Messages in this thread | | | Date | Sat, 20 Aug 2022 06:51:11 +0800 | From | kernel test robot <> | Subject | arch/arm/mm/copypage-feroceon.c:65:6: warning: no previous prototype for 'feroceon_copy_user_highpage' |
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arch/arm/configs/am200epdkit_defconfig arch/arm/configs/cm_x300_defconfig arch/arm/configs/colibri_pxa270_defconfig arch/arm/configs/colibri_pxa300_defconfig arch/arm/configs/corgi_defconfig arch/arm/configs/eseries_pxa_defconfig arch/arm/configs/ezx_defconfig arch/arm/configs/h5000_defconfig arch/arm/configs/imote2_defconfig arch/arm/configs/lpd270_defconfig arch/arm/configs/lubbock_defconfig arch/arm/configs/magician_defconfig arch/arm/configs/mainstone_defconfig arch/arm/configs/palmz72_defconfig arch/arm/configs/pcm027_defconfig arch/arm/configs/pxa255-idp_defconfig arch/arm/configs/pxa3xx_defconfig arch/arm/configs/pxa_defconfig arch/arm/configs/spitz_defconfig arch/arm/configs/trizeps4_defconfig arch/arm/configs/viper_defconfig arch/arm/configs/xcep_defconfig arch/arm/configs/zeus_defconfig arch/arm/mach-pxa/Makefile.boot arch/arm/mach-pxa/include/mach/uncompress.h tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 50cd95ac46548429e5bba7ca75cc97d11a697947 commit: 250c1a694ff304e5d69e74ab32755eddcc2b8f65 ARM: pxa: convert to multiplatform date: 3 months ago config: arm-randconfig-c032-20220820 (https://download.01.org/0day-ci/archive/20220820/202208200632.qCY00XWl-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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/torvalds/linux.git/commit/?id=250c1a694ff304e5d69e74ab32755eddcc2b8f65 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 250c1a694ff304e5d69e74ab32755eddcc2b8f65 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mach-lpc32xx/ arch/arm/mach-versatile/ arch/arm/mm/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/gfp.h:6, from include/linux/xarray.h:15, from include/linux/list_lru.h:14, from include/linux/fs.h:13, from include/linux/highmem.h:5, from arch/arm/mm/copypage-feroceon.c:11: include/linux/mmzone.h: In function '__nr_to_section': include/linux/mmzone.h:1404:13: warning: the comparison will always evaluate as 'true' for the address of 'mem_section' will never be NULL [-Waddress] 1404 | if (!mem_section[SECTION_NR_TO_ROOT(nr)]) | ^ include/linux/mmzone.h:1390:27: note: 'mem_section' declared here 1390 | extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT]; | ^~~~~~~~~~~ arch/arm/mm/copypage-feroceon.c: At top level: >> arch/arm/mm/copypage-feroceon.c:65:6: warning: no previous prototype for 'feroceon_copy_user_highpage' [-Wmissing-prototypes] 65 | void feroceon_copy_user_highpage(struct page *to, struct page *from, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/arm/mm/copypage-feroceon.c:78:6: warning: no previous prototype for 'feroceon_clear_user_highpage' [-Wmissing-prototypes] 78 | void feroceon_clear_user_highpage(struct page *page, unsigned long vaddr) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from include/linux/topology.h:33, from include/linux/irq.h:19, from include/asm-generic/hardirq.h:17, from arch/arm/include/asm/hardirq.h:10, from include/linux/hardirq.h:11, from include/linux/interrupt.h:11, from include/linux/serial_core.h:13, from arch/arm/mach-lpc32xx/serial.c:13: include/linux/mmzone.h: In function '__nr_to_section': include/linux/mmzone.h:1404:13: warning: the comparison will always evaluate as 'true' for the address of 'mem_section' will never be NULL [-Waddress] 1404 | if (!mem_section[SECTION_NR_TO_ROOT(nr)]) | ^ include/linux/mmzone.h:1390:27: note: 'mem_section' declared here 1390 | extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT]; | ^~~~~~~~~~~ arch/arm/mach-lpc32xx/serial.c: At top level: >> arch/arm/mach-lpc32xx/serial.c:63:6: warning: no previous prototype for 'lpc32xx_loopback_set' [-Wmissing-prototypes] 63 | void lpc32xx_loopback_set(resource_size_t mapbase, int state) | ^~~~~~~~~~~~~~~~~~~~
vim +/feroceon_copy_user_highpage +65 arch/arm/mm/copypage-feroceon.c
d73e60b7144a86 Russell King 2008-10-31 64 063b0a4207e43a Russell King 2008-10-31 @65 void feroceon_copy_user_highpage(struct page *to, struct page *from, f00a75c094c340 Russell King 2009-10-05 66 unsigned long vaddr, struct vm_area_struct *vma) 063b0a4207e43a Russell King 2008-10-31 67 { 063b0a4207e43a Russell King 2008-10-31 68 void *kto, *kfrom; 063b0a4207e43a Russell King 2008-10-31 69 5472e862de2bc4 Cong Wang 2011-11-25 70 kto = kmap_atomic(to); 5472e862de2bc4 Cong Wang 2011-11-25 71 kfrom = kmap_atomic(from); 2725898fc9bb21 Russell King 2009-10-05 72 flush_cache_page(vma, vaddr, page_to_pfn(from)); 063b0a4207e43a Russell King 2008-10-31 73 feroceon_copy_user_page(kto, kfrom); 5472e862de2bc4 Cong Wang 2011-11-25 74 kunmap_atomic(kfrom); 5472e862de2bc4 Cong Wang 2011-11-25 75 kunmap_atomic(kto); 063b0a4207e43a Russell King 2008-10-31 76 } 063b0a4207e43a Russell King 2008-10-31 77 303c6443659bc1 Russell King 2008-10-31 @78 void feroceon_clear_user_highpage(struct page *page, unsigned long vaddr) d73e60b7144a86 Russell King 2008-10-31 79 { 5472e862de2bc4 Cong Wang 2011-11-25 80 void *ptr, *kaddr = kmap_atomic(page); 43ae286b7d4d8c Nicolas Pitre 2008-11-04 81 asm volatile ("\ 43ae286b7d4d8c Nicolas Pitre 2008-11-04 82 mov r1, %2 \n\ d73e60b7144a86 Russell King 2008-10-31 83 mov r2, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 84 mov r3, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 85 mov r4, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 86 mov r5, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 87 mov r6, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 88 mov r7, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 89 mov ip, #0 \n\ d73e60b7144a86 Russell King 2008-10-31 90 mov lr, #0 \n\ 303c6443659bc1 Russell King 2008-10-31 91 1: stmia %0, {r2-r7, ip, lr} \n\ d73e60b7144a86 Russell King 2008-10-31 92 subs r1, r1, #1 \n\ 303c6443659bc1 Russell King 2008-10-31 93 mcr p15, 0, %0, c7, c14, 1 @ clean and invalidate D line\n\ 43ae286b7d4d8c Nicolas Pitre 2008-11-04 94 add %0, %0, #32 \n\ d73e60b7144a86 Russell King 2008-10-31 95 bne 1b \n\ 303c6443659bc1 Russell King 2008-10-31 96 mcr p15, 0, r1, c7, c10, 4 @ drain WB" 43ae286b7d4d8c Nicolas Pitre 2008-11-04 97 : "=r" (ptr) 43ae286b7d4d8c Nicolas Pitre 2008-11-04 98 : "0" (kaddr), "I" (PAGE_SIZE / 32) 303c6443659bc1 Russell King 2008-10-31 99 : "r1", "r2", "r3", "r4", "r5", "r6", "r7", "ip", "lr"); 5472e862de2bc4 Cong Wang 2011-11-25 100 kunmap_atomic(kaddr); d73e60b7144a86 Russell King 2008-10-31 101 } d73e60b7144a86 Russell King 2008-10-31 102
:::::: The code at line 65 was first introduced by commit :::::: 063b0a4207e43acbeff3d4b09f43e750e0212b48 [ARM] copypage: provide our own copy_user_highpage()
:::::: TO: Russell King <rmk@dyn-67.arm.linux.org.uk> :::::: CC: Russell King <rmk+kernel@arm.linux.org.uk>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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