linux-kernel - Re: [PATCH v2 06/11] scsi: scsi_debug: Dynamically allocate sdebug_queued

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Date:   Fri, 24 Mar 2023 02:13:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     John Garry <john.g.garry@...cle.com>, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, dgilbert@...erlog.com
Cc:     oe-kbuild-all@...ts.linux.dev, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, bvanassche@....org,
        John Garry <john.g.garry@...cle.com>
Subject: Re: [PATCH v2 06/11] scsi: scsi_debug: Dynamically allocate
 sdebug_queued_cmd

Hi John,

I love your patch! Perhaps something to improve:

[auto build test WARNING on mkp-scsi/for-next]
[also build test WARNING on next-20230323]
[cannot apply to jejb-scsi/for-next linus/master v6.3-rc3]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/John-Garry/scsi-scsi_debug-Fix-check-for-sdev-queue-full/20230323-175305
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
patch link:    https://lore.kernel.org/r/20230323094555.584624-7-john.g.garry%40oracle.com
patch subject: [PATCH v2 06/11] scsi: scsi_debug: Dynamically allocate sdebug_queued_cmd
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20230324/202303240216.2NoF5RCq-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/be81e49de2c71f280dd3eac902d05afcb1061d12
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review John-Garry/scsi-scsi_debug-Fix-check-for-sdev-queue-full/20230323-175305
        git checkout be81e49de2c71f280dd3eac902d05afcb1061d12
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/scsi/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303240216.2NoF5RCq-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/scsi/scsi_debug.c:5579:27: warning: no previous prototype for 'sdebug_alloc_queued_cmd' [-Wmissing-prototypes]
    5579 | struct sdebug_queued_cmd *sdebug_alloc_queued_cmd(struct scsi_cmnd *scmd)
         |                           ^~~~~~~~~~~~~~~~~~~~~~~


vim +/sdebug_alloc_queued_cmd +5579 drivers/scsi/scsi_debug.c

  5578	
> 5579	struct sdebug_queued_cmd *sdebug_alloc_queued_cmd(struct scsi_cmnd *scmd)
  5580	{
  5581		struct sdebug_queued_cmd *sqcp = kmem_cache_zalloc(queued_cmd_cache, GFP_ATOMIC);
  5582		struct sdebug_defer *sd_dp;
  5583	
  5584		if (!sqcp)
  5585			return NULL;
  5586	
  5587		sd_dp = &sqcp->sd_dp;
  5588	
  5589		hrtimer_init(&sd_dp->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL_PINNED);
  5590		sd_dp->hrt.function = sdebug_q_cmd_hrt_complete;
  5591		INIT_WORK(&sd_dp->ew.work, sdebug_q_cmd_wq_complete);
  5592	
  5593		sqcp->scmd = scmd;
  5594		sd_dp->sqa_idx = -1;
  5595	
  5596		return sqcp;
  5597	}
  5598	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests