[android-common:android16-6.12 12/12] include/trace/stages/init.h:2:23: warning: 'str__vb2__trace_system_name' defined but not used

kernel test robot <[email protected]>
Newsgroups dev.linux.lists.oe-kbuild-all
Message-ID <[email protected]> 
Hi Hirokazu,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android16-6.12
head:   0fd55a309793adc6b8cddb5c29e80caa545ba4bb
commit: 9fdc7af173200d5b0ccddeb1223be296839029bf [12/12] ANDROID: vendor_hooks: Add hook for vb2
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20260719/[email protected]/config)
compiler: arm-linux-gnueabi-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260719/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/vb2.h:24,
                    from drivers/android/vendor_hooks.c:83:
>> include/trace/stages/init.h:2:23: warning: 'str__vb2__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~
   include/trace/stages/init.h:5:29: note: in expansion of macro '__app'
       5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
         |                             ^~~~~
   include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING'
       8 |         static const char TRACE_SYSTEM_STRING[] =       \
         |                           ^~~~~~~~~~~~~~~~~~~
   include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR'
      11 | TRACE_MAKE_SYSTEM_STR();
         | ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/dmv_debug.h:45,
                    from drivers/android/vendor_hooks.c:82:
   include/trace/stages/init.h:2:23: warning: 'str__dmv_debug__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~
   include/trace/stages/init.h:5:29: note: in expansion of macro '__app'
       5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
         |                             ^~~~~
   include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING'
       8 |         static const char TRACE_SYSTEM_STRING[] =       \
         |                           ^~~~~~~~~~~~~~~~~~~
   include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR'
      11 | TRACE_MAKE_SYSTEM_STR();
         | ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/kasan.h:18,
                    from drivers/android/vendor_hooks.c:81:
   include/trace/stages/init.h:2:23: warning: 'str__kasan__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~
   include/trace/stages/init.h:5:29: note: in expansion of macro '__app'
       5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
         |                             ^~~~~
   include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING'
       8 |         static const char TRACE_SYSTEM_STRING[] =       \
         |                           ^~~~~~~~~~~~~~~~~~~
   include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR'
      11 | TRACE_MAKE_SYSTEM_STR();
         | ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/usb.h:29,
                    from drivers/android/vendor_hooks.c:80:
   include/trace/stages/init.h:2:23: warning: 'str__usb__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~
   include/trace/stages/init.h:5:29: note: in expansion of macro '__app'
       5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
         |                             ^~~~~
   include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING'
       8 |         static const char TRACE_SYSTEM_STRING[] =       \
         |                           ^~~~~~~~~~~~~~~~~~~
   include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR'
      11 | TRACE_MAKE_SYSTEM_STR();
         | ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/gzvm.h:29,
                    from drivers/android/vendor_hooks.c:79:
   include/trace/stages/init.h:2:23: warning: 'str__gzvm__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~
   include/trace/stages/init.h:5:29: note: in expansion of macro '__app'
       5 | #define TRACE_SYSTEM_STRING __app(TRACE_SYSTEM_VAR,__trace_system_name)
         |                             ^~~~~
   include/trace/stages/init.h:8:27: note: in expansion of macro 'TRACE_SYSTEM_STRING'
       8 |         static const char TRACE_SYSTEM_STRING[] =       \
         |                           ^~~~~~~~~~~~~~~~~~~
   include/trace/stages/init.h:11:1: note: in expansion of macro 'TRACE_MAKE_SYSTEM_STR'
      11 | TRACE_MAKE_SYSTEM_STR();
         | ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/trace/trace_events.h:27,
                    from include/trace/define_trace.h:109,
                    from include/trace/hooks/user.h:21,
                    from drivers/android/vendor_hooks.c:78:
   include/trace/stages/init.h:2:23: warning: 'str__user__trace_system_name' defined but not used [-Wunused-const-variable=]
       2 | #define __app__(x, y) str__##x##y
         |                       ^~~~~
   include/trace/stages/init.h:3:21: note: in expansion of macro '__app__'
       3 | #define __app(x, y) __app__(x, y)
         |                     ^~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for INTEL_MEI_ME
   Depends on [n]: X86 && PCI [=y]
   Selected by [y]:
   - INTEL_MEI_HDCP [=y] && (DRM_I915 [=n] || DRM_XE [=y])
   - INTEL_MEI_PXP [=y] && (DRM_I915 [=n] || DRM_XE [=y])


vim +/str__vb2__trace_system_name +2 include/trace/stages/init.h

af6b9668e85ffd Steven Rostedt (Google  2022-03-03 @2) #define __app__(x, y) str__##x##y
af6b9668e85ffd Steven Rostedt (Google  2022-03-03  3) #define __app(x, y) __app__(x, y)
af6b9668e85ffd Steven Rostedt (Google  2022-03-03  4) 

:::::: The code at line 2 was first introduced by commit
:::::: af6b9668e85ffd1502aada8036ccbf4dbd481708 tracing: Move the defines to create TRACE_EVENTS into their own files

:::::: TO: Steven Rostedt (Google) <[email protected]>
:::::: CC: Steven Rostedt (Google) <[email protected]>

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