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Date:   Tue, 28 May 2019 10:26:15 -0400
From:   "Liang, Kan" <>
To:     Peter Zijlstra <>
Subject: Re: [PATCH V2 1/3] perf/x86: Disable non generic regs for
 software/probe events

On 5/28/2019 10:05 AM, Peter Zijlstra wrote:
> On Tue, May 28, 2019 at 09:33:40AM -0400, Liang, Kan wrote:
>> Uncore PMU doesn't support sampling. It will return -EINVAL.
>> There is no regs support for counting. The request will be ignored.
>> I think current check for uncore is good enough.
> breakpoints then.. There's also no guarantee you covered all software
> events, and the core rewrite will allow other per-task/sampling PMUs
> too.
> The approach you take is just not complete, don't do that.

OK. I will send V3 base on your proposed patches.


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