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Add some item cache page tracing

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Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2021-01-22 15:34:28 -08:00
parent 7a96537210
commit 098fc420be
2 changed files with 51 additions and 0 deletions
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4
kmod/src/item.c
View File

@@ -1494,6 +1494,8 @@ retry:
rbtree_erase(&rd->node, &root);
rbtree_insert(&rd->node, par, pnode, &cinf->pg_root);
lru_accessed(sb, cinf, rd);
trace_scoutfs_item_read_page(sb, key, &rd->start,
&rd->end);
continue;
}
@@ -2345,6 +2347,8 @@ retry:
write_lock(&pg->rwlock);
pgi = trim_page_intersection(sb, cinf, pg, right, start, end);
trace_scoutfs_item_invalidate_page(sb, start, end,
&pg->start, &pg->end, pgi);
BUG_ON(pgi == PGI_DISJOINT); /* walk wouldn't ret disjoint */
if (pgi == PGI_INSIDE) {

47
kmod/src/scoutfs_trace.h
View File

@@ -2421,6 +2421,53 @@ TRACE_EVENT(scoutfs_alloc_move,
__entry->ret)
);
TRACE_EVENT(scoutfs_item_read_page,
TP_PROTO(struct super_block *sb, struct scoutfs_key *key,
struct scoutfs_key *pg_start, struct scoutfs_key *pg_end),
TP_ARGS(sb, key, pg_start, pg_end),
TP_STRUCT__entry(
SCSB_TRACE_FIELDS
sk_trace_define(key)
sk_trace_define(pg_start)
sk_trace_define(pg_end)
),
TP_fast_assign(
SCSB_TRACE_ASSIGN(sb);
sk_trace_assign(key, key);
sk_trace_assign(pg_start, pg_start);
sk_trace_assign(pg_end, pg_end);
),
TP_printk(SCSBF" key "SK_FMT" pg_start "SK_FMT" pg_end "SK_FMT,
SCSB_TRACE_ARGS, sk_trace_args(key), sk_trace_args(pg_start),
sk_trace_args(pg_end))
);
TRACE_EVENT(scoutfs_item_invalidate_page,
TP_PROTO(struct super_block *sb, struct scoutfs_key *start,
struct scoutfs_key *end, struct scoutfs_key *pg_start,
struct scoutfs_key *pg_end, int pgi),
TP_ARGS(sb, start, end, pg_start, pg_end, pgi),
TP_STRUCT__entry(
SCSB_TRACE_FIELDS
sk_trace_define(start)
sk_trace_define(end)
sk_trace_define(pg_start)
sk_trace_define(pg_end)
__field(int, pgi)
),
TP_fast_assign(
SCSB_TRACE_ASSIGN(sb);
sk_trace_assign(start, start);
sk_trace_assign(end, end);
sk_trace_assign(pg_start, pg_start);
sk_trace_assign(pg_end, pg_end);
__entry->pgi = pgi;
),
TP_printk(SCSBF" start "SK_FMT" end "SK_FMT" pg_start "SK_FMT" pg_end "SK_FMT" pgi %d",
SCSB_TRACE_ARGS, sk_trace_args(start), sk_trace_args(end),
sk_trace_args(pg_start), sk_trace_args(pg_end), __entry->pgi)
);
#endif /* _TRACE_SCOUTFS_H */
/* This part must be outside protection */