litmus-rt.git - The LITMUS^RT kernel.

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author	Joerg Roedel <joerg.roedel@amd.com>	2008-12-03 09:06:57 -0500
committer	Joerg Roedel <joerg.roedel@amd.com>	2009-01-03 08:11:08 -0500
commit	d14d65777c2491dd5baf1e17f444b8f653f3cbb1 (patch)
tree	d2067ca36c019d6f7b7b25886d514ce23b68ea07 /scripts/mod
parent	dde57a210dcdce85e2813bab8f88687761d9f6a6 (diff)

VT-d: adapt domain iova_to_phys function for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

Diffstat (limited to 'scripts/mod')

0 files changed, 0 insertions, 0 deletions

/* Copyright 1996-2000 Hans Reiser, see reiserfs/README for licensing * and copyright details */ #ifndef _LINUX_REISER_FS_SB #define _LINUX_REISER_FS_SB #ifdef __KERNEL__ #include <linux/workqueue.h> #include <linux/rwsem.h> #endif typedef enum { reiserfs_attrs_cleared = 0x00000001, } reiserfs_super_block_flags; /* struct reiserfs_super_block accessors/mutators * since this is a disk structure, it will always be in * little endian format. */ #define sb_block_count(sbp) (le32_to_cpu((sbp)->s_v1.s_block_count)) #define set_sb_block_count(sbp,v) ((sbp)->s_v1.s_block_count = cpu_to_le32(v)) #define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_v1.s_free_blocks)) #define set_sb_free_blocks(sbp,v) ((sbp)->s_v1.s_free_blocks = cpu_to_le32(v)) #define sb_root_block(sbp) (le32_to_cpu((sbp)->s_v1.s_root_block)) #define set_sb_root_block(sbp,v) ((sbp)->s_v1.s_root_block = cpu_to_le32(v)) #define sb_jp_journal_1st_block(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_1st_block)) #define set_sb_jp_journal_1st_block(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_1st_block = cpu_to_le32(v)) #define sb_jp_journal_dev(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_dev)) #define set_sb_jp_journal_dev(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_dev = cpu_to_le32(v)) #define sb_jp_journal_size(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_size)) #define set_sb_jp_journal_size(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_size = cpu_to_le32(v)) #define sb_jp_journal_trans_max(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_trans_max)) #define set_sb_jp_journal_trans_max(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_trans_max = cpu_to_le32(v)) #define sb_jp_journal_magic(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_magic)) #define set_sb_jp_journal_magic(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_magic = cpu_to_le32(v)) #define sb_jp_journal_max_batch(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_batch)) #define set_sb_jp_journal_max_batch(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_max_batch = cpu_to_le32(v)) #define sb_jp_jourmal_max_commit_age(sbp) \ (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_commit_age)) #define set_sb_jp_journal_max_commit_age(sbp,v) \ ((sbp)->s_v1.s_journal.jp_journal_max_commit_age = cpu_to_le32(v)) #define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_v1.s_blocksize)) #define set_sb_blocksize(sbp,v) ((sbp)->s_v1.s_blocksize = cpu_to_le16(v)) #define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_maxsize)) #define set_sb_oid_maxsize(sbp,v) ((sbp)->s_v1.s_oid_maxsize = cpu_to_le16(v)) #define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_cursize)) #define set_sb_oid_cursize(sbp,v) ((sbp)->s_v1.s_oid_cursize = cpu_to_le16(v)) #define sb_umount_state(sbp) (le16_to_cpu((sbp)->s_v1.s_umount_state)) #define set_sb_umount_state(sbp,v) ((sbp)->s_v1.s_umount_state = cpu_to_le16(v)) #define sb_fs_state(sbp) (le16_to_cpu((sbp)->s_v1.s_fs_state)) #define set_sb_fs_state(sbp,v) ((sbp)->s_v1.s_fs_state = cpu_to_le16(v)) #define sb_hash_function_code(sbp) \ (le32_to_cpu((sbp)->s_v1.s_hash_function_code)) #define set_sb_hash_function_code(sbp,v) \ ((sbp)->s_v1.s_hash_function_code = cpu_to_le32(v)) #define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_v1.s_tree_height)) #define set_sb_tree_height(sbp,v) ((sbp)->s_v1.s_tree_height = cpu_to_le16(v)) #define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_v1.s_bmap_nr)) #define set_sb_bmap_nr(sbp,v) ((sbp)->s_v1.s_bmap_nr = cpu_to_le16(v)) #define sb_version(sbp) (le16_to_cpu((sbp)->s_v1.s_version)) #define set_sb_version(sbp,v) ((sbp)->s_v1.s_version = cpu_to_le16(v)) #define sb_reserved_for_journal(sbp) \ (le16_to_cpu((sbp)->s_v1.s_reserved_for_journal)) #define set_sb_reserved_for_journal(sbp,v) \ ((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v)) /* LOGGING -- */ /* These all interelate for performance. ** ** If the journal block count is smaller than n transactions, you lose speed. ** I don't know what n is yet, I'm guessing 8-16. ** ** typical transaction size depends on the application, how often fsync is ** called, and how many metadata blocks you dirty in a 30 second period. ** The more small files (<16k) you use, the larger your transactions will ** be. ** ** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal ** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough ** to prevent wrapping before dirty meta blocks get to disk. ** ** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal ** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping. ** ** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash. ** */ /* don't mess with these for a while */ /* we have a node size define somewhere in reiserfs_fs.h. -Hans */ #define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */ #define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */ #define JOURNAL_HASH_SIZE 8192 #define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */ /* One of these for every block in every transaction ** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a ** hash of all the in memory transactions. ** next and prev are used by the current transaction (journal_hash). ** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash ** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging ** to a given transaction. */ struct reiserfs_journal_cnode { struct buffer_head *bh; /* real buffer head */ struct super_block *sb; /* dev of real buffer head */ __u32 blocknr; /* block number of real buffer head, == 0 when buffer on disk */ unsigned long state; struct reiserfs_journal_list *jlist; /* journal list this cnode lives in */ struct reiserfs_journal_cnode *next; /* next in transaction list */ struct reiserfs_journal_cnode *prev; /* prev in transaction list */ struct reiserfs_journal_cnode *hprev; /* prev in hash list */ struct reiserfs_journal_cnode *hnext; /* next in hash list */ }; struct reiserfs_bitmap_node { int id; char *data; struct list_head list; }; struct reiserfs_list_bitmap { struct reiserfs_journal_list *journal_list; struct reiserfs_bitmap_node **bitmaps; }; /* ** one of these for each transaction. The most important part here is the j_realblock. ** this list of cnodes is used to hash all the blocks in all the commits, to mark all the ** real buffer heads dirty once all the commits hit the disk, ** and to make sure every real block in a transaction is on disk before allowing the log area ** to be overwritten */ struct reiserfs_journal_list { unsigned long j_start; unsigned long j_state; unsigned long j_len; atomic_t j_nonzerolen; atomic_t j_commit_left; atomic_t j_older_commits_done; /* all commits older than this on disk */ struct semaphore j_commit_lock; unsigned long j_trans_id; time_t j_timestamp; struct reiserfs_list_bitmap *j_list_bitmap; struct buffer_head *j_commit_bh; /* commit buffer head */ struct reiserfs_journal_cnode *j_realblock; struct reiserfs_journal_cnode *j_freedlist; /* list of buffers that were freed during this trans. free each of these on flush */ /* time ordered list of all active transactions */ struct list_head j_list; /* time ordered list of all transactions we haven't tried to flush yet */ struct list_head j_working_list; /* list of tail conversion targets in need of flush before commit */ struct list_head j_tail_bh_list; /* list of data=ordered buffers in need of flush before commit */ struct list_head j_bh_list; int j_refcount; }; struct reiserfs_journal { struct buffer_head **j_ap_blocks; /* journal blocks on disk */ struct reiserfs_journal_cnode *j_last; /* newest journal block */ struct reiserfs_journal_cnode *j_first; /* oldest journal block. start here for traverse */ struct file *j_dev_file; struct block_device *j_dev_bd; int j_1st_reserved_block; /* first block on s_dev of reserved area journal */ unsigned long j_state; unsigned long j_trans_id; unsigned long j_mount_id; unsigned long j_start; /* start of current waiting commit (index into j_ap_blocks) */ unsigned long j_len; /* length of current waiting commit */ unsigned long j_len_alloc; /* number of buffers requested by journal_begin() */ atomic_t j_wcount; /* count of writers for current commit */ unsigned long j_bcount; /* batch count. allows turning X transactions into 1 */ unsigned long j_first_unflushed_offset; /* first unflushed transactions offset */ unsigned long j_last_flush_trans_id; /* last fully flushed journal timestamp */ struct buffer_head *j_header_bh; time_t j_trans_start_time; /* time this transaction started */ struct semaphore j_lock; struct semaphore j_flush_sem; wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */ atomic_t j_jlock; /* lock for j_join_wait */ int j_list_bitmap_index; /* number of next list bitmap to use */ int j_must_wait; /* no more journal begins allowed. MUST sleep on j_join_wait */ int j_next_full_flush; /* next journal_end will flush all journal list */ int j_next_async_flush; /* next journal_end will flush all async commits */ int j_cnode_used; /* number of cnodes on the used list */ int j_cnode_free; /* number of cnodes on the free list */ unsigned int j_trans_max; /* max number of blocks in a transaction. */ unsigned int j_max_batch; /* max number of blocks to batch into a trans */ unsigned int j_max_commit_age; /* in seconds, how old can an async commit be */ unsigned int j_max_trans_age; /* in seconds, how old can a transaction be */ unsigned int j_default_max_commit_age; /* the default for the max commit age */ struct reiserfs_journal_cnode *j_cnode_free_list;


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