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 45e18b890bSChristoph Lameter static struct kmem_cache *spufs_inode_cache; 46c6730ed4SJeremy Kerr char *isolated_loader; 478b0d3121SSebastian Siewior static int isolated_loader_size; 4867207b96SArnd Bergmann 4967207b96SArnd Bergmann static struct inode * 5067207b96SArnd Bergmann spufs_alloc_inode(struct super_block *sb) 5167207b96SArnd Bergmann { 5267207b96SArnd Bergmann struct spufs_inode_info *ei; 5367207b96SArnd Bergmann 54e94b1766SChristoph Lameter ei = kmem_cache_alloc(spufs_inode_cache, GFP_KERNEL); 5567207b96SArnd Bergmann if (!ei) 5667207b96SArnd Bergmann return NULL; 576263203eSArnd Bergmann 586263203eSArnd Bergmann ei->i_gang = NULL; 596263203eSArnd Bergmann ei->i_ctx = NULL; 6043c2bbd9SChristoph Hellwig ei->i_openers = 0; 616263203eSArnd Bergmann 6267207b96SArnd Bergmann return &ei->vfs_inode; 6367207b96SArnd Bergmann } 6467207b96SArnd Bergmann 6567207b96SArnd Bergmann static void 6667207b96SArnd Bergmann spufs_destroy_inode(struct inode *inode) 6767207b96SArnd Bergmann { 6867207b96SArnd Bergmann kmem_cache_free(spufs_inode_cache, SPUFS_I(inode)); 6967207b96SArnd Bergmann } 7067207b96SArnd Bergmann 7167207b96SArnd Bergmann static void 724ba9b9d0SChristoph Lameter spufs_init_once(struct kmem_cache *cachep, void *p) 7367207b96SArnd Bergmann { 7467207b96SArnd Bergmann struct spufs_inode_info *ei = p; 7567207b96SArnd Bergmann 7667207b96SArnd Bergmann inode_init_once(&ei->vfs_inode); 7767207b96SArnd Bergmann } 7867207b96SArnd Bergmann 7967207b96SArnd Bergmann static struct inode * 8067207b96SArnd Bergmann spufs_new_inode(struct super_block *sb, int mode) 8167207b96SArnd Bergmann { 8267207b96SArnd Bergmann struct inode *inode; 8367207b96SArnd Bergmann 8467207b96SArnd Bergmann inode = new_inode(sb); 8567207b96SArnd Bergmann if (!inode) 8667207b96SArnd Bergmann goto out; 8767207b96SArnd Bergmann 8867207b96SArnd Bergmann inode->i_mode = mode; 8967207b96SArnd Bergmann inode->i_uid = current->fsuid; 9067207b96SArnd Bergmann inode->i_gid = current->fsgid; 9167207b96SArnd Bergmann inode->i_blocks = 0; 9267207b96SArnd Bergmann inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; 9367207b96SArnd Bergmann out: 9467207b96SArnd Bergmann return inode; 9567207b96SArnd Bergmann } 9667207b96SArnd Bergmann 9767207b96SArnd Bergmann static int 9867207b96SArnd Bergmann spufs_setattr(struct dentry *dentry, struct iattr *attr) 9967207b96SArnd Bergmann { 10067207b96SArnd Bergmann struct inode *inode = dentry->d_inode; 10167207b96SArnd Bergmann 10267207b96SArnd Bergmann if ((attr->ia_valid & ATTR_SIZE) && 10367207b96SArnd Bergmann (attr->ia_size != inode->i_size)) 10467207b96SArnd Bergmann return -EINVAL; 10567207b96SArnd Bergmann return inode_setattr(inode, attr); 10667207b96SArnd Bergmann } 10767207b96SArnd Bergmann 10867207b96SArnd Bergmann 10967207b96SArnd Bergmann static int 11067207b96SArnd Bergmann spufs_new_file(struct super_block *sb, struct dentry *dentry, 11199ac48f5SArjan van de Ven const struct file_operations *fops, int mode, 112*23d893f5SJeremy Kerr size_t size, struct spu_context *ctx) 11367207b96SArnd Bergmann { 11467207b96SArnd Bergmann static 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; 128*23d893f5SJeremy 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 13667207b96SArnd Bergmann spufs_delete_inode(struct inode *inode) 13767207b96SArnd Bergmann { 1386263203eSArnd Bergmann struct spufs_inode_info *ei = SPUFS_I(inode); 1396263203eSArnd Bergmann 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 clear_inode(inode); 14567207b96SArnd Bergmann } 14667207b96SArnd Bergmann 1473f51dd91SArnd Bergmann static void spufs_prune_dir(struct dentry *dir) 1483f51dd91SArnd Bergmann { 1493f51dd91SArnd Bergmann struct dentry *dentry, *tmp; 1506263203eSArnd Bergmann 1511b1dcc1bSJes Sorensen mutex_lock(&dir->d_inode->i_mutex); 152c3a9aea7SAndrew Morton list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) { 1533f51dd91SArnd Bergmann spin_lock(&dcache_lock); 1543f51dd91SArnd Bergmann spin_lock(&dentry->d_lock); 1553f51dd91SArnd Bergmann if (!(d_unhashed(dentry)) && dentry->d_inode) { 1563f51dd91SArnd Bergmann dget_locked(dentry); 1573f51dd91SArnd Bergmann __d_drop(dentry); 1583f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1593f51dd91SArnd Bergmann simple_unlink(dir->d_inode, dentry); 1603f51dd91SArnd Bergmann spin_unlock(&dcache_lock); 1613f51dd91SArnd Bergmann dput(dentry); 1623f51dd91SArnd Bergmann } else { 1633f51dd91SArnd Bergmann spin_unlock(&dentry->d_lock); 1643f51dd91SArnd Bergmann spin_unlock(&dcache_lock); 1653f51dd91SArnd Bergmann } 1663f51dd91SArnd Bergmann } 1673f51dd91SArnd Bergmann shrink_dcache_parent(dir); 1681b1dcc1bSJes Sorensen mutex_unlock(&dir->d_inode->i_mutex); 1693f51dd91SArnd Bergmann } 1703f51dd91SArnd Bergmann 1716263203eSArnd Bergmann /* Caller must hold parent->i_mutex */ 1726263203eSArnd Bergmann static int spufs_rmdir(struct inode *parent, struct dentry *dir) 1733f51dd91SArnd Bergmann { 1743f51dd91SArnd Bergmann /* remove all entries */ 1756263203eSArnd Bergmann spufs_prune_dir(dir); 176c443acabSJeremy Kerr d_drop(dir); 1773f51dd91SArnd Bergmann 1786263203eSArnd Bergmann return simple_rmdir(parent, dir); 1793f51dd91SArnd Bergmann } 1803f51dd91SArnd Bergmann 181*23d893f5SJeremy Kerr static int spufs_fill_dir(struct dentry *dir, struct spufs_tree_descr *files, 18267207b96SArnd Bergmann int mode, struct spu_context *ctx) 18367207b96SArnd Bergmann { 18487873c86SSebastian Siewior struct dentry *dentry, *tmp; 18567207b96SArnd Bergmann int ret; 18667207b96SArnd Bergmann 18767207b96SArnd Bergmann while (files->name && files->name[0]) { 18867207b96SArnd Bergmann ret = -ENOMEM; 18967207b96SArnd Bergmann dentry = d_alloc_name(dir, files->name); 19067207b96SArnd Bergmann if (!dentry) 19167207b96SArnd Bergmann goto out; 19267207b96SArnd Bergmann ret = spufs_new_file(dir->d_sb, dentry, files->ops, 193*23d893f5SJeremy Kerr files->mode & mode, files->size, ctx); 19467207b96SArnd Bergmann if (ret) 19567207b96SArnd Bergmann goto out; 19667207b96SArnd Bergmann files++; 19767207b96SArnd Bergmann } 19867207b96SArnd Bergmann return 0; 19967207b96SArnd Bergmann out: 20087873c86SSebastian Siewior /* 20187873c86SSebastian Siewior * remove all children from dir. dir->inode is not set so don't 20287873c86SSebastian Siewior * just simply use spufs_prune_dir() and panic afterwards :) 20387873c86SSebastian Siewior * dput() looks like it will do the right thing: 20487873c86SSebastian Siewior * - dec parent's ref counter 20587873c86SSebastian Siewior * - remove child from parent's child list 20687873c86SSebastian Siewior * - free child's inode if possible 20787873c86SSebastian Siewior * - free child 20887873c86SSebastian Siewior */ 20987873c86SSebastian Siewior list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) { 21087873c86SSebastian Siewior dput(dentry); 21187873c86SSebastian Siewior } 21287873c86SSebastian Siewior 21387873c86SSebastian Siewior shrink_dcache_parent(dir); 21467207b96SArnd Bergmann return ret; 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; 2256263203eSArnd Bergmann parent = dir->d_parent->d_inode; 2266263203eSArnd Bergmann ctx = SPUFS_I(dir->d_inode)->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 2330309f02dSMichael Ellerman /* We have to give up the mm_struct */ 2340309f02dSMichael Ellerman spu_forget(ctx); 2350309f02dSMichael Ellerman 23667207b96SArnd Bergmann return dcache_dir_close(inode, file); 23767207b96SArnd Bergmann } 23867207b96SArnd Bergmann 2395dfe4c96SArjan van de Ven const struct file_operations spufs_context_fops = { 24067207b96SArnd Bergmann .open = dcache_dir_open, 24167207b96SArnd Bergmann .release = spufs_dir_close, 24267207b96SArnd Bergmann .llseek = dcache_dir_lseek, 24367207b96SArnd Bergmann .read = generic_read_dir, 24467207b96SArnd Bergmann .readdir = dcache_readdir, 24567207b96SArnd Bergmann .fsync = simple_sync_file, 24667207b96SArnd Bergmann }; 247bf1ab978SDwayne Grant McConnell EXPORT_SYMBOL_GPL(spufs_context_fops); 24867207b96SArnd Bergmann 24967207b96SArnd Bergmann static int 2509add11daSArnd Bergmann spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags, 2519add11daSArnd Bergmann int mode) 25267207b96SArnd Bergmann { 25367207b96SArnd Bergmann int ret; 25467207b96SArnd Bergmann struct inode *inode; 25567207b96SArnd Bergmann struct spu_context *ctx; 25667207b96SArnd Bergmann 25767207b96SArnd Bergmann ret = -ENOSPC; 25867207b96SArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 25967207b96SArnd Bergmann if (!inode) 26067207b96SArnd Bergmann goto out; 26167207b96SArnd Bergmann 26267207b96SArnd Bergmann if (dir->i_mode & S_ISGID) { 26367207b96SArnd Bergmann inode->i_gid = dir->i_gid; 26467207b96SArnd Bergmann inode->i_mode &= S_ISGID; 26567207b96SArnd Bergmann } 2666263203eSArnd Bergmann ctx = alloc_spu_context(SPUFS_I(dir)->i_gang); /* XXX gang */ 26767207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = ctx; 26867207b96SArnd Bergmann if (!ctx) 26967207b96SArnd Bergmann goto out_iput; 27067207b96SArnd Bergmann 2719add11daSArnd Bergmann ctx->flags = flags; 272b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 27367207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 2745737edd1SMark Nutter if (flags & SPU_CREATE_NOSCHED) 2755737edd1SMark Nutter ret = spufs_fill_dir(dentry, spufs_dir_nosched_contents, 2765737edd1SMark Nutter mode, ctx); 2775737edd1SMark Nutter else 27867207b96SArnd Bergmann ret = spufs_fill_dir(dentry, spufs_dir_contents, mode, ctx); 2795737edd1SMark Nutter 28067207b96SArnd Bergmann if (ret) 28167207b96SArnd Bergmann goto out_free_ctx; 28267207b96SArnd Bergmann 28367207b96SArnd Bergmann d_instantiate(dentry, inode); 28467207b96SArnd Bergmann dget(dentry); 28567207b96SArnd Bergmann dir->i_nlink++; 286346f4d3cSArnd Bergmann dentry->d_inode->i_nlink++; 28767207b96SArnd Bergmann goto out; 28867207b96SArnd Bergmann 28967207b96SArnd Bergmann out_free_ctx: 29089df0085SSebastian Siewior spu_forget(ctx); 29167207b96SArnd Bergmann put_spu_context(ctx); 29267207b96SArnd Bergmann out_iput: 29367207b96SArnd Bergmann iput(inode); 29467207b96SArnd Bergmann out: 29567207b96SArnd Bergmann return ret; 29667207b96SArnd Bergmann } 29767207b96SArnd Bergmann 298346f4d3cSArnd Bergmann static int spufs_context_open(struct dentry *dentry, struct vfsmount *mnt) 299346f4d3cSArnd Bergmann { 300346f4d3cSArnd Bergmann int ret; 301346f4d3cSArnd Bergmann struct file *filp; 302346f4d3cSArnd Bergmann 303346f4d3cSArnd Bergmann ret = get_unused_fd(); 304346f4d3cSArnd Bergmann if (ret < 0) { 305346f4d3cSArnd Bergmann dput(dentry); 306346f4d3cSArnd Bergmann mntput(mnt); 307346f4d3cSArnd Bergmann goto out; 308346f4d3cSArnd Bergmann } 309346f4d3cSArnd Bergmann 310346f4d3cSArnd Bergmann filp = dentry_open(dentry, mnt, O_RDONLY); 311346f4d3cSArnd Bergmann if (IS_ERR(filp)) { 312346f4d3cSArnd Bergmann put_unused_fd(ret); 313346f4d3cSArnd Bergmann ret = PTR_ERR(filp); 314346f4d3cSArnd Bergmann goto out; 315346f4d3cSArnd Bergmann } 316346f4d3cSArnd Bergmann 317346f4d3cSArnd Bergmann filp->f_op = &spufs_context_fops; 318346f4d3cSArnd Bergmann fd_install(ret, filp); 319346f4d3cSArnd Bergmann out: 320346f4d3cSArnd Bergmann return ret; 321346f4d3cSArnd Bergmann } 322346f4d3cSArnd Bergmann 3238e68e2f2SArnd Bergmann static struct spu_context * 3248e68e2f2SArnd Bergmann spufs_assert_affinity(unsigned int flags, struct spu_gang *gang, 3258e68e2f2SArnd Bergmann struct file *filp) 3268e68e2f2SArnd Bergmann { 32758119068SAndre Detsch struct spu_context *tmp, *neighbor, *err; 3288e68e2f2SArnd Bergmann int count, node; 3298e68e2f2SArnd Bergmann int aff_supp; 3308e68e2f2SArnd Bergmann 3318e68e2f2SArnd Bergmann aff_supp = !list_empty(&(list_entry(cbe_spu_info[0].spus.next, 3328e68e2f2SArnd Bergmann struct spu, cbe_list))->aff_list); 3338e68e2f2SArnd Bergmann 3348e68e2f2SArnd Bergmann if (!aff_supp) 3358e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3368e68e2f2SArnd Bergmann 3378e68e2f2SArnd Bergmann if (flags & SPU_CREATE_GANG) 3388e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3398e68e2f2SArnd Bergmann 3408e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM && 3418e68e2f2SArnd Bergmann gang->aff_ref_ctx && 3428e68e2f2SArnd Bergmann gang->aff_ref_ctx->flags & SPU_CREATE_AFFINITY_MEM) 3438e68e2f2SArnd Bergmann return ERR_PTR(-EEXIST); 3448e68e2f2SArnd Bergmann 3458e68e2f2SArnd Bergmann if (gang->aff_flags & AFF_MERGED) 3468e68e2f2SArnd Bergmann return ERR_PTR(-EBUSY); 3478e68e2f2SArnd Bergmann 3488e68e2f2SArnd Bergmann neighbor = NULL; 3498e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 3508e68e2f2SArnd Bergmann if (!filp || filp->f_op != &spufs_context_fops) 3518e68e2f2SArnd Bergmann return ERR_PTR(-EINVAL); 3528e68e2f2SArnd Bergmann 3538e68e2f2SArnd Bergmann neighbor = get_spu_context( 3548e68e2f2SArnd Bergmann SPUFS_I(filp->f_dentry->d_inode)->i_ctx); 3558e68e2f2SArnd Bergmann 3568e68e2f2SArnd Bergmann if (!list_empty(&neighbor->aff_list) && !(neighbor->aff_head) && 3578e68e2f2SArnd Bergmann !list_is_last(&neighbor->aff_list, &gang->aff_list_head) && 3588e68e2f2SArnd Bergmann !list_entry(neighbor->aff_list.next, struct spu_context, 35958119068SAndre Detsch aff_list)->aff_head) { 36058119068SAndre Detsch err = ERR_PTR(-EEXIST); 36158119068SAndre Detsch goto out_put_neighbor; 36258119068SAndre Detsch } 3638e68e2f2SArnd Bergmann 36458119068SAndre Detsch if (gang != neighbor->gang) { 36558119068SAndre Detsch err = ERR_PTR(-EINVAL); 36658119068SAndre Detsch goto out_put_neighbor; 36758119068SAndre Detsch } 3688e68e2f2SArnd Bergmann 3698e68e2f2SArnd Bergmann count = 1; 3708e68e2f2SArnd Bergmann list_for_each_entry(tmp, &gang->aff_list_head, aff_list) 3718e68e2f2SArnd Bergmann count++; 3728e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) 3738e68e2f2SArnd Bergmann count++; 3748e68e2f2SArnd Bergmann 3758e68e2f2SArnd Bergmann for (node = 0; node < MAX_NUMNODES; node++) { 3768e68e2f2SArnd Bergmann if ((cbe_spu_info[node].n_spus - atomic_read( 3778e68e2f2SArnd Bergmann &cbe_spu_info[node].reserved_spus)) >= count) 3788e68e2f2SArnd Bergmann break; 3798e68e2f2SArnd Bergmann } 3808e68e2f2SArnd Bergmann 38158119068SAndre Detsch if (node == MAX_NUMNODES) { 38258119068SAndre Detsch err = ERR_PTR(-EEXIST); 38358119068SAndre Detsch goto out_put_neighbor; 38458119068SAndre Detsch } 3858e68e2f2SArnd Bergmann } 3868e68e2f2SArnd Bergmann 3878e68e2f2SArnd Bergmann return neighbor; 38858119068SAndre Detsch 38958119068SAndre Detsch out_put_neighbor: 39058119068SAndre Detsch put_spu_context(neighbor); 39158119068SAndre Detsch return err; 3928e68e2f2SArnd Bergmann } 3938e68e2f2SArnd Bergmann 3948e68e2f2SArnd Bergmann static void 3958e68e2f2SArnd Bergmann spufs_set_affinity(unsigned int flags, struct spu_context *ctx, 3968e68e2f2SArnd Bergmann struct spu_context *neighbor) 3978e68e2f2SArnd Bergmann { 3988e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_MEM) 3998e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 4008e68e2f2SArnd Bergmann 4018e68e2f2SArnd Bergmann if (flags & SPU_CREATE_AFFINITY_SPU) { 4028e68e2f2SArnd Bergmann if (list_empty(&neighbor->aff_list)) { 4038e68e2f2SArnd Bergmann list_add_tail(&neighbor->aff_list, 4048e68e2f2SArnd Bergmann &ctx->gang->aff_list_head); 4058e68e2f2SArnd Bergmann neighbor->aff_head = 1; 4068e68e2f2SArnd Bergmann } 4078e68e2f2SArnd Bergmann 4088e68e2f2SArnd Bergmann if (list_is_last(&neighbor->aff_list, &ctx->gang->aff_list_head) 4098e68e2f2SArnd Bergmann || list_entry(neighbor->aff_list.next, struct spu_context, 4108e68e2f2SArnd Bergmann aff_list)->aff_head) { 4118e68e2f2SArnd Bergmann list_add(&ctx->aff_list, &neighbor->aff_list); 4128e68e2f2SArnd Bergmann } else { 4138e68e2f2SArnd Bergmann list_add_tail(&ctx->aff_list, &neighbor->aff_list); 4148e68e2f2SArnd Bergmann if (neighbor->aff_head) { 4158e68e2f2SArnd Bergmann neighbor->aff_head = 0; 4168e68e2f2SArnd Bergmann ctx->aff_head = 1; 4178e68e2f2SArnd Bergmann } 4188e68e2f2SArnd Bergmann } 4198e68e2f2SArnd Bergmann 4208e68e2f2SArnd Bergmann if (!ctx->gang->aff_ref_ctx) 4218e68e2f2SArnd Bergmann ctx->gang->aff_ref_ctx = ctx; 4228e68e2f2SArnd Bergmann } 4238e68e2f2SArnd Bergmann } 4248e68e2f2SArnd Bergmann 4258e68e2f2SArnd Bergmann static int 4268e68e2f2SArnd Bergmann spufs_create_context(struct inode *inode, struct dentry *dentry, 4278e68e2f2SArnd Bergmann struct vfsmount *mnt, int flags, int mode, 4288e68e2f2SArnd Bergmann struct file *aff_filp) 4296263203eSArnd Bergmann { 4306263203eSArnd Bergmann int ret; 4318e68e2f2SArnd Bergmann int affinity; 4328e68e2f2SArnd Bergmann struct spu_gang *gang; 4338e68e2f2SArnd Bergmann struct spu_context *neighbor; 4346263203eSArnd Bergmann 4355737edd1SMark Nutter ret = -EPERM; 4365737edd1SMark Nutter if ((flags & SPU_CREATE_NOSCHED) && 4375737edd1SMark Nutter !capable(CAP_SYS_NICE)) 4385737edd1SMark Nutter goto out_unlock; 4395737edd1SMark Nutter 4405737edd1SMark Nutter ret = -EINVAL; 4415737edd1SMark Nutter if ((flags & (SPU_CREATE_NOSCHED | SPU_CREATE_ISOLATE)) 4425737edd1SMark Nutter == SPU_CREATE_ISOLATE) 4435737edd1SMark Nutter goto out_unlock; 4445737edd1SMark Nutter 445bd2e5f82SJeremy Kerr ret = -ENODEV; 446bd2e5f82SJeremy Kerr if ((flags & SPU_CREATE_ISOLATE) && !isolated_loader) 447bd2e5f82SJeremy Kerr goto out_unlock; 448bd2e5f82SJeremy Kerr 4498e68e2f2SArnd Bergmann gang = NULL; 4508e68e2f2SArnd Bergmann neighbor = NULL; 4518e68e2f2SArnd Bergmann affinity = flags & (SPU_CREATE_AFFINITY_MEM | SPU_CREATE_AFFINITY_SPU); 4528e68e2f2SArnd Bergmann if (affinity) { 4538e68e2f2SArnd Bergmann gang = SPUFS_I(inode)->i_gang; 4548e68e2f2SArnd Bergmann ret = -EINVAL; 4558e68e2f2SArnd Bergmann if (!gang) 4568e68e2f2SArnd Bergmann goto out_unlock; 4578e68e2f2SArnd Bergmann mutex_lock(&gang->aff_mutex); 4588e68e2f2SArnd Bergmann neighbor = spufs_assert_affinity(flags, gang, aff_filp); 4598e68e2f2SArnd Bergmann if (IS_ERR(neighbor)) { 4608e68e2f2SArnd Bergmann ret = PTR_ERR(neighbor); 4618e68e2f2SArnd Bergmann goto out_aff_unlock; 4628e68e2f2SArnd Bergmann } 4638e68e2f2SArnd Bergmann } 4648e68e2f2SArnd Bergmann 4656263203eSArnd Bergmann ret = spufs_mkdir(inode, dentry, flags, mode & S_IRWXUGO); 4666263203eSArnd Bergmann if (ret) 4678e68e2f2SArnd Bergmann goto out_aff_unlock; 4688e68e2f2SArnd Bergmann 46958119068SAndre Detsch if (affinity) { 4708e68e2f2SArnd Bergmann spufs_set_affinity(flags, SPUFS_I(dentry->d_inode)->i_ctx, 4718e68e2f2SArnd Bergmann neighbor); 47258119068SAndre Detsch if (neighbor) 47358119068SAndre Detsch put_spu_context(neighbor); 47458119068SAndre Detsch } 4756263203eSArnd Bergmann 4766263203eSArnd Bergmann /* 4776263203eSArnd Bergmann * get references for dget and mntget, will be released 4786263203eSArnd Bergmann * in error path of *_open(). 4796263203eSArnd Bergmann */ 4806263203eSArnd Bergmann ret = spufs_context_open(dget(dentry), mntget(mnt)); 4816263203eSArnd Bergmann if (ret < 0) { 4826263203eSArnd Bergmann WARN_ON(spufs_rmdir(inode, dentry)); 4836263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 4846263203eSArnd Bergmann spu_forget(SPUFS_I(dentry->d_inode)->i_ctx); 4856263203eSArnd Bergmann goto out; 4866263203eSArnd Bergmann } 4876263203eSArnd Bergmann 4888e68e2f2SArnd Bergmann out_aff_unlock: 4898e68e2f2SArnd Bergmann if (affinity) 4908e68e2f2SArnd Bergmann mutex_unlock(&gang->aff_mutex); 4916263203eSArnd Bergmann out_unlock: 4926263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 4936263203eSArnd Bergmann out: 4946263203eSArnd Bergmann dput(dentry); 4956263203eSArnd Bergmann return ret; 4966263203eSArnd Bergmann } 4976263203eSArnd Bergmann 4986263203eSArnd Bergmann static int 4996263203eSArnd Bergmann spufs_mkgang(struct inode *dir, struct dentry *dentry, int mode) 5006263203eSArnd Bergmann { 5016263203eSArnd Bergmann int ret; 5026263203eSArnd Bergmann struct inode *inode; 5036263203eSArnd Bergmann struct spu_gang *gang; 5046263203eSArnd Bergmann 5056263203eSArnd Bergmann ret = -ENOSPC; 5066263203eSArnd Bergmann inode = spufs_new_inode(dir->i_sb, mode | S_IFDIR); 5076263203eSArnd Bergmann if (!inode) 5086263203eSArnd Bergmann goto out; 5096263203eSArnd Bergmann 5106263203eSArnd Bergmann ret = 0; 5116263203eSArnd Bergmann if (dir->i_mode & S_ISGID) { 5126263203eSArnd Bergmann inode->i_gid = dir->i_gid; 5136263203eSArnd Bergmann inode->i_mode &= S_ISGID; 5146263203eSArnd Bergmann } 5156263203eSArnd Bergmann gang = alloc_spu_gang(); 5166263203eSArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 5176263203eSArnd Bergmann SPUFS_I(inode)->i_gang = gang; 5186263203eSArnd Bergmann if (!gang) 5196263203eSArnd Bergmann goto out_iput; 5206263203eSArnd Bergmann 521b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 5226263203eSArnd Bergmann inode->i_fop = &simple_dir_operations; 5236263203eSArnd Bergmann 5246263203eSArnd Bergmann d_instantiate(dentry, inode); 5256263203eSArnd Bergmann dir->i_nlink++; 5266263203eSArnd Bergmann dentry->d_inode->i_nlink++; 5276263203eSArnd Bergmann return ret; 5286263203eSArnd Bergmann 5296263203eSArnd Bergmann out_iput: 5306263203eSArnd Bergmann iput(inode); 5316263203eSArnd Bergmann out: 5326263203eSArnd Bergmann return ret; 5336263203eSArnd Bergmann } 5346263203eSArnd Bergmann 5356263203eSArnd Bergmann static int spufs_gang_open(struct dentry *dentry, struct vfsmount *mnt) 5366263203eSArnd Bergmann { 5376263203eSArnd Bergmann int ret; 5386263203eSArnd Bergmann struct file *filp; 5396263203eSArnd Bergmann 5406263203eSArnd Bergmann ret = get_unused_fd(); 5416263203eSArnd Bergmann if (ret < 0) { 5426263203eSArnd Bergmann dput(dentry); 5436263203eSArnd Bergmann mntput(mnt); 5446263203eSArnd Bergmann goto out; 5456263203eSArnd Bergmann } 5466263203eSArnd Bergmann 5476263203eSArnd Bergmann filp = dentry_open(dentry, mnt, O_RDONLY); 5486263203eSArnd Bergmann if (IS_ERR(filp)) { 5496263203eSArnd Bergmann put_unused_fd(ret); 5506263203eSArnd Bergmann ret = PTR_ERR(filp); 5516263203eSArnd Bergmann goto out; 5526263203eSArnd Bergmann } 5536263203eSArnd Bergmann 554877907d3SJeremy Kerr filp->f_op = &simple_dir_operations; 5556263203eSArnd Bergmann fd_install(ret, filp); 5566263203eSArnd Bergmann out: 5576263203eSArnd Bergmann return ret; 5586263203eSArnd Bergmann } 5596263203eSArnd Bergmann 5606263203eSArnd Bergmann static int spufs_create_gang(struct inode *inode, 5616263203eSArnd Bergmann struct dentry *dentry, 5626263203eSArnd Bergmann struct vfsmount *mnt, int mode) 5636263203eSArnd Bergmann { 5646263203eSArnd Bergmann int ret; 5656263203eSArnd Bergmann 5666263203eSArnd Bergmann ret = spufs_mkgang(inode, dentry, mode & S_IRWXUGO); 5676263203eSArnd Bergmann if (ret) 5686263203eSArnd Bergmann goto out; 5696263203eSArnd Bergmann 5706263203eSArnd Bergmann /* 5716263203eSArnd Bergmann * get references for dget and mntget, will be released 5726263203eSArnd Bergmann * in error path of *_open(). 5736263203eSArnd Bergmann */ 5746263203eSArnd Bergmann ret = spufs_gang_open(dget(dentry), mntget(mnt)); 575877907d3SJeremy Kerr if (ret < 0) { 576877907d3SJeremy Kerr int err = simple_rmdir(inode, dentry); 577877907d3SJeremy Kerr WARN_ON(err); 578877907d3SJeremy Kerr } 5796263203eSArnd Bergmann 5806263203eSArnd Bergmann out: 5816263203eSArnd Bergmann mutex_unlock(&inode->i_mutex); 5826263203eSArnd Bergmann dput(dentry); 5836263203eSArnd Bergmann return ret; 5846263203eSArnd Bergmann } 5856263203eSArnd Bergmann 5866263203eSArnd Bergmann 587346f4d3cSArnd Bergmann static struct file_system_type spufs_type; 588346f4d3cSArnd Bergmann 5898e68e2f2SArnd Bergmann long spufs_create(struct nameidata *nd, unsigned int flags, mode_t mode, 5908e68e2f2SArnd Bergmann struct file *filp) 59167207b96SArnd Bergmann { 59267207b96SArnd Bergmann struct dentry *dentry; 59367207b96SArnd Bergmann int ret; 59467207b96SArnd Bergmann 59567207b96SArnd Bergmann ret = -EINVAL; 5966263203eSArnd Bergmann /* check if we are on spufs */ 5974ac91378SJan Blunck if (nd->path.dentry->d_sb->s_type != &spufs_type) 59867207b96SArnd Bergmann goto out; 59967207b96SArnd Bergmann 6006263203eSArnd Bergmann /* don't accept undefined flags */ 6019add11daSArnd Bergmann if (flags & (~SPU_CREATE_FLAG_ALL)) 602c9832948Sarnd@arndb.de goto out; 603c9832948Sarnd@arndb.de 6046263203eSArnd Bergmann /* only threads can be underneath a gang */ 6054ac91378SJan Blunck if (nd->path.dentry != nd->path.dentry->d_sb->s_root) { 6066263203eSArnd Bergmann if ((flags & SPU_CREATE_GANG) || 6074ac91378SJan Blunck !SPUFS_I(nd->path.dentry->d_inode)->i_gang) 6086263203eSArnd Bergmann goto out; 6096263203eSArnd Bergmann } 6106263203eSArnd Bergmann 61167207b96SArnd Bergmann dentry = lookup_create(nd, 1); 61267207b96SArnd Bergmann ret = PTR_ERR(dentry); 61367207b96SArnd Bergmann if (IS_ERR(dentry)) 61467207b96SArnd Bergmann goto out_dir; 61567207b96SArnd Bergmann 61667207b96SArnd Bergmann ret = -EEXIST; 61767207b96SArnd Bergmann if (dentry->d_inode) 61867207b96SArnd Bergmann goto out_dput; 61967207b96SArnd Bergmann 62067207b96SArnd Bergmann mode &= ~current->fs->umask; 62167207b96SArnd Bergmann 6226263203eSArnd Bergmann if (flags & SPU_CREATE_GANG) 623826be063SChristoph Hellwig ret = spufs_create_gang(nd->path.dentry->d_inode, 6244ac91378SJan Blunck dentry, nd->path.mnt, mode); 6256263203eSArnd Bergmann else 626826be063SChristoph Hellwig ret = spufs_create_context(nd->path.dentry->d_inode, 6274ac91378SJan Blunck dentry, nd->path.mnt, flags, mode, 6284ac91378SJan Blunck filp); 629826be063SChristoph Hellwig if (ret >= 0) 630826be063SChristoph Hellwig fsnotify_mkdir(nd->path.dentry->d_inode, dentry); 631826be063SChristoph Hellwig return ret; 63267207b96SArnd Bergmann 63367207b96SArnd Bergmann out_dput: 63467207b96SArnd Bergmann dput(dentry); 63567207b96SArnd Bergmann out_dir: 6364ac91378SJan Blunck mutex_unlock(&nd->path.dentry->d_inode->i_mutex); 63767207b96SArnd Bergmann out: 63867207b96SArnd Bergmann return ret; 63967207b96SArnd Bergmann } 64067207b96SArnd Bergmann 64167207b96SArnd Bergmann /* File system initialization */ 64267207b96SArnd Bergmann enum { 643f11f5ee7SJeremy Kerr Opt_uid, Opt_gid, Opt_mode, Opt_err, 64467207b96SArnd Bergmann }; 64567207b96SArnd Bergmann 64667207b96SArnd Bergmann static match_table_t spufs_tokens = { 64767207b96SArnd Bergmann { Opt_uid, "uid=%d" }, 64867207b96SArnd Bergmann { Opt_gid, "gid=%d" }, 649f11f5ee7SJeremy Kerr { Opt_mode, "mode=%o" }, 65067207b96SArnd Bergmann { Opt_err, NULL }, 65167207b96SArnd Bergmann }; 65267207b96SArnd Bergmann 65367207b96SArnd Bergmann static int 65467207b96SArnd Bergmann spufs_parse_options(char *options, struct inode *root) 65567207b96SArnd Bergmann { 65667207b96SArnd Bergmann char *p; 65767207b96SArnd Bergmann substring_t args[MAX_OPT_ARGS]; 65867207b96SArnd Bergmann 65967207b96SArnd Bergmann while ((p = strsep(&options, ",")) != NULL) { 66067207b96SArnd Bergmann int token, option; 66167207b96SArnd Bergmann 66267207b96SArnd Bergmann if (!*p) 66367207b96SArnd Bergmann continue; 66467207b96SArnd Bergmann 66567207b96SArnd Bergmann token = match_token(p, spufs_tokens, args); 66667207b96SArnd Bergmann switch (token) { 66767207b96SArnd Bergmann case Opt_uid: 66867207b96SArnd Bergmann if (match_int(&args[0], &option)) 66967207b96SArnd Bergmann return 0; 67067207b96SArnd Bergmann root->i_uid = option; 67167207b96SArnd Bergmann break; 67267207b96SArnd Bergmann case Opt_gid: 67367207b96SArnd Bergmann if (match_int(&args[0], &option)) 67467207b96SArnd Bergmann return 0; 67567207b96SArnd Bergmann root->i_gid = option; 67667207b96SArnd Bergmann break; 677f11f5ee7SJeremy Kerr case Opt_mode: 678f11f5ee7SJeremy Kerr if (match_octal(&args[0], &option)) 679f11f5ee7SJeremy Kerr return 0; 680f11f5ee7SJeremy Kerr root->i_mode = option | S_IFDIR; 681f11f5ee7SJeremy Kerr break; 68267207b96SArnd Bergmann default: 68367207b96SArnd Bergmann return 0; 68467207b96SArnd Bergmann } 68567207b96SArnd Bergmann } 68667207b96SArnd Bergmann return 1; 68767207b96SArnd Bergmann } 68867207b96SArnd Bergmann 689db1384b4SAkinobu Mita static void spufs_exit_isolated_loader(void) 690db1384b4SAkinobu Mita { 6918b0d3121SSebastian Siewior free_pages((unsigned long) isolated_loader, 6928b0d3121SSebastian Siewior get_order(isolated_loader_size)); 693db1384b4SAkinobu Mita } 694db1384b4SAkinobu Mita 6950afacde3Sarnd@arndb.de static void 6960afacde3Sarnd@arndb.de spufs_init_isolated_loader(void) 6970afacde3Sarnd@arndb.de { 6980afacde3Sarnd@arndb.de struct device_node *dn; 6990afacde3Sarnd@arndb.de const char *loader; 7000afacde3Sarnd@arndb.de int size; 7010afacde3Sarnd@arndb.de 7020afacde3Sarnd@arndb.de dn = of_find_node_by_path("/spu-isolation"); 7030afacde3Sarnd@arndb.de if (!dn) 7040afacde3Sarnd@arndb.de return; 7050afacde3Sarnd@arndb.de 706e2eb6392SStephen Rothwell loader = of_get_property(dn, "loader", &size); 7070afacde3Sarnd@arndb.de if (!loader) 7080afacde3Sarnd@arndb.de return; 7090afacde3Sarnd@arndb.de 7108b0d3121SSebastian Siewior /* the loader must be align on a 16 byte boundary */ 7118b0d3121SSebastian Siewior isolated_loader = (char *)__get_free_pages(GFP_KERNEL, get_order(size)); 7120afacde3Sarnd@arndb.de if (!isolated_loader) 7130afacde3Sarnd@arndb.de return; 7140afacde3Sarnd@arndb.de 7158b0d3121SSebastian Siewior isolated_loader_size = size; 7160afacde3Sarnd@arndb.de memcpy(isolated_loader, loader, size); 7170afacde3Sarnd@arndb.de printk(KERN_INFO "spufs: SPU isolation mode enabled\n"); 7180afacde3Sarnd@arndb.de } 7190afacde3Sarnd@arndb.de 72067207b96SArnd Bergmann static int 7218b3d6663SArnd Bergmann spufs_create_root(struct super_block *sb, void *data) 7228b3d6663SArnd Bergmann { 72367207b96SArnd Bergmann struct inode *inode; 72467207b96SArnd Bergmann int ret; 72567207b96SArnd Bergmann 7268f18a158SArnd Bergmann ret = -ENODEV; 7278f18a158SArnd Bergmann if (!spu_management_ops) 7288f18a158SArnd Bergmann goto out; 7298f18a158SArnd Bergmann 73067207b96SArnd Bergmann ret = -ENOMEM; 73167207b96SArnd Bergmann inode = spufs_new_inode(sb, S_IFDIR | 0775); 73267207b96SArnd Bergmann if (!inode) 73367207b96SArnd Bergmann goto out; 73467207b96SArnd Bergmann 735b8c295f9SJeremy Kerr inode->i_op = &simple_dir_inode_operations; 73667207b96SArnd Bergmann inode->i_fop = &simple_dir_operations; 73767207b96SArnd Bergmann SPUFS_I(inode)->i_ctx = NULL; 73867207b96SArnd Bergmann 73967207b96SArnd Bergmann ret = -EINVAL; 74067207b96SArnd Bergmann if (!spufs_parse_options(data, inode)) 74167207b96SArnd Bergmann goto out_iput; 74267207b96SArnd Bergmann 74367207b96SArnd Bergmann ret = -ENOMEM; 74467207b96SArnd Bergmann sb->s_root = d_alloc_root(inode); 74567207b96SArnd Bergmann if (!sb->s_root) 74667207b96SArnd Bergmann goto out_iput; 74767207b96SArnd Bergmann 74867207b96SArnd Bergmann return 0; 74967207b96SArnd Bergmann out_iput: 75067207b96SArnd Bergmann iput(inode); 75167207b96SArnd Bergmann out: 75267207b96SArnd Bergmann return ret; 75367207b96SArnd Bergmann } 75467207b96SArnd Bergmann 75567207b96SArnd Bergmann static int 75667207b96SArnd Bergmann spufs_fill_super(struct super_block *sb, void *data, int silent) 75767207b96SArnd Bergmann { 75867207b96SArnd Bergmann static struct super_operations s_ops = { 75967207b96SArnd Bergmann .alloc_inode = spufs_alloc_inode, 76067207b96SArnd Bergmann .destroy_inode = spufs_destroy_inode, 76167207b96SArnd Bergmann .statfs = simple_statfs, 76267207b96SArnd Bergmann .delete_inode = spufs_delete_inode, 76367207b96SArnd Bergmann .drop_inode = generic_delete_inode, 76490d09e14SMiklos Szeredi .show_options = generic_show_options, 76567207b96SArnd Bergmann }; 76667207b96SArnd Bergmann 76790d09e14SMiklos Szeredi save_mount_options(sb, data); 76890d09e14SMiklos Szeredi 76967207b96SArnd Bergmann sb->s_maxbytes = MAX_LFS_FILESIZE; 77067207b96SArnd Bergmann sb->s_blocksize = PAGE_CACHE_SIZE; 77167207b96SArnd Bergmann sb->s_blocksize_bits = PAGE_CACHE_SHIFT; 77267207b96SArnd Bergmann sb->s_magic = SPUFS_MAGIC; 77367207b96SArnd Bergmann sb->s_op = &s_ops; 77467207b96SArnd Bergmann 77567207b96SArnd Bergmann return spufs_create_root(sb, data); 77667207b96SArnd Bergmann } 77767207b96SArnd Bergmann 778454e2398SDavid Howells static int 77967207b96SArnd Bergmann spufs_get_sb(struct file_system_type *fstype, int flags, 780454e2398SDavid Howells const char *name, void *data, struct vfsmount *mnt) 78167207b96SArnd Bergmann { 782454e2398SDavid Howells return get_sb_single(fstype, flags, data, spufs_fill_super, mnt); 78367207b96SArnd Bergmann } 78467207b96SArnd Bergmann 78567207b96SArnd Bergmann static struct file_system_type spufs_type = { 78667207b96SArnd Bergmann .owner = THIS_MODULE, 78767207b96SArnd Bergmann .name = "spufs", 78867207b96SArnd Bergmann .get_sb = spufs_get_sb, 78967207b96SArnd Bergmann .kill_sb = kill_litter_super, 79067207b96SArnd Bergmann }; 79167207b96SArnd Bergmann 792e78b47a5SArnd Bergmann static int __init spufs_init(void) 79367207b96SArnd Bergmann { 79467207b96SArnd Bergmann int ret; 795bf1ab978SDwayne Grant McConnell 796ccf17e9dSJeremy Kerr ret = -ENODEV; 797ccf17e9dSJeremy Kerr if (!spu_management_ops) 798ccf17e9dSJeremy Kerr goto out; 799ccf17e9dSJeremy Kerr 80067207b96SArnd Bergmann ret = -ENOMEM; 80167207b96SArnd Bergmann spufs_inode_cache = kmem_cache_create("spufs_inode_cache", 80267207b96SArnd Bergmann sizeof(struct spufs_inode_info), 0, 80320c2df83SPaul Mundt SLAB_HWCACHE_ALIGN, spufs_init_once); 80467207b96SArnd Bergmann 80567207b96SArnd Bergmann if (!spufs_inode_cache) 80667207b96SArnd Bergmann goto out; 807c99c1994SAkinobu Mita ret = spu_sched_init(); 80867207b96SArnd Bergmann if (ret) 80967207b96SArnd Bergmann goto out_cache; 810c99c1994SAkinobu Mita ret = register_filesystem(&spufs_type); 811c99c1994SAkinobu Mita if (ret) 812c99c1994SAkinobu Mita goto out_sched; 81367207b96SArnd Bergmann ret = register_spu_syscalls(&spufs_calls); 81467207b96SArnd Bergmann if (ret) 81567207b96SArnd Bergmann goto out_fs; 8160afacde3Sarnd@arndb.de 8170afacde3Sarnd@arndb.de spufs_init_isolated_loader(); 818bf1ab978SDwayne Grant McConnell 81967207b96SArnd Bergmann return 0; 820c99c1994SAkinobu Mita 82167207b96SArnd Bergmann out_fs: 82267207b96SArnd Bergmann unregister_filesystem(&spufs_type); 823c99c1994SAkinobu Mita out_sched: 824c99c1994SAkinobu Mita spu_sched_exit(); 82567207b96SArnd Bergmann out_cache: 82667207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 82767207b96SArnd Bergmann out: 82867207b96SArnd Bergmann return ret; 82967207b96SArnd Bergmann } 83067207b96SArnd Bergmann module_init(spufs_init); 83167207b96SArnd Bergmann 832e78b47a5SArnd Bergmann static void __exit spufs_exit(void) 83367207b96SArnd Bergmann { 8348b3d6663SArnd Bergmann spu_sched_exit(); 835db1384b4SAkinobu Mita spufs_exit_isolated_loader(); 83667207b96SArnd Bergmann unregister_spu_syscalls(&spufs_calls); 83767207b96SArnd Bergmann unregister_filesystem(&spufs_type); 83867207b96SArnd Bergmann kmem_cache_destroy(spufs_inode_cache); 83967207b96SArnd Bergmann } 84067207b96SArnd Bergmann module_exit(spufs_exit); 84167207b96SArnd Bergmann 84267207b96SArnd Bergmann MODULE_LICENSE("GPL"); 84367207b96SArnd Bergmann MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); 84467207b96SArnd Bergmann 845