14ac91378SJan Blunck 267207b96SArnd Bergmann /* 367207b96SArnd Bergmann * SPU file system 467207b96SArnd Bergmann * 567207b96SArnd Bergmann * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 667207b96SArnd Bergmann * 767207b96SArnd Bergmann * Author: Arnd Bergmann <arndb@de.ibm.com> 867207b96SArnd Bergmann * 967207b96SArnd Bergmann * This program is free software; you can redistribute it and/or modify 1067207b96SArnd Bergmann * it under the terms of the GNU General Public License as published by 1167207b96SArnd Bergmann * the Free Software Foundation; either version 2, or (at your option) 1267207b96SArnd Bergmann * any later version. 1367207b96SArnd Bergmann * 1467207b96SArnd Bergmann * This program is distributed in the hope that it will be useful, 1567207b96SArnd Bergmann * but WITHOUT ANY WARRANTY; without even the implied warranty of 1667207b96SArnd Bergmann * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1767207b96SArnd Bergmann * GNU General Public License for more details. 1867207b96SArnd Bergmann * 1967207b96SArnd Bergmann * You should have received a copy of the GNU General Public License 2067207b96SArnd Bergmann * along with this program; if not, write to the Free Software 2167207b96SArnd Bergmann * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 2267207b96SArnd Bergmann */ 2367207b96SArnd Bergmann 2467207b96SArnd Bergmann #include <linux/file.h> 2567207b96SArnd Bergmann #include <linux/fs.h> 26826be063SChristoph Hellwig #include <linux/fsnotify.h> 2767207b96SArnd Bergmann #include <linux/backing-dev.h> 2867207b96SArnd Bergmann #include <linux/init.h> 2967207b96SArnd Bergmann #include <linux/ioctl.h> 3067207b96SArnd Bergmann #include <linux/module.h> 31346f4d3cSArnd Bergmann #include <linux/mount.h> 3267207b96SArnd Bergmann #include <linux/namei.h> 3367207b96SArnd Bergmann #include <linux/pagemap.h> 3467207b96SArnd Bergmann #include <linux/poll.h> 3567207b96SArnd Bergmann #include <linux/slab.h> 3667207b96SArnd Bergmann #include <linux/parser.h> 3767207b96SArnd Bergmann 380afacde3Sarnd@arndb.de #include <asm/prom.h> 3967207b96SArnd Bergmann #include <asm/spu.h> 40ccf17e9dSJeremy Kerr #include <asm/spu_priv1.h> 4167207b96SArnd Bergmann #include <asm/uaccess.h> 4267207b96SArnd Bergmann 4367207b96SArnd Bergmann #include "spufs.h" 4467207b96SArnd Bergmann 452c3e4787SJeremy Kerr struct spufs_sb_info { 462c3e4787SJeremy Kerr int debug; 472c3e4787SJeremy Kerr }; 482c3e4787SJeremy Kerr 49e18b890bSChristoph Lameter static struct kmem_cache *spufs_inode_cache; 50c6730ed4SJeremy Kerr char *isolated_loader; 518b0d3121SSebastian Siewior static int isolated_loader_size; 5267207b96SArnd Bergmann 532c3e4787SJeremy Kerr static struct spufs_sb_info *spufs_get_sb_info(struct super_block *sb) 542c3e4787SJeremy Kerr { 552c3e4787SJeremy Kerr return sb->s_fs_info; 562c3e4787SJeremy Kerr } 572c3e4787SJeremy Kerr 5867207b96SArnd Bergmann static struct inode * 5967207b96SArnd Bergmann spufs_alloc_inode(struct super_block *sb) 6067207b96SArnd Bergmann { 6167207b96SArnd Bergmann struct spufs_inode_info *ei; 6267207b96SArnd Bergmann 63e94b1766SChristoph Lameter ei = kmem_cache_alloc(spufs_inode_cache, GFP_KERNEL); 6467207b96SArnd Bergmann if (!ei) 6567207b96SArnd Bergmann return NULL; 666263203eSArnd Bergmann 676263203eSArnd Bergmann ei->i_gang = NULL; 686263203eSArnd Bergmann ei->i_ctx = NULL; 6943c2bbd9SChristoph Hellwig ei->i_openers = 0; 706263203eSArnd Bergmann 7167207b96SArnd Bergmann return &ei->vfs_inode; 7267207b96SArnd Bergmann } 7367207b96SArnd Bergmann 74fa0d7e3dSNick Piggin static void spufs_i_callback(struct rcu_head *head) 7567207b96SArnd Bergmann { 76fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 7767207b96SArnd Bergmann kmem_cache_free(spufs_inode_cache, SPUFS_I(inode)); 7867207b96SArnd Bergmann } 7967207b96SArnd Bergmann 80fa0d7e3dSNick Piggin static void spufs_destroy_inode(struct inode *inode) 81fa0d7e3dSNick Piggin { 82fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, spufs_i_callback); 83fa0d7e3dSNick Piggin } 84fa0d7e3dSNick Piggin 8567207b96SArnd Bergmann static void 8651cc5068SAlexey Dobriyan spufs_init_once(void *p) 8767207b96SArnd Bergmann { 8867207b96SArnd Bergmann struct spufs_inode_info *ei = p; 8967207b96SArnd Bergmann 9067207b96SArnd Bergmann inode_init_once(&ei->vfs_inode); 9167207b96SArnd Bergmann } 9267207b96SArnd Bergmann 9367207b96SArnd Bergmann static struct inode * 94c6684b26SAl Viro spufs_new_inode(struct super_block *sb, umode_t mode) 9567207b96SArnd Bergmann { 9667207b96SArnd Bergmann struct inode *inode; 9767207b96SArnd Bergmann 9867207b96SArnd Bergmann inode = new_inode(sb); 9967207b96SArnd Bergmann if (!inode) 10067207b96SArnd Bergmann goto out; 10167207b96SArnd Bergmann 1026747e832SMichael Ellerman inode->i_ino = get_next_ino(); 10367207b96SArnd Bergmann inode->i_mode = mode; 1041330deb0SDavid Howells inode->i_uid = current_fsuid(); 1051330deb0SDavid Howells inode->i_gid = current_fsgid(); 10667207b96SArnd Bergmann inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 10767207b96SArnd Bergmann out: 10867207b96SArnd Bergmann return inode; 10967207b96SArnd Bergmann } 11067207b96SArnd Bergmann 11167207b96SArnd Bergmann static int 11267207b96SArnd Bergmann spufs_setattr(struct dentry *dentry, struct iattr *attr) 11367207b96SArnd Bergmann { 114*75c3cfa8SDavid Howells struct inode *inode = d_inode(dentry); 11567207b96SArnd Bergmann 11667207b96SArnd Bergmann if ((attr->ia_valid & ATTR_SIZE) && 11767207b96SArnd Bergmann (attr->ia_size != inode->i_size)) 11867207b96SArnd Bergmann return -EINVAL; 1191025774cSChristoph Hellwig setattr_copy(inode, attr); 1201025774cSChristoph Hellwig mark_inode_dirty(inode); 1211025774cSChristoph Hellwig return 0; 12267207b96SArnd Bergmann } 12367207b96SArnd Bergmann 12467207b96SArnd Bergmann 12567207b96SArnd Bergmann static int 12667207b96SArnd Bergmann spufs_new_file(struct super_block *sb, struct dentry *dentry, 127c6684b26SAl Viro const struct file_operations *fops, umode_t mode, 12823d893f5SJeremy Kerr size_t size, struct spu_context *ctx) 12967207b96SArnd Bergmann { 1306e1d5dccSAlexey Dobriyan static const struct inode_operations spufs_file_iops = { 13167207b96SArnd Bergmann .setattr = spufs_setattr, 13267207b96SArnd Bergmann }; 13367207b96SArnd Bergmann struct inode *inode; 13467207b96SArnd Bergmann int ret; 13567207b96SArnd Bergmann 13667207b96SArnd Bergmann ret = -ENOSPC; 13767207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFREG | mode); 13867207b96SArnd Bergmann if (!inode) 13967207b96SArnd Bergmann goto out; 14067207b96SArnd Bergmann 14167207b96SArnd Bergmann ret = 0; 14267207b96SArnd Bergmann inode->i_op = &spufs_file_iops; 14367207b96SArnd Bergmann inode->i_fop = fops; 14423d893f5SJeremy Kerr inode->i_size = size; 1458e18e294STheodore Ts'o inode->i_private = SPUFS_I(inode)->i_ctx = get_spu_context(ctx); 14667207b96SArnd Bergmann d_add(dentry, inode); 14767207b96SArnd Bergmann out: 14867207b96SArnd Bergmann return ret; 14967207b96SArnd Bergmann } 15067207b96SArnd Bergmann 15167207b96SArnd Bergmann static void 1520f3f63a4SAl Viro spufs_evict_inode(struct inode *inode) 15367207b96SArnd Bergmann { 1546263203eSArnd Bergmann struct spufs_inode_info *ei = SPUFS_I(inode); 155dbd5768fSJan Kara clear_inode(inode); 1566263203eSArnd Bergmann if (ei->i_ctx) 1576263203eSArnd Bergmann put_spu_context(ei->i_ctx); 1586263203eSArnd Bergmann if (ei->i_gang) 1596263203eSArnd Bergmann put_spu_gang(ei->i_gang); 16067207b96SArnd Bergmann } 16167207b96SArnd Bergmann 1623f51dd91SArnd Bergmann static void spufs_prune_dir(struct dentry *dir) 1633f51dd91SArnd Bergmann { 1643f51dd91SArnd Bergmann struct dentry *dentry, *tmp; 1656263203eSArnd Bergmann 166*75c3cfa8SDavid Howells mutex_lock(&d_inode(dir)->i_mutex); 167946e51f2SAl Viro list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) { 1683f51dd91SArnd Bergmann spin_lock(&dentry->d_lock); 169*75c3cfa8SDavid Howells if (!(d_unhashed(dentry)) && d_really_is_positive(dentry)) { 170dc0474beSNick Piggin dget_dlock(dentry); 1713f51dd91SArnd Bergmann __d_drop(dentry); 1723f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 173*75c3cfa8SDavid Howells simple_unlink(d_inode(dir), dentry); 174b5c84bf6SNick Piggin /* XXX: what was dcache_lock protecting here? Other 175da502956SNick Piggin * filesystems (IB, configfs) release dcache_lock 176da502956SNick Piggin * before unlink */ 1773f51dd91SArnd Bergmann dput(dentry); 1783f51dd91SArnd Bergmann } else { 1793f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1803f51dd91SArnd Bergmann } 1813f51dd91SArnd Bergmann } 1823f51dd91SArnd Bergmann shrink_dcache_parent(dir); 183*75c3cfa8SDavid Howells mutex_unlock(&d_inode(dir)->i_mutex); 1843f51dd91SArnd Bergmann } 1853f51dd91SArnd Bergmann 1866263203eSArnd Bergmann /* Caller must hold parent->i_mutex */ 1876263203eSArnd Bergmann static int spufs_rmdir(struct inode *parent, struct dentry *dir) 1883f51dd91SArnd Bergmann { 1893f51dd91SArnd Bergmann /* remove all entries */ 19067cba9fdSAl Viro int res; 1916263203eSArnd Bergmann spufs_prune_dir(dir); 192c443acabSJeremy Kerr d_drop(dir); 19367cba9fdSAl Viro res = simple_rmdir(parent, dir); 19467cba9fdSAl Viro /* We have to give up the mm_struct */ 195*75c3cfa8SDavid Howells spu_forget(SPUFS_I(d_inode(dir))->i_ctx); 19667cba9fdSAl Viro return res; 1973f51dd91SArnd Bergmann } 1983f51dd91SArnd Bergmann 19974254647SJeremy Kerr static int spufs_fill_dir(struct dentry *dir, 200c6684b26SAl Viro const struct spufs_tree_descr *files, umode_t mode, 20174254647SJeremy Kerr struct spu_context *ctx) 20267207b96SArnd Bergmann { 20367207b96SArnd Bergmann while (files->name && files->name[0]) { 2042248b87eSAl Viro int ret; 2052248b87eSAl Viro struct dentry *dentry = d_alloc_name(dir, files->name); 20667207b96SArnd Bergmann if (!dentry) 2072248b87eSAl Viro return -ENOMEM; 20867207b96SArnd Bergmann ret = spufs_new_file(dir->d_sb, dentry, files->ops, 20923d893f5SJeremy Kerr files->mode & mode, files->size, ctx); 21067207b96SArnd Bergmann if (ret) 2112248b87eSAl Viro return ret; 21267207b96SArnd Bergmann files++; 21367207b96SArnd Bergmann } 21467207b96SArnd Bergmann return 0; 21567207b96SArnd Bergmann } 21667207b96SArnd Bergmann 21767207b96SArnd Bergmann static int spufs_dir_close(struct inode *inode, struct file *file) 21867207b96SArnd Bergmann { 2190309f02dSMichael Ellerman struct spu_context *ctx; 2206263203eSArnd Bergmann struct inode *parent; 2216263203eSArnd Bergmann struct dentry *dir; 22267207b96SArnd Bergmann int ret; 22367207b96SArnd Bergmann 224b4d1ab58SJosef Sipek dir = file->f_path.dentry; 225*75c3cfa8SDavid Howells parent = d_inode(dir->d_parent); 226*75c3cfa8SDavid Howells ctx = SPUFS_I(d_inode(dir))->i_ctx; 227c8ca0633SArnd Bergmann 22802539d71SChristoph Hellwig mutex_lock_nested(&parent->i_mutex, I_MUTEX_PARENT); 2296263203eSArnd Bergmann ret = spufs_rmdir(parent, dir); 2306263203eSArnd Bergmann mutex_unlock(&parent->i_mutex); 23167207b96SArnd Bergmann WARN_ON(ret); 232c8ca0633SArnd Bergmann 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, 2415f99f4e7SAl Viro .iterate = dcache_readdir, 2421b061d92SChristoph Hellwig .fsync = noop_fsync, 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, 248c6684b26SAl Viro umode_t mode) 24967207b96SArnd Bergmann { 25067207b96SArnd Bergmann int ret; 25167207b96SArnd Bergmann struct inode *inode; 25267207b96SArnd Bergmann struct spu_context *ctx; 25367207b96SArnd Bergmann 25467207b96SArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 25567207b96SArnd Bergmann if (!inode) 2562248b87eSAl Viro return -ENOSPC; 25767207b96SArnd Bergmann 25867207b96SArnd Bergmann if (dir->i_mode & S_ISGID) { 25967207b96SArnd Bergmann inode->i_gid = dir->i_gid; 26067207b96SArnd Bergmann inode->i_mode &= S_ISGID; 26167207b96SArnd Bergmann } 2626263203eSArnd Bergmann ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */ 26367207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = ctx; 2642248b87eSAl Viro if (!ctx) { 2652248b87eSAl Viro iput(inode); 2662248b87eSAl Viro return -ENOSPC; 2672248b87eSAl Viro } 26867207b96SArnd Bergmann 2699add11daSArnd Bergmann ctx->flags = flags; 270b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 27167207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 2722248b87eSAl Viro 2732248b87eSAl Viro mutex_lock(&inode->i_mutex); 2742248b87eSAl Viro 2752248b87eSAl Viro dget(dentry); 2762248b87eSAl Viro inc_nlink(dir); 2772248b87eSAl Viro inc_nlink(inode); 2782248b87eSAl Viro 2792248b87eSAl Viro d_instantiate(dentry, inode); 2802248b87eSAl Viro 2815737edd1SMark Nutter if (flags & SPU_CREATE_NOSCHED) 2825737edd1SMark Nutter ret = spufs_fill_dir(dentry, spufs_dir_nosched_contents, 2835737edd1SMark Nutter mode, ctx); 2845737edd1SMark Nutter else 28567207b96SArnd Bergmann ret = spufs_fill_dir(dentry, spufs_dir_contents, mode, ctx); 2865737edd1SMark Nutter 2872248b87eSAl Viro if (!ret && spufs_get_sb_info(dir->i_sb)->debug) 2882c3e4787SJeremy Kerr ret = spufs_fill_dir(dentry, spufs_dir_debug_contents, 2892c3e4787SJeremy Kerr mode, ctx); 2902c3e4787SJeremy Kerr 2912c3e4787SJeremy Kerr if (ret) 2922248b87eSAl Viro spufs_rmdir(dir, dentry); 2932c3e4787SJeremy Kerr 2942248b87eSAl Viro mutex_unlock(&inode->i_mutex); 29567207b96SArnd Bergmann 29667207b96SArnd Bergmann return ret; 29767207b96SArnd Bergmann } 29867207b96SArnd Bergmann 299765927b2SAl Viro static int spufs_context_open(struct path *path) 300346f4d3cSArnd Bergmann { 301346f4d3cSArnd Bergmann int ret; 302346f4d3cSArnd Bergmann struct file *filp; 303346f4d3cSArnd Bergmann 3046b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 305bf349a44SAl Viro if (ret < 0) 306bf349a44SAl Viro return ret; 307346f4d3cSArnd Bergmann 308765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 309346f4d3cSArnd Bergmann if (IS_ERR(filp)) { 310346f4d3cSArnd Bergmann put_unused_fd(ret); 311bf349a44SAl Viro return PTR_ERR(filp); 312346f4d3cSArnd Bergmann } 313346f4d3cSArnd Bergmann 314346f4d3cSArnd Bergmann filp->f_op = &spufs_context_fops; 315346f4d3cSArnd Bergmann fd_install(ret, filp); 316346f4d3cSArnd Bergmann return ret; 317346f4d3cSArnd Bergmann } 318346f4d3cSArnd Bergmann 3198e68e2f2SArnd Bergmann static struct spu_context * 3208e68e2f2SArnd Bergmann spufs_assert_affinity(unsigned int flags, struct spu_gang *gang, 3218e68e2f2SArnd Bergmann struct file *filp) 3228e68e2f2SArnd Bergmann { 32358119068SAndre Detsch struct spu_context *tmp, *neighbor, *err; 3248e68e2f2SArnd Bergmann int count, node; 3258e68e2f2SArnd Bergmann int aff_supp; 3268e68e2f2SArnd Bergmann 3278e68e2f2SArnd Bergmann aff_supp = !list_empty(&(list_entry(cbe_spu_info[0].spus.next, 3288e68e2f2SArnd Bergmann struct spu, cbe_list))->aff_list); 3298e68e2f2SArnd Bergmann 3308e68e2f2SArnd Bergmann if (!aff_supp) 3318e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3328e68e2f2SArnd Bergmann 3338e68e2f2SArnd Bergmann if (flags & SPU_CREATE_GANG) 3348e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3358e68e2f2SArnd Bergmann 3368e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM && 3378e68e2f2SArnd Bergmann gang->aff_ref_ctx && 3388e68e2f2SArnd Bergmann gang->aff_ref_ctx->flags & SPU_CREATE_AFFINITY_MEM) 3398e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3408e68e2f2SArnd Bergmann 3418e68e2f2SArnd Bergmann if (gang->aff_flags & AFF_MERGED) 3428e68e2f2SArnd Bergmann return ERR_PTR(-EBUSY); 3438e68e2f2SArnd Bergmann 3448e68e2f2SArnd Bergmann neighbor = NULL; 3458e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3468e68e2f2SArnd Bergmann if (!filp || filp->f_op != &spufs_context_fops) 3478e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3488e68e2f2SArnd Bergmann 3498e68e2f2SArnd Bergmann neighbor = get_spu_context( 350496ad9aaSAl Viro SPUFS_I(file_inode(filp))->i_ctx); 3518e68e2f2SArnd Bergmann 3528e68e2f2SArnd Bergmann if (!list_empty(&neighbor->aff_list) && !(neighbor->aff_head) && 3538e68e2f2SArnd Bergmann !list_is_last(&neighbor->aff_list, &gang->aff_list_head) && 3548e68e2f2SArnd Bergmann !list_entry(neighbor->aff_list.next, struct spu_context, 35558119068SAndre Detsch aff_list)->aff_head) { 35658119068SAndre Detsch err = ERR_PTR(-EEXIST); 35758119068SAndre Detsch goto out_put_neighbor; 35858119068SAndre Detsch } 3598e68e2f2SArnd Bergmann 36058119068SAndre Detsch if (gang != neighbor->gang) { 36158119068SAndre Detsch err = ERR_PTR(-EINVAL); 36258119068SAndre Detsch goto out_put_neighbor; 36358119068SAndre Detsch } 3648e68e2f2SArnd Bergmann 3658e68e2f2SArnd Bergmann count = 1; 3668e68e2f2SArnd Bergmann list_for_each_entry(tmp, &gang->aff_list_head, aff_list) 3678e68e2f2SArnd Bergmann count++; 3688e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) 3698e68e2f2SArnd Bergmann count++; 3708e68e2f2SArnd Bergmann 3718e68e2f2SArnd Bergmann for (node = 0; node < MAX_NUMNODES; node++) { 3728e68e2f2SArnd Bergmann if ((cbe_spu_info[node].n_spus - atomic_read( 3738e68e2f2SArnd Bergmann &cbe_spu_info[node].reserved_spus)) >= count) 3748e68e2f2SArnd Bergmann break; 3758e68e2f2SArnd Bergmann } 3768e68e2f2SArnd Bergmann 37758119068SAndre Detsch if (node == MAX_NUMNODES) { 37858119068SAndre Detsch err = ERR_PTR(-EEXIST); 37958119068SAndre Detsch goto out_put_neighbor; 38058119068SAndre Detsch } 3818e68e2f2SArnd Bergmann } 3828e68e2f2SArnd Bergmann 3838e68e2f2SArnd Bergmann return neighbor; 38458119068SAndre Detsch 38558119068SAndre Detsch out_put_neighbor: 38658119068SAndre Detsch put_spu_context(neighbor); 38758119068SAndre Detsch return err; 3888e68e2f2SArnd Bergmann } 3898e68e2f2SArnd Bergmann 3908e68e2f2SArnd Bergmann static void 3918e68e2f2SArnd Bergmann spufs_set_affinity(unsigned int flags, struct spu_context *ctx, 3928e68e2f2SArnd Bergmann struct spu_context *neighbor) 3938e68e2f2SArnd Bergmann { 3948e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM) 3958e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 3968e68e2f2SArnd Bergmann 3978e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3988e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) { 3998e68e2f2SArnd Bergmann list_add_tail(&neighbor->aff_list, 4008e68e2f2SArnd Bergmann &ctx->gang->aff_list_head); 4018e68e2f2SArnd Bergmann neighbor->aff_head = 1; 4028e68e2f2SArnd Bergmann } 4038e68e2f2SArnd Bergmann 4048e68e2f2SArnd Bergmann if (list_is_last(&neighbor->aff_list, &ctx->gang->aff_list_head) 4058e68e2f2SArnd Bergmann || list_entry(neighbor->aff_list.next, struct spu_context, 4068e68e2f2SArnd Bergmann aff_list)->aff_head) { 4078e68e2f2SArnd Bergmann list_add(&ctx->aff_list, &neighbor->aff_list); 4088e68e2f2SArnd Bergmann } else { 4098e68e2f2SArnd Bergmann list_add_tail(&ctx->aff_list, &neighbor->aff_list); 4108e68e2f2SArnd Bergmann if (neighbor->aff_head) { 4118e68e2f2SArnd Bergmann neighbor->aff_head = 0; 4128e68e2f2SArnd Bergmann ctx->aff_head = 1; 4138e68e2f2SArnd Bergmann } 4148e68e2f2SArnd Bergmann } 4158e68e2f2SArnd Bergmann 4168e68e2f2SArnd Bergmann if (!ctx->gang->aff_ref_ctx) 4178e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 4188e68e2f2SArnd Bergmann } 4198e68e2f2SArnd Bergmann } 4208e68e2f2SArnd Bergmann 4218e68e2f2SArnd Bergmann static int 4228e68e2f2SArnd Bergmann spufs_create_context(struct inode *inode, struct dentry *dentry, 423c6684b26SAl Viro struct vfsmount *mnt, int flags, umode_t mode, 4248e68e2f2SArnd Bergmann struct file *aff_filp) 4256263203eSArnd Bergmann { 4266263203eSArnd Bergmann int ret; 4278e68e2f2SArnd Bergmann int affinity; 4288e68e2f2SArnd Bergmann struct spu_gang *gang; 4298e68e2f2SArnd Bergmann struct spu_context *neighbor; 430765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 4316263203eSArnd Bergmann 4325737edd1SMark Nutter if ((flags & SPU_CREATE_NOSCHED) && 4335737edd1SMark Nutter !capable(CAP_SYS_NICE)) 4341ba44cc9SAl Viro return -EPERM; 4355737edd1SMark Nutter 4365737edd1SMark Nutter if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE)) 4375737edd1SMark Nutter == SPU_CREATE_ISOLATE) 4381ba44cc9SAl Viro return -EINVAL; 4395737edd1SMark Nutter 440bd2e5f82SJeremy Kerr if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader) 4411ba44cc9SAl Viro return -ENODEV; 442bd2e5f82SJeremy Kerr 4438e68e2f2SArnd Bergmann gang = NULL; 4448e68e2f2SArnd Bergmann neighbor = NULL; 4458e68e2f2SArnd Bergmann affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU); 4468e68e2f2SArnd Bergmann if (affinity) { 4478e68e2f2SArnd Bergmann gang = SPUFS_I(inode)->i_gang; 4488e68e2f2SArnd Bergmann if (!gang) 4491ba44cc9SAl Viro return -EINVAL; 4508e68e2f2SArnd Bergmann mutex_lock(&gang->aff_mutex); 4518e68e2f2SArnd Bergmann neighbor = spufs_assert_affinity(flags, gang, aff_filp); 4528e68e2f2SArnd Bergmann if (IS_ERR(neighbor)) { 4538e68e2f2SArnd Bergmann ret = PTR_ERR(neighbor); 4548e68e2f2SArnd Bergmann goto out_aff_unlock; 4558e68e2f2SArnd Bergmann } 4568e68e2f2SArnd Bergmann } 4578e68e2f2SArnd Bergmann 4586263203eSArnd Bergmann ret = spufs_mkdir(inode, dentry, flags, mode & S_IRWXUGO); 4596263203eSArnd Bergmann if (ret) 4608e68e2f2SArnd Bergmann goto out_aff_unlock; 4618e68e2f2SArnd Bergmann 46258119068SAndre Detsch if (affinity) { 463*75c3cfa8SDavid Howells spufs_set_affinity(flags, SPUFS_I(d_inode(dentry))->i_ctx, 4648e68e2f2SArnd Bergmann neighbor); 46558119068SAndre Detsch if (neighbor) 46658119068SAndre Detsch put_spu_context(neighbor); 46758119068SAndre Detsch } 4686263203eSArnd Bergmann 469765927b2SAl Viro ret = spufs_context_open(&path); 47066ec7b2cSAl Viro if (ret < 0) 4716263203eSArnd Bergmann WARN_ON(spufs_rmdir(inode, dentry)); 4726263203eSArnd Bergmann 4738e68e2f2SArnd Bergmann out_aff_unlock: 4748e68e2f2SArnd Bergmann if (affinity) 4758e68e2f2SArnd Bergmann mutex_unlock(&gang->aff_mutex); 4766263203eSArnd Bergmann return ret; 4776263203eSArnd Bergmann } 4786263203eSArnd Bergmann 4796263203eSArnd Bergmann static int 480c6684b26SAl Viro spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode) 4816263203eSArnd Bergmann { 4826263203eSArnd Bergmann int ret; 4836263203eSArnd Bergmann struct inode *inode; 4846263203eSArnd Bergmann struct spu_gang *gang; 4856263203eSArnd Bergmann 4866263203eSArnd Bergmann ret = -ENOSPC; 4876263203eSArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 4886263203eSArnd Bergmann if (!inode) 4896263203eSArnd Bergmann goto out; 4906263203eSArnd Bergmann 4916263203eSArnd Bergmann ret = 0; 4926263203eSArnd Bergmann if (dir->i_mode & S_ISGID) { 4936263203eSArnd Bergmann inode->i_gid = dir->i_gid; 4946263203eSArnd Bergmann inode->i_mode &= S_ISGID; 4956263203eSArnd Bergmann } 4966263203eSArnd Bergmann gang = alloc_spu_gang(); 4976263203eSArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 4986263203eSArnd Bergmann SPUFS_I(inode)->i_gang = gang; 4996263203eSArnd Bergmann if (!gang) 5006263203eSArnd Bergmann goto out_iput; 5016263203eSArnd Bergmann 502b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 5036263203eSArnd Bergmann inode->i_fop = &simple_dir_operations; 5046263203eSArnd Bergmann 5056263203eSArnd Bergmann d_instantiate(dentry, inode); 506ba0b996dSJeremy Kerr inc_nlink(dir); 507*75c3cfa8SDavid Howells inc_nlink(d_inode(dentry)); 5086263203eSArnd Bergmann return ret; 5096263203eSArnd Bergmann 5106263203eSArnd Bergmann out_iput: 5116263203eSArnd Bergmann iput(inode); 5126263203eSArnd Bergmann out: 5136263203eSArnd Bergmann return ret; 5146263203eSArnd Bergmann } 5156263203eSArnd Bergmann 516765927b2SAl Viro static int spufs_gang_open(struct path *path) 5176263203eSArnd Bergmann { 5186263203eSArnd Bergmann int ret; 5196263203eSArnd Bergmann struct file *filp; 5206263203eSArnd Bergmann 5216b9cdf39SYann Droneaud ret = get_unused_fd_flags(0); 522bf349a44SAl Viro if (ret < 0) 523bf349a44SAl Viro return ret; 5246263203eSArnd Bergmann 525bf349a44SAl Viro /* 526bf349a44SAl Viro * get references for dget and mntget, will be released 527bf349a44SAl Viro * in error path of *_open(). 528bf349a44SAl Viro */ 529765927b2SAl Viro filp = dentry_open(path, O_RDONLY, current_cred()); 5306263203eSArnd Bergmann if (IS_ERR(filp)) { 5316263203eSArnd Bergmann put_unused_fd(ret); 532bf349a44SAl Viro return PTR_ERR(filp); 5336263203eSArnd Bergmann } 5346263203eSArnd Bergmann 535877907d3SJeremy Kerr filp->f_op = &simple_dir_operations; 5366263203eSArnd Bergmann fd_install(ret, filp); 5376263203eSArnd Bergmann return ret; 5386263203eSArnd Bergmann } 5396263203eSArnd Bergmann 5406263203eSArnd Bergmann static int spufs_create_gang(struct inode *inode, 5416263203eSArnd Bergmann struct dentry *dentry, 542c6684b26SAl Viro struct vfsmount *mnt, umode_t mode) 5436263203eSArnd Bergmann { 544765927b2SAl Viro struct path path = {.mnt = mnt, .dentry = dentry}; 5456263203eSArnd Bergmann int ret; 5466263203eSArnd Bergmann 5476263203eSArnd Bergmann ret = spufs_mkgang(inode, dentry, mode & S_IRWXUGO); 5481ba44cc9SAl Viro if (!ret) { 549765927b2SAl Viro ret = spufs_gang_open(&path); 550877907d3SJeremy Kerr if (ret < 0) { 551877907d3SJeremy Kerr int err = simple_rmdir(inode, dentry); 552877907d3SJeremy Kerr WARN_ON(err); 553877907d3SJeremy Kerr } 5541ba44cc9SAl Viro } 5556263203eSArnd Bergmann return ret; 5566263203eSArnd Bergmann } 5576263203eSArnd Bergmann 5586263203eSArnd Bergmann 559346f4d3cSArnd Bergmann static struct file_system_type spufs_type; 560346f4d3cSArnd Bergmann 5611ba10681SAl Viro long spufs_create(struct path *path, struct dentry *dentry, 562c6684b26SAl Viro unsigned int flags, umode_t mode, struct file *filp) 56367207b96SArnd Bergmann { 564*75c3cfa8SDavid Howells struct inode *dir = d_inode(path->dentry); 56567207b96SArnd Bergmann int ret; 56667207b96SArnd Bergmann 5676263203eSArnd Bergmann /* check if we are on spufs */ 5681ba10681SAl Viro if (path->dentry->d_sb->s_type != &spufs_type) 56925b2692aSAl Viro return -EINVAL; 57067207b96SArnd Bergmann 5716263203eSArnd Bergmann /* don't accept undefined flags */ 5729add11daSArnd Bergmann if (flags & (~SPU_CREATE_FLAG_ALL)) 57325b2692aSAl Viro return -EINVAL; 574c9832948Sarnd@arndb.de 5756263203eSArnd Bergmann /* only threads can be underneath a gang */ 57625b2692aSAl Viro if (path->dentry != path->dentry->d_sb->s_root) 57725b2692aSAl Viro if ((flags & SPU_CREATE_GANG) || !SPUFS_I(dir)->i_gang) 57825b2692aSAl Viro return -EINVAL; 5796263203eSArnd Bergmann 580ce3b0f8dSAl Viro mode &= ~current_umask(); 58167207b96SArnd Bergmann 5826263203eSArnd Bergmann if (flags & SPU_CREATE_GANG) 58325b2692aSAl Viro ret = spufs_create_gang(dir, dentry, path->mnt, mode); 5846263203eSArnd Bergmann else 58525b2692aSAl Viro ret = spufs_create_context(dir, dentry, path->mnt, flags, mode, 5864ac91378SJan Blunck filp); 587826be063SChristoph Hellwig if (ret >= 0) 58825b2692aSAl Viro fsnotify_mkdir(dir, dentry); 58967207b96SArnd Bergmann 59067207b96SArnd Bergmann return ret; 59167207b96SArnd Bergmann } 59267207b96SArnd Bergmann 59367207b96SArnd Bergmann /* File system initialization */ 59467207b96SArnd Bergmann enum { 5952c3e4787SJeremy Kerr Opt_uid, Opt_gid, Opt_mode, Opt_debug, Opt_err, 59667207b96SArnd Bergmann }; 59767207b96SArnd Bergmann 598a447c093SSteven Whitehouse static const match_table_t spufs_tokens = { 59967207b96SArnd Bergmann { Opt_uid, "uid=%d" }, 60067207b96SArnd Bergmann { Opt_gid, "gid=%d" }, 601f11f5ee7SJeremy Kerr { Opt_mode, "mode=%o" }, 6022c3e4787SJeremy Kerr { Opt_debug, "debug" }, 60367207b96SArnd Bergmann { Opt_err, NULL }, 60467207b96SArnd Bergmann }; 60567207b96SArnd Bergmann 60667207b96SArnd Bergmann static int 6072c3e4787SJeremy Kerr spufs_parse_options(struct super_block *sb, char *options, struct inode *root) 60867207b96SArnd Bergmann { 60967207b96SArnd Bergmann char *p; 61067207b96SArnd Bergmann substring_t args[MAX_OPT_ARGS]; 61167207b96SArnd Bergmann 61267207b96SArnd Bergmann while ((p = strsep(&options, ",")) != NULL) { 61367207b96SArnd Bergmann int token, option; 61467207b96SArnd Bergmann 61567207b96SArnd Bergmann if (!*p) 61667207b96SArnd Bergmann continue; 61767207b96SArnd Bergmann 61867207b96SArnd Bergmann token = match_token(p, spufs_tokens, args); 61967207b96SArnd Bergmann switch (token) { 62067207b96SArnd Bergmann case Opt_uid: 62167207b96SArnd Bergmann if (match_int(&args[0], &option)) 62267207b96SArnd Bergmann return 0; 623ed56f34fSDwight Engen root->i_uid = make_kuid(current_user_ns(), option); 624ed56f34fSDwight Engen if (!uid_valid(root->i_uid)) 625ed56f34fSDwight Engen return 0; 62667207b96SArnd Bergmann break; 62767207b96SArnd Bergmann case Opt_gid: 62867207b96SArnd Bergmann if (match_int(&args[0], &option)) 62967207b96SArnd Bergmann return 0; 630ed56f34fSDwight Engen root->i_gid = make_kgid(current_user_ns(), option); 631ed56f34fSDwight Engen if (!gid_valid(root->i_gid)) 632ed56f34fSDwight Engen return 0; 63367207b96SArnd Bergmann break; 634f11f5ee7SJeremy Kerr case Opt_mode: 635f11f5ee7SJeremy Kerr if (match_octal(&args[0], &option)) 636f11f5ee7SJeremy Kerr return 0; 637f11f5ee7SJeremy Kerr root->i_mode = option | S_IFDIR; 638f11f5ee7SJeremy Kerr break; 6392c3e4787SJeremy Kerr case Opt_debug: 6402c3e4787SJeremy Kerr spufs_get_sb_info(sb)->debug = 1; 6412c3e4787SJeremy Kerr break; 64267207b96SArnd Bergmann default: 64367207b96SArnd Bergmann return 0; 64467207b96SArnd Bergmann } 64567207b96SArnd Bergmann } 64667207b96SArnd Bergmann return 1; 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 68067207b96SArnd Bergmann static int 6818b3d6663SArnd Bergmann spufs_create_root(struct super_block *sb, void *data) 6828b3d6663SArnd Bergmann { 68367207b96SArnd Bergmann struct inode *inode; 68467207b96SArnd Bergmann int ret; 68567207b96SArnd Bergmann 6868f18a158SArnd Bergmann ret = -ENODEV; 6878f18a158SArnd Bergmann if (!spu_management_ops) 6888f18a158SArnd Bergmann goto out; 6898f18a158SArnd Bergmann 69067207b96SArnd Bergmann ret = -ENOMEM; 69167207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFDIR | 0775); 69267207b96SArnd Bergmann if (!inode) 69367207b96SArnd Bergmann goto out; 69467207b96SArnd Bergmann 695b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 69667207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 69767207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 698e2ed6e4dSJeremy Kerr inc_nlink(inode); 69967207b96SArnd Bergmann 70067207b96SArnd Bergmann ret = -EINVAL; 7012c3e4787SJeremy Kerr if (!spufs_parse_options(sb, data, inode)) 70267207b96SArnd Bergmann goto out_iput; 70367207b96SArnd Bergmann 70467207b96SArnd Bergmann ret = -ENOMEM; 70548fde701SAl Viro sb->s_root = d_make_root(inode); 70667207b96SArnd Bergmann if (!sb->s_root) 70748fde701SAl Viro goto out; 70867207b96SArnd Bergmann 70967207b96SArnd Bergmann return 0; 71067207b96SArnd Bergmann out_iput: 71167207b96SArnd Bergmann iput(inode); 71267207b96SArnd Bergmann out: 71367207b96SArnd Bergmann return ret; 71467207b96SArnd Bergmann } 71567207b96SArnd Bergmann 71667207b96SArnd Bergmann static int 71767207b96SArnd Bergmann spufs_fill_super(struct super_block *sb, void *data, int silent) 71867207b96SArnd Bergmann { 7192c3e4787SJeremy Kerr struct spufs_sb_info *info; 720b87221deSAlexey Dobriyan static const struct super_operations s_ops = { 72167207b96SArnd Bergmann .alloc_inode = spufs_alloc_inode, 72267207b96SArnd Bergmann .destroy_inode = spufs_destroy_inode, 72367207b96SArnd Bergmann .statfs = simple_statfs, 7240f3f63a4SAl Viro .evict_inode = spufs_evict_inode, 72590d09e14SMiklos Szeredi .show_options = generic_show_options, 72667207b96SArnd Bergmann }; 72767207b96SArnd Bergmann 72890d09e14SMiklos Szeredi save_mount_options(sb, data); 72990d09e14SMiklos Szeredi 7302c3e4787SJeremy Kerr info = kzalloc(sizeof(*info), GFP_KERNEL); 7312c3e4787SJeremy Kerr if (!info) 7322c3e4787SJeremy Kerr return -ENOMEM; 7332c3e4787SJeremy Kerr 73467207b96SArnd Bergmann sb->s_maxbytes = MAX_LFS_FILESIZE; 73567207b96SArnd Bergmann sb->s_blocksize = PAGE_CACHE_SIZE; 73667207b96SArnd Bergmann sb->s_blocksize_bits = PAGE_CACHE_SHIFT; 73767207b96SArnd Bergmann sb->s_magic = SPUFS_MAGIC; 73867207b96SArnd Bergmann sb->s_op = &s_ops; 7392c3e4787SJeremy Kerr sb->s_fs_info = info; 74067207b96SArnd Bergmann 74167207b96SArnd Bergmann return spufs_create_root(sb, data); 74267207b96SArnd Bergmann } 74367207b96SArnd Bergmann 744fc14f2feSAl Viro static struct dentry * 745fc14f2feSAl Viro spufs_mount(struct file_system_type *fstype, int flags, 746fc14f2feSAl Viro const char *name, void *data) 74767207b96SArnd Bergmann { 748fc14f2feSAl Viro return mount_single(fstype, flags, data, spufs_fill_super); 74967207b96SArnd Bergmann } 75067207b96SArnd Bergmann 75167207b96SArnd Bergmann static struct file_system_type spufs_type = { 75267207b96SArnd Bergmann .owner = THIS_MODULE, 75367207b96SArnd Bergmann .name = "spufs", 754fc14f2feSAl Viro .mount = spufs_mount, 75567207b96SArnd Bergmann .kill_sb = kill_litter_super, 75667207b96SArnd Bergmann }; 7577f78e035SEric W. Biederman MODULE_ALIAS_FS("spufs"); 75867207b96SArnd Bergmann 759e78b47a5SArnd Bergmann static int __init spufs_init(void) 76067207b96SArnd Bergmann { 76167207b96SArnd Bergmann int ret; 762bf1ab978SDwayne Grant McConnell 763ccf17e9dSJeremy Kerr ret = -ENODEV; 764ccf17e9dSJeremy Kerr if (!spu_management_ops) 765ccf17e9dSJeremy Kerr goto out; 766ccf17e9dSJeremy Kerr 76767207b96SArnd Bergmann ret = -ENOMEM; 76867207b96SArnd Bergmann spufs_inode_cache = kmem_cache_create("spufs_inode_cache", 76967207b96SArnd Bergmann sizeof(struct spufs_inode_info), 0, 77020c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, spufs_init_once); 77167207b96SArnd Bergmann 77267207b96SArnd Bergmann if (!spufs_inode_cache) 77367207b96SArnd Bergmann goto out; 774c99c1994SAkinobu Mita ret = spu_sched_init(); 77567207b96SArnd Bergmann if (ret) 77667207b96SArnd Bergmann goto out_cache; 77767207b96SArnd Bergmann ret = register_spu_syscalls(&spufs_calls); 77867207b96SArnd Bergmann if (ret) 779640045a1SAl Viro goto out_sched; 780640045a1SAl Viro ret = register_filesystem(&spufs_type); 781640045a1SAl Viro if (ret) 782640045a1SAl Viro goto out_syscalls; 7830afacde3Sarnd@arndb.de 7840afacde3Sarnd@arndb.de spufs_init_isolated_loader(); 785bf1ab978SDwayne Grant McConnell 78667207b96SArnd Bergmann return 0; 787c99c1994SAkinobu Mita 788640045a1SAl Viro out_syscalls: 789640045a1SAl Viro unregister_spu_syscalls(&spufs_calls); 790c99c1994SAkinobu Mita out_sched: 791c99c1994SAkinobu Mita spu_sched_exit(); 79267207b96SArnd Bergmann out_cache: 79367207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 79467207b96SArnd Bergmann out: 79567207b96SArnd Bergmann return ret; 79667207b96SArnd Bergmann } 79767207b96SArnd Bergmann module_init(spufs_init); 79867207b96SArnd Bergmann 799e78b47a5SArnd Bergmann static void __exit spufs_exit(void) 80067207b96SArnd Bergmann { 8018b3d6663SArnd Bergmann spu_sched_exit(); 802db1384b4SAkinobu Mita spufs_exit_isolated_loader(); 80367207b96SArnd Bergmann unregister_spu_syscalls(&spufs_calls); 80467207b96SArnd Bergmann unregister_filesystem(&spufs_type); 80567207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 80667207b96SArnd Bergmann } 80767207b96SArnd Bergmann module_exit(spufs_exit); 80867207b96SArnd Bergmann 80967207b96SArnd Bergmann MODULE_LICENSE("GPL"); 81067207b96SArnd Bergmann MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); 81167207b96SArnd Bergmann 812