linux-kernel - Re: [PATCH v8 1/3] perf: cavium: Support memory controller PMU counters

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Date:   Wed, 26 Jul 2017 18:40:54 +0200
From:   Jan Glauber <jan.glauber@...iumnetworks.com>
To:     Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc:     Suzuki K Poulose <Suzuki.Poulose@....com>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will.deacon@....com>,
        Borislav Petkov <bp@...en8.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 1/3] perf: cavium: Support memory controller PMU
 counters

On Wed, Jul 26, 2017 at 05:25:15PM +0100, Jonathan Cameron wrote:
> On Wed, 26 Jul 2017 17:46:23 +0200
> Jan Glauber <jan.glauber@...iumnetworks.com> wrote:
> 
> > On Wed, Jul 26, 2017 at 04:17:11PM +0100, Suzuki K Poulose wrote:
> > > How about adding a soc specific (wrapper) driver for the memory controller, which
> > > could use the PCI id and trigger EDAC and PMU drivers (based on what is
> > > selected by configs)  ?  
> > 
> > Sounds good to me. Is there a driver that already does this?
> Sounds like a classic MFD (multifunction device). There are quite a few pci
> devices to be found under drivers/mfd/ than may provide some inspiration.

I've looked into that before, from what I recall it did not fit my use
case. After all these are multi-fn devices.

> Jonathan
> > 
> > --Jan
> > 
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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