bcache: Refactor bset_tree sysfs stats
We're in the process of turning bset.c into library code, so none of the code in
that file should know about struct cache_set or struct btree - so, move the
btree traversal part of the stats code to sysfs.c.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c
index f34ef56..a3ffc37 100644
--- a/drivers/md/bcache/bset.c
+++ b/drivers/md/bcache/bset.c
@@ -1122,29 +1122,16 @@
}
EXPORT_SYMBOL(bch_btree_sort_lazy);
-/* Sysfs stuff */
-
-struct bset_stats {
- struct btree_op op;
- size_t nodes;
- size_t sets_written, sets_unwritten;
- size_t bytes_written, bytes_unwritten;
- size_t floats, failed;
-};
-
-static int btree_bset_stats(struct btree_op *op, struct btree *b)
+void bch_btree_keys_stats(struct btree_keys *b, struct bset_stats *stats)
{
- struct bset_stats *stats = container_of(op, struct bset_stats, op);
unsigned i;
- stats->nodes++;
-
- for (i = 0; i <= b->keys.nsets; i++) {
- struct bset_tree *t = &b->keys.set[i];
+ for (i = 0; i <= b->nsets; i++) {
+ struct bset_tree *t = &b->set[i];
size_t bytes = t->data->keys * sizeof(uint64_t);
size_t j;
- if (bset_written(&b->keys, t)) {
+ if (bset_written(b, t)) {
stats->sets_written++;
stats->bytes_written += bytes;
@@ -1158,32 +1145,4 @@
stats->bytes_unwritten += bytes;
}
}
-
- return MAP_CONTINUE;
-}
-
-int bch_bset_print_stats(struct cache_set *c, char *buf)
-{
- struct bset_stats t;
- int ret;
-
- memset(&t, 0, sizeof(struct bset_stats));
- bch_btree_op_init(&t.op, -1);
-
- ret = bch_btree_map_nodes(&t.op, c, &ZERO_KEY, btree_bset_stats);
- if (ret < 0)
- return ret;
-
- return snprintf(buf, PAGE_SIZE,
- "btree nodes: %zu\n"
- "written sets: %zu\n"
- "unwritten sets: %zu\n"
- "written key bytes: %zu\n"
- "unwritten key bytes: %zu\n"
- "floats: %zu\n"
- "failed: %zu\n",
- t.nodes,
- t.sets_written, t.sets_unwritten,
- t.bytes_written, t.bytes_unwritten,
- t.floats, t.failed);
}
diff --git a/drivers/md/bcache/bset.h b/drivers/md/bcache/bset.h
index 4fc40fd..4913569 100644
--- a/drivers/md/bcache/bset.h
+++ b/drivers/md/bcache/bset.h
@@ -365,6 +365,14 @@
bch_btree_sort_partial(b, 0, state);
}
+struct bset_stats {
+ size_t sets_written, sets_unwritten;
+ size_t bytes_written, bytes_unwritten;
+ size_t floats, failed;
+};
+
+void bch_btree_keys_stats(struct btree_keys *, struct bset_stats *);
+
/* Bkey utility code */
#define bset_bkey_last(i) bkey_idx((struct bkey *) (i)->d, (i)->keys)
@@ -495,6 +503,4 @@
struct cache_set;
const char *bch_ptr_status(struct cache_set *, const struct bkey *);
-int bch_bset_print_stats(struct cache_set *, char *);
-
#endif
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 7e175db..db2111b 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -400,6 +400,48 @@
};
KTYPE(bch_flash_dev);
+struct bset_stats_op {
+ struct btree_op op;
+ size_t nodes;
+ struct bset_stats stats;
+};
+
+static int btree_bset_stats(struct btree_op *b_op, struct btree *b)
+{
+ struct bset_stats_op *op = container_of(b_op, struct bset_stats_op, op);
+
+ op->nodes++;
+ bch_btree_keys_stats(&b->keys, &op->stats);
+
+ return MAP_CONTINUE;
+}
+
+int bch_bset_print_stats(struct cache_set *c, char *buf)
+{
+ struct bset_stats_op op;
+ int ret;
+
+ memset(&op, 0, sizeof(op));
+ bch_btree_op_init(&op.op, -1);
+
+ ret = bch_btree_map_nodes(&op.op, c, &ZERO_KEY, btree_bset_stats);
+ if (ret < 0)
+ return ret;
+
+ return snprintf(buf, PAGE_SIZE,
+ "btree nodes: %zu\n"
+ "written sets: %zu\n"
+ "unwritten sets: %zu\n"
+ "written key bytes: %zu\n"
+ "unwritten key bytes: %zu\n"
+ "floats: %zu\n"
+ "failed: %zu\n",
+ op.nodes,
+ op.stats.sets_written, op.stats.sets_unwritten,
+ op.stats.bytes_written, op.stats.bytes_unwritten,
+ op.stats.floats, op.stats.failed);
+}
+
SHOW(__bch_cache_set)
{
unsigned root_usage(struct cache_set *c)