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author | Kent Overstreet <koverstreet@google.com> | 2013-03-23 16:11:31 -0700 |
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committer | Kent Overstreet <koverstreet@google.com> | 2013-03-23 16:11:31 -0700 |
commit | cafe563591446cf80bfbc2fe3bc72a2e36cf1060 (patch) | |
tree | c8ae27b13dcdb0219634376ca5e667df32b1173a /drivers/md/bcache/debug.h | |
parent | ea6749c705d9e629ed03c7336cc929fc6014b834 (diff) | |
download | linux-stable-cafe563591446cf80bfbc2fe3bc72a2e36cf1060.tar.gz linux-stable-cafe563591446cf80bfbc2fe3bc72a2e36cf1060.tar.bz2 linux-stable-cafe563591446cf80bfbc2fe3bc72a2e36cf1060.zip |
bcache: A block layer cache
Does writethrough and writeback caching, handles unclean shutdown, and
has a bunch of other nifty features motivated by real world usage.
See the wiki at http://bcache.evilpiepirate.org for more.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
Diffstat (limited to 'drivers/md/bcache/debug.h')
-rw-r--r-- | drivers/md/bcache/debug.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/md/bcache/debug.h b/drivers/md/bcache/debug.h new file mode 100644 index 000000000000..f9378a218148 --- /dev/null +++ b/drivers/md/bcache/debug.h @@ -0,0 +1,54 @@ +#ifndef _BCACHE_DEBUG_H +#define _BCACHE_DEBUG_H + +/* Btree/bkey debug printing */ + +#define KEYHACK_SIZE 80 +struct keyprint_hack { + char s[KEYHACK_SIZE]; +}; + +struct keyprint_hack bch_pkey(const struct bkey *k); +struct keyprint_hack bch_pbtree(const struct btree *b); +#define pkey(k) (&bch_pkey(k).s[0]) +#define pbtree(b) (&bch_pbtree(b).s[0]) + +#ifdef CONFIG_BCACHE_EDEBUG + +unsigned bch_count_data(struct btree *); +void bch_check_key_order_msg(struct btree *, struct bset *, const char *, ...); +void bch_check_keys(struct btree *, const char *, ...); + +#define bch_check_key_order(b, i) \ + bch_check_key_order_msg(b, i, "keys out of order") +#define EBUG_ON(cond) BUG_ON(cond) + +#else /* EDEBUG */ + +#define bch_count_data(b) 0 +#define bch_check_key_order(b, i) do {} while (0) +#define bch_check_key_order_msg(b, i, ...) do {} while (0) +#define bch_check_keys(b, ...) do {} while (0) +#define EBUG_ON(cond) do {} while (0) + +#endif + +#ifdef CONFIG_BCACHE_DEBUG + +void bch_btree_verify(struct btree *, struct bset *); +void bch_data_verify(struct search *); + +#else /* DEBUG */ + +static inline void bch_btree_verify(struct btree *b, struct bset *i) {} +static inline void bch_data_verify(struct search *s) {}; + +#endif + +#ifdef CONFIG_DEBUG_FS +void bch_debug_init_cache_set(struct cache_set *); +#else +static inline void bch_debug_init_cache_set(struct cache_set *c) {} +#endif + +#endif |