diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-08-10 14:31:17 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-08-13 23:00:34 -0400 |
| commit | 790666c8ac6427ddaa00f502dc44073c1e039355 (patch) | |
| tree | a7d0f5742c1ec857a247cab366ac312784e348a7 /fs | |
| parent | 7254555c440ff6b136aa97fb3c33fd5e0bb4fb9f (diff) | |
bcachefs: Improve trans_blocked_journal_reclaim tracepoint
include information about the state of the btree key cache
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bcachefs/btree_key_cache.h | 9 | ||||
| -rw-r--r-- | fs/bcachefs/trace.c | 1 | ||||
| -rw-r--r-- | fs/bcachefs/trace.h | 27 |
3 files changed, 33 insertions, 4 deletions
diff --git a/fs/bcachefs/btree_key_cache.h b/fs/bcachefs/btree_key_cache.h index 113309f62918..51d6289b8dee 100644 --- a/fs/bcachefs/btree_key_cache.h +++ b/fs/bcachefs/btree_key_cache.h @@ -11,13 +11,18 @@ static inline size_t bch2_nr_btree_keys_need_flush(struct bch_fs *c) return max_t(ssize_t, 0, nr_dirty - max_dirty); } -static inline bool bch2_btree_key_cache_must_wait(struct bch_fs *c) +static inline ssize_t __bch2_btree_key_cache_must_wait(struct bch_fs *c) { size_t nr_dirty = atomic_long_read(&c->btree_key_cache.nr_dirty); size_t nr_keys = atomic_long_read(&c->btree_key_cache.nr_keys); size_t max_dirty = 4096 + (nr_keys * 3) / 4; - return nr_dirty > max_dirty; + return nr_dirty - max_dirty; +} + +static inline bool bch2_btree_key_cache_must_wait(struct bch_fs *c) +{ + return __bch2_btree_key_cache_must_wait(c) > 0; } static inline bool bch2_btree_key_cache_wait_done(struct bch_fs *c) diff --git a/fs/bcachefs/trace.c b/fs/bcachefs/trace.c index dc48b52b01b4..dfad1d06633d 100644 --- a/fs/bcachefs/trace.c +++ b/fs/bcachefs/trace.c @@ -4,6 +4,7 @@ #include "buckets.h" #include "btree_cache.h" #include "btree_iter.h" +#include "btree_key_cache.h" #include "btree_locking.h" #include "btree_update_interior.h" #include "keylist.h" diff --git a/fs/bcachefs/trace.h b/fs/bcachefs/trace.h index d0e6b9deb6cb..c62f00322d1e 100644 --- a/fs/bcachefs/trace.h +++ b/fs/bcachefs/trace.h @@ -988,10 +988,33 @@ TRACE_EVENT(trans_restart_split_race, __entry->u64s_remaining) ); -DEFINE_EVENT(transaction_event, trans_blocked_journal_reclaim, +TRACE_EVENT(trans_blocked_journal_reclaim, TP_PROTO(struct btree_trans *trans, unsigned long caller_ip), - TP_ARGS(trans, caller_ip) + TP_ARGS(trans, caller_ip), + + TP_STRUCT__entry( + __array(char, trans_fn, 32 ) + __field(unsigned long, caller_ip ) + + __field(unsigned long, key_cache_nr_keys ) + __field(unsigned long, key_cache_nr_dirty ) + __field(long, must_wait ) + ), + + TP_fast_assign( + strscpy(__entry->trans_fn, trans->fn, sizeof(__entry->trans_fn)); + __entry->caller_ip = caller_ip; + __entry->key_cache_nr_keys = atomic_long_read(&trans->c->btree_key_cache.nr_keys); + __entry->key_cache_nr_dirty = atomic_long_read(&trans->c->btree_key_cache.nr_dirty); + __entry->must_wait = __bch2_btree_key_cache_must_wait(trans->c); + ), + + TP_printk("%s %pS key cache keys %lu dirty %lu must_wait %li", + __entry->trans_fn, (void *) __entry->caller_ip, + __entry->key_cache_nr_keys, + __entry->key_cache_nr_dirty, + __entry->must_wait) ); TRACE_EVENT(trans_restart_journal_preres_get, |