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Date:   Thu, 1 Jun 2023 13:20:27 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Thomas Richter <tmricht@linux.ibm.com>
Cc:     Ian Rogers <irogers@google.com>, Marc Zyngier <maz@kernel.org>,
        Oliver Upton <oliver.upton@linux.dev>,
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Subject: Re: [PATCH v4 3/4] perf/core: Remove pmu linear searching code
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On Thu, Jun 01, 2023 at 01:18:56PM +0200, Peter Zijlstra wrote:
> On Thu, Jun 01, 2023 at 01:02:30PM +0200, Thomas Richter wrote:
> 
> > PS: I have the feeling, it gets complicated to have multiple hardware PMUs
> > per platform.
> 
> Recently someone was poking around giving the pmu device a parent, this
> would, I think, result in sysfs links, which could be used to decide
> what's what.
> 
> Core pmus would have the CPU device as their parent, while memory
> controller thingies would link to the relevant node or something.
> 
> Ofc. all that's future-work/pending.

https://lkml.kernel.org/r/20230404134225.13408-1-Jonathan.Cameron%40huawei.com

https://lkml.kernel.org/r/20230531110011.13963-2-Jonathan.Cameron%40huawei.com