X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Finstrumentation%2Fevents%2Fblock.h;fp=include%2Finstrumentation%2Fevents%2Fblock.h;h=3b087d66553cdc176160aac0e97901cad3e43782;hb=4f47ccf08dfac3d5db7553eb8b40bdab19764727;hp=0000000000000000000000000000000000000000;hpb=2bc89292c6ac6030a7498a798671cca921ae61df;p=lttng-modules.git diff --git a/include/instrumentation/events/block.h b/include/instrumentation/events/block.h new file mode 100644 index 00000000..3b087d66 --- /dev/null +++ b/include/instrumentation/events/block.h @@ -0,0 +1,1054 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM block + +#if !defined(LTTNG_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ) +#define LTTNG_TRACE_BLOCK_H + +#include +#include +#include +#include +#include + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) +#include +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */ + +#ifndef _TRACE_BLOCK_DEF_ +#define _TRACE_BLOCK_DEF_ + +enum { + RWBS_FLAG_WRITE = (1 << 0), + RWBS_FLAG_DISCARD = (1 << 1), + RWBS_FLAG_READ = (1 << 2), + RWBS_FLAG_RAHEAD = (1 << 3), + RWBS_FLAG_BARRIER = (1 << 4), + RWBS_FLAG_SYNC = (1 << 5), + RWBS_FLAG_META = (1 << 6), + RWBS_FLAG_SECURE = (1 << 7), + RWBS_FLAG_FLUSH = (1 << 8), + RWBS_FLAG_FUA = (1 << 9), + RWBS_FLAG_PREFLUSH = (1 << 10), +}; + +#endif /* _TRACE_BLOCK_DEF_ */ + +LTTNG_TRACEPOINT_ENUM(block_rq_type, + TP_ENUM_VALUES( + ctf_enum_value("RWBS_FLAG_WRITE", RWBS_FLAG_WRITE) + ctf_enum_value("RWBS_FLAG_DISCARD", RWBS_FLAG_DISCARD) + ctf_enum_value("RWBS_FLAG_READ", RWBS_FLAG_READ) + ctf_enum_value("RWBS_FLAG_RAHEAD", RWBS_FLAG_RAHEAD) + ctf_enum_value("RWBS_FLAG_BARRIER", RWBS_FLAG_BARRIER) + ctf_enum_value("RWBS_FLAG_SYNC", RWBS_FLAG_SYNC) + ctf_enum_value("RWBS_FLAG_META", RWBS_FLAG_META) + ctf_enum_value("RWBS_FLAG_SECURE", RWBS_FLAG_SECURE) + ctf_enum_value("RWBS_FLAG_FLUSH", RWBS_FLAG_FLUSH) + ctf_enum_value("RWBS_FLAG_FUA", RWBS_FLAG_FUA) + ctf_enum_value("RWBS_FLAG_PREFLUSH", RWBS_FLAG_PREFLUSH) + ) +) + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,8,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,73,5,0,0, 4,4,73,6,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,82,6,0,0, 4,4,82,7,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,92,6,0,0, 4,4,92,7,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,103,6,0,0, 4,4,103,7,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,114,94,0,0, 4,4,114,95,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,120,94,0,0, 4,4,120,95,0,0) || \ + LTTNG_SLE_KERNEL_RANGE(4,4,126,94,0,0, 4,5,0,0,0,0)) + +#define lttng_req_op(rq) req_op(rq) +#define lttng_req_rw(rq) ((rq)->cmd_flags) +#define lttng_bio_op(bio) bio_op(bio) +#define lttng_bio_rw(bio) ((bio)->bi_opf) + +#define blk_rwbs_ctf_integer(type, rwbs, op, rw, bytes) \ + ctf_enum(block_rq_type, type, rwbs, \ + (((op) == REQ_OP_WRITE || (op) == REQ_OP_WRITE_SAME) ? RWBS_FLAG_WRITE : \ + ( (op) == REQ_OP_DISCARD ? RWBS_FLAG_DISCARD : \ + ( (op) == REQ_OP_SECURE_ERASE ? (RWBS_FLAG_DISCARD | RWBS_FLAG_SECURE) : \ + ( (op) == REQ_OP_FLUSH ? RWBS_FLAG_FLUSH : \ + ( (op) == REQ_OP_READ ? RWBS_FLAG_READ : \ + ( 0 )))))) \ + | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \ + | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \ + | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \ + | ((rw) & REQ_PREFLUSH ? RWBS_FLAG_PREFLUSH : 0) \ + | ((rw) & REQ_FUA ? RWBS_FLAG_FUA : 0)) + +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)) + +#define lttng_req_op(rq) +#define lttng_req_rw(rq) ((rq)->cmd_flags) +#define lttng_bio_op(bio) +#define lttng_bio_rw(bio) ((bio)->bi_rw) + +#define blk_rwbs_ctf_integer(type, rwbs, op, rw, bytes) \ + ctf_enum(block_rq_type, type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \ + ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \ + ( (bytes) ? RWBS_FLAG_READ : \ + ( 0 )))) \ + | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \ + | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \ + | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \ + | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0) \ + | ((rw) & REQ_FLUSH ? RWBS_FLAG_FLUSH : 0) \ + | ((rw) & REQ_FUA ? RWBS_FLAG_FUA : 0)) + +#else + +#define lttng_req_op(rq) +#define lttng_req_rw(rq) ((rq)->cmd_flags) +#define lttng_bio_op(bio) +#define lttng_bio_rw(bio) ((bio)->bi_rw) + +#define blk_rwbs_ctf_integer(type, rwbs, op, rw, bytes) \ + ctf_enum(block_rq_type, type, rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \ + ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \ + ( (bytes) ? RWBS_FLAG_READ : \ + ( 0 )))) \ + | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \ + | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \ + | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \ + | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0)) + +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) +LTTNG_TRACEPOINT_EVENT_CLASS(block_buffer, + + TP_PROTO(struct buffer_head *bh), + + TP_ARGS(bh), + + TP_FIELDS ( + ctf_integer(dev_t, dev, bh->b_bdev->bd_dev) + ctf_integer(sector_t, sector, bh->b_blocknr) + ctf_integer(size_t, size, bh->b_size) + ) +) + +/** + * block_touch_buffer - mark a buffer accessed + * @bh: buffer_head being touched + * + * Called from touch_buffer(). + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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(). + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_buffer, block_dirty_buffer, + + TP_PROTO(struct buffer_head *bh), + + TP_ARGS(bh) +) +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)) +/* block_rq_with_error event class removed in kernel 4.12 */ +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) +LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq_with_error, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_locvar( + sector_t sector; + unsigned int nr_sector; + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + if (blk_rq_is_scsi(rq)) { + struct scsi_request *scsi_rq = scsi_req(rq); + tp_locvar->sector = 0; + tp_locvar->nr_sector = 0; + tp_locvar->cmd = scsi_rq->cmd; + tp_locvar->cmd_len = scsi_rq->cmd_len; + } else { + tp_locvar->sector = blk_rq_pos(rq); + tp_locvar->nr_sector = blk_rq_sectors(rq); + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, tp_locvar->sector) + ctf_integer(unsigned int, nr_sector, tp_locvar->nr_sector) + ctf_integer(int, errors, rq->errors) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ), + + TP_code_post() +) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */ +LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq_with_error, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_locvar( + sector_t sector; + unsigned int nr_sector; + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + + if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { + tp_locvar->sector = 0; + tp_locvar->nr_sector = 0; + tp_locvar->cmd = rq->cmd; + tp_locvar->cmd_len = rq->cmd_len; + } else { + tp_locvar->sector = blk_rq_pos(rq); + tp_locvar->nr_sector = blk_rq_sectors(rq); + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, tp_locvar->sector) + ctf_integer(unsigned int, nr_sector, tp_locvar->nr_sector) + ctf_integer(int, errors, rq->errors) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ), + + TP_code_post() +) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */ + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)) +/** + * block_rq_abort - abort block operation request + * @q: queue containing the block operation request + * @rq: block IO operation request + * + * Called immediately after pending block IO operation request @rq in + * queue @q is aborted. The fields in the operation request @rq + * can be examined to determine which device and sectors the pending + * operation would access. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_abort, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq) +) +#endif + +/** + * 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. + */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)) +LTTNG_TRACEPOINT_EVENT(block_rq_requeue, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, blk_rq_trace_sector(rq)) + ctf_integer(unsigned int, nr_sector, blk_rq_trace_nr_sectors(rq)) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ) +) +#else +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_requeue, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq) +) +#endif + +/** + * block_rq_complete - block IO operation completed by device driver + * @q: queue containing the block operation request + * @rq: block operations request + * @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. + */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)) +LTTNG_TRACEPOINT_EVENT(block_rq_complete, + + TP_PROTO(struct request *rq, int error, unsigned int nr_bytes), + + TP_ARGS(rq, error, nr_bytes), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, blk_rq_pos(rq)) + ctf_integer(unsigned int, nr_sector, nr_bytes >> 9) + ctf_integer(int, error, error) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), nr_bytes) + ) +) +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) +LTTNG_TRACEPOINT_EVENT_CODE(block_rq_complete, + + TP_PROTO(struct request_queue *q, struct request *rq, + unsigned int nr_bytes), + + TP_ARGS(q, rq, nr_bytes), + + TP_locvar( + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + if (blk_rq_is_scsi(rq)) { + struct scsi_request *scsi_rq = scsi_req(rq); + tp_locvar->cmd = scsi_rq->cmd; + tp_locvar->cmd_len = scsi_rq->cmd_len; + } else { + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, blk_rq_pos(rq)) + ctf_integer(unsigned int, nr_sector, nr_bytes >> 9) + ctf_integer(int, errors, rq->errors) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), nr_bytes) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ), + + TP_code_post() +) +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,5) \ + || LTTNG_KERNEL_RANGE(3,12,21, 3,13,0) \ + || LTTNG_KERNEL_RANGE(3,10,41, 3,11,0) \ + || LTTNG_KERNEL_RANGE(3,4,91, 3,5,0) \ + || LTTNG_KERNEL_RANGE(3,2,58, 3,3,0) \ + || LTTNG_UBUNTU_KERNEL_RANGE(3,13,11,28, 3,14,0,0) \ + || LTTNG_RHEL_KERNEL_RANGE(3,10,0,229,0,0, 3,11,0,0,0,0)) + +LTTNG_TRACEPOINT_EVENT_CODE(block_rq_complete, + + TP_PROTO(struct request_queue *q, struct request *rq, + unsigned int nr_bytes), + + TP_ARGS(q, rq, nr_bytes), + + TP_locvar( + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { + tp_locvar->cmd = rq->cmd; + tp_locvar->cmd_len = rq->cmd_len; + } else { + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, blk_rq_pos(rq)) + ctf_integer(unsigned int, nr_sector, nr_bytes >> 9) + ctf_integer(int, errors, rq->errors) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), nr_bytes) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ), + + TP_code_post() +) + +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */ + +/** + * block_rq_complete - block IO operation completed by device driver + * @q: queue containing the block operation request + * @rq: block operations request + * + * 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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_complete, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq) +) + +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */ + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0)) +LTTNG_TRACEPOINT_EVENT_CLASS(block_rq, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, blk_rq_trace_sector(rq)) + ctf_integer(unsigned int, nr_sector, blk_rq_trace_nr_sectors(rq)) + ctf_integer(unsigned int, bytes, blk_rq_bytes(rq)) + ctf_integer(pid_t, tid, current->pid) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) +#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) +LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_locvar( + sector_t sector; + unsigned int nr_sector; + unsigned int bytes; + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + if (blk_rq_is_scsi(rq)) { + struct scsi_request *scsi_rq = scsi_req(rq); + tp_locvar->sector = 0; + tp_locvar->nr_sector = 0; + tp_locvar->bytes = scsi_rq->resid_len; + tp_locvar->cmd = scsi_rq->cmd; + tp_locvar->cmd_len = scsi_rq->cmd_len; + } else { + tp_locvar->sector = blk_rq_pos(rq); + tp_locvar->nr_sector = blk_rq_sectors(rq); + tp_locvar->bytes = 0; + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, tp_locvar->sector) + ctf_integer(unsigned int, nr_sector, tp_locvar->nr_sector) + ctf_integer(unsigned int, bytes, tp_locvar->bytes) + ctf_integer(pid_t, tid, current->pid) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ), + + TP_code_post() +) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */ +LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq), + + TP_locvar( + sector_t sector; + unsigned int nr_sector; + unsigned int bytes; + unsigned char *cmd; + size_t cmd_len; + ), + + TP_code_pre( + if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { + tp_locvar->sector = 0; + tp_locvar->nr_sector = 0; + tp_locvar->bytes = blk_rq_bytes(rq); + tp_locvar->cmd = rq->cmd; + tp_locvar->cmd_len = rq->cmd_len; + } else { + tp_locvar->sector = blk_rq_pos(rq); + tp_locvar->nr_sector = blk_rq_sectors(rq); + tp_locvar->bytes = 0; + tp_locvar->cmd = NULL; + tp_locvar->cmd_len = 0; + } + ), + + TP_FIELDS( + ctf_integer(dev_t, dev, + rq->rq_disk ? disk_devt(rq->rq_disk) : 0) + ctf_integer(sector_t, sector, tp_locvar->sector) + ctf_integer(unsigned int, nr_sector, tp_locvar->nr_sector) + ctf_integer(unsigned int, bytes, tp_locvar->bytes) + ctf_integer(pid_t, tid, current->pid) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ctf_sequence_hex(unsigned char, cmd, + tp_locvar->cmd, size_t, tp_locvar->cmd_len) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ), + + TP_code_post() +) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */ + +/** + * 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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT(block_bio_bounce, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, bio), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + ctf_integer(unsigned int, nr_sector, bio_sectors(bio)) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * 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. + */ +LTTNG_TRACEPOINT_EVENT(block_bio_complete, + + TP_PROTO(struct request_queue *q, struct bio *bio, int error), + + TP_ARGS(q, bio, error), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + ctf_integer(unsigned int, nr_sector, bio_sectors(bio)) + ctf_integer(int, error, error) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + ctf_integer(int, error, error) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ) +) + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) +LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge, + + TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio), + + TP_ARGS(q, rq, bio), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + ctf_integer(unsigned int, nr_sector, bio_sectors(bio)) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * block_bio_backmerge - merging block operation to the end of an existing operation + * @q: queue holding operation + * @bio: new block operation to merge + * + * Merging block request @bio to the end of an existing block request + * in queue @q. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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 + * @bio: new block operation to merge + * + * Merging block IO operation @bio to the beginning of an existing block + * operation in queue @q. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT(block_bio_queue, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, bio), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + ctf_integer(unsigned int, nr_sector, bio_sectors(bio)) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) +#else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */ +LTTNG_TRACEPOINT_EVENT_CLASS(block_bio, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, bio), + + TP_FIELDS( + ctf_integer(dev_t, dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0) + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * block_bio_backmerge - merging block operation to the end of an existing operation + * @q: queue holding operation + * @bio: new block operation to merge + * + * Merging block request @bio to the end of an existing block request + * in queue @q. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_backmerge, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, bio) +) + +/** + * block_bio_frontmerge - merging block operation to the beginning of an existing operation + * @q: queue holding operation + * @bio: new block operation to merge + * + * Merging block IO operation @bio to the beginning of an existing block + * operation in queue @q. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_frontmerge, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, 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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_queue, + + TP_PROTO(struct request_queue *q, struct bio *bio), + + TP_ARGS(q, bio) +) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */ + +LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq, + + TP_PROTO(struct request_queue *q, struct bio *bio, int rw), + + TP_ARGS(q, bio, rw), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio ? bio_dev(bio) : 0) +#else + ctf_integer(dev_t, dev, bio ? bio->bi_bdev->bd_dev : 0) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio ? bio->bi_iter.bi_sector : 0) + ctf_integer(unsigned int, nr_sector, + bio ? bio_sectors(bio) : 0) + blk_rwbs_ctf_integer(unsigned int, rwbs, + bio ? lttng_bio_op(bio) : 0, + bio ? lttng_bio_rw(bio) : 0, + bio ? bio->bi_iter.bi_size : 0) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio ? bio->bi_sector : 0) + ctf_integer(unsigned int, nr_sector, + bio ? bio->bi_size >> 9 : 0) + blk_rwbs_ctf_integer(unsigned int, rwbs, + bio ? lttng_bio_op(bio) : 0, + bio ? lttng_bio_rw(bio) : 0, + bio ? bio->bi_size : 0) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * 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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT(block_plug, + + TP_PROTO(struct request_queue *q), + + TP_ARGS(q), + + TP_FIELDS( + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +LTTNG_TRACEPOINT_EVENT_CLASS(block_unplug, + + TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit), + + TP_ARGS(q, depth, explicit), + + TP_FIELDS( + ctf_integer(int, nr_rq, depth) + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * 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. + */ +LTTNG_TRACEPOINT_EVENT_INSTANCE(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. + */ +LTTNG_TRACEPOINT_EVENT(block_split, + + TP_PROTO(struct request_queue *q, struct bio *bio, + unsigned int new_sector), + + TP_ARGS(q, bio, new_sector), + + TP_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, new_sector, new_sector) + ctf_integer(pid_t, tid, current->pid) + ctf_array_text(char, comm, current->comm, TASK_COMM_LEN) + ) +) + +/** + * 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. + */ +LTTNG_TRACEPOINT_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_FIELDS( +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)) + ctf_integer(dev_t, dev, bio_dev(bio)) +#else + ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev) +#endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) + ctf_integer(sector_t, sector, bio->bi_iter.bi_sector) + ctf_integer(unsigned int, nr_sector, bio_sectors(bio)) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), + bio->bi_iter.bi_size) +#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(sector_t, sector, bio->bi_sector) + ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size) +#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */ + ctf_integer(dev_t, old_dev, dev) + ctf_integer(sector_t, old_sector, from) + ) +) + +/** + * 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. + */ +LTTNG_TRACEPOINT_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_FIELDS( + ctf_integer(dev_t, dev, disk_devt(rq->rq_disk)) + ctf_integer(sector_t, sector, blk_rq_pos(rq)) + ctf_integer(unsigned int, nr_sector, blk_rq_sectors(rq)) + ctf_integer(dev_t, old_dev, dev) + ctf_integer(sector_t, old_sector, from) + blk_rwbs_ctf_integer(unsigned int, rwbs, + lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq)) + ) +) + +#undef __print_rwbs_flags +#undef blk_fill_rwbs + +#endif /* LTTNG_TRACE_BLOCK_H */ + +/* This part must be outside protection */ +#include