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* [PATCHSET v2 RFC 0/11] Add support for ring mapped provided buffers
@ 2022-04-29 17:56 Jens Axboe
  2022-04-29 17:56 ` [PATCH 01/11] io_uring: kill io_recv_buffer_select() wrapper Jens Axboe
                   ` (11 more replies)
  0 siblings, 12 replies; 17+ messages in thread
From: Jens Axboe @ 2022-04-29 17:56 UTC (permalink / raw)
  To: io-uring

Hi,

This series builds to adding support for a different way of doing
provided buffers. The interesting bits here are patch 11, which also has
some performance numbers an an explanation of it.

Patches 1..5 are cleanups that should just applied separately, I
think the clean up the existing code quite nicely.

Patch 6 is a generic optimization for the buffer list lookups.

Patch 7 adds NOP support for provided buffers, just so that we can
benchmark the last change.

Patches 8..10 are prep for patch 11.

Patch 11 finally adds the feature.

This passes the full liburing suite - obviously this just means that it
didn't break anything existing (that I know of), the only test case for
the ring buffers is the nop peak benchmark referenced in patch 11.

v2:	- Minor optimizations
	- Fix 4k PAGE_SIZE assumption
	- Style cleanup

Can also be found in my git repo, for-5.19/io_uring-pbuf branch:

https://git.kernel.dk/cgit/linux-block/log/?h=for-5.19/io_uring-pbuf

 fs/io_uring.c                 | 463 +++++++++++++++++++++++++---------
 include/uapi/linux/io_uring.h |  26 ++
 2 files changed, 370 insertions(+), 119 deletions(-)

-- 
Jens Axboe



^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2022-05-01 15:00 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-04-29 17:56 [PATCHSET v2 RFC 0/11] Add support for ring mapped provided buffers Jens Axboe
2022-04-29 17:56 ` [PATCH 01/11] io_uring: kill io_recv_buffer_select() wrapper Jens Axboe
2022-04-29 17:56 ` [PATCH 02/11] io_uring: make io_buffer_select() return the user address directly Jens Axboe
2022-04-29 17:56 ` [PATCH 03/11] io_uring: kill io_rw_buffer_select() wrapper Jens Axboe
2022-04-29 17:56 ` [PATCH 04/11] io_uring: ignore ->buf_index if REQ_F_BUFFER_SELECT isn't set Jens Axboe
2022-04-29 17:56 ` [PATCH 05/11] io_uring: always use req->buf_index for the provided buffer group Jens Axboe
2022-04-29 17:56 ` [PATCH 06/11] io_uring: cache last io_buffer_list lookup Jens Axboe
2022-04-29 17:56 ` [PATCH 07/11] io_uring: add buffer selection support to IORING_OP_NOP Jens Axboe
2022-04-29 17:56 ` [PATCH 08/11] io_uring: add io_pin_pages() helper Jens Axboe
2022-04-29 17:56 ` [PATCH 09/11] io_uring: abstract out provided buffer list selection Jens Axboe
2022-04-29 17:56 ` [PATCH 10/11] io_uring: relocate io_buffer_get_list() Jens Axboe
2022-04-29 17:56 ` [PATCH 11/11] io_uring: add support for ring mapped supplied buffers Jens Axboe
2022-05-01 13:14 ` [PATCHSET v2 RFC 0/11] Add support for ring mapped provided buffers Pavel Begunkov
2022-05-01 13:28   ` Jens Axboe
2022-05-01 13:39     ` Pavel Begunkov
2022-05-01 14:25       ` Jens Axboe
2022-05-01 15:00         ` Jens Axboe

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