Re: [for-next][PATCH 13/25] x86/mm/kmmio: Use rcu_read_lock_sched_notrace()

[Thomas Gleixner]

On Sat, Dec 10 2022 at 18:55, Steven Rostedt wrote:
> On Sun, 11 Dec 2022 00:30:36 +0100
> Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>> I concede that there are hot paths which actually can benefit, but this
>> code has exactly _ZERO_ benefit from that. Taking that tracing exception
>> and handling it is orders of magnitudes more expensive than a regular
>> preempt_enable().
>> 
>> So just get rid of it and don't proliferate cargo cult programming.
>> 
> The point of the patch is to just fix the lockdep issue. I'm happy to
> remove that "no_resched" (I was planning to), but that would be a separate
> change, with a different purpose, and thus a separate patch.

Right, but please make that part of the series.

Thanks,

        tglx