linux-kernel - Re: [PATCH] bfq: don't check active group if bfq.weight is not changed

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Date:   Fri, 15 Jan 2021 21:35:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Yu Kuai <yukuai3@...wei.com>, tj@...nel.org, axboe@...nel.dk,
        paolo.valente@...aro.org
Cc:     kbuild-all@...ts.01.org, cgroups@...r.kernel.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yukuai3@...wei.com, yi.zhang@...wei.com
Subject: Re: [PATCH] bfq: don't check active group if bfq.weight is not
 changed

Hi Yu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on block/for-next]
[also build test ERROR on v5.11-rc3 next-20210115]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Yu-Kuai/bfq-don-t-check-active-group-if-bfq-weight-is-not-changed/20210115-112031
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/2a2ab6f73f0608cec85e1f15254edc78a75d0366
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Yu-Kuai/bfq-don-t-check-active-group-if-bfq-weight-is-not-changed/20210115-112031
        git checkout 2a2ab6f73f0608cec85e1f15254edc78a75d0366
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__bad_cmpxchg" [block/bfq.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (78467 bytes)