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     KˆÌË„ y¿Ê¿È ?÷     K/* 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_w