467 lines
11 KiB
C
467 lines
11 KiB
C
/* 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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