[PATCHSET,0/3] Move io_kiocb from task_struct to io_uring_task

Message

Jens Axboe Nov. 3, 2024, 5:49 p.m. UTC

Hi,

To help avoid doing task_struct dereferences in the hot path, move
struct io_kiocb from stashing a task_struct pointer to an io_uring_task
pointer instead.

Patch 1 moves cancelations to key off io_uring_task rather than task,
patch 2 just cleans up an unnecessary helper, and patch 3 moves to
using io_uring_task in io_kiocb.

 include/linux/io_uring/cmd.h   |  2 +-
 include/linux/io_uring_types.h |  3 +-
 io_uring/cancel.c              |  2 +-
 io_uring/fdinfo.c              |  2 +-
 io_uring/futex.c               |  4 +-
 io_uring/futex.h               |  4 +-
 io_uring/io_uring.c            | 99 +++++++++++++++-------------------
 io_uring/io_uring.h            |  2 +-
 io_uring/msg_ring.c            |  4 +-
 io_uring/notif.c               |  4 +-
 io_uring/poll.c                |  7 ++-
 io_uring/poll.h                |  2 +-
 io_uring/rw.c                  |  2 +-
 io_uring/tctx.c                |  1 +
 io_uring/timeout.c             | 12 ++---
 io_uring/timeout.h             |  2 +-
 io_uring/uring_cmd.c           |  4 +-
 io_uring/uring_cmd.h           |  2 +-
 io_uring/waitid.c              |  6 +--
 io_uring/waitid.h              |  2 +-
 20 files changed, 76 insertions(+), 90 deletions(-)