Re: [PATCH v2 1/1] mm/cma: add 'available count' and 'total count' to trace_cma_alloc_start

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

Hi Xiang,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Xiang-Gao/mm-cma-add-available-count-and-total-count-to-trace_cma_alloc_start/20250820-105438
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/d30f91137e3a296152463ea65474e1ca56f4eda3.1755654367.git.gaoxiang17%40xiaomi.com
patch subject: [PATCH v2 1/1] mm/cma: add 'available count' and 'total count' to trace_cma_alloc_start
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20250821/202508210642.kUloVYxD-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250821/202508210642.kUloVYxD-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/202508210642.kUloVYxD-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/cma.c:31:
   In file included from include/trace/events/cma.h:138:
   In file included from include/trace/define_trace.h:132:
   In file included from include/trace/trace_events.h:468:
>> include/trace/events/cma.h:56:12: error: no member named 'count' in 'struct trace_event_raw_cma_alloc_start'
      56 |                 __entry->count = request_count;
         |                 ~~~~~~~  ^
   include/trace/stages/stage6_event_callback.h:133:33: note: expanded from macro 'TP_fast_assign'
     133 | #define TP_fast_assign(args...) args
         |                                 ^~~~
   include/trace/trace_events.h:44:16: note: expanded from macro 'TRACE_EVENT'
      44 |                              PARAMS(assign),                   \
         |                                     ^~~~~~
   include/linux/tracepoint.h:139:25: note: expanded from macro 'PARAMS'
     139 | #define PARAMS(args...) args
         |                         ^~~~
   include/trace/trace_events.h:435:16: note: expanded from macro 'DECLARE_EVENT_CLASS'
     435 |                       PARAMS(assign), PARAMS(print))                    \
         |                              ^~~~~~
   include/linux/tracepoint.h:139:25: note: expanded from macro 'PARAMS'
     139 | #define PARAMS(args...) args
         |                         ^~~~
   include/trace/trace_events.h:427:4: note: expanded from macro '\
   __DECLARE_EVENT_CLASS'
     427 |         { assign; }                                                     \
         |           ^~~~~~
   In file included from mm/cma.c:31:
   In file included from include/trace/events/cma.h:138:
   In file included from include/trace/define_trace.h:133:
   In file included from include/trace/perf.h:110:
>> include/trace/events/cma.h:56:12: error: no member named 'count' in 'struct trace_event_raw_cma_alloc_start'
      56 |                 __entry->count = request_count;
         |                 ~~~~~~~  ^
   include/trace/stages/stage6_event_callback.h:133:33: note: expanded from macro 'TP_fast_assign'
     133 | #define TP_fast_assign(args...) args
         |                                 ^~~~
   include/trace/trace_events.h:44:16: note: expanded from macro 'TRACE_EVENT'
      44 |                              PARAMS(assign),                   \
         |                                     ^~~~~~
   include/linux/tracepoint.h:139:25: note: expanded from macro 'PARAMS'
     139 | #define PARAMS(args...) args
         |                         ^~~~
   include/trace/perf.h:67:16: note: expanded from macro 'DECLARE_EVENT_CLASS'
      67 |                       PARAMS(assign), PARAMS(print))                    \
         |                              ^~~~~~
   include/linux/tracepoint.h:139:25: note: expanded from macro 'PARAMS'
     139 | #define PARAMS(args...) args
         |                         ^~~~
   include/trace/perf.h:51:4: note: expanded from macro '\
   __DECLARE_EVENT_CLASS'
      51 |         { assign; }                                                     \
         |           ^~~~~~
   2 errors generated.


vim +56 include/trace/events/cma.h

    40	
    41		TP_PROTO(const char *name, unsigned long request_count, unsigned long available_count,
    42			unsigned long total_count, unsigned int align),
    43	
    44		TP_ARGS(name, request_count, available_count, total_count, align),
    45	
    46		TP_STRUCT__entry(
    47			__string(name, name)
    48			__field(unsigned long, request_count)
    49			__field(unsigned long, available_count)
    50			__field(unsigned long, total_count)
    51			__field(unsigned int, align)
    52		),
    53	
    54		TP_fast_assign(
    55			__assign_str(name);
  > 56			__entry->count = request_count;
    57			__entry->available_count = available_count;
    58			__entry->total_count = total_count;
    59			__entry->align = align;
    60		),
    61	
    62		TP_printk("name=%s count=%lu request_count=%lu total_count=%lu align=%u",
    63			  __get_str(name),
    64			  __entry->request_count,
    65			  __entry->available_count,
    66			  __entry->total_count,
    67			  __entry->align)
    68	);
    69	

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