Re: [PATCH 2/2] perf_events: add event constraints support forIntel processors

[Ingo Molnar]

* stephane eranian <eranian@xxxxxxxxxxxxxx> wrote:

> > Spreading them all out into architecture code is the far worse 
> > solution, it creates a fragile distributed monster with repeating 
> > patterns - instead we want a manageable central monster ;-) [We are 
> > also quite good at controlling and shrinking monsters in the core 
> > kernel.]
>
> I don't understand this either.
> Why would architecture specific code be more fragile ?

Because similar code spread out and partly duplicated in 22 
architectures is an order of magnitude less maintainable than
a core library.

	Ingo
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