linux-kernel - [mark:arm64/ftrace/minimal-regs 4/5] arch/powerpc/include/asm/ftrace.h:50:35: error: incomplete definition of type 'struct ftrace

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Date:   Thu, 13 Oct 2022 03:57:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Florent Revest <revest@...omium.org>
Subject: [mark:arm64/ftrace/minimal-regs 4/5]
 arch/powerpc/include/asm/ftrace.h:50:35: error: incomplete definition of
 type 'struct ftrace_refs'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ftrace/minimal-regs
head:   a6fb93c9bc584bf123d18caa80dd6f7a083c272b
commit: c4373895d771e6d7a11f9749db5ebf2f4920ca58 [4/5] ftrace: abstract DYNAMIC_FTRACE_WITH_ARGS accesses
config: powerpc-randconfig-r006-20221012
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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 powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id=c4373895d771e6d7a11f9749db5ebf2f4920ca58
        git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark arm64/ftrace/minimal-regs
        git checkout c4373895d771e6d7a11f9749db5ebf2f4920ca58
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc prepare

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

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

   In file included from arch/powerpc/kernel/asm-offsets.c:36:
   In file included from arch/powerpc/include/asm/dbell.h:17:
   In file included from arch/powerpc/include/asm/kvm_ppc.h:19:
   In file included from include/linux/kvm_host.h:32:
   In file included from include/linux/ftrace.h:23:
>> arch/powerpc/include/asm/ftrace.h:48:50: warning: declaration of 'struct ftrace_refs' will not be visible outside of this function [-Wvisibility]
   ftrace_regs_get_instruction_pointer(const struct ftrace_refs *fregs)
                                                    ^
>> arch/powerpc/include/asm/ftrace.h:50:35: error: incomplete definition of type 'struct ftrace_refs'
           return instruction_pointer(&fregs->regs)
                                       ~~~~~^
   arch/powerpc/include/asm/ftrace.h:48:50: note: forward declaration of 'struct ftrace_refs'
   ftrace_regs_get_instruction_pointer(const struct ftrace_refs *fregs)
                                                    ^
>> arch/powerpc/include/asm/ftrace.h:50:42: error: expected ';' after return statement
           return instruction_pointer(&fregs->regs)
                                                   ^
                                                   ;
   1 warning and 2 errors generated.
   make[2]: *** [scripts/Makefile.build:118: arch/powerpc/kernel/asm-offsets.s] Error 1
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:1270: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:231: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +50 arch/powerpc/include/asm/ftrace.h

    46	
    47	static __always_inline unsigned long
  > 48	ftrace_regs_get_instruction_pointer(const struct ftrace_refs *fregs)
    49	{
  > 50		return instruction_pointer(&fregs->regs)
    51	}
    52	

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

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