Messages in this thread |  | | Date | Sat, 23 Apr 2022 15:30:18 +0800 | From | kernel test robot <> | Subject | Re: [PATCH v2 05/11] smp: replace smp_call_function_single_async() with smp_call_private() |
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Hi Donghai,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on powerpc/next] [also build test WARNING on rafael-pm/linux-next linus/master v5.18-rc3 next-20220422] [cannot apply to tip/x86/core] [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/intel-lab-lkp/linux/commits/Donghai-Qiao/smp-cross-CPU-call-interface/20220423-060436 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220423/202204231532.nXbSK9Tk-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280) 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/intel-lab-lkp/linux/commit/3b8a90029bebdb77e2d5c0cd16f371e83d8ed2e8 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Donghai-Qiao/smp-cross-CPU-call-interface/20220423-060436 git checkout 3b8a90029bebdb77e2d5c0cd16f371e83d8ed2e8 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> block/blk-mq.c:1065:39: warning: passing 4-byte aligned argument to 16-byte aligned parameter 2 of 'smp_call_private' may result in an unaligned pointer access [-Walign-mismatch] smp_call_function_single_async(cpu, &rq->csd); ^ 1 warning generated.
vim +/smp_call_private +1065 block/blk-mq.c
963395269c7586 Christoph Hellwig 2020-06-11 1055 f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1056 static void blk_mq_complete_send_ipi(struct request *rq) f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1057 { f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1058 struct llist_head *list; f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1059 unsigned int cpu; f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1060 f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1061 cpu = rq->mq_ctx->cpu; f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1062 list = &per_cpu(blk_cpu_done, cpu); f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1063 if (llist_add(&rq->ipi_list, list)) { f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1064 INIT_CSD(&rq->csd, __blk_mq_complete_request_remote, rq); f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 @1065 smp_call_function_single_async(cpu, &rq->csd); f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1066 } f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1067 } f9ab49184af093 Sebastian Andrzej Siewior 2021-01-23 1068
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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