----- Original Message -----
> Hello Dave,
> 
> On 09/09/2014 03:06 AM, Dave Anderson wrote:
> > I also don't like the idea of making so many changes to the behavior
> > of so many architecture-neutral commands -- and then restricting it
> > to x86_64 only.
> 
> I can only take x86_64 into consideration, for I am not clear about
> other architecture's cpu hot remove. I put the architecture check in
> the new API, check_offline_cpu, we can involve other architecture that
> supports cpu hot remove.

>From the perspective of the crash utility, a cpu is either online or offline,
right?  What would be the architecture-specific issue?
 
> >
> > Many of the changes reflect the contents of per-cpu data structures
> > of offlined cpus, but even though the cpu is currently offline, the
> > data structures still exist.  Why prevent the user from viewing their
> > contents?
> 
> I think just showing online cpu's data is reasonable. 

Why?  Give me an example as to when it is/was a problem?

> What about adding a internal crash variables (used by command set) to 
> hide/show offline cpu's data?

I suppose that could be done, but again, in my opinion there is no compelling
reason to do so.  I could be wrong, but aside from maybe "help -r", it seems
that you are trying to answer a question that nobody's asking.

Dave

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