Move io_uring to os/linux/

[fio.git] / os / io_uring.h

diff --git a/os/io_uring.h b/os/io_uring.h
deleted file mode 100644 (file)
index 0f4460d..0000000
--- a/os/io_uring.h
+++ /dev/null
@@ -1,148 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Header file for the io_uring interface.
- *
- * Copyright (C) 2019 Jens Axboe
- * Copyright (C) 2019 Christoph Hellwig
- */
-#ifndef LINUX_IO_URING_H
-#define LINUX_IO_URING_H
-
-#include <linux/fs.h>
-#include <linux/types.h>
-
-/*
- * IO submission data structure (Submission Queue Entry)
- */
-struct io_uring_sqe {
-       __u8    opcode;         /* type of operation for this sqe */
-       __u8    flags;          /* IOSQE_ flags */
-       __u16   ioprio;         /* ioprio for the request */
-       __s32   fd;             /* file descriptor to do IO on */
-       __u64   off;            /* offset into file */
-       union {
-               void    *addr;  /* buffer or iovecs */
-               __u64   __pad;
-       };
-       __u32   len;            /* buffer size or number of iovecs */
-       union {
-               __kernel_rwf_t  rw_flags;
-               __u32           fsync_flags;
-       };
-       __u16   buf_index;      /* index into fixed buffers, if used */
-       __u16   __pad2;
-       __u32   __pad3;
-       __u64   user_data;      /* data to be passed back at completion time */
-};
-
-/*
- * sqe->flags
- */
-#define IOSQE_FIXED_FILE       (1 << 0)        /* use fixed fileset */
-
-/*
- * io_uring_setup() flags
- */
-#define IORING_SETUP_IOPOLL    (1 << 0)        /* io_context is polled */
-#define IORING_SETUP_SQPOLL    (1 << 1)        /* SQ poll thread */
-#define IORING_SETUP_SQ_AFF    (1 << 2)        /* sq_thread_cpu is valid */
-
-#define IORING_OP_NOP          0
-#define IORING_OP_READV                1
-#define IORING_OP_WRITEV       2
-#define IORING_OP_FSYNC                3
-#define IORING_OP_READ_FIXED   4
-#define IORING_OP_WRITE_FIXED  5
-
-/*
- * sqe->fsync_flags
- */
-#define IORING_FSYNC_DATASYNC  (1 << 0)
-
-/*
- * IO completion data structure (Completion Queue Entry)
- */
-struct io_uring_cqe {
-       __u64   user_data;      /* sqe->data submission passed back */
-       __s32   res;            /* result code for this event */
-       __u32   flags;
-};
-
-/*
- * io_uring_event->flags
- */
-#define IOCQE_FLAG_CACHEHIT    (1 << 0)        /* IO did not hit media */
-
-/*
- * Magic offsets for the application to mmap the data it needs
- */
-#define IORING_OFF_SQ_RING             0ULL
-#define IORING_OFF_CQ_RING             0x8000000ULL
-#define IORING_OFF_SQES                        0x10000000ULL
-
-/*
- * Filled with the offset for mmap(2)
- */
-struct io_sqring_offsets {
-       __u32 head;
-       __u32 tail;
-       __u32 ring_mask;
-       __u32 ring_entries;
-       __u32 flags;
-       __u32 dropped;
-       __u32 array;
-       __u32 resv[3];
-};
-
-/*
- * sq_ring->flags
- */
-#define IORING_SQ_NEED_WAKEUP  (1 << 0) /* needs io_uring_enter wakeup */
-
-struct io_cqring_offsets {
-       __u32 head;
-       __u32 tail;
-       __u32 ring_mask;
-       __u32 ring_entries;
-       __u32 overflow;
-       __u32 cqes;
-       __u32 resv[4];
-};
-
-/*
- * io_uring_enter(2) flags
- */
-#define IORING_ENTER_GETEVENTS (1 << 0)
-
-/*
- * Passed in for io_uring_setup(2). Copied back with updated info on success
- */
-struct io_uring_params {
-       __u32 sq_entries;
-       __u32 cq_entries;
-       __u32 flags;
-       __u16 sq_thread_cpu;
-       __u16 resv[9];
-       struct io_sqring_offsets sq_off;
-       struct io_cqring_offsets cq_off;
-};
-
-/*
- * io_uring_register(2) opcodes and arguments
- */
-#define IORING_REGISTER_BUFFERS                0
-#define IORING_UNREGISTER_BUFFERS      1
-#define IORING_REGISTER_FILES          2
-#define IORING_UNREGISTER_FILES                3
-
-struct io_uring_register_buffers {
-       struct iovec *iovecs;
-       __u32 nr_iovecs;
-};
-
-struct io_uring_register_files {
-       __s32 *fds;
-       __u32 nr_fds;
-};
-
-#endif