linux-kernel - Re: [PATCH 7/7] blk-mq: build default queue map via group_cpus

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Date:   Mon, 16 Aug 2021 15:23:53 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     kernel test robot <lkp@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Jens Axboe <axboe@...nel.dk>,
        clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 7/7] blk-mq: build default queue map via
 group_cpus_evenly()

Hello,

On Sun, Aug 15, 2021 at 04:49:25AM +0800, kernel test robot wrote:
> Hi Ming,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on tip/irq/core]
> [also build test ERROR on next-20210813]
> [cannot apply to block/for-next linux/master linus/master 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/Ming-Lei/genirq-affinity-abstract-new-API-from-managed-irq-affinity-spread/20210814-203741
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 04c2721d3530f0723b4c922a8fa9f26b202a20de
> config: riscv-buildonly-randconfig-r005-20210814 (attached as .config)
> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1f7b25ea76a925aca690da28de9d78db7ca99d0c)
> 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/46b1d0ed609db266f6f18e7156c4f294bf6c4502
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Ming-Lei/genirq-affinity-abstract-new-API-from-managed-irq-affinity-spread/20210814-203741
>         git checkout 46b1d0ed609db266f6f18e7156c4f294bf6c4502
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from block/blk-mq-cpumap.c:13:
> >> include/linux/group_cpus.h:17:26: error: implicit declaration of function 'kcalloc' [-Werror,-Wimplicit-function-declaration]
>            struct cpumask *masks = kcalloc(numgrps, sizeof(*masks), GFP_KERNEL);
>                                    ^
>    include/linux/group_cpus.h:17:26: note: did you mean 'kvcalloc'?
>    include/linux/mm.h:827:21: note: 'kvcalloc' declared here
>    static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
>                        ^
>    In file included from block/blk-mq-cpumap.c:13:
> >> include/linux/group_cpus.h:17:18: warning: incompatible integer to pointer conversion initializing 'struct cpumask *' with an expression of type 'int' [-Wint-conversion]
>            struct cpumask *masks = kcalloc(numgrps, sizeof(*masks), GFP_KERNEL);
>                            ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Will fix it in next version, and it can be done by include <linux/slab.h> into
include/linux/group_cpus.h.


Thanks,
Ming