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SubjectRe: [PATCH 9/16] 2.6.17-rc6 perfmon2 patch for review: kernel-level API support (kapi)

Stephane Eranian <> writes:

> > > This patch contains the kernel-level API support.
> > NACK. No one should call this from kernel space.
> Well, that's what I initially thought too but there is a need from
> the SystemTap people and given the way they set things up, it is
> hard to do it from user level. [...]

Whether one uses systemtap, raw kprobes, or some specialized
tracing/stats-collecting patch surely forthcoming, kernel-level APIs
would be needed to perform fine-grained kernel-scope measurements
using these counters.

- FChE
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