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authorChristoph Hellwig <hch@lst.de>2020-12-03 19:21:36 +0300
committerJens Axboe <axboe@kernel.dk>2020-12-04 19:42:00 +0300
commite8a676d61c07eccfcd9d6fddfe4dcb630651c29a (patch)
treea61b04e78f92bef8c5aff2a15447b609f4b2ecf9 /include/trace/events/block.h
parentb81b8f40c5b43dcb2ff473236baccc421706435f (diff)
downloadlinux-e8a676d61c07eccfcd9d6fddfe4dcb630651c29a.tar.xz
block: simplify and extend the block_bio_merge tracepoint class
The block_bio_merge tracepoint class can be reused for most bio-based tracepoints. For that it just needs to lose the superfluous q and rq parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/trace/events/block.h')
-rw-r--r--include/trace/events/block.h158
1 files changed, 33 insertions, 125 deletions
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 76459cf750e1..506c29dc7c76 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -227,45 +227,6 @@ DEFINE_EVENT(block_rq, block_rq_merge,
);
/**
- * block_bio_bounce - used bounce buffer when processing block operation
- * @q: queue holding the block operation
- * @bio: block operation
- *
- * A bounce buffer was used to handle the block operation @bio in @q.
- * This occurs when hardware limitations prevent a direct transfer of
- * data between the @bio data memory area and the IO device. Use of a
- * bounce buffer requires extra copying of data and decreases
- * performance.
- */
-TRACE_EVENT(block_bio_bounce,
-
- TP_PROTO(struct request_queue *q, struct bio *bio),
-
- TP_ARGS(q, bio),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __array( char, rwbs, RWBS_LEN )
- __array( char, comm, TASK_COMM_LEN )
- ),
-
- TP_fast_assign(
- __entry->dev = bio_dev(bio);
- __entry->sector = bio->bi_iter.bi_sector;
- __entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
-
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
-);
-
-/**
* block_bio_complete - completed all work on the block operation
* @q: queue holding the block operation
* @bio: block operation completed
@@ -301,11 +262,11 @@ TRACE_EVENT(block_bio_complete,
__entry->nr_sector, __entry->error)
);
-DECLARE_EVENT_CLASS(block_bio_merge,
+DECLARE_EVENT_CLASS(block_bio,
- TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
+ TP_PROTO(struct bio *bio),
- TP_ARGS(q, rq, bio),
+ TP_ARGS(bio),
TP_STRUCT__entry(
__field( dev_t, dev )
@@ -330,115 +291,62 @@ DECLARE_EVENT_CLASS(block_bio_merge,
);
/**
+ * block_bio_bounce - used bounce buffer when processing block operation
+ * @bio: block operation
+ *
+ * A bounce buffer was used to handle the block operation @bio in @q.
+ * This occurs when hardware limitations prevent a direct transfer of
+ * data between the @bio data memory area and the IO device. Use of a
+ * bounce buffer requires extra copying of data and decreases
+ * performance.
+ */
+DEFINE_EVENT(block_bio, block_bio_bounce,
+ TP_PROTO(struct bio *bio),
+ TP_ARGS(bio)
+);
+
+/**
* block_bio_backmerge - merging block operation to the end of an existing operation
- * @q: queue holding operation
- * @rq: request bio is being merged into
* @bio: new block operation to merge
*
- * Merging block request @bio to the end of an existing block request
- * in queue @q.
+ * Merging block request @bio to the end of an existing block request.
*/
-DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
-
- TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
-
- TP_ARGS(q, rq, bio)
+DEFINE_EVENT(block_bio, block_bio_backmerge,
+ TP_PROTO(struct bio *bio),
+ TP_ARGS(bio)
);
/**
* block_bio_frontmerge - merging block operation to the beginning of an existing operation
- * @q: queue holding operation
- * @rq: request bio is being merged into
* @bio: new block operation to merge
*
- * Merging block IO operation @bio to the beginning of an existing block
- * operation in queue @q.
+ * Merging block IO operation @bio to the beginning of an existing block request.
*/
-DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
-
- TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
-
- TP_ARGS(q, rq, bio)
+DEFINE_EVENT(block_bio, block_bio_frontmerge,
+ TP_PROTO(struct bio *bio),
+ TP_ARGS(bio)
);
/**
* block_bio_queue - putting new block IO operation in queue
- * @q: queue holding operation
* @bio: new block operation
*
* About to place the block IO operation @bio into queue @q.
*/
-TRACE_EVENT(block_bio_queue,
-
- TP_PROTO(struct request_queue *q, struct bio *bio),
-
- TP_ARGS(q, bio),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __array( char, rwbs, RWBS_LEN )
- __array( char, comm, TASK_COMM_LEN )
- ),
-
- TP_fast_assign(
- __entry->dev = bio_dev(bio);
- __entry->sector = bio->bi_iter.bi_sector;
- __entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
-
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
-);
-
-DECLARE_EVENT_CLASS(block_get_rq,
-
- TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
-
- TP_ARGS(q, bio, rw),
-
- TP_STRUCT__entry(
- __field( dev_t, dev )
- __field( sector_t, sector )
- __field( unsigned int, nr_sector )
- __array( char, rwbs, RWBS_LEN )
- __array( char, comm, TASK_COMM_LEN )
- ),
-
- TP_fast_assign(
- __entry->dev = bio ? bio_dev(bio) : 0;
- __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
- __entry->nr_sector = bio ? bio_sectors(bio) : 0;
- blk_fill_rwbs(__entry->rwbs,
- bio ? bio->bi_opf : 0, __entry->nr_sector);
- memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
- ),
-
- TP_printk("%d,%d %s %llu + %u [%s]",
- MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
- (unsigned long long)__entry->sector,
- __entry->nr_sector, __entry->comm)
+DEFINE_EVENT(block_bio, block_bio_queue,
+ TP_PROTO(struct bio *bio),
+ TP_ARGS(bio)
);
/**
* block_getrq - get a free request entry in queue for block IO operations
- * @q: queue for operations
* @bio: pending block IO operation (can be %NULL)
- * @rw: low bit indicates a read (%0) or a write (%1)
*
- * A request struct for queue @q has been allocated to handle the
- * block IO operation @bio.
+ * A request struct has been allocated to handle the block IO operation @bio.
*/
-DEFINE_EVENT(block_get_rq, block_getrq,
-
- TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
-
- TP_ARGS(q, bio, rw)
+DEFINE_EVENT(block_bio, block_getrq,
+ TP_PROTO(struct bio *bio),
+ TP_ARGS(bio)
);
/**