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| author | Daniel Hill <daniel@gluo.nz> | 2022-07-14 20:33:09 +1200 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:35 -0400 |
| commit | c807ca95a6e20bedbbb84287bc7087c2b2b775de (patch) | |
| tree | 0add067029709ede728fd48ca3761325fe1cd8fc /fs/bcachefs/bcachefs.h | |
| parent | 25055c690f9ab3d4fb72b8a07323bf952c2682dc (diff) | |
| download | lwn-c807ca95a6e20bedbbb84287bc7087c2b2b775de.tar.gz lwn-c807ca95a6e20bedbbb84287bc7087c2b2b775de.zip | |
bcachefs: added lock held time stats
We now record the length of time btree locks are held and expose this in debugfs.
Enabled via CONFIG_BCACHEFS_LOCK_TIME_STATS.
Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/bcachefs.h')
| -rw-r--r-- | fs/bcachefs/bcachefs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h index 7020eee5de21..9cd6f840b71a 100644 --- a/fs/bcachefs/bcachefs.h +++ b/fs/bcachefs/bcachefs.h @@ -319,6 +319,8 @@ BCH_DEBUG_PARAMS_DEBUG() #undef BCH_DEBUG_PARAM #endif +#define BCH_LOCK_TIME_NR 128 + #define BCH_TIME_STATS() \ x(btree_node_mem_alloc) \ x(btree_node_split) \ @@ -527,6 +529,11 @@ struct btree_debug { unsigned id; }; +struct lock_held_stats { + struct bch2_time_stats times[BCH_LOCK_TIME_NR]; + const char *names[BCH_LOCK_TIME_NR]; +}; + struct bch_fs_pcpu { u64 sectors_available; }; @@ -920,6 +927,8 @@ mempool_t bio_bounce_pages; bool promote_whole_extents; struct bch2_time_stats times[BCH_TIME_STAT_NR]; + + struct lock_held_stats lock_held_stats; }; static inline void bch2_set_ra_pages(struct bch_fs *c, unsigned ra_pages) |