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bcachefs: trace_write_buffer_maybe_flush

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-12-10 10:29:12 -05:00
parent 152c28eef5
commit 42c1d1a954
3 changed files with 27 additions and 1 deletions
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2
fs/bcachefs/backpointers.c
View File

@ -206,7 +206,7 @@ static int bch2_backpointer_del(struct btree_trans *trans, struct bpos pos)
: bch2_btree_delete(trans, BTREE_ID_backpointers, pos, 0);
}
static int bch2_backpointers_maybe_flush(struct btree_trans *trans,
static inline int bch2_backpointers_maybe_flush(struct btree_trans *trans,
struct bkey_s_c visiting_k,
struct bkey_buf *last_flushed)
{

8
fs/bcachefs/btree_write_buffer.c
View File

@ -632,6 +632,14 @@ int bch2_btree_write_buffer_maybe_flush(struct btree_trans *trans,
bch2_bkey_buf_init(&tmp);
if (!bkey_and_val_eq(referring_k, bkey_i_to_s_c(last_flushed->k))) {
if (trace_write_buffer_maybe_flush_enabled()) {
struct printbuf buf = PRINTBUF;
bch2_bkey_val_to_text(&buf, c, referring_k);
trace_write_buffer_maybe_flush(trans, _RET_IP_, buf.buf);
printbuf_exit(&buf);
}
bch2_bkey_buf_reassemble(&tmp, c, referring_k);
if (bkey_is_btree_ptr(referring_k.k)) {

18
fs/bcachefs/trace.h
View File

@ -1436,6 +1436,24 @@ TRACE_EVENT(write_buffer_flush_slowpath,
TP_printk("%zu/%zu", __entry->slowpath, __entry->total)
);
TRACE_EVENT(write_buffer_maybe_flush,
TP_PROTO(struct btree_trans *trans, unsigned long caller_ip, const char *key),
TP_ARGS(trans, caller_ip, key),
TP_STRUCT__entry(
__array(char, trans_fn, 32 )
__field(unsigned long, caller_ip )
__string(key, key )
),
TP_fast_assign(
strscpy(__entry->trans_fn, trans->fn, sizeof(__entry->trans_fn));
__assign_str(key);
),
TP_printk("%s %pS %s", __entry->trans_fn, (void *) __entry->caller_ip, __get_str(key))
);
DEFINE_EVENT(fs_str, rebalance_extent,
TP_PROTO(struct bch_fs *c, const char *str),
TP_ARGS(c, str)