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authorOmar Sandoval <osandov@fb.com>2017-01-26 01:32:13 +0300
committerJens Axboe <axboe@fb.com>2017-01-27 18:17:44 +0300
commit24af1ccfe12adddbe17d11801e1689791a4cc282 (patch)
tree6a1620d0d780d0fbdf1e89d7dbfcb3ef401cba3f /include/linux/sbitmap.h
parent7b3938524cfbd7abd1814d879ecfcd2e2a9aa775 (diff)
downloadlinux-24af1ccfe12adddbe17d11801e1689791a4cc282.tar.xz
sbitmap: add helpers for dumping to a seq_file
This is useful debugging information that will be used in the blk-mq debugfs directory. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Omar Sandoval <osandov@fb.com> Changed 'weight' to 'busy'. Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/sbitmap.h')
-rw-r--r--include/linux/sbitmap.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/sbitmap.h b/include/linux/sbitmap.h
index f017fd6e69c4..d4e0a204c118 100644
--- a/include/linux/sbitmap.h
+++ b/include/linux/sbitmap.h
@@ -259,6 +259,26 @@ static inline int sbitmap_test_bit(struct sbitmap *sb, unsigned int bitnr)
unsigned int sbitmap_weight(const struct sbitmap *sb);
/**
+ * sbitmap_show() - Dump &struct sbitmap information to a &struct seq_file.
+ * @sb: Bitmap to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The format may change at any time.
+ */
+void sbitmap_show(struct sbitmap *sb, struct seq_file *m);
+
+/**
+ * sbitmap_bitmap_show() - Write a hex dump of a &struct sbitmap to a &struct
+ * seq_file.
+ * @sb: Bitmap to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The output isn't guaranteed to be internally
+ * consistent.
+ */
+void sbitmap_bitmap_show(struct sbitmap *sb, struct seq_file *m);
+
+/**
* sbitmap_queue_init_node() - Initialize a &struct sbitmap_queue on a specific
* memory node.
* @sbq: Bitmap queue to initialize.
@@ -370,4 +390,14 @@ static inline struct sbq_wait_state *sbq_wait_ptr(struct sbitmap_queue *sbq,
*/
void sbitmap_queue_wake_all(struct sbitmap_queue *sbq);
+/**
+ * sbitmap_queue_show() - Dump &struct sbitmap_queue information to a &struct
+ * seq_file.
+ * @sbq: Bitmap queue to show.
+ * @m: struct seq_file to write to.
+ *
+ * This is intended for debugging. The format may change at any time.
+ */
+void sbitmap_queue_show(struct sbitmap_queue *sbq, struct seq_file *m);
+
#endif /* __LINUX_SCALE_BITMAP_H */