Re: [PATCH] perfmon: add context switch hooks for x86

[Andi Kleen]

stephane eranian wrote:
> Andi,
> 
> It would be much bigger because it would pull in a bunch of generic
> and model-specific
> data structures and code.
> 
> To context switch, you need to know what the registers are, thus you
> need the PMU
> mapping table, which is implemented by a kernel module, so it needs
> its registration
> framework....

Can you strip it down to be simpler?

Minimally generic x86 perfctr switching code just needs an array with
MSR numbers, doesn't it? And there are only a few variants.

-Andi
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