Re: Dynamic preemption support in Linux 5.12 kernel

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Apr 26, 2021 at 5:12 PM Andrew Lutomirski <luto@xxxxxxx> wrote:
>
> On Mon, Apr 26, 2021 at 1:29 PM Justin Forbes <jmforbes@xxxxxxxxxxx> wrote:
> >
> > On Mon, Apr 26, 2021 at 11:25 AM Vitaly Zaitsev via devel
> > <devel@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > >
> > > On 25.04.2021 20:39, Artem Tim wrote:
> > > > Please provide full PREEMPT mode by default in 5.12 kernel for desktop variants. With 5.12 it is possible for user to change it without efforts if they need this.
> > >
> > > +1 for this. Significantly reduces X11 input lag in full-screen games.
> > >
> >
> > From a kernel standpoint, I do not think turning on CONFIG_PREEMPT is
> > desired. That sets the *default* to PREEMPT, and changes the current
> > situation. I plan to keep CONFIG_PREEMPT_VOLUNTARY as the default.
>
> I'm curious: why do you prefer voluntary as the default instead of full preempt?
>
> > The
> > code introduced is odd, in that you can choose other options (none,
> > voluntary, full) based on that starting point, but it doesn't allow
> > you to default to anything else and keep CONFIG_PREEMPT_DYNAMIC on to
> > choose more preemption than the default.
>
> I've pinged the right people.  I'll try to make this happen.

Any update on this?

Thanks,
Justin
_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Fedora Announce]     [Fedora Users]     [Fedora Kernel]     [Fedora Testing]     [Fedora Formulas]     [Fedora PHP Devel]     [Kernel Development]     [Fedora Legacy]     [Fedora Maintainers]     [Fedora Desktop]     [PAM]     [Red Hat Development]     [Gimp]     [Yosemite News]

  Powered by Linux