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SubjectRe: [RESEND PATCH 0/2] iowait and idle fixes in /proc/stat
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Thanks for your time and  feedback, Thomas and Alexey.  I'll
address the comments and send out a v2 in the next couple
days.

Thanks!

Tom


On 9/9/20 8:41 AM, Tom Hromatka wrote:
> A customer is using /proc/stat to track cpu usage in a VM and noted
> that the iowait and idle times behave strangely when a cpu goes
> offline and comes back online.
>
> This patchset addresses two issues that can cause iowait and idle
> to fluctuate up and down. With these changes, cpu iowait and idle
> now only monotonically increase.
>
> Tom Hromatka (2):
> tick-sched: Do not clear the iowait and idle times
> /proc/stat: Simplify iowait and idle calculations when cpu is offline
>
> fs/proc/stat.c | 24 ++++++------------------
> kernel/time/tick-sched.c | 9 +++++++++
> 2 files changed, 15 insertions(+), 18 deletions(-)
>

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