linux-kernel - Re: [PATCH] Support for perf on AMD family17h processors

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Message-ID: <20161117064625.GA3760@gmail.com>
Date:   Thu, 17 Nov 2016 07:46:26 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Janakarajan Natarajan <Janakarajan.Natarajan@....com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Subject: Re: [PATCH] Support for perf on AMD family17h processors


* Janakarajan Natarajan <Janakarajan.Natarajan@....com> wrote:

> This patch enables perf core PMU support for AMD family17h processors. In 
> family17h, there is no PMC-event constraint. All events, irrespective of the 
> type, can be measured using any of the performance counters.

BTW., that's a very nice hardware design that simplifies counter constraints and 
scheduling!

Does Fam17h have 6 generic counters per core, like Fam15h?

Thanks,

	Ingo