Re: [PATCH v3 5/9] KVM-HV: use schedstats to calculate steal time

[Eric B Munson]

On Wed, 29 Jun 2011, Glauber Costa wrote:

> SCHEDSTATS provide a precise source of information about time tasks
> spent on a runqueue, but not running (among other things). It is
> specially useful for the steal time implementation, because it doesn't
> record halt time at all.
> 
> To avoid a hard dependency on schedstats, since it is possible one won't
> want to record statistics about all processes running, the previous method
> of time measurement on put/load vcpu is kept  for !SCHEDSTATS.
> 
> 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>
> CC: Marcelo Tosatti <mtosatti@xxxxxxxxxx>

Tested-by: Eric B Munson <emunson@xxxxxxxxx>

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