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bcachefs: trace_key_cache_fill

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-12-13 05:43:00 -05:00
parent dd0d1ff378
commit 0694b43ff9
2 changed files with 32 additions and 5 deletions
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10
fs/bcachefs/btree_key_cache.c
View File

@ -309,6 +309,16 @@ static noinline int btree_key_cache_fill(struct btree_trans *trans,
ret = btree_key_cache_create(trans, ck_path, k);
if (ret)
goto err;
if (trace_key_cache_fill_enabled()) {
struct printbuf buf = PRINTBUF;
bch2_bpos_to_text(&buf, ck_path->pos);
prt_char(&buf, ' ');
bch2_bkey_val_to_text(&buf, trans->c, k);
trace_key_cache_fill(trans, buf.buf);
printbuf_exit(&buf);
}
out:
/* We're not likely to need this iterator again: */
bch2_set_btree_iter_dontneed(&iter);

27
fs/bcachefs/trace.h
View File

@ -1338,6 +1338,12 @@ TRACE_EVENT(trans_restart_key_cache_key_realloced,
__entry->new_u64s)
);
DEFINE_EVENT(transaction_event, trans_restart_write_buffer_flush,
TP_PROTO(struct btree_trans *trans,
unsigned long caller_ip),
TP_ARGS(trans, caller_ip)
);
TRACE_EVENT(path_downgrade,
TP_PROTO(struct btree_trans *trans,
unsigned long caller_ip,
@ -1374,10 +1380,21 @@ TRACE_EVENT(path_downgrade,
__entry->pos_snapshot)
);
DEFINE_EVENT(transaction_event, trans_restart_write_buffer_flush,
TP_PROTO(struct btree_trans *trans,
unsigned long caller_ip),
TP_ARGS(trans, caller_ip)
TRACE_EVENT(key_cache_fill,
TP_PROTO(struct btree_trans *trans, const char *key),
TP_ARGS(trans, key),
TP_STRUCT__entry(
__array(char, trans_fn, 32 )
__string(key, key )
),
TP_fast_assign(
strscpy(__entry->trans_fn, trans->fn, sizeof(__entry->trans_fn));
__assign_str(key);
),
TP_printk("%s %s", __entry->trans_fn, __get_str(key))
);
TRACE_EVENT(write_buffer_flush,
@ -1443,7 +1460,7 @@ TRACE_EVENT(write_buffer_maybe_flush,
TP_STRUCT__entry(
__array(char, trans_fn, 32 )
__field(unsigned long, caller_ip )
__string(key, key )
__string(key, key )
),
TP_fast_assign(