linux-kernel - Re: [PATCH v2 05/10] hwmon: (fam15h_power) Add compute unit accumulated power

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Date:	Wed, 21 Oct 2015 11:04:01 +0800
From:	Huang Rui <ray.huang@....com>
To:	Guenter Roeck <linux@...ck-us.net>
CC:	kbuild test robot <lkp@...el.com>,
	Yuanhan Liu <yuanhan.liu@...ux.intel.com>,
	Fengguang Wu <fengguang.wu@...el.com>, <kbuild-all@...org>,
	Borislav Petkov <bp@...e.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Jean Delvare <jdelvare@...e.de>,
	Andy Lutomirski <luto@...capital.net>,
	Andreas Herrmann <herrmann.der.user@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	"John Stultz" <john.stultz@...aro.org>,
	Fr�d�ric Weisbecker <fweisbec@...il.com>,
	<lm-sensors@...sensors.org>, <linux-kernel@...r.kernel.org>,
	<x86@...nel.org>,
	Andreas Herrmann <herrmann.der.user@...glemail.com>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	Borislav Petkov <bp@...en8.de>, Aaron Lu <aaron.lu@...el.com>,
	Tony Li <tony.li@....com>
Subject: Re: [PATCH v2 05/10] hwmon: (fam15h_power) Add compute unit
 accumulated power

On Tue, Oct 20, 2015 at 07:49:53PM -0700, Guenter Roeck wrote:
> On 10/20/2015 07:40 PM, Huang Rui wrote:
> >On Tue, Oct 20, 2015 at 07:15:25PM -0700, Guenter Roeck wrote:
> >>On 10/20/2015 06:42 PM, Huang Rui wrote:
> >>>On Tue, Oct 20, 2015 at 03:24:09PM +0800, kbuild test robot wrote:
> >>>>Hi Huang,
> >>>>
> >>>>[auto build test ERROR on hwmon/hwmon-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]
> >>>>
> >>>>url:    https://github.com/0day-ci/linux/commits/Huang-Rui/hwmon-fam15h_power-Introduce-an-accumulated-power-reporting-algorithm/20151020-110712
> >>>>config: x86_64-randconfig-s2-10201413 (attached as .config)
> >>>>reproduce:
> >>>>         # save the attached .config to linux build tree
> >>>>         make ARCH=x86_64
> >>>>
> >>>>All errors (new ones prefixed by >>):
> >>>>
> >>>>    drivers/built-in.o: In function `fam15h_power_probe':
> >>>>>>fam15h_power.c:(.text+0x26e3a3): undefined reference to `amd_get_cores_per_cu'
> >>>>    fam15h_power.c:(.text+0x26e41e): undefined reference to `amd_get_cores_per_cu'
> >>>>
> >>>
> >>>Thanks to report this issue. :)
> >>>The root cause is that the test config doesn't enable
> >>>CONFIG_CPU_SUP_AMD.
> >>>
> >>>How about below fix:
> >>>
> >>
> >>Guess you don't have a choice.
> >>
> >
> >Yes, if I use test config, fam15h_power isn't chosen. :)
> >
> >And if I use the "select" flag like below, fam15h_power can be built
> >successfully.
> >
> That is another possibility, though that isn't how CPU_SUP_AMD
> is handled by its other users. Matter of philosophy, I guess.
> 

Err, sorry. Could you please point out the other possibility?

Thanks,
Rui
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