Re: [PATCH] perf/x86: check ucode before disabling PEBS on SandyBridge

[H. Peter Anvin]

I don't remember the exact details of the old interface but yes... seems like every "improvement" has just made it a worse mess.

Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

>On Tue, 2012-06-12 at 13:42 -0700, H. Peter Anvin wrote:
>> And yes, I would prefer a single sysfs file,
>> or better yet a plain old device node. 
>
>So how about we rip out all this sysfs crap and go back to
>MICROCODE_OLD_INTERFACE ? Afaict that's relatively sane.

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