On Fri, 8 Apr 2022 06:21:03 -0400 Joel Fernandes <joel@xxxxxxxxxxxxxxxxx> wrote: > > + default !PREEMPT_RT && NR_CPUS <= 32 > > What is the benefit of turning it off on PREEMPT_RT, even if > PREEMPT_RT does not use expedited GPs much post-boot? I would think in > the future if PREEMPT_RT ever uses expedited GPs, they would want this > feature even more. I'd rather be future-proof now as I don't see any > advantages of disabling it on !PREEMPT_RT (And a drawback that the fix > won't apply to those systems). Also will keep the config simple. The default kthread priority is 1. This should not affect PREEMPT_RT, as PREEMPT_RT users are usually more concerned by the performance of their higher priority tasks. Priority 1 is not considered an issue. I do not see why PREEMPT_RT is special here. Why was it singled out? -- Steve
