linux-kernel - Re: [PATCH 4/4] perf/x86/uncore: modularize Intel uncore driver

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Message-ID: <20140320155035.GJ22728@two.firstfloor.org>
Date:	Thu, 20 Mar 2014 16:50:35 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Vince Weaver <vince@...ter.net>
Cc:	"Yan, Zheng" <zheng.z.yan@...el.com>, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, mingo@...nel.org, acme@...radead.org,
	eranian@...gle.com, andi@...stfloor.org
Subject: Re: [PATCH 4/4] perf/x86/uncore: modularize Intel uncore driver

> 
> I'm not necessarily against the idea, it's just it's tricky enough as it 
> is trying to help people with uncore pmu issues and now I will have to add 
> "make sure the relevant kernel module is loaded" to the list of things 
> that could be going wrong.

In theory the module could be always auto loaded (by adding a
exported pci_device_id to the driver). However for 99% of users it would
be wasted memory, as they never monitor anything.

One way to handle it would be just to add a request_module with
appropiate aliases to perf.

-Andi
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