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linux/io_uring/tctx.c

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io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: rename 'in_idle' to 'in_cancel' This better describes what it does - it's incremented when the task is currently undergoing a cancelation operation, due to exiting or exec'ing. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-02-17 08:27:23 -07:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: lockless task list With networking use cases we see contention on the spinlock used to protect the task_list when multiple threads try and add completions at once. Instead we can use a lockless list, and assume that the first caller to add to the list is responsible for kicking off task work. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220622134028.2013417-4-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-22 06:40:23 -07:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: simplify __io_uring_add_tctx_node Remove submitter parameter from __io_uring_add_tctx_node. It was only called from one place, and we can do that logic in that one place. Signed-off-by: Dylan Yudaken <dylany@fb.com> Fixes: 97bbdc06a444 ("io_uring: add IORING_SETUP_SINGLE_ISSUER") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-26 10:09:26 -07:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: simplify __io_uring_add_tctx_node Remove submitter parameter from __io_uring_add_tctx_node. It was only called from one place, and we can do that logic in that one place. Signed-off-by: Dylan Yudaken <dylany@fb.com> Fixes: 97bbdc06a444 ("io_uring: add IORING_SETUP_SINGLE_ISSUER") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-26 10:09:26 -07:00
io_uring: remove io_register_submitter this is no longer needed, as submitter_task is set at creation time. Signed-off-by: Dylan Yudaken <dylany@fb.com> Fixes: 97bbdc06a444 ("io_uring: add IORING_SETUP_SINGLE_ISSUER") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-26 10:09:27 -07:00
io_uring: simplify __io_uring_add_tctx_node Remove submitter parameter from __io_uring_add_tctx_node. It was only called from one place, and we can do that logic in that one place. Signed-off-by: Dylan Yudaken <dylany@fb.com> Fixes: 97bbdc06a444 ("io_uring: add IORING_SETUP_SINGLE_ISSUER") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-26 10:09:26 -07:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: Add io_uring_setup flag to pre-register ring fd and never install it With IORING_REGISTER_USE_REGISTERED_RING, an application can register the ring fd and use it via registered index rather than installed fd. This allows using a registered ring for everything *except* the initial mmap. With IORING_SETUP_NO_MMAP, io_uring_setup uses buffers allocated by the user, rather than requiring a subsequent mmap. The combination of the two allows a user to operate *entirely* via a registered ring fd, making it unnecessary to ever install the fd in the first place. So, add a flag IORING_SETUP_REGISTERED_FD_ONLY to make io_uring_setup register the fd and return a registered index, without installing the fd. This allows an application to avoid touching the fd table at all, and allows a library to never even momentarily install a file descriptor. This splits out an io_ring_add_registered_file helper from io_ring_add_registered_fd, for use by io_uring_setup. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Link: https://lore.kernel.org/r/bc8f431bada371c183b95a83399628b605e978a3.1682699803.git.josh@joshtriplett.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-29 01:40:30 +09:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: Add io_uring_setup flag to pre-register ring fd and never install it With IORING_REGISTER_USE_REGISTERED_RING, an application can register the ring fd and use it via registered index rather than installed fd. This allows using a registered ring for everything *except* the initial mmap. With IORING_SETUP_NO_MMAP, io_uring_setup uses buffers allocated by the user, rather than requiring a subsequent mmap. The combination of the two allows a user to operate *entirely* via a registered ring fd, making it unnecessary to ever install the fd in the first place. So, add a flag IORING_SETUP_REGISTERED_FD_ONLY to make io_uring_setup register the fd and return a registered index, without installing the fd. This allows an application to avoid touching the fd table at all, and allows a library to never even momentarily install a file descriptor. This splits out an io_ring_add_registered_file helper from io_ring_add_registered_fd, for use by io_uring_setup. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Link: https://lore.kernel.org/r/bc8f431bada371c183b95a83399628b605e978a3.1682699803.git.josh@joshtriplett.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-29 01:40:30 +09:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: Add io_uring_setup flag to pre-register ring fd and never install it With IORING_REGISTER_USE_REGISTERED_RING, an application can register the ring fd and use it via registered index rather than installed fd. This allows using a registered ring for everything *except* the initial mmap. With IORING_SETUP_NO_MMAP, io_uring_setup uses buffers allocated by the user, rather than requiring a subsequent mmap. The combination of the two allows a user to operate *entirely* via a registered ring fd, making it unnecessary to ever install the fd in the first place. So, add a flag IORING_SETUP_REGISTERED_FD_ONLY to make io_uring_setup register the fd and return a registered index, without installing the fd. This allows an application to avoid touching the fd table at all, and allows a library to never even momentarily install a file descriptor. This splits out an io_ring_add_registered_file helper from io_ring_add_registered_fd, for use by io_uring_setup. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Link: https://lore.kernel.org/r/bc8f431bada371c183b95a83399628b605e978a3.1682699803.git.josh@joshtriplett.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-29 01:40:30 +09:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00
io_uring: simplify __io_uring_add_tctx_node Remove submitter parameter from __io_uring_add_tctx_node. It was only called from one place, and we can do that logic in that one place. Signed-off-by: Dylan Yudaken <dylany@fb.com> Fixes: 97bbdc06a444 ("io_uring: add IORING_SETUP_SINGLE_ISSUER") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-26 10:09:26 -07:00
io_uring: move io_uring_task (tctx) helpers into its own file Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-25 11:01:04 -06:00