Re: [PATCH v2 4/7] kexec_file, arm64: print out debugging message if required

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Hi Baoquan,

kernel test robot noticed the following build errors:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on tip/x86/core powerpc/next powerpc/fixes linus/master v6.7-rc2 next-20231124]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/kexec_file-add-kexec_file-flag-to-control-debug-printing/20231124-113942
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link:    https://lore.kernel.org/r/20231124033642.520686-5-bhe%40redhat.com
patch subject: [PATCH v2 4/7] kexec_file, arm64: print out debugging message if required
config: arm64-randconfig-001-20231126 (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311260548.1HaxcDnE-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311260548.1HaxcDnE-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> arch/arm64/kernel/machine_kexec.c:35:2: error: implicit declaration of function 'kexec_dprintk' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
           kexec_dprintk("%s:%d:\n", func, line);
           ^
   1 error generated.


vim +/kexec_dprintk +35 arch/arm64/kernel/machine_kexec.c

    27	
    28	/**
    29	 * kexec_image_info - For debugging output.
    30	 */
    31	#define kexec_image_info(_i) _kexec_image_info(__func__, __LINE__, _i)
    32	static void _kexec_image_info(const char *func, int line,
    33		const struct kimage *kimage)
    34	{
  > 35		kexec_dprintk("%s:%d:\n", func, line);
    36		kexec_dprintk("  kexec kimage info:\n");
    37		kexec_dprintk("    type:        %d\n", kimage->type);
    38		kexec_dprintk("    head:        %lx\n", kimage->head);
    39		kexec_dprintk("    kern_reloc: %pa\n", &kimage->arch.kern_reloc);
    40		kexec_dprintk("    el2_vectors: %pa\n", &kimage->arch.el2_vectors);
    41	}
    42	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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