Re: [tip:perfcounters/core] perf_counter: x86: Fix call-chain supportto use NMI-safe methods

From: H. Peter Anvin
Date: Mon Jun 15 2009 - 18:41:14 EST


Mathieu Desnoyers wrote:
>
> I'm just thinking that touching or not vmalloc'd areas should not be the
> first thing that comes into the mind of someone willing to write a
> nmi-hooking tracer or oprofile module.
>

But is HAS to be. Otherwise you're in deadlock city anyway.

-hpa

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