diff options
Diffstat (limited to 'include/trace/events/block.h')
| -rw-r--r-- | include/trace/events/block.h | 743 |
1 files changed, 743 insertions, 0 deletions
diff --git a/include/trace/events/block.h b/include/trace/events/block.h new file mode 100644 index 000000000..9c97a1685 --- /dev/null +++ b/include/trace/events/block.h @@ -0,0 +1,743 @@ +/* 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> +#include <uapi/linux/ioprio.h> + +#define RWBS_LEN 10 + +#define IOPRIO_CLASS_STRINGS \ + { IOPRIO_CLASS_NONE, "none" }, \ + { IOPRIO_CLASS_RT, "rt" }, \ + { IOPRIO_CLASS_BE, "be" }, \ + { IOPRIO_CLASS_IDLE, "idle" }, \ + { IOPRIO_CLASS_INVALID, "invalid"} + +#ifdef CONFIG_BUFFER_HEAD +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) +); +#endif /* CONFIG_BUFFER_HEAD */ + +/** + * block_rq_requeue - place block IO request back on a queue + * @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 *rq), + + TP_ARGS(rq), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( unsigned short, ioprio ) + __array( char, rwbs, RWBS_LEN ) + __dynamic_array( char, cmd, 1 ) + ), + + TP_fast_assign( + __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0; + __entry->sector = blk_rq_trace_sector(rq); + __entry->nr_sector = blk_rq_trace_nr_sectors(rq); + __entry->ioprio = req_get_ioprio(rq); + + blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); + __get_str(cmd)[0] = '\0'; + ), + + TP_printk("%d,%d %s (%s) %llu + %u %s,%u,%u [%d]", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->rwbs, __get_str(cmd), + (unsigned long long)__entry->sector, __entry->nr_sector, + __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio), + IOPRIO_CLASS_STRINGS), + IOPRIO_PRIO_HINT(__entry->ioprio), + IOPRIO_PRIO_LEVEL(__entry->ioprio), 0) +); + +DECLARE_EVENT_CLASS(block_rq_completion, + + TP_PROTO(struct request *rq, blk_status_t 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 ) + __field( unsigned short, ioprio ) + __array( char, rwbs, RWBS_LEN ) + __dynamic_array( char, cmd, 1 ) + ), + + TP_fast_assign( + __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0; + __entry->sector = blk_rq_pos(rq); + __entry->nr_sector = nr_bytes >> 9; + __entry->error = blk_status_to_errno(error); + __entry->ioprio = req_get_ioprio(rq); + + blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); + __get_str(cmd)[0] = '\0'; + ), + + TP_printk("%d,%d %s (%s) %llu + %u %s,%u,%u [%d]", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->rwbs, __get_str(cmd), + (unsigned long long)__entry->sector, __entry->nr_sector, + __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio), + IOPRIO_CLASS_STRINGS), + IOPRIO_PRIO_HINT(__entry->ioprio), + IOPRIO_PRIO_LEVEL(__entry->ioprio), __entry->error) +); + +/** + * 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. + */ +DEFINE_EVENT(block_rq_completion, block_rq_complete, + + TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes), + + TP_ARGS(rq, error, nr_bytes) +); + +/** + * block_rq_error - block IO operation error reported by device driver + * @rq: block operations request + * @error: status code + * @nr_bytes: number of completed bytes + * + * The block_rq_error tracepoint event indicates that some portion + * of operation request has failed as reported by the device driver. + */ +DEFINE_EVENT(block_rq_completion, block_rq_error, + + TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes), + + TP_ARGS(rq, error, nr_bytes) +); + +DECLARE_EVENT_CLASS(block_rq, + + TP_PROTO(struct request *rq), + + TP_ARGS(rq), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( unsigned int, bytes ) + __field( unsigned short, ioprio ) + __array( char, rwbs, RWBS_LEN ) + __array( char, comm, TASK_COMM_LEN ) + __dynamic_array( char, cmd, 1 ) + ), + + TP_fast_assign( + __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0; + __entry->sector = blk_rq_trace_sector(rq); + __entry->nr_sector = blk_rq_trace_nr_sectors(rq); + __entry->bytes = blk_rq_bytes(rq); + __entry->ioprio = req_get_ioprio(rq); + + blk_fill_rwbs(__entry->rwbs, rq->cmd_flags); + __get_str(cmd)[0] = '\0'; + memcpy(__entry->comm, current->comm, TASK_COMM_LEN); + ), + + TP_printk("%d,%d %s %u (%s) %llu + %u %s,%u,%u [%s]", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->rwbs, __entry->bytes, __get_str(cmd), + (unsigned long long)__entry->sector, __entry->nr_sector, + __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio), + IOPRIO_CLASS_STRINGS), + IOPRIO_PRIO_HINT(__entry->ioprio), + IOPRIO_PRIO_LEVEL(__entry->ioprio), __entry->comm) +); + +/** + * block_rq_tag_wait - triggered when a request is starved of a tag + * @q: request queue of the target device + * @hctx: hardware context of the request experiencing starvation + * @is_sched_tag: indicates whether the starved pool is the software scheduler + * @alloc_flags: allocation flags dictating the specific tag pool + * + * Called immediately before the submitting context is forced to block due + * to the exhaustion of available tags (i.e., physical hardware driver + * tags, software scheduler tags, or reserved tags). This trace point + * indicates that the context will be placed into an uninterruptible state + * via sbitmap_prepare_to_wait(). If a tag is not acquired in the final + * lockless retry, the context will yield the CPU via io_schedule() until + * an active request completes and relinquishes its assigned tag. + */ +TRACE_EVENT(block_rq_tag_wait, + + TP_PROTO(struct request_queue *q, struct blk_mq_hw_ctx *hctx, + bool is_sched_tag, unsigned int alloc_flags), + + TP_ARGS(q, hctx, is_sched_tag, alloc_flags), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( u32, hctx_id ) + __field( u32, nr_tags ) + __field( bool, is_sched_tag ) + __field( bool, is_reserved ) + ), + + TP_fast_assign( + __entry->dev = q->disk ? disk_devt(q->disk) : 0; + __entry->hctx_id = hctx->queue_num; + __entry->is_sched_tag = is_sched_tag; + __entry->is_reserved = alloc_flags & BLK_MQ_REQ_RESERVED; + + if (__entry->is_reserved) { + __entry->nr_tags = is_sched_tag ? + hctx->sched_tags->nr_reserved_tags : + hctx->tags->nr_reserved_tags; + } else { + if (is_sched_tag) + __entry->nr_tags = hctx->sched_tags->nr_tags - + hctx->sched_tags->nr_reserved_tags; + else + __entry->nr_tags = hctx->tags->nr_tags - + hctx->tags->nr_reserved_tags; + } + + ), + + TP_printk("%d,%d hctx=%u starved on %s%s tags (depth=%u)", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->hctx_id, + __entry->is_sched_tag ? "scheduler" : "hardware", + __entry->is_reserved ? " reserved" : "", + __entry->nr_tags) +); + +/** + * block_rq_insert - insert block operation request into 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 *rq), + + TP_ARGS(rq) +); + +/** + * block_rq_issue - issue pending block IO request operation to device driver + * @rq: block IO 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 *rq), + + TP_ARGS(rq) +); + +/** + * block_rq_merge - merge request with another one in the elevator + * @rq: block IO operation request + * + * Called when block operation request @rq from queue @q is merged to another + * request queued in the elevator. + */ +DEFINE_EVENT(block_rq, block_rq_merge, + + TP_PROTO(struct request *rq), + + TP_ARGS(rq) +); + +/** + * block_io_start - insert a request for execution + * @rq: block IO operation request + * + * Called when block operation request @rq is queued for execution + */ +DEFINE_EVENT(block_rq, block_io_start, + + TP_PROTO(struct request *rq), + + TP_ARGS(rq) +); + +/** + * block_io_done - block IO operation request completed + * @rq: block IO operation request + * + * Called when block operation request @rq is completed + */ +DEFINE_EVENT(block_rq, block_io_done, + + TP_PROTO(struct request *rq), + + TP_ARGS(rq) +); + +/** + * block_bio_complete - completed all work on the block operation + * @q: queue holding the block operation + * @bio: block operation completed + * + * 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), + + TP_ARGS(q, bio), + + 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 = blk_status_to_errno(bio->bi_status); + blk_fill_rwbs(__entry->rwbs, bio->bi_opf); + ), + + 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, + + TP_PROTO(struct bio *bio), + + TP_ARGS(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); + 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 + * @bio: new block operation to merge + * + * Merging block request @bio to the end of an existing block request. + */ +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 + * @bio: new block operation to merge + * + * Merging block IO operation @bio to the beginning of an existing block request. + */ +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 + * @bio: new block operation + * + * About to place the block IO operation @bio into queue @q. + */ +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 + * @bio: pending block IO operation (can be %NULL) + * + * A request struct has been allocated to handle the block IO operation @bio. + */ +DEFINE_EVENT(block_bio, block_getrq, + TP_PROTO(struct bio *bio), + TP_ARGS(bio) +); + +/** + * blk_zone_append_update_request_bio - update bio sector after zone append + * @rq: the completed request that sets the bio sector + * + * 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 + * + * 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 + * @bio: block operation being split + * @new_sector: The starting sector for the new bio + * + * The bio request @bio 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 limitations such as operation crossing device boundaries in a RAID + * system. + */ +TRACE_EVENT(block_split, + + TP_PROTO(struct bio *bio, unsigned int new_sector), + + TP_ARGS(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); + 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 + * @bio: revised operation + * @dev: original 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 bio *bio, dev_t dev, sector_t from), + + TP_ARGS(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); + ), + + 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 + * @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 *rq, dev_t dev, sector_t from), + + TP_ARGS(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->q->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); + ), + + 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) +); + +/** + * 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) +); + +DECLARE_EVENT_CLASS(block_zwplug, + + TP_PROTO(struct request_queue *q, unsigned int zno, sector_t sector, + unsigned int nr_sectors), + + TP_ARGS(q, zno, sector, nr_sectors), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( unsigned int, zno ) + __field( sector_t, sector ) + __field( unsigned int, nr_sectors ) + ), + + TP_fast_assign( + __entry->dev = disk_devt(q->disk); + __entry->zno = zno; + __entry->sector = sector; + __entry->nr_sectors = nr_sectors; + ), + + TP_printk("%d,%d zone %u, BIO %llu + %u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->zno, + (unsigned long long)__entry->sector, + __entry->nr_sectors) +); + +DEFINE_EVENT(block_zwplug, disk_zone_wplug_add_bio, + + TP_PROTO(struct request_queue *q, unsigned int zno, sector_t sector, + unsigned int nr_sectors), + + TP_ARGS(q, zno, sector, nr_sectors) +); + +DEFINE_EVENT(block_zwplug, blk_zone_wplug_bio, + + TP_PROTO(struct request_queue *q, unsigned int zno, sector_t sector, + unsigned int nr_sectors), + + TP_ARGS(q, zno, sector, nr_sectors) +); + +#endif /* _TRACE_BLOCK_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> + |