Re: [PATCH V4] perf: event preserve and create across cpu hotplug

[Peter Zijlstra]

On Tue, Jun 18, 2019 at 02:24:51PM +0530, Mukesh Ojha wrote:
> Perf framework doesn't allow preserving CPU events across
> CPU hotplugs. The events are scheduled out as and when the
> CPU walks offline. Moreover, the framework also doesn't
> allow the clients to create events on an offline CPU. As
> a result, the clients have to keep on monitoring the CPU
> state until it comes back online.
> 
> Therefore,

That's not a therefore. There's a distinct lack of rationale here. Why
do you want this?