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SubjectRe: [RESEND][PATCH 0/4] Virtual Machine Time Accounting
Avi Kivity wrote:
> Ingo Molnar wrote:
>> * Laurent Vivier <> wrote:
>>> Ingo, please, could you have a look to these patches ?
>>> The aim of these four patches is to introduce Virtual Machine time
>>> accounting.
>>> [PATCH 1/4] as recent CPUs introduce a third running state, after
>>> "user" and "system", we need a new field, "guest", in cpustat to
>>> store the time used by the CPU to run virtual CPU. Modify /proc/stat
>>> to display this new field.
>> the concept certainly looks sane to me.
>> The heavy-handed use of #ifdefs uglifies the code to a large degree,
>> but this is not a fundamental problem: since basically all distros
>> have KVM enabled (and lguest benefits from this too), could you just
>> make all this new code unconditional?
> I imagine the embedded people will complain... perhaps move all the code
> to a #ifdef section above with a full implementation and a stub
> implementation.

I'm going to repost patches without #ifdefs for readability.
Then we could discuss if we should introduce #ifdefs and how.

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"Software is hard" - Donald Knuth

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