linux-kernel - Re: [patch] events/amd/power add support for fam16h model30h

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Message-ID: <20160617195754.GP3912@pd.tnic>
Date:	Fri, 17 Jun 2016 21:57:54 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	Huang Rui <ray.huang@....com>, 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>
Subject: Re: [patch] events/amd/power add support for fam16h model30h

On Fri, Jun 17, 2016 at 03:41:38PM -0400, Vince Weaver wrote:
> FWIW on the trinity machine (F15hM13h) with your patch applied I get the 
> following:
> 
> vince@a10:~$ sensors
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1:         +0.0°C  (high = +70.0°C)
>                        (crit = +70.0°C, hyst = +69.0°C)
> 
> fam15h_power-pci-00c4
> Adapter: PCI adapter
> power1:           N/A  (crit = 100.04 W)

Yeah, I didn't expect to be that easy.

Provided hw support on TN is present, someone needs to sit down and
audit the algorithm in show_power() and sanity-check all those values
coming from the PCI regs.

But I'd wait for Rui first to confirm whether it is even worth to chase
this or whether TN is a lost cause because this TDP mechanism is not
supported there or whatever other reason there might be...

-- 
Regards/Gruss,
    Boris.

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