tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.tmp2 head: adcceb5eb7aee38e4a9c15bdf599655f0e1b1324 commit: 8ba52e725f44d3c1da94670a29614b683e286c5a [336/364] sched/headers, mm: Simplify <linux/slab.h>'s header file dependencies config: um-x86_64_defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=8b... git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip tmp.tmp2 git checkout 8ba52e725f44d3c1da94670a29614b683e286c5a # save the attached .config to linux build tree make W=1 ARCH=um SUBARCH=x86_64 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/x86/um/user-offsets.c:18:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 18 | void foo(void) | ^~~ In file included from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 11 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/page.h:14: note: this is the location of the previous definition 14 | #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) | In file included from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 36 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/page.h:93: note: this is the location of the previous definition 93 | #define PAGE_OFFSET (uml_physmem) | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 15 | #define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) | In file included from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/thread_info.h:9: note: this is the location of the previous definition 9 | #define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 16 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | In file included from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/thread_info.h:10: note: this is the location of the previous definition 10 | #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) | In file included from ./arch/um/include/generated/asm/preempt.h:1, from include/linux/preempt.h:80, from include/linux/spinlock.h:53, from include/linux/swait.h:7, from include/linux/completion.h:12, from include/linux/crypto.h:21, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: include/asm-generic/preempt.h: In function '__preempt_count_dec_and_test': include/asm-generic/preempt.h:69:36: error: implicit declaration of function 'tif_need_resched' [-Werror=implicit-function-declaration] 69 | return !--*preempt_count_ptr() && tif_need_resched(); | ^~~~~~~~~~~~~~~~ In file included from arch/x86/um/asm/processor.h:41, from include/linux/spinlock_up.h:8, from include/linux/spinlock.h:93, from include/linux/swait.h:7, from include/linux/completion.h:12, from include/linux/crypto.h:21, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/processor-generic.h: At top level: 71 | #define TASK_SIZE (task_size) | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: arch/x86/include/asm/page_64_types.h:75: note: this is the location of the previous definition 75 | #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \ | In file included from arch/um/kernel/asm-offsets.c:1: arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 9 | void foo(void) | ^~~ In file included from arch/x86/um/shared/sysdep/kernel-offsets.h:6, from arch/um/kernel/asm-offsets.c:1: arch/um/include/shared/common-offsets.h: In function 'foo': arch/um/include/shared/common-offsets.h:26:15: error: 'HZ' undeclared (first use in this function) 26 | DEFINE(UM_HZ, HZ); | ^~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val)) | ^~~ arch/um/include/shared/common-offsets.h:26:15: note: each undeclared identifier is reported only once for each function it appears in 26 | DEFINE(UM_HZ, HZ); | ^~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val)) | ^~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:117: arch/um/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1232: prepare0] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- arch/x86/um/user-offsets.c:18:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 18 | void foo(void) | ^~~ In file included from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 11 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/page.h:14: note: this is the location of the previous definition 14 | #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) | In file included from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 36 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/page.h:93: note: this is the location of the previous definition 93 | #define PAGE_OFFSET (uml_physmem) | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 15 | #define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) | In file included from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/thread_info.h:9: note: this is the location of the previous definition 9 | #define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: 16 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | In file included from include/linux/thread_info.h:52, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/sched.h:18, from arch/x86/um/shared/sysdep/kernel-offsets.h:3, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/thread_info.h:10: note: this is the location of the previous definition 10 | #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) | In file included from ./arch/um/include/generated/asm/preempt.h:1, from include/linux/preempt.h:80, from include/linux/spinlock.h:53, from include/linux/swait.h:7, from include/linux/completion.h:12, from include/linux/crypto.h:21, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: include/asm-generic/preempt.h: In function '__preempt_count_dec_and_test': include/asm-generic/preempt.h:69:36: error: implicit declaration of function 'tif_need_resched' [-Werror=implicit-function-declaration] 69 | return !--*preempt_count_ptr() && tif_need_resched(); | ^~~~~~~~~~~~~~~~ In file included from arch/x86/um/asm/processor.h:41, from include/linux/spinlock_up.h:8, from include/linux/spinlock.h:93, from include/linux/swait.h:7, from include/linux/completion.h:12, from include/linux/crypto.h:21, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: arch/um/include/asm/processor-generic.h: At top level: 71 | #define TASK_SIZE (task_size) | In file included from arch/x86/include/asm/page_types.h:46, from include/linux/slab.h:20, from include/linux/crypto.h:20, from arch/x86/um/shared/sysdep/kernel-offsets.h:5, from arch/um/kernel/asm-offsets.c:1: arch/x86/include/asm/page_64_types.h:75: note: this is the location of the previous definition 75 | #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \ | In file included from arch/um/kernel/asm-offsets.c:1: arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 9 | void foo(void) | ^~~ In file included from arch/x86/um/shared/sysdep/kernel-offsets.h:6, from arch/um/kernel/asm-offsets.c:1: arch/um/include/shared/common-offsets.h: In function 'foo': arch/um/include/shared/common-offsets.h:26:15: error: 'HZ' undeclared (first use in this function) 26 | DEFINE(UM_HZ, HZ); | ^~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val)) | ^~~ arch/um/include/shared/common-offsets.h:26:15: note: each undeclared identifier is reported only once for each function it appears in 26 | DEFINE(UM_HZ, HZ); | ^~ include/linux/kbuild.h:6:62: note: in definition of macro 'DEFINE' 6 | asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val)) | ^~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:117: arch/um/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1232: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/PAGE_SIZE +11 arch/x86/include/asm/page_types.h 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 8 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 9 /* PAGE_SHIFT determines the page size */ 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 10 #define PAGE_SHIFT 12 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 @11 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 12 #define PAGE_MASK (~(PAGE_SIZE-1)) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 13 70f1528747651b Kirill A. Shutemov 2015-11-30 14 #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) 70f1528747651b Kirill A. Shutemov 2015-11-30 15 #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) 70f1528747651b Kirill A. Shutemov 2015-11-30 16 70f1528747651b Kirill A. Shutemov 2015-11-30 17 #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) 70f1528747651b Kirill A. Shutemov 2015-11-30 18 #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) 70f1528747651b Kirill A. Shutemov 2015-11-30 19 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 20 #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 21 70f1528747651b Kirill A. Shutemov 2015-11-30 22 /* Cast *PAGE_MASK to a signed type so that it is sign-extended if 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 23 virtual addresses are 32-bits but physical addresses are larger 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 24 (ie, 32-bit PAE). */ 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 25 #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) 70f1528747651b Kirill A. Shutemov 2015-11-30 26 #define PHYSICAL_PMD_PAGE_MASK (((signed long)PMD_PAGE_MASK) & __PHYSICAL_MASK) 70f1528747651b Kirill A. Shutemov 2015-11-30 27 #define PHYSICAL_PUD_PAGE_MASK (((signed long)PUD_PAGE_MASK) & __PHYSICAL_MASK) 832102671855f7 Toshi Kani 2015-09-17 28 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 29 #define HPAGE_SHIFT PMD_SHIFT 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 30 #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 31 #define HPAGE_MASK (~(HPAGE_SIZE - 1)) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 32 #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 33 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 34 #define HUGE_MAX_HSTATE 2 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 35 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 @36 #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) 51c78eb3f0eb03 Jeremy Fitzhardinge 2009-02-08 37 :::::: The code at line 11 was first introduced by commit :::::: 51c78eb3f0eb033f9fb4f2316851df1d9b07b953 x86: create _types.h counterparts for page*.h :::::: TO: Jeremy Fitzhardinge <jeremy(a)goop.org&gt; :::::: CC: Jeremy Fitzhardinge <jeremy.fitzhardinge(a)citrix.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org