Re: [PATCH 3/4] perf cgroup: Add cgroup ID as a key of RB tree

[Liang, Kan]

On 4/30/2019 5:03 AM, Peter Zijlstra wrote:
> On Mon, Apr 29, 2019 at 07:44:04AM -0700, kan.liang@xxxxxxxxxxxxxxx wrote:
>
> > Add unique cgrp_id for each cgroup, which is composed by CPU ID and css
> > subsys-unique ID.
>
> *WHY* ?! that doesn't make any kind of sense.. In fact you mostly then
> use the low word because most everything is already per CPU.

I tried to assign an unique ID for each cgroup event.
But you are right, it looks like not necessary.
I will remove it.

Thanks,
Kan