Commit 4cc21a00 authored Jul 15, 2025 by Johannes Thumshirn Committed by Jens Axboe Jul 15, 2025

block: add tracepoint for blk_zone_update_request_bio



Add a tracepoint in blk_zone_update_request_bio() to trace the bio sector
update on ZONE APPEND completions.

An example for this tracepoint is as follows:

<idle>-0 [001] d.h1.  381.746444: blk_zone_update_request_bio: 259,5 ZAS 131072 () 1048832 + 256 none,0,0 [swapper/1]

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20250715115324.53308-4-johannes.thumshirn@wdc.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 5022dae7

block/blk-zoned.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,8 @@
		#include <linux/refcount.h>
		#include <linux/mempool.h>

		#include <trace/events/block.h>

		#include "blk.h"
		#include "blk-mq-sched.h"
		#include "blk-mq-debugfs.h"
		@@ -1198,6 +1200,7 @@ void blk_zone_append_update_request_bio(struct request rq, struct bio bio)
		* lookup the zone write plug.
		*/
		bio->bi_iter.bi_sector = rq->__sector;
		trace_blk_zone_append_update_request_bio(rq);
		}

		void blk_zone_write_plug_bio_endio(struct bio *bio)

include/trace/events/block.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -404,6 +404,17 @@ DEFINE_EVENT(block_bio, block_getrq,
		TP_ARGS(bio)
		);

		/**
		* block_zone_update_request_bio - update the bio sector after a zone append
		* @bio: the completed block IO operation
		*
		* Update the bio's bi_sector after a zone append command has been completed.
		*/
		DEFINE_EVENT(block_rq, blk_zone_append_update_request_bio,
		TP_PROTO(struct request *rq),
		TP_ARGS(rq)
		);

		/**
		* block_plug - keep operations requests in request queue
		* @q: request queue to plug