Re: [PATCH 4/4] perf/x86/cqm: Support cqm/mbm only for perf events

[Peter Zijlstra]

On Fri, Apr 22, 2016 at 05:27:21PM -0700, Vikas Shivappa wrote:
> The cgroup support for cqm is broken. Instead of mapping RMID to a
> cgroup currently its mapped to the task and then hence when task moves
> cgroup we get incorrect count.
> 
> Also the conflict handling code which is meant to handle the case of
> co-existing cgroup and task events, is broken. It reports very
> confusing numbers of intermittent zero and some occupancy when perf is
> run with cgroup and task events.
> 
> Hence removing support for the parts which are broken rather than
> pretending to support it and giving incorrect data.

Uh what, how about attempt to fix it?