[v3] Add support for io_uring

[Qemu-devel] [PATCH v3 2/8] qapi/block-core: add option for io_uring

Posted by Aarushi Mehta 6 years, 8 months ago

Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
---
 qapi/block-core.json | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/qapi/block-core.json b/qapi/block-core.json
index 7ccbfff9d0..2773803890 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2776,11 +2776,13 @@
 #
 # @threads:     Use qemu's thread pool
 # @native:      Use native AIO backend (only Linux and Windows)
+# @io_uring:    Use linux io_uring (only Linux)
 #
-# Since: 2.9
+# Since: 2.9 @iouring Since: 4.1
 ##
 { 'enum': 'BlockdevAioOptions',
-  'data': [ 'threads', 'native' ] }
+  'data': [ 'threads', 'native',
+            { 'name': 'io_uring', 'if': 'defined(CONFIG_LINUX_IO_URING)' } ] }
 
 ##
 # @BlockdevCacheOptions:
-- 
2.17.1

Re: [Qemu-devel] [Qemu-block] [PATCH v3 2/8] qapi/block-core: add option for io_uring

Posted by Stefan Hajnoczi 6 years, 8 months ago

On Mon, May 27, 2019 at 9:04 AM Aarushi Mehta <mehta.aaru20@gmail.com> wrote:
> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index 7ccbfff9d0..2773803890 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -2776,11 +2776,13 @@
>  #
>  # @threads:     Use qemu's thread pool
>  # @native:      Use native AIO backend (only Linux and Windows)
> +# @io_uring:    Use linux io_uring (only Linux)
>  #
> -# Since: 2.9
> +# Since: 2.9 @iouring Since: 4.1

The convention in QAPI schema files is to mark the newly added parameter:

+# @io_uring:    Use linux io_uring (only Linux, since 4.1)