[PATCH for-next 0/2] Enable IOU_F_TWQ_LAZY_WAKE for passthrough

From: Pavel Begunkov <asml.silence@gmail.com>
To: linux-nvme@lists.infradead.org, linux-block@vger.kernel.org,
	io-uring@vger.kernel.org, axboe@kernel.dk
Cc: kbusch@kernel.org, hch@lst.de, sagi@grimberg.me,
	joshi.k@samsung.com, Pavel Begunkov <asml.silence@gmail.com>
Subject: [PATCH for-next 0/2] Enable IOU_F_TWQ_LAZY_WAKE for passthrough
Date: Mon, 15 May 2023 13:54:41 +0100	[thread overview]
Message-ID: <cover.1684154817.git.asml.silence@gmail.com> (raw)

Let cmds to use IOU_F_TWQ_LAZY_WAKE and enable it for nvme passthrough.

The result should be same as in test to the original IOU_F_TWQ_LAZY_WAKE [1]
patchset, but for a quick test I took fio/t/io_uring with 4 threads each
reading their own drive and all pinned to the same CPU to make it CPU
bound and got +10% throughput improvement.

[1] https://lore.kernel.org/all/cover.1680782016.git.asml.silence@gmail.com/

Pavel Begunkov (2):
  io_uring/cmd: add cmd lazy tw wake helper
  nvme: optimise io_uring passthrough completion

 drivers/nvme/host/ioctl.c |  4 ++--
 include/linux/io_uring.h  | 18 ++++++++++++++++--
 io_uring/uring_cmd.c      | 16 ++++++++++++----
 3 files changed, 30 insertions(+), 8 deletions(-)

base-commit: 9a48d604672220545d209e9996c2a1edbb5637f6
-- 
2.40.0