Re: [PATCH v5 7/9] KVM-GST: KVM Steal time accounting

[Rik van Riel]

On 07/04/2011 11:32 AM, Glauber Costa wrote:
> This patch accounts steal time time in account_process_tick.
> If one or more tick is considered stolen in the current
> accounting cycle, user/system accounting is skipped. Idle is fine,
> since the hypervisor does not report steal time if the guest
> is halted.
>
> Accounting steal time from the core scheduler give us the
> advantage of direct acess to the runqueue data. In a later
> opportunity, it can be used to tweak cpu power and make
> the scheduler aware of the time it lost.
>
> Signed-off-by: Glauber Costa<glommer@xxxxxxxxxx>
> CC: Rik van Riel<riel@xxxxxxxxxx>
> CC: Jeremy Fitzhardinge<jeremy.fitzhardinge@xxxxxxxxxx>
> CC: Peter Zijlstra<peterz@xxxxxxxxxxxxx>
> CC: Avi Kivity<avi@xxxxxxxxxx>
> CC: Anthony Liguori<aliguori@xxxxxxxxxx>
> CC: Eric B Munson<emunson@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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