Re: [PATCH] perf/core: fast breakpoint modification via _IOC_MODIFY_BREAKPOINT.

From: kbuild test robot <lkp@intel.com>
To: Milind Chabbi <chabbi.milind@gmail.com>
Cc: kbuild-all@01.org, jolsa@redhat.com, chabbi.milind@gmail.com,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Andi Kleen <ak@linux.intel.com>,
	Hari Bathini <hbathini@linux.vnet.ibm.com>,
	Jin Yao <yao.jin@linux.intel.com>,
	Kan Liang <kan.liang@intel.com>,
	Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] perf/core: fast breakpoint modification via _IOC_MODIFY_BREAKPOINT.
Date: Wed, 8 Nov 2017 21:51:52 +0800	[thread overview]
Message-ID: <201711082133.Uss5n0XP%fengguang.wu@intel.com> (raw)
In-Reply-To: <1510006156-18988-1-git-send-email-chabbi.milind@gmail.com>

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Hi Milind,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/perf/core]
[also build test ERROR on v4.14-rc8 next-20171108]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Milind-Chabbi/perf-core-fast-breakpoint-modification-via-_IOC_MODIFY_BREAKPOINT/20171108-184959
config: arm-multi_v5_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   kernel/events/core.o: In function `_perf_ioctl':
>> core.c:(.text+0xa644): undefined reference to `validate_hw_breakpoint'

---
0-DAY kernel test infrastructure                Open Source Technology Center
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