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authorBart Van Assche <bart.vanassche@sandisk.com>2017-04-26 23:47:56 +0300
committerJens Axboe <axboe@fb.com>2017-04-27 00:09:04 +0300
commit2836ee4b1acbe7b396219d0677426885f14cd792 (patch)
tree823c705f789aaa2eb68d9c32913b686c55ea60a7 /include/linux/blk-mq.h
parent8658dca8bd5666f50e02400f844079e520641d8c (diff)
downloadlinux-2836ee4b1acbe7b396219d0677426885f14cd792.tar.xz
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>
Diffstat (limited to 'include/linux/blk-mq.h')
-rw-r--r--include/linux/blk-mq.h8
1 files changed, 8 insertions, 0 deletions
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 {