/* 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 long long , 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 = (__force unsigned long long ) req->flags;
__entry->opcode = req->opcode;
__entry->work = &req->work;
__entry->rw = rw;
__assign_str(op_str);
),
TP_printk("ring %p, request %p, user_data 0x%llx, opcode %s, flags 0x%llx, %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);
),
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);
),
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 : ( optional ) pointer to a submitted request
* @ cqe : pointer to the filled in CQE being posted
*/
TRACE_EVENT(io_uring_complete,
TP_PROTO(struct io_ring_ctx *ctx, void *req, struct io_uring_cqe *cqe),
TP_ARGS(ctx, req, cqe),
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 = cqe->user_data;
__entry->res = cqe->res;
__entry->cflags = cqe->flags;
__entry->extra1 = io_ctx_cqe32(ctx) ? cqe->big_cqe[0 ] : 0 ;
__entry->extra2 = io_ctx_cqe32(ctx) ? cqe->big_cqe[1 ] : 0 ;
),
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( unsigned long long , 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 = (__force unsigned long long ) req->flags;
__entry->sq_thread = req->ctx->flags & IORING_SETUP_SQPOLL;
__assign_str(op_str);
),
TP_printk("ring %p, req %p, user_data 0x%llx, opcode %s, flags 0x%llx, "
"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);
),
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);
),
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);
),
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
*
*/
TRACE_EVENT(io_uring_task_work_run,
TP_PROTO(void *tctx, unsigned int count),
TP_ARGS(tctx, count),
TP_STRUCT__entry (
__field( void *, tctx )
__field( unsigned int , count )
),
TP_fast_assign(
__entry->tctx = tctx;
__entry->count = count;
),
TP_printk("tctx %p, count %u" , __entry->tctx, __entry->count)
);
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
*
* @ ctx : pointer to an io_ring_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>
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