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[Qemu-block] [PATCH v9 00/17] Add support for io_uring
From: |
Aarushi Mehta |
Subject: |
[Qemu-block] [PATCH v9 00/17] Add support for io_uring |
Date: |
Fri, 2 Aug 2019 05:10:14 +0530 |
This patch series adds support for the newly developed io_uring Linux AIO
interface. Linux io_uring is faster than Linux's AIO asynchronous I/O code,
offers efficient buffered asynchronous I/O support, the ability to do I/O
without performing a system call via polled I/O, and other efficiency
enhancements.
Testing it requires a host kernel (5.1+) and the liburing library.
Use the option -drive aio=io_uring to enable it.
Benchmarks for the system at https://github.com/rooshm/benchmarks.
There is currently an -EIO output when guests are booted from io_uring on ext4,
the error is reported upstream.
https://lore.kernel.org/linux-block/20190723080701.GA3198@stefanha-x1.localdomain/
v9:
- adds sq_polling
- fixes leaks in fd_registration
v8:
- adds fd_registration
v7:
- completes io-tests options
- misc fixes
v6:
- add slow path for short-read
- hooks up fsync
- enables qemu-iotests with aio options
- adds bdrv_parse_aio
Aarushi Mehta (17):
configure: permit use of io_uring
qapi/block-core: add option for io_uring
block/block: add BDRV flag for io_uring
block/io_uring: implements interfaces for io_uring
stubs: add stubs for io_uring interface
util/async: add aio interfaces for io_uring
blockdev: adds bdrv_parse_aio to use io_uring
block/file-posix.c: extend to use io_uring
block: add trace events for io_uring
block/io_uring: adds userspace completion polling
qemu-io: adds option to use aio engine
qemu-img: adds option to use aio engine for benchmarking
qemu-nbd: adds option for aio engines
tests/qemu-iotests: enable testing with aio options
tests/qemu-iotests: use AIOMODE with various tests
block/io_uring: adds fd registration
block/io_uring: enable kernel submission polling
MAINTAINERS | 8 +
block.c | 22 ++
block/Makefile.objs | 3 +
block/file-posix.c | 99 ++++--
block/io_uring.c | 560 ++++++++++++++++++++++++++++++++++
block/trace-events | 13 +
blockdev.c | 12 +-
configure | 27 ++
include/block/aio.h | 16 +-
include/block/block.h | 2 +
include/block/raw-aio.h | 12 +
qapi/block-core.json | 4 +-
qemu-img-cmds.hx | 4 +-
qemu-img.c | 11 +-
qemu-img.texi | 5 +-
qemu-io.c | 25 +-
qemu-nbd.c | 12 +-
qemu-nbd.texi | 4 +-
stubs/Makefile.objs | 1 +
stubs/io_uring.c | 32 ++
tests/qemu-iotests/028 | 3 +-
tests/qemu-iotests/058 | 2 +-
tests/qemu-iotests/089 | 4 +-
tests/qemu-iotests/091 | 7 +-
tests/qemu-iotests/109 | 3 +-
tests/qemu-iotests/147 | 5 +-
tests/qemu-iotests/181 | 10 +-
tests/qemu-iotests/183 | 7 +-
tests/qemu-iotests/185 | 17 +-
tests/qemu-iotests/200 | 3 +-
tests/qemu-iotests/201 | 10 +-
tests/qemu-iotests/check | 15 +-
tests/qemu-iotests/common.rc | 14 +
tests/qemu-iotests/iotests.py | 9 +-
util/async.c | 36 +++
35 files changed, 938 insertions(+), 79 deletions(-)
create mode 100644 block/io_uring.c
create mode 100644 stubs/io_uring.c
--
2.21.0
- [Qemu-block] [PATCH v9 00/17] Add support for io_uring,
Aarushi Mehta <=
- [Qemu-block] [PATCH v9 01/17] configure: permit use of io_uring, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 02/17] qapi/block-core: add option for io_uring, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 03/17] block/block: add BDRV flag for io_uring, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 04/17] block/io_uring: implements interfaces for io_uring, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 05/17] stubs: add stubs for io_uring interface, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 06/17] util/async: add aio interfaces for io_uring, Aarushi Mehta, 2019/08/01
- [Qemu-block] [PATCH v9 07/17] blockdev: adds bdrv_parse_aio to use io_uring, Aarushi Mehta, 2019/08/01