Re: [PATCH 0/2] Scheduler time extension

[Prakash Sangappa]

Resending - as the previous email did not make it to the mailing list.

> On Apr 14, 2025, at 9:41 AM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> 
> On Fri, 11 Apr 2025 20:54:14 +0000
> Prakash Sangappa <prakash.sangappa@xxxxxxxxxx> wrote:
> 
>>> On Mar 22, 2025, at 3:14 AM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>>> 
>>> On Tue, 18 Mar 2025 16:10:09 +0000
>>> Prakash Sangappa <prakash.sangappa@xxxxxxxxxx> wrote:
>>> 
>>>> How do we proceed on this feature? 
>>>> Are we leaning towards enabling this feature for SCHED_OTHER only under PREEMPT_LAZY?  
>>> 
>>> The merge window is about to open and I'm way behind in what needs to go in.
>>> 
>>> Let's continue this discussion after rc1 comes out.  
>> 
>> Can the API be finalized? We have an use case which will benefit from it. So like to see this feature
>> merged.
> 
> I'm still not for SCHED_OTHER tasks being allowed to delay RT or deadline
> tasks, even for 5us. But if that's what Peter wants, I'm not going to nack
> it.
> 
> Just keep it configurable so that it can be easily disabled, as I have no
> intentions of using it.
> 

Ok, could we add a CONFIG_ option to choose this feature or are you suggesting disabling with a tunable?
Also make the delay a tunable? Caped at 50us.

Will send out an updated patch.

-Prakash


> -- Steve