From 2836ee4b1acbe7b396219d0677426885f14cd792 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bart.vanassche@sandisk.com>
Date: Wed, 26 Apr 2017 13:47:56 -0700
Subject: blk-mq: Add blk_mq_ops.show_rq()

This new callback function will be used in the next patch to show
more information about SCSI requests.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 include/linux/blk-mq.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 0c4dadb85f62..32bd8eb5ba67 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -142,6 +142,14 @@ struct blk_mq_ops {
 	reinit_request_fn	*reinit_request;
 
 	map_queues_fn		*map_queues;
+
+#ifdef CONFIG_BLK_DEBUG_FS
+	/*
+	 * Used by the debugfs implementation to show driver-specific
+	 * information about a request.
+	 */
+	void (*show_rq)(struct seq_file *m, struct request *rq);
+#endif
 };
 
 enum {
-- 
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