linux-kernel - Re: [PATCH v5 1/6] cgroup/cpuset: Properly transition to invalid partition

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Message-ID: <150a4d86-3e50-67be-af2b-32dd8df0db3c@redhat.com>
Date:   Sat, 14 Aug 2021 16:54:46 -0400
From:   Waiman Long <llong@...hat.com>
To:     kernel test robot <lkp@...el.com>, Tejun Heo <tj@...nel.org>,
        Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Corbet <corbet@....net>,
        Shuah Khan <skhan@...uxfoundation.org>
Cc:     kbuild-all@...ts.01.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v5 1/6] cgroup/cpuset: Properly transition to invalid
 partition

On 8/14/21 4:21 PM, kernel test robot wrote:
> Hi Waiman,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on cgroup/for-next]
> [also build test WARNING on next-20210813]
> [cannot apply to kselftest/next v5.14-rc5]
> [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/Waiman-Long/cgroup-cpuset-Add-new-cpuset-partition-type-empty-effecitve-cpus/20210815-014333
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next
> config: ia64-defconfig (attached as .config)
> compiler: ia64-linux-gcc (GCC) 11.2.0
> 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/56ec7dd271c77e3cc92f0df6fd766004a7a0aa88
>          git remote add linux-review https://github.com/0day-ci/linux
>          git fetch --no-tags linux-review Waiman-Long/cgroup-cpuset-Add-new-cpuset-partition-type-empty-effecitve-cpus/20210815-014333
>          git checkout 56ec7dd271c77e3cc92f0df6fd766004a7a0aa88
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
> All warnings (new ones prefixed by >>):
>
>     kernel/cgroup/cpuset.c: In function 'update_prstate':

Oh, it was caused by a duplicated tmpmask in update_prstate() which 
isn't really necessary. Will send out a new version to fix that.

Thanks,
Longman