[kbuild-all] [arm-integrator:kernel-in-vmalloc-v5.12-rc1 2/6] arch/arm/mm/init.c:296:13: warning: no previous prototype for 'mem_init_print_arm_info'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.12-rc1 head: 7b99ca2d1494c9431f36164db472b70852ad9bf6 commit: 678cdec93763be3599aab4ded32b5d719f2e1942 [2/6] ARM: Print virtual memory info again config: arm-randconfig-r013-20210413 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.g... git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git git fetch --no-tags arm-integrator kernel-in-vmalloc-v5.12-rc1 git checkout 678cdec93763be3599aab4ded32b5d719f2e1942 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): arch/arm/mm/init.c:97:13: warning: no previous prototype for 'setup_dma_zone' [-Wmissing-prototypes] 97 | void __init setup_dma_zone(const struct machine_desc *mdesc) | ^~~~~~~~~~~~~~ 296 | void __init mem_init_print_arm_info(void) | ^~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/printk.h:7, from include/linux/kernel.h:16, from arch/arm/mm/init.c:7: arch/arm/mm/init.c: In function 'mem_init_print_arm_info': 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:13:21: note: in expansion of macro 'KERN_SOH' 13 | #define KERN_NOTICE KERN_SOH "5" /* normal but significant condition */ | ^~~~~~~~ include/linux/printk.h:363:9: note: in expansion of macro 'KERN_NOTICE' 363 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~~~ arch/arm/mm/init.c:299:2: note: in expansion of macro 'pr_notice' 299 | pr_notice("Virtual kernel memory layout:\n" | ^~~~~~~~~ arch/arm/mm/init.c:300:26: note: format string is defined here 300 | " fixmap : 0x%08lx - 0x%08lx (%4ld MB)\n" | ~~~~^ | | | long unsigned int | %08s In file included from include/linux/printk.h:7, from include/linux/kernel.h:16, from arch/arm/mm/init.c:7: 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:13:21: note: in expansion of macro 'KERN_SOH' 13 | #define KERN_NOTICE KERN_SOH "5" /* normal but significant condition */ | ^~~~~~~~ include/linux/printk.h:363:9: note: in expansion of macro 'KERN_NOTICE' 363 | printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~~~ arch/arm/mm/init.c:299:2: note: in expansion of macro 'pr_notice' 299 | pr_notice("Virtual kernel memory layout:\n" | ^~~~~~~~~ In file included from arch/arm/mm/init.c:36: At top level: arch/arm/include/asm/fixmap.h:39:35: warning: '__end_of_fixed_addresses' defined but not used [-Wunused-const-variable=] 39 | static const enum fixed_addresses __end_of_fixed_addresses = | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/mem_init_print_arm_info +296 arch/arm/mm/init.c 295 297 { 298 #define MLM(b, t) b, t, ((t) - (b)) >> 20 299 pr_notice("Virtual kernel memory layout:\n" 300 " fixmap : 0x%08lx - 0x%08lx (%4ld MB)\n" 301 " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" 302 " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n" 303 #ifdef CONFIG_MODULES 304 " modules : 0x%08lx - 0x%08lx (%4ld MB)\n", 305 #endif 306 " kernel : 0x%08lx - 0x%08lx (%4ld MB)\n", 307 MLM(FIXADDR_START, FIXADDR_END), 308 MLM(VMALLOC_START, VMALLOC_END), 309 MLM(PAGE_OFFSET, (unsigned long)high_memory), 310 #ifdef CONFIG_MODULES 311 MLM(MODULES_VADDR, MODULES_END), 312 #endif 313 /* From beginning of .text to end of .bss */ 314 MLM((unsigned long)_text, (unsigned long)__bss_stop)); 315 #undef MLM 316 } 317 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org