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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-29 18:53:37 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-29 18:53:37 -0800 |
commit | 896f8d23d0cb5889021d66eab6107e97109c5459 (patch) | |
tree | f8ceade3203209679ece27d3cace410178dfc99c /include/uapi | |
parent | 33c84e89abe4a92ab699c33029bd54269d574782 (diff) | |
parent | 3e4827b05d2ac2d377ed136a52829ec46787bf4b (diff) | |
download | linux-896f8d23d0cb5889021d66eab6107e97109c5459.tar.bz2 |
Merge tag 'for-5.6/io_uring-vfs-2020-01-29' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
- Support for various new opcodes (fallocate, openat, close, statx,
fadvise, madvise, openat2, non-vectored read/write, send/recv, and
epoll_ctl)
- Faster ring quiesce for fileset updates
- Optimizations for overflow condition checking
- Support for max-sized clamping
- Support for probing what opcodes are supported
- Support for io-wq backend sharing between "sibling" rings
- Support for registering personalities
- Lots of little fixes and improvements
* tag 'for-5.6/io_uring-vfs-2020-01-29' of git://git.kernel.dk/linux-block: (64 commits)
io_uring: add support for epoll_ctl(2)
eventpoll: support non-blocking do_epoll_ctl() calls
eventpoll: abstract out epoll_ctl() handler
io_uring: fix linked command file table usage
io_uring: support using a registered personality for commands
io_uring: allow registering credentials
io_uring: add io-wq workqueue sharing
io-wq: allow grabbing existing io-wq
io_uring/io-wq: don't use static creds/mm assignments
io-wq: make the io_wq ref counted
io_uring: fix refcounting with batched allocations at OOM
io_uring: add comment for drain_next
io_uring: don't attempt to copy iovec for READ/WRITE
io_uring: honor IOSQE_ASYNC for linked reqs
io_uring: prep req when do IOSQE_ASYNC
io_uring: use labeled array init in io_op_defs
io_uring: optimise sqe-to-req flags translation
io_uring: remove REQ_F_IO_DRAINED
io_uring: file switch work needs to get flushed on exit
io_uring: hide uring_fd in ctx
...
Diffstat (limited to 'include/uapi')
-rw-r--r-- | include/uapi/linux/io_uring.h | 73 |
1 files changed, 67 insertions, 6 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 55cfcb71606d..3f7961c1c243 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -34,21 +34,43 @@ struct io_uring_sqe { __u32 timeout_flags; __u32 accept_flags; __u32 cancel_flags; + __u32 open_flags; + __u32 statx_flags; + __u32 fadvise_advice; }; __u64 user_data; /* data to be passed back at completion time */ union { - __u16 buf_index; /* index into fixed buffers, if used */ + struct { + /* index into fixed buffers, if used */ + __u16 buf_index; + /* personality to use, if used */ + __u16 personality; + }; __u64 __pad2[3]; }; }; +enum { + IOSQE_FIXED_FILE_BIT, + IOSQE_IO_DRAIN_BIT, + IOSQE_IO_LINK_BIT, + IOSQE_IO_HARDLINK_BIT, + IOSQE_ASYNC_BIT, +}; + /* * sqe->flags */ -#define IOSQE_FIXED_FILE (1U << 0) /* use fixed fileset */ -#define IOSQE_IO_DRAIN (1U << 1) /* issue after inflight IO */ -#define IOSQE_IO_LINK (1U << 2) /* links next sqe */ -#define IOSQE_IO_HARDLINK (1U << 3) /* like LINK, but stronger */ +/* use fixed fileset */ +#define IOSQE_FIXED_FILE (1U << IOSQE_FIXED_FILE_BIT) +/* issue after inflight IO */ +#define IOSQE_IO_DRAIN (1U << IOSQE_IO_DRAIN_BIT) +/* links next sqe */ +#define IOSQE_IO_LINK (1U << IOSQE_IO_LINK_BIT) +/* like LINK, but stronger */ +#define IOSQE_IO_HARDLINK (1U << IOSQE_IO_HARDLINK_BIT) +/* always go async */ +#define IOSQE_ASYNC (1U << IOSQE_ASYNC_BIT) /* * io_uring_setup() flags @@ -57,6 +79,8 @@ struct io_uring_sqe { #define IORING_SETUP_SQPOLL (1U << 1) /* SQ poll thread */ #define IORING_SETUP_SQ_AFF (1U << 2) /* sq_thread_cpu is valid */ #define IORING_SETUP_CQSIZE (1U << 3) /* app defines CQ size */ +#define IORING_SETUP_CLAMP (1U << 4) /* clamp SQ/CQ ring sizes */ +#define IORING_SETUP_ATTACH_WQ (1U << 5) /* attach to existing wq */ enum { IORING_OP_NOP, @@ -76,6 +100,19 @@ enum { IORING_OP_ASYNC_CANCEL, IORING_OP_LINK_TIMEOUT, IORING_OP_CONNECT, + IORING_OP_FALLOCATE, + IORING_OP_OPENAT, + IORING_OP_CLOSE, + IORING_OP_FILES_UPDATE, + IORING_OP_STATX, + IORING_OP_READ, + IORING_OP_WRITE, + IORING_OP_FADVISE, + IORING_OP_MADVISE, + IORING_OP_SEND, + IORING_OP_RECV, + IORING_OP_OPENAT2, + IORING_OP_EPOLL_CTL, /* this goes last, obviously */ IORING_OP_LAST, @@ -153,7 +190,8 @@ struct io_uring_params { __u32 sq_thread_cpu; __u32 sq_thread_idle; __u32 features; - __u32 resv[4]; + __u32 wq_fd; + __u32 resv[3]; struct io_sqring_offsets sq_off; struct io_cqring_offsets cq_off; }; @@ -164,6 +202,8 @@ struct io_uring_params { #define IORING_FEAT_SINGLE_MMAP (1U << 0) #define IORING_FEAT_NODROP (1U << 1) #define IORING_FEAT_SUBMIT_STABLE (1U << 2) +#define IORING_FEAT_RW_CUR_POS (1U << 3) +#define IORING_FEAT_CUR_PERSONALITY (1U << 4) /* * io_uring_register(2) opcodes and arguments @@ -175,6 +215,10 @@ struct io_uring_params { #define IORING_REGISTER_EVENTFD 4 #define IORING_UNREGISTER_EVENTFD 5 #define IORING_REGISTER_FILES_UPDATE 6 +#define IORING_REGISTER_EVENTFD_ASYNC 7 +#define IORING_REGISTER_PROBE 8 +#define IORING_REGISTER_PERSONALITY 9 +#define IORING_UNREGISTER_PERSONALITY 10 struct io_uring_files_update { __u32 offset; @@ -182,4 +226,21 @@ struct io_uring_files_update { __aligned_u64 /* __s32 * */ fds; }; +#define IO_URING_OP_SUPPORTED (1U << 0) + +struct io_uring_probe_op { + __u8 op; + __u8 resv; + __u16 flags; /* IO_URING_OP_* flags */ + __u32 resv2; +}; + +struct io_uring_probe { + __u8 last_op; /* last opcode supported */ + __u8 ops_len; /* length of ops[] array below */ + __u16 resv; + __u32 resv2[3]; + struct io_uring_probe_op ops[0]; +}; + #endif |