prune_dir(struct dentry *dir) 1453f51dd91SArnd Bergmann { 1463f51dd91SArnd Bergmann struct dentry *dentry, *tmp; 1476263203eSArnd Bergmann 1485955102cSAl Viro inode_lock(d_inode(dir)); 149946e51f2SAl Viro list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) { 1503f51dd91SArnd Bergmann spin_lock(&dentry->d_lock); 151dc3f4198SAl Viro if (simple_positive(dentry)) { 152dc0474beSNick Piggin dget_dlock(dentry); 1533f51dd91SArnd Bergmann __d_drop(dentry); 1543f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 15575c3cfa8SDavid Howells simple_unlink(d_inode(dir), dentry); 156b5c84bf6SNick Piggin /* XXX: what was dcache_lock protecting here? Other 157da502956SNick Piggin * filesystems (IB, configfs) release dcache_lock 158da502956SNick Piggin * before unlink */ 1593f51dd91SArnd Bergmann dput(dentry); 1603f51dd91SArnd Bergmann } else { 1613f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1623f51dd91SArnd Bergmann } 1633f51dd91SArnd Bergmann } 1643f51dd91SArnd Bergmann shrink_dcache_parent(dir); 1655955102cSAl Viro inode_unlock(d_inode(dir)); 1663f51dd91SArnd Bergmann } 1673f51dd91SArnd Bergmann 1686263203eSArnd Bergmann /* Caller must hold parent->i_mutex */ 1696263203eSArnd Bergmann static int spufs_rmdir(struct inode *parent, struct dentry *dir) 1703f51dd91SArnd Bergmann { 1713f51dd91SArnd Bergmann /* remove all entries */ 17267cba9fdSAl Viro int res; 1736263203eSArnd Bergmann spufs_prune_dir(dir); 174c443acabSJeremy Kerr d_drop(dir); 17567cba9fdSAl Viro res = simple_rmdir(parent, dir); 17667cba9fdSAl Viro /* We have to give up the mm_struct */ 17775c3cfa8SDavid Howells spu_forget(SPUFS_I(d_inode(dir))->i_ctx); 17867cba9fdSAl Viro return res; 1793f51dd91SArnd Bergmann } 1803f51dd91SArnd Bergmann 18174254647SJeremy Kerr static int spufs_fill_dir(struct dentry *dir, 182c6684b26SAl Viro const struct spufs_tree_descr *files, umode_t mode, 18374254647SJeremy Kerr struct spu_context *ctx) 18467207b96SArnd Bergmann { 18567207b96SArnd Bergmann while (files->name && files->name[0]) { 1862248b87eSAl Viro int ret; 1872248b87eSAl Viro struct dentry *dentry = d_alloc_name(dir, files->name); 18867207b96SArnd Bergmann if (!dentry) 1892248b87eSAl Viro return -ENOMEM; 19067207b96SArnd Bergmann ret = spufs_new_file(dir->d_sb, dentry, files->ops, 19123d893f5SJeremy Kerr files->mode & mode, files->size, ctx); 19267207b96SArnd Bergmann if (ret) 1932248b87eSAl Viro return ret; 19467207b96SArnd Bergmann files++; 19567207b96SArnd Bergmann } 19667207b96SArnd Bergmann return 0; 19767207b96SArnd Bergmann } 19867207b96SArnd Bergmann 19967207b96SArnd Bergmann static int spufs_dir_close(struct inode *inode, struct file *file) 20067207b96SArnd Bergmann { 2016263203eSArnd Bergmann struct inode *parent; 2026263203eSArnd Bergmann struct dentry *dir; 20367207b96SArnd Bergmann int ret; 20467207b96SArnd Bergmann 205b4d1ab58SJosef Sipek dir = file->f_path.dentry; 20675c3cfa8SDavid Howells parent = d_inode(dir->d_parent); 207c8ca0633SArnd Bergmann 2085955102cSAl Viro inode_lock_nested(parent, I_MUTEX_PARENT); 2096263203eSArnd Bergmann ret = spufs_rmdir(parent, dir); 2105955102cSAl Viro inode_unlock(parent); 21167207b96SArnd Bergmann WARN_ON(ret); 212c8ca0633SArnd Bergmann 21367207b96SArnd Bergmann return dcache_dir_close(inode, file); 21467207b96SArnd Bergmann } 21567207b96SArnd Bergmann 2165dfe4c96SArjan van de Ven const struct file_operations spufs_context_fops = { 21767207b96SArnd Bergmann .open = dcache_dir_open, 21867207b96SArnd Bergmann .release = spufs_dir_close, 21967207b96SArnd Bergmann .llseek = dcache_dir_lseek, 22067207b96SArnd Bergmann .read = generic_read_dir, 2214e82901cSAl Viro .iterate_shared = dcache_readdir, 2221b061d92SChristoph Hellwig .fsync = noop_fsync, 22367207b96SArnd Bergmann }; 224bf1ab978SDwayne Grant McConnell EXPORT_SYMBOL_GPL(spufs_context_fops); 22567207b96SArnd Bergmann 22667207b96SArnd Bergmann static int 2279add11daSArnd Bergmann spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags, 228c6684b26SAl Viro umode_t mode) 22967207b96SArnd Bergmann { 23067207b96SArnd Bergmann int ret; 23167207b96SArnd Bergmann struct inode *inode; 23267207b96SArnd Bergmann struct spu_context *ctx; 23367207b96SArnd Bergmann 23467207b96SArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 23567207b96SArnd Bergmann if (!inode) 2362248b87eSAl Viro return -ENOSPC; 23767207b96SArnd Bergmann 23867207b96SArnd Bergmann if (dir->i_mode & S_ISGID) { 23967207b96SArnd Bergmann inode->i_gid = dir->i_gid; 24067207b96SArnd Bergmann inode->i_mode &= S_ISGID; 24167207b96SArnd Bergmann } 2426263203eSArnd Bergmann ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */ 24367207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = ctx; 2442248b87eSAl Viro if (!ctx) { 2452248b87eSAl Viro iput(inode); 2462248b87eSAl Viro return -ENOSPC; 2472248b87eSAl Viro } 24867207b96SArnd Bergmann 2499add11daSArnd Bergmann ctx->flags = flags; 250b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 25167207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 2522248b87eSAl Viro 2535955102cSAl Viro inode_lock(inode); 2542248b87eSAl Viro 2552248b87eSAl Viro dget(dentry); 2562248b87eSAl Viro inc_nlink(dir); 2572248b87eSAl Viro inc_nlink(inode); 2582248b87eSAl Viro 2592248b87eSAl Viro d_instantiate(dentry, inode); 2602248b87eSAl Viro 2615737edd1SMark Nutter if (flags & SPU_CREATE_NOSCHED) 2625737edd1SMark Nutter ret = spufs_fill_dir(dentry, spufs_dir_nosched_contents, 2635737edd1SMark Nutter mode, ctx); 2645737edd1SMark Nutter else 26567207b96SArnd Bergmann ret = spufs_fill_dir(dentry, spufs_dir_contents, mode, ctx); 2665737edd1SMark Nutter 2672248b87eSAl Viro if (!ret && spufs_get_sb_info(dir->i_sb)->debug) 2682c3e4787SJeremy Kerr ret = spufs_fill_dir(dentry, spufs_dir_debug_contents, 2692c3e4787SJeremy Kerr mode, ctx); 2702c3e4787SJeremy Kerr 2712c3e4787SJeremy Kerr if (ret) 2722248b87eSAl Viro spufs_rmdir(dir, dentry); 2732c3e4787SJeremy Kerr 2745955102cSAl Viro inode_unlock(inode); 27567207b96SArnd Bergmann 27667207b96SArnd Bergmann return ret; 27767207b96SArnd Bergmann } 27867207b96SArnd Bergmann 279765927b2SAl Viro static int spufs_context_open(struct path *path) 280346f4d3cSArnd Bergmann { 281346f4d3cSArnd Bergmann int ret; 282346f4d3cSArnd Bergmann struct file *filp; 283346f4d3cSArnd Bergmann 2846b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 285bf349a44SAl Viro if (ret < 0) 286bf349a44SAl Viro return ret; 287346f4d3cSArnd Bergmann 288765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 289346f4d3cSArnd Bergmann if (IS_ERR(filp)) { 290346f4d3cSArnd Bergmann put_unused_fd(ret); 291bf349a44SAl Viro return PTR_ERR(filp); 292346f4d3cSArnd Bergmann } 293346f4d3cSArnd Bergmann 294346f4d3cSArnd Bergmann filp->f_op = &spufs_context_fops; 295346f4d3cSArnd Bergmann fd_install(ret, filp); 296346f4d3cSArnd Bergmann return ret; 297346f4d3cSArnd Bergmann } 298346f4d3cSArnd Bergmann 2998e68e2f2SArnd Bergmann static struct spu_context * 3008e68e2f2SArnd Bergmann spufs_assert_affinity(unsigned int flags, struct spu_gang *gang, 3018e68e2f2SArnd Bergmann struct file *filp) 3028e68e2f2SArnd Bergmann { 30358119068SAndre Detsch struct spu_context *tmp, *neighbor, *err; 3048e68e2f2SArnd Bergmann int count, node; 3058e68e2f2SArnd Bergmann int aff_supp; 3068e68e2f2SArnd Bergmann 3078e68e2f2SArnd Bergmann aff_supp = !list_empty(&(list_entry(cbe_spu_info[0].spus.next, 3088e68e2f2SArnd Bergmann struct spu, cbe_list))->aff_list); 3098e68e2f2SArnd Bergmann 3108e68e2f2SArnd Bergmann if (!aff_supp) 3118e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3128e68e2f2SArnd Bergmann 3138e68e2f2SArnd Bergmann if (flags & SPU_CREATE_GANG) 3148e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3158e68e2f2SArnd Bergmann 3168e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM && 3178e68e2f2SArnd Bergmann gang->aff_ref_ctx && 3188e68e2f2SArnd Bergmann gang->aff_ref_ctx->flags & SPU_CREATE_AFFINITY_MEM) 3198e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3208e68e2f2SArnd Bergmann 3218e68e2f2SArnd Bergmann if (gang->aff_flags & AFF_MERGED) 3228e68e2f2SArnd Bergmann return ERR_PTR(-EBUSY); 3238e68e2f2SArnd Bergmann 3248e68e2f2SArnd Bergmann neighbor = NULL; 3258e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3268e68e2f2SArnd Bergmann if (!filp || filp->f_op != &spufs_context_fops) 3278e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3288e68e2f2SArnd Bergmann 3298e68e2f2SArnd Bergmann neighbor = get_spu_context( 330496ad9aaSAl Viro SPUFS_I(file_inode(filp))->i_ctx); 3318e68e2f2SArnd Bergmann 3328e68e2f2SArnd Bergmann if (!list_empty(&neighbor->aff_list) && !(neighbor->aff_head) && 3338e68e2f2SArnd Bergmann !list_is_last(&neighbor->aff_list, &gang->aff_list_head) && 3348e68e2f2SArnd Bergmann !list_entry(neighbor->aff_list.next, struct spu_context, 33558119068SAndre Detsch aff_list)->aff_head) { 33658119068SAndre Detsch err = ERR_PTR(-EEXIST); 33758119068SAndre Detsch goto out_put_neighbor; 33858119068SAndre Detsch } 3398e68e2f2SArnd Bergmann 34058119068SAndre Detsch if (gang != neighbor->gang) { 34158119068SAndre Detsch err = ERR_PTR(-EINVAL); 34258119068SAndre Detsch goto out_put_neighbor; 34358119068SAndre Detsch } 3448e68e2f2SArnd Bergmann 3458e68e2f2SArnd Bergmann count = 1; 3468e68e2f2SArnd Bergmann list_for_each_entry(tmp, &gang->aff_list_head, aff_list) 3478e68e2f2SArnd Bergmann count++; 3488e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) 3498e68e2f2SArnd Bergmann count++; 3508e68e2f2SArnd Bergmann 3518e68e2f2SArnd Bergmann for (node = 0; node < MAX_NUMNODES; node++) { 3528e68e2f2SArnd Bergmann if ((cbe_spu_info[node].n_spus - atomic_read( 3538e68e2f2SArnd Bergmann &cbe_spu_info[node].reserved_spus)) >= count) 3548e68e2f2SArnd Bergmann break; 3558e68e2f2SArnd Bergmann } 3568e68e2f2SArnd Bergmann 35758119068SAndre Detsch if (node == MAX_NUMNODES) { 35858119068SAndre Detsch err = ERR_PTR(-EEXIST); 35958119068SAndre Detsch goto out_put_neighbor; 36058119068SAndre Detsch } 3618e68e2f2SArnd Bergmann } 3628e68e2f2SArnd Bergmann 3638e68e2f2SArnd Bergmann return neighbor; 36458119068SAndre Detsch 36558119068SAndre Detsch out_put_neighbor: 36658119068SAndre Detsch put_spu_context(neighbor); 36758119068SAndre Detsch return err; 3688e68e2f2SArnd Bergmann } 3698e68e2f2SArnd Bergmann 3708e68e2f2SArnd Bergmann static void 3718e68e2f2SArnd Bergmann spufs_set_affinity(unsigned int flags, struct spu_context *ctx, 3728e68e2f2SArnd Bergmann struct spu_context *neighbor) 3738e68e2f2SArnd Bergmann { 3748e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM) 3758e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3768e68e2f2SArnd Bergmann 3778e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3788e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) { 3798e68e2f2SArnd Bergmann list_add_tail(&neighbor->aff_list, 3808e68e2f2SArnd Bergmann &ctx->gang->aff_list_head); 3818e68e2f2SArnd Bergmann neighbor->aff_head = 1; 3828e68e2f2SArnd Bergmann } 3838e68e2f2SArnd Bergmann 3848e68e2f2SArnd Bergmann if (list_is_last(&neighbor->aff_list, &ctx->gang->aff_list_head) 3858e68e2f2SArnd Bergmann || list_entry(neighbor->aff_list.next, struct spu_context, 3868e68e2f2SArnd Bergmann aff_list)->aff_head) { 3878e68e2f2SArnd Bergmann list_add(&ctx->aff_list, &neighbor->aff_list); 3888e68e2f2SArnd Bergmann } else { 3898e68e2f2SArnd Bergmann list_add_tail(&ctx->aff_list, &neighbor->aff_list); 3908e68e2f2SArnd Bergmann if (neighbor->aff_head) { 3918e68e2f2SArnd Bergmann neighbor->aff_head = 0; 3928e68e2f2SArnd Bergmann ctx->aff_head = 1; 3938e68e2f2SArnd Bergmann } 3948e68e2f2SArnd Bergmann } 3958e68e2f2SArnd Bergmann 3968e68e2f2SArnd Bergmann if (!ctx->gang->aff_ref_ctx) 3978e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3988e68e2f2SArnd Bergmann } 3998e68e2f2SArnd Bergmann } 4008e68e2f2SArnd Bergmann 4018e68e2f2SArnd Bergmann static int 4028e68e2f2SArnd Bergmann spufs_create_context(struct inode *inode, struct dentry *dentry, 403c6684b26SAl Viro struct vfsmount *mnt, int flags, umode_t mode, 4048e68e2f2SArnd Bergmann struct file *aff_filp) 4056263203eSArnd Bergmann { 4066263203eSArnd Bergmann int ret; 4078e68e2f2SArnd Bergmann int affinity; 4088e68e2f2SArnd Bergmann struct spu_gang *gang; 4098e68e2f2SArnd Bergmann struct spu_context *neighbor; 410765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 4116263203eSArnd Bergmann 4125737edd1SMark Nutter if ((flags & SPU_CREATE_NOSCHED) && 4135737edd1SMark Nutter !capable(CAP_SYS_NICE)) 4141ba44cc9SAl Viro return -EPERM; 4155737edd1SMark Nutter 4165737edd1SMark Nutter if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE)) 4175737edd1SMark Nutter == SPU_CREATE_ISOLATE) 4181ba44cc9SAl Viro return -EINVAL; 4195737edd1SMark Nutter 420bd2e5f82SJeremy Kerr if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader) 4211ba44cc9SAl Viro return -ENODEV; 422bd2e5f82SJeremy Kerr 4238e68e2f2SArnd Bergmann gang = NULL; 4248e68e2f2SArnd Bergmann neighbor = NULL; 4258e68e2f2SArnd Bergmann affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU); 4268e68e2f2SArnd Bergmann if (affinity) { 4278e68e2f2SArnd Bergmann gang = SPUFS_I(inode)->i_gang; 4288e68e2f2SArnd Bergmann if (!gang) 4291ba44cc9SAl Viro return -EINVAL; 4308e68e2f2SArnd Bergmann mutex_lock(&gang->aff_mutex); 4318e68e2f2SArnd Bergmann neighbor = spufs_assert_affinity(flags, gang, aff_filp); 4328e68e2f2SArnd Bergmann if (IS_ERR(neighbor)) { 4338e68e2f2SArnd Bergmann ret = PTR_ERR(neighbor); 4348e68e2f2SArnd Bergmann goto out_aff_unlock; 4358e68e2f2SArnd Bergmann } 4368e68e2f2SArnd Bergmann } 4378e68e2f2SArnd Bergmann 43857ad583fSRussell Currey ret = spufs_mkdir(inode, dentry, flags, mode & 0777); 4396263203eSArnd Bergmann if (ret) 4408e68e2f2SArnd Bergmann goto out_aff_unlock; 4418e68e2f2SArnd Bergmann 44258119068SAndre Detsch if (affinity) { 44375c3cfa8SDavid Howells spufs_set_affinity(flags, SPUFS_I(d_inode(dentry))->i_ctx, 4448e68e2f2SArnd Bergmann neighbor); 44558119068SAndre Detsch if (neighbor) 44658119068SAndre Detsch put_spu_context(neighbor); 44758119068SAndre Detsch } 4486263203eSArnd Bergmann 449765927b2SAl Viro ret = spufs_context_open(&path); 45066ec7b2cSAl Viro if (ret < 0) 4516263203eSArnd Bergmann WARN_ON(spufs_rmdir(inode, dentry)); 4526263203eSArnd Bergmann 4538e68e2f2SArnd Bergmann out_aff_unlock: 4548e68e2f2SArnd Bergmann if (affinity) 4558e68e2f2SArnd Bergmann mutex_unlock(&gang->aff_mutex); 4566263203eSArnd Bergmann return ret; 4576263203eSArnd Bergmann } 4586263203eSArnd Bergmann 4596263203eSArnd Bergmann static int 460c6684b26SAl Viro spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode) 4616263203eSArnd Bergmann { 4626263203eSArnd Bergmann int ret; 4636263203eSArnd Bergmann struct inode *inode; 4646263203eSArnd Bergmann struct spu_gang *gang; 4656263203eSArnd Bergmann 4666263203eSArnd Bergmann ret = -ENOSPC; 4676263203eSArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 4686263203eSArnd Bergmann if (!inode) 4696263203eSArnd Bergmann goto out; 4706263203eSArnd Bergmann 4716263203eSArnd Bergmann ret = 0; 4726263203eSArnd Bergmann if (dir->i_mode & S_ISGID) { 4736263203eSArnd Bergmann inode->i_gid = dir->i_gid; 4746263203eSArnd Bergmann inode->i_mode &= S_ISGID; 4756263203eSArnd Bergmann } 4766263203eSArnd Bergmann gang = alloc_spu_gang(); 4776263203eSArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 4786263203eSArnd Bergmann SPUFS_I(inode)->i_gang = gang; 47954a94fcfSDan Carpenter if (!gang) { 48054a94fcfSDan Carpenter ret = -ENOMEM; 4816263203eSArnd Bergmann goto out_iput; 48254a94fcfSDan Carpenter } 4836263203eSArnd Bergmann 484b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 4856263203eSArnd Bergmann inode->i_fop = &simple_dir_operations; 4866263203eSArnd Bergmann 4876263203eSArnd Bergmann d_instantiate(dentry, inode); 488ba0b996dSJeremy Kerr inc_nlink(dir); 48975c3cfa8SDavid Howells inc_nlink(d_inode(dentry)); 4906263203eSArnd Bergmann return ret; 4916263203eSArnd Bergmann 4926263203eSArnd Bergmann out_iput: 4936263203eSArnd Bergmann iput(inode); 4946263203eSArnd Bergmann out: 4956263203eSArnd Bergmann return ret; 4966263203eSArnd Bergmann } 4976263203eSArnd Bergmann 498765927b2SAl Viro static int spufs_gang_open(struct path *path) 4996263203eSArnd Bergmann { 5006263203eSArnd Bergmann int ret; 5016263203eSArnd Bergmann struct file *filp; 5026263203eSArnd Bergmann 5036b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 504bf349a44SAl Viro if (ret < 0) 505bf349a44SAl Viro return ret; 5066263203eSArnd Bergmann 507bf349a44SAl Viro /* 508bf349a44SAl Viro * get references for dget and mntget, will be released 509bf349a44SAl Viro * in error path of *_open(). 510bf349a44SAl Viro */ 511765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 5126263203eSArnd Bergmann if (IS_ERR(filp)) { 5136263203eSArnd Bergmann put_unused_fd(ret); 514bf349a44SAl Viro return PTR_ERR(filp); 5156263203eSArnd Bergmann } 5166263203eSArnd Bergmann 517877907d3SJeremy Kerr filp->f_op = &simple_dir_operations; 5186263203eSArnd Bergmann fd_install(ret, filp); 5196263203eSArnd Bergmann return ret; 5206263203eSArnd Bergmann } 5216263203eSArnd Bergmann 5226263203eSArnd Bergmann static int spufs_create_gang(struct inode *inode, 5236263203eSArnd Bergmann struct dentry *dentry, 524c6684b26SAl Viro struct vfsmount *mnt, umode_t mode) 5256263203eSArnd Bergmann { 526765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 5276263203eSArnd Bergmann int ret; 5286263203eSArnd Bergmann 52957ad583fSRussell Currey ret = spufs_mkgang(inode, dentry, mode & 0777); 5301ba44cc9SAl Viro if (!ret) { 531765927b2SAl Viro ret = spufs_gang_open(&path); 532877907d3SJeremy Kerr if (ret < 0) { 533877907d3SJeremy Kerr int err = simple_rmdir(inode, dentry); 534877907d3SJeremy Kerr WARN_ON(err); 535877907d3SJeremy Kerr } 5361ba44cc9SAl Viro } 5376263203eSArnd Bergmann return ret; 5386263203eSArnd Bergmann } 5396263203eSArnd Bergmann 5406263203eSArnd Bergmann 541346f4d3cSArnd Bergmann static struct file_system_type spufs_type; 542346f4d3cSArnd Bergmann 5431ba10681SAl Viro long spufs_create(struct path *path, struct dentry *dentry, 544c6684b26SAl Viro unsigned int flags, umode_t mode, struct file *filp) 54567207b96SArnd Bergmann { 54675c3cfa8SDavid Howells struct inode *dir = d_inode(path->dentry); 54767207b96SArnd Bergmann int ret; 54867207b96SArnd Bergmann 5496263203eSArnd Bergmann /* check if we are on spufs */ 5501ba10681SAl Viro if (path->dentry->d_sb->s_type != &spufs_type) 55125b2692aSAl Viro return -EINVAL; 55267207b96SArnd Bergmann 5536263203eSArnd Bergmann /* don't accept undefined flags */ 5549add11daSArnd Bergmann if (flags & (~SPU_CREATE_FLAG_ALL)) 55525b2692aSAl Viro return -EINVAL; 556c9832948Sarnd@arndb.de 5576263203eSArnd Bergmann /* only threads can be underneath a gang */ 55825b2692aSAl Viro if (path->dentry != path->dentry->d_sb->s_root) 55925b2692aSAl Viro if ((flags & SPU_CREATE_GANG) || !SPUFS_I(dir)->i_gang) 56025b2692aSAl Viro return -EINVAL; 5616263203eSArnd Bergmann 562ce3b0f8dSAl Viro mode &= ~current_umask(); 56367207b96SArnd Bergmann 5646263203eSArnd Bergmann if (flags & SPU_CREATE_GANG) 56525b2692aSAl Viro ret = spufs_create_gang(dir, dentry, path->mnt, mode); 5666263203eSArnd Bergmann else 56725b2692aSAl Viro ret = spufs_create_context(dir, dentry, path->mnt, flags, mode, 5684ac91378SJan Blunck filp); 569826be063SChristoph Hellwig if (ret >= 0) 57025b2692aSAl Viro fsnotify_mkdir(dir, dentry); 57167207b96SArnd Bergmann 57267207b96SArnd Bergmann return ret; 57367207b96SArnd Bergmann } 57467207b96SArnd Bergmann 57567207b96SArnd Bergmann /* File system initialization */ 576d2e0981cSDavid Howells struct spufs_fs_context { 577d2e0981cSDavid Howells kuid_t uid; 578d2e0981cSDavid Howells kgid_t gid; 579d2e0981cSDavid Howells umode_t mode; 58067207b96SArnd Bergmann }; 58167207b96SArnd Bergmann 582d2e0981cSDavid Howells enum { 583d2e0981cSDavid Howells Opt_uid, Opt_gid, Opt_mode, Opt_debug, 584d2e0981cSDavid Howells }; 585d2e0981cSDavid Howells 586*d7167b14SAl Viro static const struct fs_parameter_spec spufs_fs_parameters[] = { 587d2e0981cSDavid Howells fsparam_u32 ("gid", Opt_gid), 588d2e0981cSDavid Howells fsparam_u32oct ("mode", Opt_mode), 589d2e0981cSDavid Howells fsparam_u32 ("uid", Opt_uid), 590d2e0981cSDavid Howells fsparam_flag ("debug", Opt_debug), 591d2e0981cSDavid Howells {} 592d2e0981cSDavid Howells }; 593d2e0981cSDavid Howells 594a66ca414SDavid Howells static int spufs_show_options(struct seq_file *m, struct dentry *root) 595a66ca414SDavid Howells { 596a66ca414SDavid Howells struct spufs_sb_info *sbi = spufs_get_sb_info(root->d_sb); 597a66ca414SDavid Howells struct inode *inode = root->d_inode; 598a66ca414SDavid Howells 599a66ca414SDavid Howells if (!uid_eq(inode->i_uid, GLOBAL_ROOT_UID)) 600a66ca414SDavid Howells seq_printf(m, ",uid=%u", 601a66ca414SDavid Howells from_kuid_munged(&init_user_ns, inode->i_uid)); 602a66ca414SDavid Howells if (!gid_eq(inode->i_gid, GLOBAL_ROOT_GID)) 603a66ca414SDavid Howells seq_printf(m, ",gid=%u", 604a66ca414SDavid Howells from_kgid_munged(&init_user_ns, inode->i_gid)); 605a66ca414SDavid Howells if ((inode->i_mode & S_IALLUGO) != 0775) 606a66ca414SDavid Howells seq_printf(m, ",mode=%o", inode->i_mode); 607a66ca414SDavid Howells if (sbi->debug) 608a66ca414SDavid Howells seq_puts(m, ",debug"); 609a66ca414SDavid Howells return 0; 610a66ca414SDavid Howells } 611a66ca414SDavid Howells 612d2e0981cSDavid Howells static int spufs_parse_param(struct fs_context *fc, struct fs_parameter *param) 61367207b96SArnd Bergmann { 614d2e0981cSDavid Howells struct spufs_fs_context *ctx = fc->fs_private; 615d2e0981cSDavid Howells struct spufs_sb_info *sbi = fc->s_fs_info; 616d2e0981cSDavid Howells struct fs_parse_result result; 617d2e0981cSDavid Howells kuid_t uid; 618d2e0981cSDavid Howells kgid_t gid; 619d2e0981cSDavid Howells int opt; 62067207b96SArnd Bergmann 621*d7167b14SAl Viro opt = fs_parse(fc, spufs_fs_parameters, param, &result); 622d2e0981cSDavid Howells if (opt < 0) 623d2e0981cSDavid Howells return opt; 62467207b96SArnd Bergmann 625d2e0981cSDavid Howells switch (opt) { 62667207b96SArnd Bergmann case Opt_uid: 627d2e0981cSDavid Howells uid = make_kuid(current_user_ns(), result.uint_32); 628d2e0981cSDavid Howells if (!uid_valid(uid)) 629d2e0981cSDavid Howells return invalf(fc, "Unknown uid"); 630d2e0981cSDavid Howells ctx->uid = uid; 63167207b96SArnd Bergmann break; 63267207b96SArnd Bergmann case Opt_gid: 633d2e0981cSDavid Howells gid = make_kgid(current_user_ns(), result.uint_32); 634d2e0981cSDavid Howells if (!gid_valid(gid)) 635d2e0981cSDavid Howells return invalf(fc, "Unknown gid"); 636d2e0981cSDavid Howells ctx->gid = gid; 63767207b96SArnd Bergmann break; 638f11f5ee7SJeremy Kerr case Opt_mode: 639d2e0981cSDavid Howells ctx->mode = result.uint_32 & S_IALLUGO; 640f11f5ee7SJeremy Kerr break; 6412c3e4787SJeremy Kerr case Opt_debug: 642d2e0981cSDavid Howells sbi->debug = true; 6432c3e4787SJeremy Kerr break; 644d2e0981cSDavid Howells } 645d2e0981cSDavid Howells 64667207b96SArnd Bergmann return 0; 64767207b96SArnd Bergmann } 64867207b96SArnd Bergmann 649db1384b4SAkinobu Mita static void spufs_exit_isolated_loader(void) 650db1384b4SAkinobu Mita { 6518b0d3121SSebastian Siewior free_pages((unsigned long) isolated_loader, 6528b0d3121SSebastian Siewior get_order(isolated_loader_size)); 653db1384b4SAkinobu Mita } 654db1384b4SAkinobu Mita 6550afacde3Sarnd@arndb.de static void 6560afacde3Sarnd@arndb.de spufs_init_isolated_loader(void) 6570afacde3Sarnd@arndb.de { 6580afacde3Sarnd@arndb.de struct device_node *dn; 6590afacde3Sarnd@arndb.de const char *loader; 6600afacde3Sarnd@arndb.de int size; 6610afacde3Sarnd@arndb.de 6620afacde3Sarnd@arndb.de dn = of_find_node_by_path("/spu-isolation"); 6630afacde3Sarnd@arndb.de if (!dn) 6640afacde3Sarnd@arndb.de return; 6650afacde3Sarnd@arndb.de 666e2eb6392SStephen Rothwell loader = of_get_property(dn, "loader", &size); 6670afacde3Sarnd@arndb.de if (!loader) 6680afacde3Sarnd@arndb.de return; 6690afacde3Sarnd@arndb.de 6708b0d3121SSebastian Siewior /* the loader must be align on a 16 byte boundary */ 6718b0d3121SSebastian Siewior isolated_loader = (char *)__get_free_pages(GFP_KERNEL, get_order(size)); 6720afacde3Sarnd@arndb.de if (!isolated_loader) 6730afacde3Sarnd@arndb.de return; 6740afacde3Sarnd@arndb.de 6758b0d3121SSebastian Siewior isolated_loader_size = size; 6760afacde3Sarnd@arndb.de memcpy(isolated_loader, loader, size); 6770afacde3Sarnd@arndb.de printk(KERN_INFO "spufs: SPU isolation mode enabled\n"); 6780afacde3Sarnd@arndb.de } 6790afacde3Sarnd@arndb.de 680d2e0981cSDavid Howells static int spufs_create_root(struct super_block *sb, struct fs_context *fc) 6818b3d6663SArnd Bergmann { 682d2e0981cSDavid Howells struct spufs_fs_context *ctx = fc->fs_private; 68367207b96SArnd Bergmann struct inode *inode; 68467207b96SArnd Bergmann 6858f18a158SArnd Bergmann if (!spu_management_ops) 686d2e0981cSDavid Howells return -ENODEV; 6878f18a158SArnd Bergmann 688d2e0981cSDavid Howells inode = spufs_new_inode(sb, S_IFDIR | ctx->mode); 68967207b96SArnd Bergmann if (!inode) 690d2e0981cSDavid Howells return -ENOMEM; 69167207b96SArnd Bergmann 692d2e0981cSDavid Howells inode->i_uid = ctx->uid; 693d2e0981cSDavid Howells inode->i_gid = ctx->gid; 694b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 69567207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 69667207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 697e2ed6e4dSJeremy Kerr inc_nlink(inode); 69867207b96SArnd Bergmann 69948fde701SAl Viro sb->s_root = d_make_root(inode); 70067207b96SArnd Bergmann if (!sb->s_root) 701d2e0981cSDavid Howells return -ENOMEM; 70267207b96SArnd Bergmann return 0; 70367207b96SArnd Bergmann } 70467207b96SArnd Bergmann 705d2e0981cSDavid Howells static const struct super_operations spufs_ops = { 70667207b96SArnd Bergmann .alloc_inode = spufs_alloc_inode, 7076d0e0d0bSAl Viro .free_inode = spufs_free_inode, 70867207b96SArnd Bergmann .statfs = simple_statfs, 7090f3f63a4SAl Viro .evict_inode = spufs_evict_inode, 710a66ca414SDavid Howells .show_options = spufs_show_options, 71167207b96SArnd Bergmann }; 71267207b96SArnd Bergmann 713d2e0981cSDavid Howells static int spufs_fill_super(struct super_block *sb, struct fs_context *fc) 714d2e0981cSDavid Howells { 71567207b96SArnd Bergmann sb->s_maxbytes = MAX_LFS_FILESIZE; 71609cbfeafSKirill A. Shutemov sb->s_blocksize = PAGE_SIZE; 71709cbfeafSKirill A. Shutemov sb->s_blocksize_bits = PAGE_SHIFT; 71867207b96SArnd Bergmann sb->s_magic = SPUFS_MAGIC; 719d2e0981cSDavid Howells sb->s_op = &spufs_ops; 72067207b96SArnd Bergmann 721d2e0981cSDavid Howells return spufs_create_root(sb, fc); 72267207b96SArnd Bergmann } 72367207b96SArnd Bergmann 724d2e0981cSDavid Howells static int spufs_get_tree(struct fs_context *fc) 72567207b96SArnd Bergmann { 726d2e0981cSDavid Howells return get_tree_single(fc, spufs_fill_super); 727d2e0981cSDavid Howells } 728d2e0981cSDavid Howells 729d2e0981cSDavid Howells static void spufs_free_fc(struct fs_context *fc) 730d2e0981cSDavid Howells { 731d2e0981cSDavid Howells kfree(fc->s_fs_info); 732d2e0981cSDavid Howells } 733d2e0981cSDavid Howells 734d2e0981cSDavid Howells static const struct fs_context_operations spufs_context_ops = { 735d2e0981cSDavid Howells .free = spufs_free_fc, 736d2e0981cSDavid Howells .parse_param = spufs_parse_param, 737d2e0981cSDavid Howells .get_tree = spufs_get_tree, 738d2e0981cSDavid Howells }; 739d2e0981cSDavid Howells 740d2e0981cSDavid Howells static int spufs_init_fs_context(struct fs_context *fc) 741d2e0981cSDavid Howells { 742d2e0981cSDavid Howells struct spufs_fs_context *ctx; 743d2e0981cSDavid Howells struct spufs_sb_info *sbi; 744d2e0981cSDavid Howells 745d2e0981cSDavid Howells ctx = kzalloc(sizeof(struct spufs_fs_context), GFP_KERNEL); 746d2e0981cSDavid Howells if (!ctx) 747d2e0981cSDavid Howells goto nomem; 748d2e0981cSDavid Howells 749d2e0981cSDavid Howells sbi = kzalloc(sizeof(struct spufs_sb_info), GFP_KERNEL); 750d2e0981cSDavid Howells if (!sbi) 751d2e0981cSDavid Howells goto nomem_ctx; 752d2e0981cSDavid Howells 753d2e0981cSDavid Howells ctx->uid = current_uid(); 754d2e0981cSDavid Howells ctx->gid = current_gid(); 755d2e0981cSDavid Howells ctx->mode = 0755; 756d2e0981cSDavid Howells 7572272905aSEmmanuel Nicolet fc->fs_private = ctx; 758d2e0981cSDavid Howells fc->s_fs_info = sbi; 759d2e0981cSDavid Howells fc->ops = &spufs_context_ops; 760d2e0981cSDavid Howells return 0; 761d2e0981cSDavid Howells 762d2e0981cSDavid Howells nomem_ctx: 763d2e0981cSDavid Howells kfree(ctx); 764d2e0981cSDavid Howells nomem: 765d2e0981cSDavid Howells return -ENOMEM; 76667207b96SArnd Bergmann } 76767207b96SArnd Bergmann 76867207b96SArnd Bergmann static struct file_system_type spufs_type = { 76967207b96SArnd Bergmann .owner = THIS_MODULE, 77067207b96SArnd Bergmann .name = "spufs", 771d2e0981cSDavid Howells .init_fs_context = spufs_init_fs_context, 772*d7167b14SAl Viro .parameters = spufs_fs_parameters, 77367207b96SArnd Bergmann .kill_sb = kill_litter_super, 77467207b96SArnd Bergmann }; 7757f78e035SEric W. Biederman MODULE_ALIAS_FS("spufs"); 77667207b96SArnd Bergmann 777e78b47a5SArnd Bergmann static int __init spufs_init(void) 77867207b96SArnd Bergmann { 77967207b96SArnd Bergmann int ret; 780bf1ab978SDwayne Grant McConnell 781ccf17e9dSJeremy Kerr ret = -ENODEV; 782ccf17e9dSJeremy Kerr if (!spu_management_ops) 783ccf17e9dSJeremy Kerr goto out; 784ccf17e9dSJeremy Kerr 78567207b96SArnd Bergmann ret = -ENOMEM; 78667207b96SArnd Bergmann spufs_inode_cache = kmem_cache_create("spufs_inode_cache", 78767207b96SArnd Bergmann sizeof(struct spufs_inode_info), 0, 7885d097056SVladimir Davydov SLAB_HWCACHE_ALIGN|SLAB_ACCOUNT, spufs_init_once); 78967207b96SArnd Bergmann 79067207b96SArnd Bergmann if (!spufs_inode_cache) 79167207b96SArnd Bergmann goto out; 792c99c1994SAkinobu Mita ret = spu_sched_init(); 79367207b96SArnd Bergmann if (ret) 79467207b96SArnd Bergmann goto out_cache; 79567207b96SArnd Bergmann ret = register_spu_syscalls(&spufs_calls); 79667207b96SArnd Bergmann if (ret) 797640045a1SAl Viro goto out_sched; 798640045a1SAl Viro ret = register_filesystem(&spufs_type); 799640045a1SAl Viro if (ret) 800640045a1SAl Viro goto out_syscalls; 8010afacde3Sarnd@arndb.de 8020afacde3Sarnd@arndb.de spufs_init_isolated_loader(); 803bf1ab978SDwayne Grant McConnell 80467207b96SArnd Bergmann return 0; 805c99c1994SAkinobu Mita 806640045a1SAl Viro out_syscalls: 807640045a1SAl Viro unregister_spu_syscalls(&spufs_calls); 808c99c1994SAkinobu Mita out_sched: 809c99c1994SAkinobu Mita spu_sched_exit(); 81067207b96SArnd Bergmann out_cache: 81167207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 81267207b96SArnd Bergmann out: 81367207b96SArnd Bergmann return ret; 81467207b96SArnd Bergmann } 81567207b96SArnd Bergmann module_init(spufs_init); 81667207b96SArnd Bergmann 817e78b47a5SArnd Bergmann static void __exit spufs_exit(void) 81867207b96SArnd Bergmann { 8198b3d6663SArnd Bergmann spu_sched_exit(); 820db1384b4SAkinobu Mita spufs_exit_isolated_loader(); 82167207b96SArnd Bergmann unregister_spu_syscalls(&spufs_calls); 82267207b96SArnd Bergmann unregister_filesystem(&spufs_type); 82367207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 82467207b96SArnd Bergmann } 82567207b96SArnd Bergmann module_exit(spufs_exit); 82667207b96SArnd Bergmann 82767207b96SArnd Bergmann MODULE_LICENSE("GPL"); 82867207b96SArnd Bergmann MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); 82967207b96SArnd Bergmann 830