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* [bvanassche:tracing 2/2] include/linux/compiler.h:246:47: error: ordered comparison of pointer with null pointer
@ 2022-08-25 13:15 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-08-25 13:15 UTC (permalink / raw)
  To: Bart Van Assche; +Cc: kbuild-all, linux-kernel

tree:   https://github.com/bvanassche/linux tracing
head:   e50691460d5ea5a49b903e0ea50276e942b6f34f
commit: e50691460d5ea5a49b903e0ea50276e942b6f34f [2/2] tracing: Define is_signed_type() once
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220825/202208252159.T4WiCecR-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/bvanassche/linux/commit/e50691460d5ea5a49b903e0ea50276e942b6f34f
        git remote add bvanassche https://github.com/bvanassche/linux
        git fetch --no-tags bvanassche tracing
        git checkout e50691460d5ea5a49b903e0ea50276e942b6f34f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:102,
                    from drivers/gpu/drm/i915/gvt/trace.h:383,
                    from drivers/gpu/drm/i915/gvt/trace_points.c:33:
>> include/linux/compiler.h:246:47: error: ordered comparison of pointer with null pointer [-Werror=extra]
     246 | #define is_signed_type(type)    (((type)(-1)) <= (type)0)
         |                                               ^~
   include/trace/trace_events.h:244:9: note: in definition of macro 'DECLARE_EVENT_CLASS'
     244 |         tstruct                                                         \
         |         ^~~~~~~
   include/trace/trace_events.h:43:30: note: in expansion of macro 'PARAMS'
      43 |                              PARAMS(tstruct),                  \
         |                              ^~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:42:1: note: in expansion of macro 'TRACE_EVENT'
      42 | TRACE_EVENT(spt_alloc,
         | ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:48:9: note: in expansion of macro 'TP_STRUCT__entry'
      48 |         TP_STRUCT__entry(
         |         ^~~~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:11:22: note: in expansion of macro 'is_signed_type'
      11 |         .is_signed = is_signed_type(_type), .filter_type = _filter_type },
         |                      ^~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:20:33: note: in expansion of macro '__field_ext'
      20 | #define __field(type, item)     __field_ext(type, item, FILTER_OTHER)
         |                                 ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:50:17: note: in expansion of macro '__field'
      50 |                 __field(void *, spt)
         |                 ^~~~~~~
>> include/linux/compiler.h:246:47: error: ordered comparison of pointer with null pointer [-Werror=extra]
     246 | #define is_signed_type(type)    (((type)(-1)) <= (type)0)
         |                                               ^~
   include/trace/trace_events.h:244:9: note: in definition of macro 'DECLARE_EVENT_CLASS'
     244 |         tstruct                                                         \
         |         ^~~~~~~
   include/trace/trace_events.h:43:30: note: in expansion of macro 'PARAMS'
      43 |                              PARAMS(tstruct),                  \
         |                              ^~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:72:1: note: in expansion of macro 'TRACE_EVENT'
      72 | TRACE_EVENT(spt_free,
         | ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:77:9: note: in expansion of macro 'TP_STRUCT__entry'
      77 |         TP_STRUCT__entry(
         |         ^~~~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:11:22: note: in expansion of macro 'is_signed_type'
      11 |         .is_signed = is_signed_type(_type), .filter_type = _filter_type },
         |                      ^~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:20:33: note: in expansion of macro '__field_ext'
      20 | #define __field(type, item)     __field_ext(type, item, FILTER_OTHER)
         |                                 ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:79:17: note: in expansion of macro '__field'
      79 |                 __field(void *, spt)
         |                 ^~~~~~~
>> include/linux/compiler.h:246:47: error: ordered comparison of pointer with null pointer [-Werror=extra]
     246 | #define is_signed_type(type)    (((type)(-1)) <= (type)0)
         |                                               ^~
   include/trace/trace_events.h:244:9: note: in definition of macro 'DECLARE_EVENT_CLASS'
     244 |         tstruct                                                         \
         |         ^~~~~~~
   include/trace/trace_events.h:43:30: note: in expansion of macro 'PARAMS'
      43 |                              PARAMS(tstruct),                  \
         |                              ^~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:228:1: note: in expansion of macro 'TRACE_EVENT'
     228 | TRACE_EVENT(gvt_command,
         | ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:236:9: note: in expansion of macro 'TP_STRUCT__entry'
     236 |         TP_STRUCT__entry(
         |         ^~~~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:11:22: note: in expansion of macro 'is_signed_type'
      11 |         .is_signed = is_signed_type(_type), .filter_type = _filter_type },
         |                      ^~~~~~~~~~~~~~
   include/trace/stages/stage4_event_fields.h:20:33: note: in expansion of macro '__field_ext'
      20 | #define __field(type, item)     __field_ext(type, item, FILTER_OTHER)
         |                                 ^~~~~~~~~~~
   include/trace/../../drivers/gpu/drm/i915/gvt/trace.h:243:17: note: in expansion of macro '__field'
     243 |                 __field(void*, workload)
         |                 ^~~~~~~
   cc1: all warnings being treated as errors


vim +246 include/linux/compiler.h

   241	
   242	/*
   243	 * Whether 'type' is a signed type or an unsigned type. Supports scalar types,
   244	 * bool and also pointer types.
   245	 */
 > 246	#define is_signed_type(type)	(((type)(-1)) <= (type)0)
   247	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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2022-08-25 13:15 [bvanassche:tracing 2/2] include/linux/compiler.h:246:47: error: ordered comparison of pointer with null pointer kernel test robot

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