688 lines
17 KiB
C
688 lines
17 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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#include <uapi/linux/io_uring.h>
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#include <linux/io_uring_types.h>
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#include <linux/io_uring.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 0x%x",
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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 successfully
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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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* @ret: return code
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*
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* Allows to trace fixed files/buffers, 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, long ret),
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TP_ARGS(ctx, opcode, nr_files, nr_bufs, 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( 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->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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"ret %ld",
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__entry->ctx, __entry->opcode, __entry->nr_files,
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__entry->nr_bufs, __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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* @req: pointer to a submitted request
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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(struct io_kiocb *req, int fd),
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TP_ARGS(req, fd),
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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( u64, user_data )
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__field( int, fd )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->fd = fd;
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),
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TP_printk("ring %p, req %p, user_data 0x%llx, fd %d",
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__entry->ctx, __entry->req, __entry->user_data, __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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* @req: pointer to a submitted request
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* @rw: type of workqueue, hashed or normal
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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(struct io_kiocb *req, int rw),
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TP_ARGS(req, rw),
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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( u64, user_data )
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__field( u8, opcode )
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__field( unsigned int, flags )
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__field( struct io_wq_work *, work )
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__field( int, rw )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->flags = req->flags;
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__entry->opcode = req->opcode;
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__entry->work = &req->work;
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__entry->rw = rw;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, flags 0x%x, %s queue, work %p",
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__entry->ctx, __entry->req, __entry->user_data,
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__get_str(op_str),
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__entry->flags, __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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* @req: pointer to a deferred 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(struct io_kiocb *req),
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TP_ARGS(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( unsigned long long, data )
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__field( u8, opcode )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->data = req->cqe.user_data;
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__entry->opcode = req->opcode;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s",
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__entry->ctx, __entry->req, __entry->data,
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__get_str(op_str))
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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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* @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(struct io_kiocb *req, struct io_kiocb *target_req),
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TP_ARGS(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 = req->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(struct io_kiocb *req, struct io_kiocb *link),
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TP_ARGS(req, link),
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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, user_data )
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__field( u8, opcode )
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__field( void *, link )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->opcode = req->opcode;
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__entry->link = link;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, link %p",
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__entry->ctx, __entry->req, __entry->user_data,
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__get_str(op_str), __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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* @req: pointer to a submitted request
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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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* @cflags: completion flags
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* @extra1: extra 64-bit data for CQE32
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* @extra2: extra 64-bit data for CQE32
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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, void *req, u64 user_data, int res, unsigned cflags,
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u64 extra1, u64 extra2),
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TP_ARGS(ctx, req, user_data, res, cflags, extra1, extra2),
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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( u64, user_data )
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__field( int, res )
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__field( unsigned, cflags )
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__field( u64, extra1 )
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__field( u64, extra2 )
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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->user_data = user_data;
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__entry->res = res;
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__entry->cflags = cflags;
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__entry->extra1 = extra1;
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__entry->extra2 = extra2;
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),
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TP_printk("ring %p, req %p, user_data 0x%llx, result %d, cflags 0x%x "
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"extra1 %llu extra2 %llu ",
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__entry->ctx, __entry->req,
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__entry->user_data,
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__entry->res, __entry->cflags,
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(unsigned long long) __entry->extra1,
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(unsigned long long) __entry->extra2)
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);
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/**
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* io_uring_submit_req - called before submitting a request
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*
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* @req: pointer to a submitted request
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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_req,
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TP_PROTO(struct io_kiocb *req),
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TP_ARGS(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( unsigned long long, user_data )
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__field( u8, opcode )
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__field( u32, flags )
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__field( bool, sq_thread )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->opcode = req->opcode;
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__entry->flags = req->flags;
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__entry->sq_thread = req->ctx->flags & IORING_SETUP_SQPOLL;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, flags 0x%x, "
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"sq_thread %d", __entry->ctx, __entry->req,
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__entry->user_data, __get_str(op_str),
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__entry->flags, __entry->sq_thread)
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);
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/*
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* io_uring_poll_arm - called after arming a poll wait if successful
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*
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* @req: pointer to the armed request
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* @mask: request poll events mask
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* @events: registered events of interest
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*
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* Allows to track which fds are waiting for and what are the events of
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* interest.
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*/
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TRACE_EVENT(io_uring_poll_arm,
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TP_PROTO(struct io_kiocb *req, int mask, int events),
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TP_ARGS(req, mask, events),
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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, user_data )
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__field( u8, opcode )
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__field( int, mask )
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__field( int, events )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->opcode = req->opcode;
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__entry->mask = mask;
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__entry->events = events;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask 0x%x, events 0x%x",
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__entry->ctx, __entry->req, __entry->user_data,
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__get_str(op_str),
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__entry->mask, __entry->events)
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);
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/*
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* io_uring_task_add - called after adding a task
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*
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* @req: pointer to request
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* @mask: request poll events mask
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*
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*/
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TRACE_EVENT(io_uring_task_add,
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TP_PROTO(struct io_kiocb *req, int mask),
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TP_ARGS(req, mask),
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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, user_data )
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__field( u8, opcode )
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__field( int, mask )
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__string( op_str, io_uring_get_opcode(req->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = req->cqe.user_data;
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__entry->opcode = req->opcode;
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__entry->mask = mask;
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__assign_str(op_str, io_uring_get_opcode(req->opcode));
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),
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TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask %x",
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__entry->ctx, __entry->req, __entry->user_data,
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__get_str(op_str),
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__entry->mask)
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);
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/*
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* io_uring_req_failed - called when an sqe is errored dring submission
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*
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* @sqe: pointer to the io_uring_sqe that failed
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* @req: pointer to request
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* @error: error it failed with
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*
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* Allows easier diagnosing of malformed requests in production systems.
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*/
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TRACE_EVENT(io_uring_req_failed,
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TP_PROTO(const struct io_uring_sqe *sqe, struct io_kiocb *req, int error),
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TP_ARGS(sqe, req, error),
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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, user_data )
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__field( u8, opcode )
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__field( u8, flags )
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__field( u8, ioprio )
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__field( u64, off )
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__field( u64, addr )
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__field( u32, len )
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__field( u32, op_flags )
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__field( u16, buf_index )
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__field( u16, personality )
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__field( u32, file_index )
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__field( u64, pad1 )
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__field( u64, addr3 )
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__field( int, error )
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__string( op_str, io_uring_get_opcode(sqe->opcode) )
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),
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TP_fast_assign(
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__entry->ctx = req->ctx;
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__entry->req = req;
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__entry->user_data = sqe->user_data;
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|
__entry->opcode = sqe->opcode;
|
|
__entry->flags = sqe->flags;
|
|
__entry->ioprio = sqe->ioprio;
|
|
__entry->off = sqe->off;
|
|
__entry->addr = sqe->addr;
|
|
__entry->len = sqe->len;
|
|
__entry->op_flags = sqe->poll32_events;
|
|
__entry->buf_index = sqe->buf_index;
|
|
__entry->personality = sqe->personality;
|
|
__entry->file_index = sqe->file_index;
|
|
__entry->pad1 = sqe->__pad2[0];
|
|
__entry->addr3 = sqe->addr3;
|
|
__entry->error = error;
|
|
|
|
__assign_str(op_str, io_uring_get_opcode(sqe->opcode));
|
|
),
|
|
|
|
TP_printk("ring %p, req %p, user_data 0x%llx, "
|
|
"opcode %s, flags 0x%x, prio=%d, off=%llu, addr=%llu, "
|
|
"len=%u, rw_flags=0x%x, buf_index=%d, "
|
|
"personality=%d, file_index=%d, pad=0x%llx, addr3=%llx, "
|
|
"error=%d",
|
|
__entry->ctx, __entry->req, __entry->user_data,
|
|
__get_str(op_str),
|
|
__entry->flags, __entry->ioprio,
|
|
(unsigned long long)__entry->off,
|
|
(unsigned long long) __entry->addr, __entry->len,
|
|
__entry->op_flags,
|
|
__entry->buf_index, __entry->personality, __entry->file_index,
|
|
(unsigned long long) __entry->pad1,
|
|
(unsigned long long) __entry->addr3, __entry->error)
|
|
);
|
|
|
|
|
|
/*
|
|
* io_uring_cqe_overflow - a CQE overflowed
|
|
*
|
|
* @ctx: pointer to a ring context structure
|
|
* @user_data: user data associated with the request
|
|
* @res: CQE result
|
|
* @cflags: CQE flags
|
|
* @ocqe: pointer to the overflow cqe (if available)
|
|
*
|
|
*/
|
|
TRACE_EVENT(io_uring_cqe_overflow,
|
|
|
|
TP_PROTO(void *ctx, unsigned long long user_data, s32 res, u32 cflags,
|
|
void *ocqe),
|
|
|
|
TP_ARGS(ctx, user_data, res, cflags, ocqe),
|
|
|
|
TP_STRUCT__entry (
|
|
__field( void *, ctx )
|
|
__field( unsigned long long, user_data )
|
|
__field( s32, res )
|
|
__field( u32, cflags )
|
|
__field( void *, ocqe )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ctx = ctx;
|
|
__entry->user_data = user_data;
|
|
__entry->res = res;
|
|
__entry->cflags = cflags;
|
|
__entry->ocqe = ocqe;
|
|
),
|
|
|
|
TP_printk("ring %p, user_data 0x%llx, res %d, cflags 0x%x, "
|
|
"overflow_cqe %p",
|
|
__entry->ctx, __entry->user_data, __entry->res,
|
|
__entry->cflags, __entry->ocqe)
|
|
);
|
|
|
|
/*
|
|
* io_uring_task_work_run - ran task work
|
|
*
|
|
* @tctx: pointer to a io_uring_task
|
|
* @count: how many functions it ran
|
|
* @loops: how many loops it ran
|
|
*
|
|
*/
|
|
TRACE_EVENT(io_uring_task_work_run,
|
|
|
|
TP_PROTO(void *tctx, unsigned int count, unsigned int loops),
|
|
|
|
TP_ARGS(tctx, count, loops),
|
|
|
|
TP_STRUCT__entry (
|
|
__field( void *, tctx )
|
|
__field( unsigned int, count )
|
|
__field( unsigned int, loops )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->tctx = tctx;
|
|
__entry->count = count;
|
|
__entry->loops = loops;
|
|
),
|
|
|
|
TP_printk("tctx %p, count %u, loops %u",
|
|
__entry->tctx, __entry->count, __entry->loops)
|
|
);
|
|
|
|
TRACE_EVENT(io_uring_short_write,
|
|
|
|
TP_PROTO(void *ctx, u64 fpos, u64 wanted, u64 got),
|
|
|
|
TP_ARGS(ctx, fpos, wanted, got),
|
|
|
|
TP_STRUCT__entry(
|
|
__field(void *, ctx)
|
|
__field(u64, fpos)
|
|
__field(u64, wanted)
|
|
__field(u64, got)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ctx = ctx;
|
|
__entry->fpos = fpos;
|
|
__entry->wanted = wanted;
|
|
__entry->got = got;
|
|
),
|
|
|
|
TP_printk("ring %p, fpos %lld, wanted %lld, got %lld",
|
|
__entry->ctx, __entry->fpos,
|
|
__entry->wanted, __entry->got)
|
|
);
|
|
|
|
/*
|
|
* io_uring_local_work_run - ran ring local task work
|
|
*
|
|
* @tctx: pointer to a io_uring_ctx
|
|
* @count: how many functions it ran
|
|
* @loops: how many loops it ran
|
|
*
|
|
*/
|
|
TRACE_EVENT(io_uring_local_work_run,
|
|
|
|
TP_PROTO(void *ctx, int count, unsigned int loops),
|
|
|
|
TP_ARGS(ctx, count, loops),
|
|
|
|
TP_STRUCT__entry (
|
|
__field(void *, ctx )
|
|
__field(int, count )
|
|
__field(unsigned int, loops )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ctx = ctx;
|
|
__entry->count = count;
|
|
__entry->loops = loops;
|
|
),
|
|
|
|
TP_printk("ring %p, count %d, loops %u", __entry->ctx, __entry->count, __entry->loops)
|
|
);
|
|
|
|
#endif /* _TRACE_IO_URING_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|