Re: [PATCH v3] vmstat: Kernel stack usage histogram

[Shakeel Butt]

Hi Pasha, I think you might have missed the questions I had below. Your
response would really be appreciated.

On Fri, May 31, 2024 at 03:42:34PM GMT, Shakeel Butt wrote:
> On Thu, May 30, 2024 at 08:14:17PM GMT, Pasha Tatashin wrote:
> > Hi Shakeel,
> > 
> > > Couple of questions:
> > >
> > > 1. In future with your on-demand kstack allocation feature, will these
> > > metrics still be useful? (I think so but I want to know your take)
> > 
> > It depends on how on-demand allocation is implemented. On hardware
> > that supports faults on kernel stacks,
> 
> Which hardware supports faults on kernel stacks and which do not?
> 
> > we will have other metrics that
> > show the total number of pages allocated for stacks.
> 
> Don't we already have a metric for that i.e. KernelStack in meminfo
> which is in kB unit?
> 
> One more question: Is there any concern in making
> CONFIG_DEBUG_STACK_USAGE not a debug feature i.e. enable in default
> kernels instead of just debug kernels?
> 
> thanks,
> Shakeel
>