Re: [PATCH v2] sched/rt: Clean up usage of rt_task()

[Sebastian Andrzej Siewior]

On 2024-05-29 11:34:09 [+0100], Qais Yousef wrote:
> > behaviour. But then it is insistent which matters only in the RT case.
> > Puh. Any sched folks regarding policy?
> 
> I am not sure I understood you here. Could you rephrase please?

Right now a SCHED_OTHER task boosted to a realtime priority gets
slack=0. In the !RT scenario everything is fine.
For RT the slack=0 also happens but the init of the timer looks at the
policy instead at the possible boosted priority and uses a different
clock attribute. This can lead to a delayed wake up (so avoiding the
slack does not solve the problem).

This is not consistent because IMHO the clock setup & slack should be
handled equally. So I am asking the sched folks for a policy and I am
leaning towards looking at task-policy in this case instead of prio
because you shouldn't do anything that can delay.

Sebastian