| /* SPDX-License-Identifier: GPL-2.0 */ |
| #undef TRACE_SYSTEM |
| #define TRACE_SYSTEM block |
| |
| #if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ) |
| #define _TRACE_BLOCK_H |
| |
| #include <linux/blktrace_api.h> |
| #include <linux/blkdev.h> |
| #include <linux/buffer_head.h> |
| #include <linux/tracepoint.h> |
| |
| #define RWBS_LEN 8 |
| |
| DECLARE_EVENT_CLASS(block_buffer, |
| |
| TP_PROTO(struct buffer_head *bh), |
| |
| TP_ARGS(bh), |
| |
| TP_STRUCT__entry ( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( size_t, size ) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = bh->b_bdev->bd_dev; |
| __entry->sector = bh->b_blocknr; |
| __entry->size = bh->b_size; |
| ), |
| |
| TP_printk("%d,%d sector=%llu size=%zu", |
| MAJOR(__entry->dev), MINOR(__entry->dev), |
| (unsigned long long)__entry->sector, __entry->size |
| ) |
| ); |
| |
| /** |
| * block_touch_buffer - mark a buffer accessed |
| * @bh: buffer_head being touched |
| * |
| * Called from touch_buffer(). |
| */ |
| DEFINE_EVENT(block_buffer, block_touch_buffer, |
| |
| TP_PROTO(struct buffer_head *bh), |
| |
| TP_ARGS(bh) |
| ); |
| |
| /** |
| * block_dirty_buffer - mark a buffer dirty |
| * @bh: buffer_head being dirtied |
| * |
| * Called from mark_buffer_dirty(). |
| */ |
| DEFINE_EVENT(block_buffer, block_dirty_buffer, |
| |
| TP_PROTO(struct buffer_head *bh), |
| |
| TP_ARGS(bh) |
| ); |
| |
| /** |
| * block_rq_requeue - place block IO request back on a queue |
| * @q: queue holding operation |
| * @rq: block IO operation request |
| * |
| * The block operation request @rq is being placed back into queue |
| * @q. For some reason the request was not completed and needs to be |
| * put back in the queue. |
| */ |
| TRACE_EVENT(block_rq_requeue, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq), |
| |
| TP_ARGS(q, rq), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned int, nr_sector ) |
| __array( char, rwbs, RWBS_LEN ) |
| __dynamic_array( char, cmd, 1 ) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
| __entry->sector = blk_rq_trace_sector(rq); |
| __entry->nr_sector = blk_rq_trace_nr_sectors(rq); |
| |
| blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); |
| __get_str(cmd)[0] = '\0'; |
| ), |
| |
| TP_printk("%d,%d %s (%s) %llu + %u [%d]", |
| MAJOR(__entry->dev), MINOR(__entry->dev), |
| __entry->rwbs, __get_str(cmd), |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, 0) |
| ); |
| |
| /** |
| * block_rq_complete - block IO operation completed by device driver |
| * @rq: block operations request |
| * @error: status code |
| * @nr_bytes: number of completed bytes |
| * |
| * The block_rq_complete tracepoint event indicates that some portion |
| * of operation request has been completed by the device driver. If |
| * the @rq->bio is %NULL, then there is absolutely no additional work to |
| * do for the request. If @rq->bio is non-NULL then there is |
| * additional work required to complete the request. |
| */ |
| TRACE_EVENT(block_rq_complete, |
| |
| TP_PROTO(struct request *rq, int error, unsigned int nr_bytes), |
| |
| TP_ARGS(rq, error, nr_bytes), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned int, nr_sector ) |
| __field( int, error ) |
| __array( char, rwbs, RWBS_LEN ) |
| __dynamic_array( char, cmd, 1 ) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
| __entry->sector = blk_rq_pos(rq); |
| __entry->nr_sector = nr_bytes >> 9; |
| __entry->error = error; |
| |
| blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes); |
| __get_str(cmd)[0] = '\0'; |
| ), |
| |
| TP_printk("%d,%d %s (%s) %llu + %u [%d]", |
| MAJOR(__entry->dev), MINOR(__entry->dev), |
| __entry->rwbs, __get_str(cmd), |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, __entry->error) |
| ); |
| |
| DECLARE_EVENT_CLASS(block_rq, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq), |
| |
| TP_ARGS(q, rq), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned int, nr_sector ) |
| __field( unsigned int, bytes ) |
| __array( char, rwbs, RWBS_LEN ) |
| __array( char, comm, TASK_COMM_LEN ) |
| __dynamic_array( char, cmd, 1 ) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
| __entry->sector = blk_rq_trace_sector(rq); |
| __entry->nr_sector = blk_rq_trace_nr_sectors(rq); |
| __entry->bytes = blk_rq_bytes(rq); |
| |
| blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); |
| __get_str(cmd)[0] = '\0'; |
| memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
| ), |
| |
| TP_printk("%d,%d %s %u (%s) %llu + %u [%s]", |
| MAJOR(__entry->dev), MINOR(__entry->dev), |
| __entry->rwbs, __entry->bytes, __get_str(cmd), |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, __entry->comm) |
| ); |
| |
| /** |
| * block_rq_insert - insert block operation request into queue |
| * @q: target queue |
| * @rq: block IO operation request |
| * |
| * Called immediately before block operation request @rq is inserted |
| * into queue @q. The fields in the operation request @rq struct can |
| * be examined to determine which device and sectors the pending |
| * operation would access. |
| */ |
| DEFINE_EVENT(block_rq, block_rq_insert, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq), |
| |
| TP_ARGS(q, rq) |
| ); |
| |
| /** |
| * block_rq_issue - issue pending block IO request operation to device driver |
| * @q: queue holding operation |
| * @rq: block IO operation operation request |
| * |
| * Called when block operation request @rq from queue @q is sent to a |
| * device driver for processing. |
| */ |
| DEFINE_EVENT(block_rq, block_rq_issue, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq), |
| |
| TP_ARGS(q, rq) |
| ); |
| |
| /** |
| * 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 |
| * @error: io error value |
| * |
| * This tracepoint indicates there is no further work to do on this |
| * block IO operation @bio. |
| */ |
| TRACE_EVENT(block_bio_complete, |
| |
| TP_PROTO(struct request_queue *q, struct bio *bio, int error), |
| |
| TP_ARGS(q, bio, error), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned, nr_sector ) |
| __field( int, error ) |
| __array( char, rwbs, RWBS_LEN) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = bio_dev(bio); |
| __entry->sector = bio->bi_iter.bi_sector; |
| __entry->nr_sector = bio_sectors(bio); |
| __entry->error = error; |
| blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size); |
| ), |
| |
| TP_printk("%d,%d %s %llu + %u [%d]", |
| MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, __entry->error) |
| ); |
| |
| DECLARE_EVENT_CLASS(block_bio_merge, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio), |
| |
| TP_ARGS(q, rq, 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_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. |
| */ |
| 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) |
| ); |
| |
| /** |
| * 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. |
| */ |
| 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) |
| ); |
| |
| /** |
| * 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) |
| ); |
| |
| /** |
| * 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. |
| */ |
| DEFINE_EVENT(block_get_rq, block_getrq, |
| |
| TP_PROTO(struct request_queue *q, struct bio *bio, int rw), |
| |
| TP_ARGS(q, bio, rw) |
| ); |
| |
| /** |
| * block_sleeprq - waiting to get a free request entry in queue for block IO operation |
| * @q: queue for operation |
| * @bio: pending block IO operation (can be %NULL) |
| * @rw: low bit indicates a read (%0) or a write (%1) |
| * |
| * In the case where a request struct cannot be provided for queue @q |
| * the process needs to wait for an request struct to become |
| * available. This tracepoint event is generated each time the |
| * process goes to sleep waiting for request struct become available. |
| */ |
| DEFINE_EVENT(block_get_rq, block_sleeprq, |
| |
| TP_PROTO(struct request_queue *q, struct bio *bio, int rw), |
| |
| TP_ARGS(q, bio, rw) |
| ); |
| |
| /** |
| * block_plug - keep operations requests in request queue |
| * @q: request queue to plug |
| * |
| * Plug the request queue @q. Do not allow block operation requests |
| * to be sent to the device driver. Instead, accumulate requests in |
| * the queue to improve throughput performance of the block device. |
| */ |
| TRACE_EVENT(block_plug, |
| |
| TP_PROTO(struct request_queue *q), |
| |
| TP_ARGS(q), |
| |
| TP_STRUCT__entry( |
| __array( char, comm, TASK_COMM_LEN ) |
| ), |
| |
| TP_fast_assign( |
| memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
| ), |
| |
| TP_printk("[%s]", __entry->comm) |
| ); |
| |
| DECLARE_EVENT_CLASS(block_unplug, |
| |
| TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
| |
| TP_ARGS(q, depth, explicit), |
| |
| TP_STRUCT__entry( |
| __field( int, nr_rq ) |
| __array( char, comm, TASK_COMM_LEN ) |
| ), |
| |
| TP_fast_assign( |
| __entry->nr_rq = depth; |
| memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
| ), |
| |
| TP_printk("[%s] %d", __entry->comm, __entry->nr_rq) |
| ); |
| |
| /** |
| * block_unplug - release of operations requests in request queue |
| * @q: request queue to unplug |
| * @depth: number of requests just added to the queue |
| * @explicit: whether this was an explicit unplug, or one from schedule() |
| * |
| * Unplug request queue @q because device driver is scheduled to work |
| * on elements in the request queue. |
| */ |
| DEFINE_EVENT(block_unplug, block_unplug, |
| |
| TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
| |
| TP_ARGS(q, depth, explicit) |
| ); |
| |
| /** |
| * block_split - split a single bio struct into two bio structs |
| * @q: queue containing the bio |
| * @bio: block operation being split |
| * @new_sector: The starting sector for the new bio |
| * |
| * The bio request @bio in request queue @q needs to be split into two |
| * bio requests. The newly created @bio request starts at |
| * @new_sector. This split may be required due to hardware limitation |
| * such as operation crossing device boundaries in a RAID system. |
| */ |
| TRACE_EVENT(block_split, |
| |
| TP_PROTO(struct request_queue *q, struct bio *bio, |
| unsigned int new_sector), |
| |
| TP_ARGS(q, bio, new_sector), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( sector_t, new_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->new_sector = new_sector; |
| 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 / %llu [%s]", |
| MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
| (unsigned long long)__entry->sector, |
| (unsigned long long)__entry->new_sector, |
| __entry->comm) |
| ); |
| |
| /** |
| * block_bio_remap - map request for a logical device to the raw device |
| * @q: queue holding the operation |
| * @bio: revised operation |
| * @dev: device for the operation |
| * @from: original sector for the operation |
| * |
| * An operation for a logical device has been mapped to the |
| * raw block device. |
| */ |
| TRACE_EVENT(block_bio_remap, |
| |
| TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev, |
| sector_t from), |
| |
| TP_ARGS(q, bio, dev, from), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned int, nr_sector ) |
| __field( dev_t, old_dev ) |
| __field( sector_t, old_sector ) |
| __array( char, rwbs, RWBS_LEN) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = bio_dev(bio); |
| __entry->sector = bio->bi_iter.bi_sector; |
| __entry->nr_sector = bio_sectors(bio); |
| __entry->old_dev = dev; |
| __entry->old_sector = from; |
| blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size); |
| ), |
| |
| TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu", |
| MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, |
| MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
| (unsigned long long)__entry->old_sector) |
| ); |
| |
| /** |
| * block_rq_remap - map request for a block operation request |
| * @q: queue holding the operation |
| * @rq: block IO operation request |
| * @dev: device for the operation |
| * @from: original sector for the operation |
| * |
| * The block operation request @rq in @q has been remapped. The block |
| * operation request @rq holds the current information and @from hold |
| * the original sector. |
| */ |
| TRACE_EVENT(block_rq_remap, |
| |
| TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev, |
| sector_t from), |
| |
| TP_ARGS(q, rq, dev, from), |
| |
| TP_STRUCT__entry( |
| __field( dev_t, dev ) |
| __field( sector_t, sector ) |
| __field( unsigned int, nr_sector ) |
| __field( dev_t, old_dev ) |
| __field( sector_t, old_sector ) |
| __field( unsigned int, nr_bios ) |
| __array( char, rwbs, RWBS_LEN) |
| ), |
| |
| TP_fast_assign( |
| __entry->dev = disk_devt(rq->rq_disk); |
| __entry->sector = blk_rq_pos(rq); |
| __entry->nr_sector = blk_rq_sectors(rq); |
| __entry->old_dev = dev; |
| __entry->old_sector = from; |
| __entry->nr_bios = blk_rq_count_bios(rq); |
| blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq)); |
| ), |
| |
| TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u", |
| MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
| (unsigned long long)__entry->sector, |
| __entry->nr_sector, |
| MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
| (unsigned long long)__entry->old_sector, __entry->nr_bios) |
| ); |
| |
| #endif /* _TRACE_BLOCK_H */ |
| |
| /* This part must be outside protection */ |
| #include <trace/define_trace.h> |
| |