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2022-07-24io_uring: change ->cqe_cached invariant for CQE32Pavel Begunkov
With IORING_SETUP_CQE32 ->cqe_cached doesn't store a real address but rather an implicit offset into cqes. Store the real cqe pointer and increment it accordingly if CQE32. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/1ee1838cba16bed96381a006950b36ba640d998c.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: deduplicate io_get_cqe() callsPavel Begunkov
Deduplicate calls to io_get_cqe() from __io_fill_cqe_req(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/4fa077986cc3abab7c59ff4e7c390c783885465f.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: deduplicate __io_fill_cqe_req tracingPavel Begunkov
Deduplicate two trace_io_uring_complete() calls in __io_fill_cqe_req(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/277ed85dba5189ab7d932164b314013a0f0b0fdc.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: introduce io_req_cqe_overflow()Pavel Begunkov
__io_fill_cqe_req() is hot and inlined, we want it to be as small as possible. Add io_req_cqe_overflow() accepting only a request and doing all overflow accounting, and replace with it two calls to 6 argument io_cqring_event_overflow(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/048b9fbcce56814d77a1a540409c98c3d383edcb.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: don't inline __io_get_cqe()Pavel Begunkov
__io_get_cqe() is not as hot as io_get_cqe(), no need to inline it, it sheds ~500B from the binary. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/c1ac829198a881b7af8710926f99a3559b9f24c0.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: don't expose io_fill_cqe_aux()Pavel Begunkov
Deduplicate some code and add a helper for filling an aux CQE, locking and notification. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/b7c6557c8f9dc5c4cfb01292116c682a0ff61081.1655455613.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: kill REQ_F_COMPLETE_INLINEPavel Begunkov
REQ_F_COMPLETE_INLINE is only needed to delay queueing into the completion list to io_queue_sqe() as __io_req_complete() is inlined and we don't want to bloat the kernel. As now we complete in a more centralised fashion in io_issue_sqe() we can get rid of the flag and queue to the list directly. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/600ba20a9338b8a39b249b23d3d177803613dde4.1655371007.git.asml.silence@gmail.com Reviewed-by: Hao Xu <howeyxu@tencent.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move small helpers to headersPavel Begunkov
There is a bunch of inline helpers that will be useful not only to the core of io_uring, move them to headers. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/22df99c83723e44cba7e945e8519e64e3642c064.1655310733.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move read/write related opcodes to its own fileJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move remaining file table manipulation to filetable.cJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move rsrc related data, core, and commandsJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: split provided buffers handling into its own fileJens Axboe
Move both the opcodes related to it, and the internals code dealing with it. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move cancelation into its own fileJens Axboe
This also helps cleanup the io_uring.h cancel parts, as we can make things static in the cancel.c file, mostly. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move poll handling into its own fileJens Axboe
Add a io_poll_issue() rather than export the general task_work locking and io_issue_sqe(), and put the io_op_defs definition and structure into a separate header file so that poll can use it. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move io_uring_task (tctx) helpers into its own fileJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move SQPOLL related handling into its own fileJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move timeout opcodes and handling into its own fileJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: split network related opcodes into its own fileJens Axboe
While at it, convert the handlers to just use io_eopnotsupp_prep() if CONFIG_NET isn't set. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: move uring_cmd handling to its own fileJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: split out open/close operationsJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: split out splice related operationsJens Axboe
This splits out splice and tee support. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: handle completions in the coreJens Axboe
Normally request handlers complete requests themselves, if they don't return an error. For the latter case, the core will complete it for them. This is unhandy for pushing opcode handlers further out, as we don't want a bunch of inline completion code and we don't want to make the completion path slower than it is now. Let the core handle any completion, unless the handler explicitly asks us not to. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: set completion results upfrontJens Axboe
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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