diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-08 11:51:05 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-08 11:51:05 -0700 |
commit | ebb37277796269da36a8bc5d72ed1e8e1fb7d34b (patch) | |
tree | 0ded627a62a5cec70b18d12825dd858855c135d3 /drivers/md/bcache/stats.h | |
parent | 4de13d7aa8f4d02f4dc99d4609575659f92b3c5a (diff) | |
parent | f50efd2fdbd9b35b11f5778ed85beb764184bda9 (diff) |
Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"It might look big in volume, but when categorized, not a lot of
drivers are touched. The pull request contains:
- mtip32xx fixes from Micron.
- A slew of drbd updates, this time in a nicer series.
- bcache, a flash/ssd caching framework from Kent.
- Fixes for cciss"
* 'for-3.10/drivers' of git://git.kernel.dk/linux-block: (66 commits)
bcache: Use bd_link_disk_holder()
bcache: Allocator cleanup/fixes
cciss: bug fix to prevent cciss from loading in kdump crash kernel
cciss: add cciss_allow_hpsa module parameter
drivers/block/mg_disk.c: add CONFIG_PM_SLEEP to suspend/resume functions
mtip32xx: Workaround for unaligned writes
bcache: Make sure blocksize isn't smaller than device blocksize
bcache: Fix merge_bvec_fn usage for when it modifies the bvm
bcache: Correctly check against BIO_MAX_PAGES
bcache: Hack around stuff that clones up to bi_max_vecs
bcache: Set ra_pages based on backing device's ra_pages
bcache: Take data offset from the bdev superblock.
mtip32xx: mtip32xx: Disable TRIM support
mtip32xx: fix a smatch warning
bcache: Disable broken btree fuzz tester
bcache: Fix a format string overflow
bcache: Fix a minor memory leak on device teardown
bcache: Documentation updates
bcache: Use WARN_ONCE() instead of __WARN()
bcache: Add missing #include <linux/prefetch.h>
...
Diffstat (limited to 'drivers/md/bcache/stats.h')
-rw-r--r-- | drivers/md/bcache/stats.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/md/bcache/stats.h b/drivers/md/bcache/stats.h new file mode 100644 index 000000000000..c7c7a8fd29fe --- /dev/null +++ b/drivers/md/bcache/stats.h @@ -0,0 +1,58 @@ +#ifndef _BCACHE_STATS_H_ +#define _BCACHE_STATS_H_ + +struct cache_stat_collector { + atomic_t cache_hits; + atomic_t cache_misses; + atomic_t cache_bypass_hits; + atomic_t cache_bypass_misses; + atomic_t cache_readaheads; + atomic_t cache_miss_collisions; + atomic_t sectors_bypassed; +}; + +struct cache_stats { + struct kobject kobj; + + unsigned long cache_hits; + unsigned long cache_misses; + unsigned long cache_bypass_hits; + unsigned long cache_bypass_misses; + unsigned long cache_readaheads; + unsigned long cache_miss_collisions; + unsigned long sectors_bypassed; + + unsigned rescale; +}; + +struct cache_accounting { + struct closure cl; + struct timer_list timer; + atomic_t closing; + + struct cache_stat_collector collector; + + struct cache_stats total; + struct cache_stats five_minute; + struct cache_stats hour; + struct cache_stats day; +}; + +struct search; + +void bch_cache_accounting_init(struct cache_accounting *acc, + struct closure *parent); + +int bch_cache_accounting_add_kobjs(struct cache_accounting *acc, + struct kobject *parent); + +void bch_cache_accounting_clear(struct cache_accounting *acc); + +void bch_cache_accounting_destroy(struct cache_accounting *acc); + +void bch_mark_cache_accounting(struct search *s, bool hit, bool bypass); +void bch_mark_cache_readahead(struct search *s); +void bch_mark_cache_miss_collision(struct search *s); +void bch_mark_sectors_bypassed(struct search *s, int sectors); + +#endif /* _BCACHE_STATS_H_ */ |