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536 lines
14 KiB
536 lines
14 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#undef TRACE_SYSTEM |
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#define TRACE_SYSTEM block |
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#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ) |
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#define _TRACE_BLOCK_H |
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#include <linux/blktrace_api.h> |
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#include <linux/blkdev.h> |
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#include <linux/buffer_head.h> |
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#include <linux/tracepoint.h> |
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#define RWBS_LEN 8 |
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DECLARE_EVENT_CLASS(block_buffer, |
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TP_PROTO(struct buffer_head *bh), |
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TP_ARGS(bh), |
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TP_STRUCT__entry ( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( size_t, size ) |
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), |
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TP_fast_assign( |
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__entry->dev = bh->b_bdev->bd_dev; |
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__entry->sector = bh->b_blocknr; |
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__entry->size = bh->b_size; |
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), |
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TP_printk("%d,%d sector=%llu size=%zu", |
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MAJOR(__entry->dev), MINOR(__entry->dev), |
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(unsigned long long)__entry->sector, __entry->size |
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) |
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); |
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/** |
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* block_touch_buffer - mark a buffer accessed |
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* @bh: buffer_head being touched |
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* |
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* Called from touch_buffer(). |
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*/ |
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DEFINE_EVENT(block_buffer, block_touch_buffer, |
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TP_PROTO(struct buffer_head *bh), |
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TP_ARGS(bh) |
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); |
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/** |
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* block_dirty_buffer - mark a buffer dirty |
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* @bh: buffer_head being dirtied |
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* |
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* Called from mark_buffer_dirty(). |
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*/ |
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DEFINE_EVENT(block_buffer, block_dirty_buffer, |
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TP_PROTO(struct buffer_head *bh), |
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TP_ARGS(bh) |
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); |
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/** |
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* block_rq_requeue - place block IO request back on a queue |
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* @rq: block IO operation request |
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* |
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* The block operation request @rq is being placed back into queue |
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* @q. For some reason the request was not completed and needs to be |
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* put back in the queue. |
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*/ |
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TRACE_EVENT(block_rq_requeue, |
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TP_PROTO(struct request *rq), |
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TP_ARGS(rq), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__array( char, rwbs, RWBS_LEN ) |
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__dynamic_array( char, cmd, 1 ) |
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), |
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TP_fast_assign( |
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__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
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__entry->sector = blk_rq_trace_sector(rq); |
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__entry->nr_sector = blk_rq_trace_nr_sectors(rq); |
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blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); |
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__get_str(cmd)[0] = '\0'; |
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), |
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TP_printk("%d,%d %s (%s) %llu + %u [%d]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), |
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__entry->rwbs, __get_str(cmd), |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, 0) |
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); |
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/** |
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* block_rq_complete - block IO operation completed by device driver |
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* @rq: block operations request |
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* @error: status code |
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* @nr_bytes: number of completed bytes |
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* |
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* The block_rq_complete tracepoint event indicates that some portion |
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* of operation request has been completed by the device driver. If |
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* the @rq->bio is %NULL, then there is absolutely no additional work to |
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* do for the request. If @rq->bio is non-NULL then there is |
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* additional work required to complete the request. |
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*/ |
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TRACE_EVENT(block_rq_complete, |
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TP_PROTO(struct request *rq, int error, unsigned int nr_bytes), |
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TP_ARGS(rq, error, nr_bytes), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__field( int, error ) |
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__array( char, rwbs, RWBS_LEN ) |
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__dynamic_array( char, cmd, 1 ) |
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), |
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TP_fast_assign( |
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__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
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__entry->sector = blk_rq_pos(rq); |
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__entry->nr_sector = nr_bytes >> 9; |
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__entry->error = error; |
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blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); |
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__get_str(cmd)[0] = '\0'; |
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), |
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TP_printk("%d,%d %s (%s) %llu + %u [%d]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), |
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__entry->rwbs, __get_str(cmd), |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, __entry->error) |
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); |
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DECLARE_EVENT_CLASS(block_rq, |
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TP_PROTO(struct request *rq), |
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TP_ARGS(rq), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__field( unsigned int, bytes ) |
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__array( char, rwbs, RWBS_LEN ) |
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__array( char, comm, TASK_COMM_LEN ) |
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__dynamic_array( char, cmd, 1 ) |
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), |
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TP_fast_assign( |
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__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0; |
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__entry->sector = blk_rq_trace_sector(rq); |
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__entry->nr_sector = blk_rq_trace_nr_sectors(rq); |
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__entry->bytes = blk_rq_bytes(rq); |
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blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); |
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__get_str(cmd)[0] = '\0'; |
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memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
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), |
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TP_printk("%d,%d %s %u (%s) %llu + %u [%s]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), |
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__entry->rwbs, __entry->bytes, __get_str(cmd), |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, __entry->comm) |
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); |
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/** |
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* block_rq_insert - insert block operation request into queue |
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* @rq: block IO operation request |
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* |
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* Called immediately before block operation request @rq is inserted |
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* into queue @q. The fields in the operation request @rq struct can |
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* be examined to determine which device and sectors the pending |
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* operation would access. |
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*/ |
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DEFINE_EVENT(block_rq, block_rq_insert, |
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TP_PROTO(struct request *rq), |
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TP_ARGS(rq) |
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); |
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/** |
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* block_rq_issue - issue pending block IO request operation to device driver |
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* @rq: block IO operation request |
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* |
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* Called when block operation request @rq from queue @q is sent to a |
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* device driver for processing. |
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*/ |
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DEFINE_EVENT(block_rq, block_rq_issue, |
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TP_PROTO(struct request *rq), |
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TP_ARGS(rq) |
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); |
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/** |
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* block_rq_merge - merge request with another one in the elevator |
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* @rq: block IO operation request |
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* |
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* Called when block operation request @rq from queue @q is merged to another |
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* request queued in the elevator. |
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*/ |
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DEFINE_EVENT(block_rq, block_rq_merge, |
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TP_PROTO(struct request *rq), |
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TP_ARGS(rq) |
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); |
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/** |
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* block_bio_complete - completed all work on the block operation |
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* @q: queue holding the block operation |
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* @bio: block operation completed |
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* |
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* This tracepoint indicates there is no further work to do on this |
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* block IO operation @bio. |
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*/ |
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TRACE_EVENT(block_bio_complete, |
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TP_PROTO(struct request_queue *q, struct bio *bio), |
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TP_ARGS(q, bio), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned, nr_sector ) |
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__field( int, error ) |
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__array( char, rwbs, RWBS_LEN) |
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), |
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TP_fast_assign( |
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__entry->dev = bio_dev(bio); |
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__entry->sector = bio->bi_iter.bi_sector; |
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__entry->nr_sector = bio_sectors(bio); |
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__entry->error = blk_status_to_errno(bio->bi_status); |
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blk_fill_rwbs(__entry->rwbs, bio->bi_opf); |
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), |
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TP_printk("%d,%d %s %llu + %u [%d]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, __entry->error) |
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); |
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DECLARE_EVENT_CLASS(block_bio, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__array( char, rwbs, RWBS_LEN ) |
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__array( char, comm, TASK_COMM_LEN ) |
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), |
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TP_fast_assign( |
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__entry->dev = bio_dev(bio); |
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__entry->sector = bio->bi_iter.bi_sector; |
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__entry->nr_sector = bio_sectors(bio); |
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blk_fill_rwbs(__entry->rwbs, bio->bi_opf); |
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memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
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), |
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TP_printk("%d,%d %s %llu + %u [%s]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, __entry->comm) |
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); |
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/** |
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* block_bio_bounce - used bounce buffer when processing block operation |
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* @bio: block operation |
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* |
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* A bounce buffer was used to handle the block operation @bio in @q. |
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* This occurs when hardware limitations prevent a direct transfer of |
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* data between the @bio data memory area and the IO device. Use of a |
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* bounce buffer requires extra copying of data and decreases |
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* performance. |
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*/ |
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DEFINE_EVENT(block_bio, block_bio_bounce, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio) |
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); |
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/** |
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* block_bio_backmerge - merging block operation to the end of an existing operation |
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* @bio: new block operation to merge |
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* |
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* Merging block request @bio to the end of an existing block request. |
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*/ |
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DEFINE_EVENT(block_bio, block_bio_backmerge, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio) |
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); |
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/** |
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* block_bio_frontmerge - merging block operation to the beginning of an existing operation |
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* @bio: new block operation to merge |
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* |
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* Merging block IO operation @bio to the beginning of an existing block request. |
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*/ |
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DEFINE_EVENT(block_bio, block_bio_frontmerge, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio) |
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); |
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/** |
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* block_bio_queue - putting new block IO operation in queue |
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* @bio: new block operation |
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* |
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* About to place the block IO operation @bio into queue @q. |
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*/ |
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DEFINE_EVENT(block_bio, block_bio_queue, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio) |
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); |
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/** |
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* block_getrq - get a free request entry in queue for block IO operations |
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* @bio: pending block IO operation (can be %NULL) |
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* |
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* A request struct has been allocated to handle the block IO operation @bio. |
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*/ |
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DEFINE_EVENT(block_bio, block_getrq, |
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TP_PROTO(struct bio *bio), |
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TP_ARGS(bio) |
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); |
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/** |
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* block_plug - keep operations requests in request queue |
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* @q: request queue to plug |
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* |
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* Plug the request queue @q. Do not allow block operation requests |
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* to be sent to the device driver. Instead, accumulate requests in |
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* the queue to improve throughput performance of the block device. |
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*/ |
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TRACE_EVENT(block_plug, |
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TP_PROTO(struct request_queue *q), |
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TP_ARGS(q), |
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TP_STRUCT__entry( |
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__array( char, comm, TASK_COMM_LEN ) |
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), |
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TP_fast_assign( |
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memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
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), |
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TP_printk("[%s]", __entry->comm) |
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); |
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DECLARE_EVENT_CLASS(block_unplug, |
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TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
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TP_ARGS(q, depth, explicit), |
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TP_STRUCT__entry( |
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__field( int, nr_rq ) |
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__array( char, comm, TASK_COMM_LEN ) |
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), |
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TP_fast_assign( |
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__entry->nr_rq = depth; |
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memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
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), |
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TP_printk("[%s] %d", __entry->comm, __entry->nr_rq) |
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); |
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/** |
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* block_unplug - release of operations requests in request queue |
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* @q: request queue to unplug |
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* @depth: number of requests just added to the queue |
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* @explicit: whether this was an explicit unplug, or one from schedule() |
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* |
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* Unplug request queue @q because device driver is scheduled to work |
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* on elements in the request queue. |
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*/ |
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DEFINE_EVENT(block_unplug, block_unplug, |
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TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), |
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TP_ARGS(q, depth, explicit) |
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); |
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/** |
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* block_split - split a single bio struct into two bio structs |
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* @bio: block operation being split |
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* @new_sector: The starting sector for the new bio |
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* |
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* The bio request @bio needs to be split into two bio requests. The newly |
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* created @bio request starts at @new_sector. This split may be required due to |
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* hardware limitations such as operation crossing device boundaries in a RAID |
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* system. |
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*/ |
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TRACE_EVENT(block_split, |
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TP_PROTO(struct bio *bio, unsigned int new_sector), |
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TP_ARGS(bio, new_sector), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( sector_t, new_sector ) |
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__array( char, rwbs, RWBS_LEN ) |
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__array( char, comm, TASK_COMM_LEN ) |
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), |
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TP_fast_assign( |
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__entry->dev = bio_dev(bio); |
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__entry->sector = bio->bi_iter.bi_sector; |
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__entry->new_sector = new_sector; |
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blk_fill_rwbs(__entry->rwbs, bio->bi_opf); |
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memcpy(__entry->comm, current->comm, TASK_COMM_LEN); |
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), |
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TP_printk("%d,%d %s %llu / %llu [%s]", |
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
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(unsigned long long)__entry->sector, |
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(unsigned long long)__entry->new_sector, |
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__entry->comm) |
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); |
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/** |
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* block_bio_remap - map request for a logical device to the raw device |
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* @bio: revised operation |
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* @dev: original device for the operation |
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* @from: original sector for the operation |
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* |
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* An operation for a logical device has been mapped to the |
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* raw block device. |
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*/ |
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TRACE_EVENT(block_bio_remap, |
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TP_PROTO(struct bio *bio, dev_t dev, sector_t from), |
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TP_ARGS(bio, dev, from), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__field( dev_t, old_dev ) |
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__field( sector_t, old_sector ) |
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__array( char, rwbs, RWBS_LEN) |
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), |
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TP_fast_assign( |
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__entry->dev = bio_dev(bio); |
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__entry->sector = bio->bi_iter.bi_sector; |
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__entry->nr_sector = bio_sectors(bio); |
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__entry->old_dev = dev; |
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__entry->old_sector = from; |
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blk_fill_rwbs(__entry->rwbs, bio->bi_opf); |
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), |
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TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu", |
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, |
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MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
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(unsigned long long)__entry->old_sector) |
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); |
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/** |
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* block_rq_remap - map request for a block operation request |
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* @rq: block IO operation request |
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* @dev: device for the operation |
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* @from: original sector for the operation |
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* |
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* The block operation request @rq in @q has been remapped. The block |
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* operation request @rq holds the current information and @from hold |
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* the original sector. |
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*/ |
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TRACE_EVENT(block_rq_remap, |
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TP_PROTO(struct request *rq, dev_t dev, sector_t from), |
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TP_ARGS(rq, dev, from), |
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TP_STRUCT__entry( |
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__field( dev_t, dev ) |
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__field( sector_t, sector ) |
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__field( unsigned int, nr_sector ) |
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__field( dev_t, old_dev ) |
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__field( sector_t, old_sector ) |
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__field( unsigned int, nr_bios ) |
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__array( char, rwbs, RWBS_LEN) |
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), |
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TP_fast_assign( |
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__entry->dev = disk_devt(rq->rq_disk); |
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__entry->sector = blk_rq_pos(rq); |
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__entry->nr_sector = blk_rq_sectors(rq); |
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__entry->old_dev = dev; |
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__entry->old_sector = from; |
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__entry->nr_bios = blk_rq_count_bios(rq); |
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blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); |
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), |
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TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u", |
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs, |
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(unsigned long long)__entry->sector, |
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__entry->nr_sector, |
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MAJOR(__entry->old_dev), MINOR(__entry->old_dev), |
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(unsigned long long)__entry->old_sector, __entry->nr_bios) |
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); |
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#endif /* _TRACE_BLOCK_H */ |
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/* This part must be outside protection */ |
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#include <trace/define_trace.h> |
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