[gentoo-dev] [RFC] New global USE flag: io-uring

[gentoo-dev] [RFC] New global USE flag: io-uring

[Filip Kobierski]

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Hello everyone,

lately I have been looking into the io_uring functionality in the
kernel and apps that I use -- what could be a non-generic USE flag
shared by mpd and qemu?

I have noticed that currently 9 packages[1] have an io-uring USE
flag. All of them use it for enabling the use of io_uring
system calls.

The feature was introduced in 5.1 and the oldest we ship is 5.10
so I think there will be no compatibility issues.

Introducing a new io-uring global USE flag would encourage users
to enable it globally and simplify the configuration.

The USE description that I propose is
"Enable the use of io_uring system calls for efficient async IO".
Of course if there is something more fitting it should be chosen,
I have no hard opinions here.

What do you think about it?

Kind regards
Filip Kobierski

[1]: https://packages.gentoo.org/useflags/io-uring

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Re: [gentoo-dev] [RFC] New global USE flag: io-uring

[Jaco Kroon]

Hi,

On 2024/11/08 19:20, Filip Kobierski wrote:
> Hello everyone,
>
> lately I have been looking into the io_uring functionality in the
> kernel and apps that I use -- what could be a non-generic USE flag
> shared by mpd and qemu?
>
> I have noticed that currently 9 packages[1] have an io-uring USE
> flag. All of them use it for enabling the use of io_uring
> system calls.

https://packages.gentoo.org/useflags/uring

So that's 12 packages.

And sys-apps/syd already uses io-uring unconditionally looks like.

I'm in support of this being a global.

Kind regards,
Jaco

Re: [gentoo-dev] [RFC] New global USE flag: io-uring

[Florian Schmaus]

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On 08/11/2024 18.20, Filip Kobierski wrote:
> Hello everyone,
> 
> lately I have been looking into the io_uring functionality in the
> kernel and apps that I use -- what could be a non-generic USE flag
> shared by mpd and qemu?
> 
> I have noticed that currently 9 packages[1] have an io-uring USE
> flag. All of them use it for enabling the use of io_uring
> system calls.
> 
> The feature was introduced in 5.1 and the oldest we ship is 5.10
> so I think there will be no compatibility issues.
> 
> Introducing a new io-uring global USE flag would encourage users
> to enable it globally and simplify the configuration.
> 
> The USE description that I propose is
> "Enable the use of io_uring system calls for efficient async IO".
> Of course if there is something more fitting it should be chosen,
> I have no hard opinions here.
> 
> What do you think about it?

I also think io-uring is a good candidate for a global use flag. Given 
that there where no objections, please feel encouraged to propose a 
tree-wide patch.

- Flow

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