Re: [PATCH v0 04/71] itrace: Infrastructure for instruction flow tracing units

[Alexander Shishkin]

Andi Kleen <andi@xxxxxxxxxxxxxx> writes:

>> So create two events, one for the PT stuff and one to track the
>> side-band stuff. We have a NOP event for just this purpose.
>
> Ok I guess that could work.
>
> Essentially replace the magic mmap offset with a second fd.
>
> Alex, what do you think?

Yes, that's what I suggested some time ago in [1]. A second buffer
(through another fd or otherwise) is an essential thing from my point of
view.

[1] http://marc.info/?l=linux-kernel&m=138737306725663

Regards,
--
Alex
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