linux-kernel - RE: [PATCH V16 11/11] x86,cgroup/intel_rdt : Add a cgroup interface to manage Intel cache allocation

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Message-ID: <3E5A0FA7E9CA944F9D5414FEC6C712205DF59187@ORSMSX106.amr.corp.intel.com>
Date:	Mon, 4 Jan 2016 21:44:11 +0000
From:	"Yu, Fenghua" <fenghua.yu@...el.com>
To:	Richard Weinberger <richard.weinberger@...il.com>,
	Marcelo Tosatti <mtosatti@...hat.com>
CC:	Luiz Capitulino <lcapitulino@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Ingo Molnar <mingo@...e.hu>,
	"Luck, Tony" <tony.luck@...el.com>,
	"Shankar, Ravi V" <ravi.v.shankar@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Tejun Heo <tj@...nel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	x86 <x86@...nel.org>,
	Vikas Shivappa <vikas.shivappa@...ux.intel.com>
Subject: RE: [PATCH V16 11/11] x86,cgroup/intel_rdt : Add a cgroup interface
 to manage Intel cache allocation

> From: Richard Weinberger [mailto:richard.weinberger@...il.com]
> Sent: Saturday, January 02, 2016 2:54 PM
> On Mon, Dec 21, 2015 at 6:05 PM, Marcelo Tosatti <mtosatti@...hat.com>
> wrote:
> > OK cool hopefully that makes it clear to Fenghua Yu what must be
> > changed in the patchset.
> >
> >>  - http://lkml.iu.edu/hypermail/linux/kernel/1511.0/02375.html
> 
> ...beating a dead horse but this patch is in -next and breaks the ARCH=um
> build when enabled.
> 
>   UPD     include/generated/compile.h
>   CC      init/version.o
>   LD      init/built-in.o
> kernel/built-in.o:(.rodata+0x2920): undefined reference to
> `intel_rdt_cgrp_subsys'
> collect2: error: ld returned 1 exit status
> make: *** [vmlinux] Error 1

Do you set CONFIG_INTEL_RDT=y?

Thanks.

-Fenghua