Viewing file:  io_uring.h (16.88 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM io_uring
#if !defined(_TRACE_IO_URING_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_IO_URING_H
#include <linux/tracepoint.h>
#include <uapi/linux/io_uring.h>
#include <linux/io_uring_types.h>
#include <linux/io_uring.h>
struct io_wq_work;
/**
* io_uring_create - called after a new io_uring context was prepared
*
* @fd: corresponding file descriptor
* @ctx: pointer to a ring context structure
* @sq_entries: actual SQ size
* @cq_entries: actual CQ size
* @flags: SQ ring flags, provided to io_uring_setup(2)
*
* Allows to trace io_uring creation and provide pointer to a context, that can
* be used later to find correlated events.
*/
TRACE_EVENT(io_uring_create,
TP_PROTO(int fd, void *ctx, u32 sq_entries, u32 cq_entries, u32 flags),
TP_ARGS(fd, ctx, sq_entries, cq_entries, flags),
TP_STRUCT__entry (
__field( int, fd )
__field( void *, ctx )
__field( u32, sq_entries )
__field( u32, cq_entries )
__field( u32, flags )
),
TP_fast_assign(
__entry->fd = fd;
__entry->ctx = ctx;
__entry->sq_entries = sq_entries;
__entry->cq_entries = cq_entries;
__entry->flags = flags;
),
TP_printk("ring %p, fd %d sq size %d, cq size %d, flags 0x%x",
__entry->ctx, __entry->fd, __entry->sq_entries,
__entry->cq_entries, __entry->flags)
);
/**
* io_uring_register - called after a buffer/file/eventfd was successfully
* registered for a ring
*
* @ctx: pointer to a ring context structure
* @opcode: describes which operation to perform
* @nr_user_files: number of registered files
* @nr_user_bufs: number of registered buffers
* @ret: return code
*
* Allows to trace fixed files/buffers, that could be registered to
* avoid an overhead of getting references to them for every operation. This
* event, together with io_uring_file_get, can provide a full picture of how
* much overhead one can reduce via fixing.
*/
TRACE_EVENT(io_uring_register,
TP_PROTO(void *ctx, unsigned opcode, unsigned nr_files,
unsigned nr_bufs, long ret),
TP_ARGS(ctx, opcode, nr_files, nr_bufs, ret),
TP_STRUCT__entry (
__field( void *, ctx )
__field( unsigned, opcode )
__field( unsigned, nr_files)
__field( unsigned, nr_bufs )
__field( long, ret )
),
TP_fast_assign(
__entry->ctx = ctx;
__entry->opcode = opcode;
__entry->nr_files = nr_files;
__entry->nr_bufs = nr_bufs;
__entry->ret = ret;
),
TP_printk("ring %p, opcode %d, nr_user_files %d, nr_user_bufs %d, "
"ret %ld",
__entry->ctx, __entry->opcode, __entry->nr_files,
__entry->nr_bufs, __entry->ret)
);
/**
* io_uring_file_get - called before getting references to an SQE file
*
* @req: pointer to a submitted request
* @fd: SQE file descriptor
*
* Allows to trace out how often an SQE file reference is obtained, which can
* help figuring out if it makes sense to use fixed files, or check that fixed
* files are used correctly.
*/
TRACE_EVENT(io_uring_file_get,
TP_PROTO(struct io_kiocb *req, int fd),
TP_ARGS(req, fd),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( u64, user_data )
__field( int, fd )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->fd = fd;
),
TP_printk("ring %p, req %p, user_data 0x%llx, fd %d",
__entry->ctx, __entry->req, __entry->user_data, __entry->fd)
);
/**
* io_uring_queue_async_work - called before submitting a new async work
*
* @req: pointer to a submitted request
* @rw: type of workqueue, hashed or normal
*
* Allows to trace asynchronous work submission.
*/
TRACE_EVENT(io_uring_queue_async_work,
TP_PROTO(struct io_kiocb *req, int rw),
TP_ARGS(req, rw),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( u64, user_data )
__field( u8, opcode )
__field( unsigned int, flags )
__field( struct io_wq_work *, work )
__field( int, rw )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->flags = req->flags;
__entry->opcode = req->opcode;
__entry->work = &req->work;
__entry->rw = rw;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, flags 0x%x, %s queue, work %p",
__entry->ctx, __entry->req, __entry->user_data,
__get_str(op_str),
__entry->flags, __entry->rw ? "hashed" : "normal", __entry->work)
);
/**
* io_uring_defer - called when an io_uring request is deferred
*
* @req: pointer to a deferred request
*
* Allows to track deferred requests, to get an insight about what requests are
* not started immediately.
*/
TRACE_EVENT(io_uring_defer,
TP_PROTO(struct io_kiocb *req),
TP_ARGS(req),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, data )
__field( u8, opcode )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->data = req->cqe.user_data;
__entry->opcode = req->opcode;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s",
__entry->ctx, __entry->req, __entry->data,
__get_str(op_str))
);
/**
* io_uring_link - called before the io_uring request added into link_list of
* another request
*
* @req: pointer to a linked request
* @target_req: pointer to a previous request, that would contain @req
*
* Allows to track linked requests, to understand dependencies between requests
* and how does it influence their execution flow.
*/
TRACE_EVENT(io_uring_link,
TP_PROTO(struct io_kiocb *req, struct io_kiocb *target_req),
TP_ARGS(req, target_req),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( void *, target_req )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->target_req = target_req;
),
TP_printk("ring %p, request %p linked after %p",
__entry->ctx, __entry->req, __entry->target_req)
);
/**
* io_uring_cqring_wait - called before start waiting for an available CQE
*
* @ctx: pointer to a ring context structure
* @min_events: minimal number of events to wait for
*
* Allows to track waiting for CQE, so that we can e.g. troubleshoot
* situations, when an application wants to wait for an event, that never
* comes.
*/
TRACE_EVENT(io_uring_cqring_wait,
TP_PROTO(void *ctx, int min_events),
TP_ARGS(ctx, min_events),
TP_STRUCT__entry (
__field( void *, ctx )
__field( int, min_events )
),
TP_fast_assign(
__entry->ctx = ctx;
__entry->min_events = min_events;
),
TP_printk("ring %p, min_events %d", __entry->ctx, __entry->min_events)
);
/**
* io_uring_fail_link - called before failing a linked request
*
* @req: request, which links were cancelled
* @link: cancelled link
*
* Allows to track linked requests cancellation, to see not only that some work
* was cancelled, but also which request was the reason.
*/
TRACE_EVENT(io_uring_fail_link,
TP_PROTO(struct io_kiocb *req, struct io_kiocb *link),
TP_ARGS(req, link),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, user_data )
__field( u8, opcode )
__field( void *, link )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->opcode = req->opcode;
__entry->link = link;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, link %p",
__entry->ctx, __entry->req, __entry->user_data,
__get_str(op_str), __entry->link)
);
/**
* io_uring_complete - called when completing an SQE
*
* @ctx: pointer to a ring context structure
* @req: pointer to a submitted request
* @user_data: user data associated with the request
* @res: result of the request
* @cflags: completion flags
* @extra1: extra 64-bit data for CQE32
* @extra2: extra 64-bit data for CQE32
*
*/
TRACE_EVENT(io_uring_complete,
TP_PROTO(void *ctx, void *req, u64 user_data, int res, unsigned cflags,
u64 extra1, u64 extra2),
TP_ARGS(ctx, req, user_data, res, cflags, extra1, extra2),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( u64, user_data )
__field( int, res )
__field( unsigned, cflags )
__field( u64, extra1 )
__field( u64, extra2 )
),
TP_fast_assign(
__entry->ctx = ctx;
__entry->req = req;
__entry->user_data = user_data;
__entry->res = res;
__entry->cflags = cflags;
__entry->extra1 = extra1;
__entry->extra2 = extra2;
),
TP_printk("ring %p, req %p, user_data 0x%llx, result %d, cflags 0x%x "
"extra1 %llu extra2 %llu ",
__entry->ctx, __entry->req,
__entry->user_data,
__entry->res, __entry->cflags,
(unsigned long long) __entry->extra1,
(unsigned long long) __entry->extra2)
);
/**
* io_uring_submit_req - called before submitting a request
*
* @req: pointer to a submitted request
*
* Allows to track SQE submitting, to understand what was the source of it, SQ
* thread or io_uring_enter call.
*/
TRACE_EVENT(io_uring_submit_req,
TP_PROTO(struct io_kiocb *req),
TP_ARGS(req),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, user_data )
__field( u8, opcode )
__field( u32, flags )
__field( bool, sq_thread )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->opcode = req->opcode;
__entry->flags = req->flags;
__entry->sq_thread = req->ctx->flags & IORING_SETUP_SQPOLL;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, flags 0x%x, "
"sq_thread %d", __entry->ctx, __entry->req,
__entry->user_data, __get_str(op_str),
__entry->flags, __entry->sq_thread)
);
/*
* io_uring_poll_arm - called after arming a poll wait if successful
*
* @req: pointer to the armed request
* @mask: request poll events mask
* @events: registered events of interest
*
* Allows to track which fds are waiting for and what are the events of
* interest.
*/
TRACE_EVENT(io_uring_poll_arm,
TP_PROTO(struct io_kiocb *req, int mask, int events),
TP_ARGS(req, mask, events),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, user_data )
__field( u8, opcode )
__field( int, mask )
__field( int, events )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->opcode = req->opcode;
__entry->mask = mask;
__entry->events = events;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask 0x%x, events 0x%x",
__entry->ctx, __entry->req, __entry->user_data,
__get_str(op_str),
__entry->mask, __entry->events)
);
/*
* io_uring_task_add - called after adding a task
*
* @req: pointer to request
* @mask: request poll events mask
*
*/
TRACE_EVENT(io_uring_task_add,
TP_PROTO(struct io_kiocb *req, int mask),
TP_ARGS(req, mask),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, user_data )
__field( u8, opcode )
__field( int, mask )
__string( op_str, io_uring_get_opcode(req->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = req->cqe.user_data;
__entry->opcode = req->opcode;
__entry->mask = mask;
__assign_str(op_str, io_uring_get_opcode(req->opcode));
),
TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, mask %x",
__entry->ctx, __entry->req, __entry->user_data,
__get_str(op_str),
__entry->mask)
);
/*
* io_uring_req_failed - called when an sqe is errored dring submission
*
* @sqe: pointer to the io_uring_sqe that failed
* @req: pointer to request
* @error: error it failed with
*
* Allows easier diagnosing of malformed requests in production systems.
*/
TRACE_EVENT(io_uring_req_failed,
TP_PROTO(const struct io_uring_sqe *sqe, struct io_kiocb *req, int error),
TP_ARGS(sqe, req, error),
TP_STRUCT__entry (
__field( void *, ctx )
__field( void *, req )
__field( unsigned long long, user_data )
__field( u8, opcode )
__field( u8, flags )
__field( u8, ioprio )
__field( u64, off )
__field( u64, addr )
__field( u32, len )
__field( u32, op_flags )
__field( u16, buf_index )
__field( u16, personality )
__field( u32, file_index )
__field( u64, pad1 )
__field( u64, addr3 )
__field( int, error )
__string( op_str, io_uring_get_opcode(sqe->opcode) )
),
TP_fast_assign(
__entry->ctx = req->ctx;
__entry->req = req;
__entry->user_data = sqe->user_data;
__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>
|