Re: [dm-devel] [PATCH v15 12/12] null_blk: add support for copy offload

[kernel test robot <lkp@intel.com>]

Hi Nitesh,

kernel test robot noticed the following build warnings:

[auto build test WARNING on c50216cfa084d5eb67dc10e646a3283da1595bb6]

url:    https://github.com/intel-lab-lkp/linux/commits/Nitesh-Shetty/block-Introduce-queue-limits-and-sysfs-for-copy-offload-support/20230907-015817
base:   c50216cfa084d5eb67dc10e646a3283da1595bb6
patch link:    https://lore.kernel.org/r/20230906163844.18754-13-nj.shetty%40samsung.com
patch subject: [PATCH v15 12/12] null_blk: add support for copy offload
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20230907/202309070607.akFEF327-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230907/202309070607.akFEF327-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309070607.akFEF327-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:102,
                    from drivers/block/null_blk/trace.h:104,
                    from drivers/block/null_blk/main.c:15:
   drivers/block/null_blk/./trace.h: In function 'trace_raw_output_nullb_copy_op':
>> drivers/block/null_blk/./trace.h:91:27: warning: format '%lu' expects argument of type 'long unsigned int', but argument 7 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
      91 |                 TP_printk("%s req=%-15s: dst=%llu, src=%llu, len=%lu",
         |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/trace/trace_events.h:203:34: note: in definition of macro 'DECLARE_EVENT_CLASS'
     203 |         trace_event_printf(iter, print);                                \
         |                                  ^~~~~
   include/trace/trace_events.h:45:30: note: in expansion of macro 'PARAMS'
      45 |                              PARAMS(print));                   \
         |                              ^~~~~~
   drivers/block/null_blk/./trace.h:73:1: note: in expansion of macro 'TRACE_EVENT'
      73 | TRACE_EVENT(nullb_copy_op,
         | ^~~~~~~~~~~
   drivers/block/null_blk/./trace.h:91:17: note: in expansion of macro 'TP_printk'
      91 |                 TP_printk("%s req=%-15s: dst=%llu, src=%llu, len=%lu",
         |                 ^~~~~~~~~
   In file included from include/trace/trace_events.h:237:
   drivers/block/null_blk/./trace.h:91:68: note: format string is defined here
      91 |                 TP_printk("%s req=%-15s: dst=%llu, src=%llu, len=%lu",
         |                                                                  ~~^
         |                                                                    |
         |                                                                    long unsigned int
         |                                                                  %u


vim +91 drivers/block/null_blk/./trace.h

    72	
    73	TRACE_EVENT(nullb_copy_op,
    74			TP_PROTO(struct request *req,
    75				 sector_t dst, sector_t src, size_t len),
    76			TP_ARGS(req, dst, src, len),
    77			TP_STRUCT__entry(
    78					 __array(char, disk, DISK_NAME_LEN)
    79					 __field(enum req_op, op)
    80					 __field(sector_t, dst)
    81					 __field(sector_t, src)
    82					 __field(size_t, len)
    83			),
    84			TP_fast_assign(
    85				       __entry->op = req_op(req);
    86				       __assign_disk_name(__entry->disk, req->q->disk);
    87				       __entry->dst = dst;
    88				       __entry->src = src;
    89				       __entry->len = len;
    90			),
  > 91			TP_printk("%s req=%-15s: dst=%llu, src=%llu, len=%lu",
    92				  __print_disk_name(__entry->disk),
    93				  blk_op_str(__entry->op),
    94				  __entry->dst, __entry->src, __entry->len)
    95	);
    96	#endif /* _TRACE_NULLB_H */
    97	

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