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466 lines
11 KiB
466 lines
11 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#undef TRACE_SYSTEM |
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#define TRACE_SYSTEM io_uring |
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#if !defined(_TRACE_IO_URING_H) || defined(TRACE_HEADER_MULTI_READ) |
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#define _TRACE_IO_URING_H |
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#include <linux/tracepoint.h> |
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struct io_wq_work; |
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/** |
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* io_uring_create - called after a new io_uring context was prepared |
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* |
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* @fd: corresponding file descriptor |
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* @ctx: pointer to a ring context structure |
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* @sq_entries: actual SQ size |
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* @cq_entries: actual CQ size |
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* @flags: SQ ring flags, provided to io_uring_setup(2) |
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* |
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* Allows to trace io_uring creation and provide pointer to a context, that can |
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* be used later to find correlated events. |
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*/ |
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TRACE_EVENT(io_uring_create, |
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TP_PROTO(int fd, void *ctx, u32 sq_entries, u32 cq_entries, u32 flags), |
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TP_ARGS(fd, ctx, sq_entries, cq_entries, flags), |
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TP_STRUCT__entry ( |
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__field( int, fd ) |
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__field( void *, ctx ) |
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__field( u32, sq_entries ) |
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__field( u32, cq_entries ) |
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__field( u32, flags ) |
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), |
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TP_fast_assign( |
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__entry->fd = fd; |
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__entry->ctx = ctx; |
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__entry->sq_entries = sq_entries; |
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__entry->cq_entries = cq_entries; |
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__entry->flags = flags; |
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), |
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TP_printk("ring %p, fd %d sq size %d, cq size %d, flags %d", |
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__entry->ctx, __entry->fd, __entry->sq_entries, |
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__entry->cq_entries, __entry->flags) |
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); |
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/** |
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* io_uring_register - called after a buffer/file/eventfd was succesfully |
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* registered for a ring |
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* |
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* @ctx: pointer to a ring context structure |
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* @opcode: describes which operation to perform |
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* @nr_user_files: number of registered files |
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* @nr_user_bufs: number of registered buffers |
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* @cq_ev_fd: whether eventfs registered or not |
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* @ret: return code |
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* |
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* Allows to trace fixed files/buffers/eventfds, that could be registered to |
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* avoid an overhead of getting references to them for every operation. This |
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* event, together with io_uring_file_get, can provide a full picture of how |
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* much overhead one can reduce via fixing. |
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*/ |
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TRACE_EVENT(io_uring_register, |
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TP_PROTO(void *ctx, unsigned opcode, unsigned nr_files, |
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unsigned nr_bufs, bool eventfd, long ret), |
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TP_ARGS(ctx, opcode, nr_files, nr_bufs, eventfd, ret), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( unsigned, opcode ) |
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__field( unsigned, nr_files ) |
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__field( unsigned, nr_bufs ) |
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__field( bool, eventfd ) |
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__field( long, ret ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->nr_files = nr_files; |
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__entry->nr_bufs = nr_bufs; |
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__entry->eventfd = eventfd; |
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__entry->ret = ret; |
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), |
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TP_printk("ring %p, opcode %d, nr_user_files %d, nr_user_bufs %d, " |
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"eventfd %d, ret %ld", |
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__entry->ctx, __entry->opcode, __entry->nr_files, |
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__entry->nr_bufs, __entry->eventfd, __entry->ret) |
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); |
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/** |
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* io_uring_file_get - called before getting references to an SQE file |
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* |
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* @ctx: pointer to a ring context structure |
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* @fd: SQE file descriptor |
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* |
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* Allows to trace out how often an SQE file reference is obtained, which can |
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* help figuring out if it makes sense to use fixed files, or check that fixed |
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* files are used correctly. |
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*/ |
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TRACE_EVENT(io_uring_file_get, |
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TP_PROTO(void *ctx, int fd), |
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TP_ARGS(ctx, fd), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( int, fd ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->fd = fd; |
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), |
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TP_printk("ring %p, fd %d", __entry->ctx, __entry->fd) |
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); |
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/** |
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* io_uring_queue_async_work - called before submitting a new async work |
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* |
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* @ctx: pointer to a ring context structure |
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* @hashed: type of workqueue, hashed or normal |
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* @req: pointer to a submitted request |
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* @work: pointer to a submitted io_wq_work |
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* |
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* Allows to trace asynchronous work submission. |
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*/ |
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TRACE_EVENT(io_uring_queue_async_work, |
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TP_PROTO(void *ctx, int rw, void * req, struct io_wq_work *work, |
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unsigned int flags), |
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TP_ARGS(ctx, rw, req, work, flags), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( int, rw ) |
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__field( void *, req ) |
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__field( struct io_wq_work *, work ) |
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__field( unsigned int, flags ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->rw = rw; |
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__entry->req = req; |
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__entry->work = work; |
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__entry->flags = flags; |
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), |
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TP_printk("ring %p, request %p, flags %d, %s queue, work %p", |
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__entry->ctx, __entry->req, __entry->flags, |
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__entry->rw ? "hashed" : "normal", __entry->work) |
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); |
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/** |
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* io_uring_defer - called when an io_uring request is deferred |
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* |
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* @ctx: pointer to a ring context structure |
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* @req: pointer to a deferred request |
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* @user_data: user data associated with the request |
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* |
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* Allows to track deferred requests, to get an insight about what requests are |
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* not started immediately. |
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*/ |
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TRACE_EVENT(io_uring_defer, |
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TP_PROTO(void *ctx, void *req, unsigned long long user_data), |
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TP_ARGS(ctx, req, user_data), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( void *, req ) |
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__field( unsigned long long, data ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->req = req; |
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__entry->data = user_data; |
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), |
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TP_printk("ring %p, request %p user_data %llu", __entry->ctx, |
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__entry->req, __entry->data) |
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); |
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/** |
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* io_uring_link - called before the io_uring request added into link_list of |
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* another request |
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* |
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* @ctx: pointer to a ring context structure |
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* @req: pointer to a linked request |
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* @target_req: pointer to a previous request, that would contain @req |
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* |
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* Allows to track linked requests, to understand dependencies between requests |
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* and how does it influence their execution flow. |
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*/ |
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TRACE_EVENT(io_uring_link, |
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TP_PROTO(void *ctx, void *req, void *target_req), |
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TP_ARGS(ctx, req, target_req), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( void *, req ) |
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__field( void *, target_req ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->req = req; |
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__entry->target_req = target_req; |
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), |
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TP_printk("ring %p, request %p linked after %p", |
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__entry->ctx, __entry->req, __entry->target_req) |
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); |
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/** |
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* io_uring_cqring_wait - called before start waiting for an available CQE |
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* |
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* @ctx: pointer to a ring context structure |
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* @min_events: minimal number of events to wait for |
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* |
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* Allows to track waiting for CQE, so that we can e.g. troubleshoot |
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* situations, when an application wants to wait for an event, that never |
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* comes. |
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*/ |
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TRACE_EVENT(io_uring_cqring_wait, |
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TP_PROTO(void *ctx, int min_events), |
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TP_ARGS(ctx, min_events), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( int, min_events ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->min_events = min_events; |
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), |
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TP_printk("ring %p, min_events %d", __entry->ctx, __entry->min_events) |
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); |
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/** |
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* io_uring_fail_link - called before failing a linked request |
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* |
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* @req: request, which links were cancelled |
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* @link: cancelled link |
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* |
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* Allows to track linked requests cancellation, to see not only that some work |
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* was cancelled, but also which request was the reason. |
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*/ |
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TRACE_EVENT(io_uring_fail_link, |
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TP_PROTO(void *req, void *link), |
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TP_ARGS(req, link), |
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TP_STRUCT__entry ( |
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__field( void *, req ) |
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__field( void *, link ) |
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), |
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TP_fast_assign( |
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__entry->req = req; |
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__entry->link = link; |
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), |
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TP_printk("request %p, link %p", __entry->req, __entry->link) |
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); |
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/** |
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* io_uring_complete - called when completing an SQE |
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* |
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* @ctx: pointer to a ring context structure |
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* @user_data: user data associated with the request |
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* @res: result of the request |
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* |
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*/ |
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TRACE_EVENT(io_uring_complete, |
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TP_PROTO(void *ctx, u64 user_data, long res), |
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TP_ARGS(ctx, user_data, res), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u64, user_data ) |
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__field( long, res ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->user_data = user_data; |
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__entry->res = res; |
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), |
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TP_printk("ring %p, user_data 0x%llx, result %ld", |
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__entry->ctx, (unsigned long long)__entry->user_data, |
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__entry->res) |
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); |
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/** |
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* io_uring_submit_sqe - called before submitting one SQE |
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* |
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* @ctx: pointer to a ring context structure |
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* @opcode: opcode of request |
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* @user_data: user data associated with the request |
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* @force_nonblock: whether a context blocking or not |
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* @sq_thread: true if sq_thread has submitted this SQE |
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* |
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* Allows to track SQE submitting, to understand what was the source of it, SQ |
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* thread or io_uring_enter call. |
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*/ |
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TRACE_EVENT(io_uring_submit_sqe, |
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TP_PROTO(void *ctx, u8 opcode, u64 user_data, bool force_nonblock, |
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bool sq_thread), |
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TP_ARGS(ctx, opcode, user_data, force_nonblock, sq_thread), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u8, opcode ) |
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__field( u64, user_data ) |
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__field( bool, force_nonblock ) |
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__field( bool, sq_thread ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->user_data = user_data; |
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__entry->force_nonblock = force_nonblock; |
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__entry->sq_thread = sq_thread; |
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), |
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TP_printk("ring %p, op %d, data 0x%llx, non block %d, sq_thread %d", |
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__entry->ctx, __entry->opcode, |
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(unsigned long long) __entry->user_data, |
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__entry->force_nonblock, __entry->sq_thread) |
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); |
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TRACE_EVENT(io_uring_poll_arm, |
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TP_PROTO(void *ctx, u8 opcode, u64 user_data, int mask, int events), |
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TP_ARGS(ctx, opcode, user_data, mask, events), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u8, opcode ) |
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__field( u64, user_data ) |
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__field( int, mask ) |
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__field( int, events ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->user_data = user_data; |
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__entry->mask = mask; |
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__entry->events = events; |
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), |
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TP_printk("ring %p, op %d, data 0x%llx, mask 0x%x, events 0x%x", |
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__entry->ctx, __entry->opcode, |
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(unsigned long long) __entry->user_data, |
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__entry->mask, __entry->events) |
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); |
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TRACE_EVENT(io_uring_poll_wake, |
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TP_PROTO(void *ctx, u8 opcode, u64 user_data, int mask), |
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TP_ARGS(ctx, opcode, user_data, mask), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u8, opcode ) |
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__field( u64, user_data ) |
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__field( int, mask ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->user_data = user_data; |
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__entry->mask = mask; |
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), |
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TP_printk("ring %p, op %d, data 0x%llx, mask 0x%x", |
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__entry->ctx, __entry->opcode, |
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(unsigned long long) __entry->user_data, |
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__entry->mask) |
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); |
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TRACE_EVENT(io_uring_task_add, |
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TP_PROTO(void *ctx, u8 opcode, u64 user_data, int mask), |
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TP_ARGS(ctx, opcode, user_data, mask), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u8, opcode ) |
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__field( u64, user_data ) |
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__field( int, mask ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->user_data = user_data; |
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__entry->mask = mask; |
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), |
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TP_printk("ring %p, op %d, data 0x%llx, mask %x", |
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__entry->ctx, __entry->opcode, |
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(unsigned long long) __entry->user_data, |
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__entry->mask) |
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); |
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TRACE_EVENT(io_uring_task_run, |
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TP_PROTO(void *ctx, u8 opcode, u64 user_data), |
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TP_ARGS(ctx, opcode, user_data), |
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TP_STRUCT__entry ( |
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__field( void *, ctx ) |
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__field( u8, opcode ) |
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__field( u64, user_data ) |
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), |
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TP_fast_assign( |
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__entry->ctx = ctx; |
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__entry->opcode = opcode; |
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__entry->user_data = user_data; |
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), |
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TP_printk("ring %p, op %d, data 0x%llx", |
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__entry->ctx, __entry->opcode, |
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(unsigned long long) __entry->user_data) |
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); |
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#endif /* _TRACE_IO_URING_H */ |
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/* This part must be outside protection */ |
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#include <trace/define_trace.h>
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