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block: add tracepoint for blkdev_zone_mgmt

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Add a tracepoint for blkdev_zone_mgmt to trace zone management commands
submitted by higher layers like file systems or user space.

An example output for this tracepoint is as follows:

  mkfs.btrfs-203  [001] .....  42.877493: blkdev_zone_mgmt: 8,0 ZRS 5242880 + 0

This example output shows a REQ_OP_ZONE_RESET operation submitted by
mkfs.btrfs.

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/20250715115324.53308-5-johannes.thumshirn@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Johannes Thumshirn
2025-07-15 13:53:23 +02:00
committed by Jens Axboe
parent 4cc21a0076
commit 4020d22f0d
2 changed files with 36 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
block/blk-zoned.c
View File

@@ -179,6 +179,7 @@ static int blkdev_zone_reset_all(struct block_device *bdev)
struct bio bio;
bio_init(&bio, bdev, NULL, 0, REQ_OP_ZONE_RESET_ALL | REQ_SYNC);
trace_blkdev_zone_mgmt(&bio, 0);
return submit_bio_wait(&bio);
}
@@ -242,6 +243,7 @@ int blkdev_zone_mgmt(struct block_device *bdev, enum req_op op,
cond_resched();
}
trace_blkdev_zone_mgmt(bio, nr_sectors);
ret = submit_bio_wait(bio);
bio_put(bio);

34
include/trace/events/block.h
View File

@@ -599,6 +599,40 @@ TRACE_EVENT(block_rq_remap,
(unsigned long long)__entry->old_sector, __entry->nr_bios)
);
/**
* blkdev_zone_mgmt - Execute a zone management operation on a range of zones
* @bio: The block IO operation sent down to the device
* @nr_sectors: The number of sectors affected by this operation
*
* Execute a zone management operation on a specified range of zones. This
* range is encoded in %nr_sectors, which has to be a multiple of the zone
* size.
*/
TRACE_EVENT(blkdev_zone_mgmt,
TP_PROTO(struct bio *bio, sector_t nr_sectors),
TP_ARGS(bio, nr_sectors),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( sector_t, sector )
__field( sector_t, nr_sectors )
__array( char, rwbs, RWBS_LEN)
),
TP_fast_assign(
__entry->dev = bio_dev(bio);
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sectors = bio_sectors(bio);
blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
),
TP_printk("%d,%d %s %llu + %llu",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
(unsigned long long)__entry->sector,
__entry->nr_sectors)
);
#endif /* _TRACE_BLOCK_H */
/* This part must be outside protection */