Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side

Avi Kivity
2010-03-16T10:40:59Z

On 03/16/2010 12:20 PM, Ingo Molnar wrote:
>>>>
>>>> The symbol server's client can certainly access the bits through vmchannel.
>>>>
>>> Ok, that would work i suspect.
>>>
>>> Would be nice to have the symbol server in tools/perf/ and also make it easy
>>> to add it to the initrd via a .config switch or so.
>>>
>>> That would have basically all of the advantages of being built into the kernel
>>> (availability, configurability, transparency, hackability), while having all
>>> the advantages of a user-space approach as well (flexibility, extensibility,
>>> robustness, ease of maintenance, etc.).
>>>
>> Note, I am not advocating building the vmchannel client into the host
>> kernel. [...]
>>
> Neither am i. What i suggested was a user-space binary/executable built in
> tools/perf and put into the initrd.
>

I'm confused - initrd seems to be guest-side. I was talking about the
host side.

For the guest, placing the symbol server in tools/ is reasonable.

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