On Wed, 2016-05-18 at 20:27 +0800, Wanpeng Li wrote:
> From: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
>
> This patch adds steal guest time support to full dynticks CPU
> time accounting. After 'commit ff9a9b4c4334 ("sched, time: Switch
> VIRT_CPU_ACCOUNTING_GEN to jiffy granularity")', time is jiffy
> based sampling even if it's still listened to ring boundaries, so
> steal_account_process_tick() is reused to account how much 'ticks'
> are steal time after the last accumulation.
>
> Suggested-by: Rik van Riel <riel@xxxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> Cc: Rik van Riel <riel@xxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Cc: Radim <rkrcmar@xxxxxxxxxx>
> Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
This also nicely fixes up f9c904b7613b ("sched/cputime:
Fix steal_account_process_tick() to always return jiffies"),
which relies on a bool function returning a certain number
of jiffies :)
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
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