Hi Ian, [auto build test ERROR on linus/master] [also build test ERROR on v4.12-rc2 next-20170524] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Ian-Abbott/bug-fix-problem-including-linux-bug-h-from-linux-kernel-h/20170525-081427 config: powerpc-allmodconfig (attached as .config) compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc All error/warnings (new ones prefixed by >>): In file included from arch/powerpc/include/asm/bug.h:127:0, from include/linux/bug.h:4, from arch/powerpc/include/asm/mmu.h:125, from arch/powerpc/include/asm/lppaca.h:36, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: include/asm-generic/bug.h:101:13: warning: 'struct pt_regs' declared inside parameter list will not be visible outside of this definition or declaration struct pt_regs *regs, struct warn_args *args); ^~~~~~~ In file included from arch/powerpc/include/asm/lppaca.h:36:0, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: arch/powerpc/include/asm/mmu.h: In function 'mmu_has_feature': >> arch/powerpc/include/asm/mmu.h:174:3: error: implicit declaration of function 'printk' [-Werror=implicit-function-declaration] printk("Warning! mmu_has_feature() used prior to jump label init!\n"); ^~~~~~ >> arch/powerpc/include/asm/mmu.h:175:3: error: implicit declaration of function 'dump_stack' [-Werror=implicit-function-declaration] dump_stack(); ^~~~~~~~~~ In file included from include/linux/kernel.h:13:0, from arch/powerpc/include/asm/page.h:15, from arch/powerpc/include/asm/book3s/64/mmu-hash.h:16, from arch/powerpc/include/asm/book3s/64/mmu.h:29, from arch/powerpc/include/asm/mmu.h:304, from arch/powerpc/include/asm/lppaca.h:36, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: include/linux/printk.h: At top level: include/linux/printk.h:172:5: error: conflicting types for 'printk' int printk(const char *fmt, ...); ^~~~~~ include/linux/printk.h:172:1: note: a parameter list with an ellipsis can't match an empty parameter name list declaration int printk(const char *fmt, ...); ^~~ In file included from arch/powerpc/include/asm/lppaca.h:36:0, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: arch/powerpc/include/asm/mmu.h:174:3: note: previous implicit declaration of 'printk' was here printk("Warning! mmu_has_feature() used prior to jump label init!\n"); ^~~~~~ In file included from include/linux/kernel.h:13:0, from arch/powerpc/include/asm/page.h:15, from arch/powerpc/include/asm/book3s/64/mmu-hash.h:16, from arch/powerpc/include/asm/book3s/64/mmu.h:29, from arch/powerpc/include/asm/mmu.h:304, from arch/powerpc/include/asm/lppaca.h:36, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: >> include/linux/printk.h:282:24: warning: conflicting types for 'dump_stack' extern asmlinkage void dump_stack(void) __cold; ^~~~~~~~~~ In file included from arch/powerpc/include/asm/lppaca.h:36:0, from arch/powerpc/include/asm/paca.h:21, from arch/powerpc/include/asm/current.h:16, from include/linux/sched.h:11, from include/linux/utsname.h:5, from drivers/char/random.c:238: arch/powerpc/include/asm/mmu.h:175:3: note: previous implicit declaration of 'dump_stack' was here dump_stack(); ^~~~~~~~~~ cc1: some warnings being treated as errors vim +/printk +174 arch/powerpc/include/asm/mmu.h b5fa0f7f8 Michael Ellerman 2017-01-24 168 #ifndef __clang__ /* clang can't cope with this */ c12e6f24d Kevin Hao 2016-07-23 169 BUILD_BUG_ON(!__builtin_constant_p(feature)); b5fa0f7f8 Michael Ellerman 2017-01-24 170 #endif c12e6f24d Kevin Hao 2016-07-23 171 c812c7d8f Aneesh Kumar K.V 2016-07-23 172 #ifdef CONFIG_JUMP_LABEL_FEATURE_CHECK_DEBUG c812c7d8f Aneesh Kumar K.V 2016-07-23 173 if (!static_key_initialized) { c812c7d8f Aneesh Kumar K.V 2016-07-23 @174 printk("Warning! mmu_has_feature() used prior to jump label init!\n"); c812c7d8f Aneesh Kumar K.V 2016-07-23 @175 dump_stack(); c812c7d8f Aneesh Kumar K.V 2016-07-23 176 return early_mmu_has_feature(feature); c812c7d8f Aneesh Kumar K.V 2016-07-23 177 } c812c7d8f Aneesh Kumar K.V 2016-07-23 178 #endif :::::: The code at line 174 was first introduced by commit :::::: c812c7d8f1470ac9c8aa6d7e29b56e5845ee05fc powerpc/mm: Catch usage of cpu/mmu_has_feature() before jump label init :::::: TO: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> :::::: CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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