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* [tglx-devel:rtmutex 12/62] kernel/locking/locktorture.c:468:8: error: implicit declaration of function '__RT_MUTEX_BASE_INITIALIZE'
@ 2021-07-27 20:40 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-07-27 20:40 UTC (permalink / raw)
  To: Peter Zijlstra
  Cc: clang-built-linux, kbuild-all, linux-kernel, Thomas Gleixner

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git rtmutex
head:   464d92f29d4fc8581adb0dc25bb8c1d108452fa6
commit: 62ee7142ca57390ba70945e6180e05f4fb1fc73b [12/62] rtmutex: Split out the inner parts of struct rtmutex
config: x86_64-randconfig-a003-20210727 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c658b472f3e61e1818e1909bf02f3d65470018a5)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id=62ee7142ca57390ba70945e6180e05f4fb1fc73b
        git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
        git fetch --no-tags tglx-devel rtmutex
        git checkout 62ee7142ca57390ba70945e6180e05f4fb1fc73b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All error/warnings (new ones prefixed by >>):

>> kernel/locking/locktorture.c:468:8: error: implicit declaration of function '__RT_MUTEX_BASE_INITIALIZE' [-Werror,-Wimplicit-function-declaration]
   static DEFINE_RT_MUTEX(torture_rtmutex);
          ^
   include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
           struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
                                       ^
   include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
           .rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex)        \
                      ^
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
   static DEFINE_RT_MUTEX(torture_rtmutex);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
           struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
           .rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex)        \
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
   static DEFINE_RT_MUTEX(torture_rtmutex);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
           struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
           .rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex)        \
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: warning: suggest braces around initialization of subobject [-Wmissing-braces]
   static DEFINE_RT_MUTEX(torture_rtmutex);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
           struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
           .rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex)        \
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/locktorture.c:468:8: error: initializer element is not a compile-time constant
   static DEFINE_RT_MUTEX(torture_rtmutex);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:81:30: note: expanded from macro 'DEFINE_RT_MUTEX'
           struct rt_mutex mutexname = __RT_MUTEX_INITIALIZER(mutexname)
                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/rtmutex.h:76:13: note: expanded from macro '__RT_MUTEX_INITIALIZER'
           .rtmutex = __RT_MUTEX_BASE_INITIALIZE(mutexname.rtmutex)        \
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   3 warnings and 2 errors generated.


vim +/__RT_MUTEX_BASE_INITIALIZE +468 kernel/locking/locktorture.c

0186a6cbdc6287 Chris Wilson    2016-12-01  466  
095777c417db14 Davidlohr Bueso 2015-07-22  467  #ifdef CONFIG_RT_MUTEXES
095777c417db14 Davidlohr Bueso 2015-07-22 @468  static DEFINE_RT_MUTEX(torture_rtmutex);
095777c417db14 Davidlohr Bueso 2015-07-22  469  

:::::: The code at line 468 was first introduced by commit
:::::: 095777c417db142970adeb776fa0cb10810b8122 locktorture: Support rtmutex torturing

:::::: TO: Davidlohr Bueso <dave@stgolabs.net>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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