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for-6.6/io_uring-2023-08-28

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Merge tag 'for-6.6/io_uring-2023-08-28' of git://git.kernel.dk/linux

Pull io_uring updates from Jens Axboe:
 "Fairly quiet round in terms of features, mostly just improvements all
  over the map for existing code. In detail:

   - Initial support for socket operations through io_uring. Latter half
     of this will likely land with the 6.7 kernel, then allowing things
     like get/setsockopt (Breno)

   - Cleanup of the cancel code, and then adding support for canceling
     requests with the opcode as the key (me)

   - Improvements for the io-wq locking (me)

   - Fix affinity setting for SQPOLL based io-wq (me)

   - Remove the io_uring userspace code. These were added initially as
     copies from liburing, but all of them have since bitrotted and are
     way out of date at this point. Rather than attempt to keep them in
     sync, just get rid of them. People will have liburing available
     anyway for these examples. (Pavel)

   - Series improving the CQ/SQ ring caching (Pavel)

   - Misc fixes and cleanups (Pavel, Yue, me)"

* tag 'for-6.6/io_uring-2023-08-28' of git://git.kernel.dk/linux: (47 commits)
  io_uring: move iopoll ctx fields around
  io_uring: move multishot cqe cache in ctx
  io_uring: separate task_work/waiting cache line
  io_uring: banish non-hot data to end of io_ring_ctx
  io_uring: move non aligned field to the end
  io_uring: add option to remove SQ indirection
  io_uring: compact SQ/CQ heads/tails
  io_uring: force inline io_fill_cqe_req
  io_uring: merge iopoll and normal completion paths
  io_uring: reorder cqring_flush and wakeups
  io_uring: optimise extra io_get_cqe null check
  io_uring: refactor __io_get_cqe()
  io_uring: simplify big_cqe handling
  io_uring: cqe init hardening
  io_uring: improve cqe !tracing hot path
  io_uring/rsrc: Annotate struct io_mapped_ubuf with __counted_by
  io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used
  io_uring: simplify io_run_task_work_sig return
  io_uring/rsrc: keep one global dummy_ubuf
  io_uring: never overflow io_aux_cqe
  ...
This commit is contained in:
Linus Torvalds 2023-08-29 20:11:33 -07:00
commit c1b7fcf3f6
31 changed files with 442 additions and 1777 deletions
Download patch file Download diff file Expand all files Collapse all files

21
include/uapi/linux/io_uring.h
View file

@ -185,6 +185,11 @@ enum {
*/
#define IORING_SETUP_REGISTERED_FD_ONLY (1U << 15)
/*
* Removes indirection through the SQ index array.
*/
#define IORING_SETUP_NO_SQARRAY (1U << 16)
enum io_uring_op {
IORING_OP_NOP,
IORING_OP_READV,
@ -299,11 +304,15 @@ enum io_uring_op {
* request 'user_data'
* IORING_ASYNC_CANCEL_ANY Match any request
* IORING_ASYNC_CANCEL_FD_FIXED 'fd' passed in is a fixed descriptor
* IORING_ASYNC_CANCEL_USERDATA Match on user_data, default for no other key
* IORING_ASYNC_CANCEL_OP Match request based on opcode
*/
#define IORING_ASYNC_CANCEL_ALL (1U << 0)
#define IORING_ASYNC_CANCEL_FD (1U << 1)
#define IORING_ASYNC_CANCEL_ANY (1U << 2)
#define IORING_ASYNC_CANCEL_FD_FIXED (1U << 3)
#define IORING_ASYNC_CANCEL_USERDATA (1U << 4)
#define IORING_ASYNC_CANCEL_OP (1U << 5)
/*
* send/sendmsg and recv/recvmsg flags (sqe->ioprio)
@ -697,7 +706,9 @@ struct io_uring_sync_cancel_reg {
__s32 fd;
__u32 flags;
struct __kernel_timespec timeout;
__u64 pad[4];
__u8 opcode;
__u8 pad[7];
__u64 pad2[3];
};
/*
@ -717,6 +728,14 @@ struct io_uring_recvmsg_out {
__u32 flags;
};
/*
* Argument for IORING_OP_URING_CMD when file is a socket
*/
enum {
SOCKET_URING_OP_SIOCINQ = 0,
SOCKET_URING_OP_SIOCOUTQ,
};
#ifdef __cplusplus
}
#endif