Hi Nicholas, I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next] [also build test ERROR on linus/master v5.7-rc4 next-20200505] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/powerpc-64s-hash-add-torture_slb-kernel-boot-option-to-increase-SLB-faults/20200505-053958 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-randconfig-a001-20200503 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 9e3549804672c79d64eececab39019f4dfd2b7ea) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <l...@intel.com> All error/warnings (new ones prefixed by >>): In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:10: In file included from include/linux/time.h:6: In file included from include/linux/seqlock.h:36: In file included from include/linux/spinlock.h:51: In file included from include/linux/preempt.h:78: In file included from ./arch/powerpc/include/generated/asm/preempt.h:1: In file included from include/asm-generic/preempt.h:5: In file included from include/linux/thread_info.h:21: In file included from arch/powerpc/include/asm/current.h:13: In file included from arch/powerpc/include/asm/paca.h:17: In file included from arch/powerpc/include/asm/lppaca.h:47: In file included from arch/powerpc/include/asm/mmu.h:356: In file included from arch/powerpc/include/asm/book3s/64/mmu.h:46: >> arch/powerpc/include/asm/book3s/64/mmu-hash.h:321:1: warning: declaration >> specifier missing, defaulting to 'int' DECLARE_STATIC_KEY_FALSE(torture_slb_key); ^ int >> arch/powerpc/include/asm/book3s/64/mmu-hash.h:321:26: error: a parameter >> list without types is only allowed in a function definition DECLARE_STATIC_KEY_FALSE(torture_slb_key); ^ >> arch/powerpc/include/asm/book3s/64/mmu-hash.h:324:9: error: implicit >> declaration of function 'static_branch_unlikely' >> [-Werror,-Wimplicit-function-declaration] return static_branch_unlikely(&torture_slb_key); ^ >> arch/powerpc/include/asm/book3s/64/mmu-hash.h:324:33: error: use of >> undeclared identifier 'torture_slb_key'; did you mean 'torture_slb'? return static_branch_unlikely(&torture_slb_key); ^~~~~~~~~~~~~~~ torture_slb arch/powerpc/include/asm/book3s/64/mmu-hash.h:322:20: note: 'torture_slb' declared here static inline bool torture_slb(void) ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:87:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[3] | set->sig[2] | ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:87:25: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[3] | set->sig[2] | ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:88:4: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] set->sig[1] | set->sig[0]) == 0; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:90:11: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[1] | set->sig[0]) == 0; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:103:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set1->sig[3] == set2->sig[3]) && ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:103:27: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set1->sig[3] == set2->sig[3]) && ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:104:5: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] (set1->sig[2] == set2->sig[2]) && ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:104:21: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] (set1->sig[2] == set2->sig[2]) && ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here -- In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:232:10: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: set->sig[1] = 0; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: In file included from include/linux/compat.h:17: In file included from include/linux/fs.h:34: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:244:10: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: set->sig[1] = -1; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:424:22: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:424:10: warning: array index 7 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:424:42: warning: array index 6 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:424:53: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:426:22: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:426:10: warning: array index 5 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:426:42: warning: array index 4 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:426:53: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:428:22: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:14: include/linux/compat.h:428:10: warning: array index 3 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:428:42: warning: array index 2 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:428:53: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ arch/powerpc/include/uapi/asm/signal.h:18:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/powerpc/kernel/asm-offsets.c:21: >> include/linux/mman.h:133:9: warning: division by zero is undefined >> [-Wdivision-by-zero] _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/mman.h:111:21: note: expanded from macro '_calc_vm_trans' : ((x) & (bit1)) / ((bit1) / (bit2)))) ^ ~~~~~~~~~~~~~~~~~ include/linux/mman.h:134:9: warning: division by zero is undefined [-Wdivision-by-zero] _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/mman.h:111:21: note: expanded from macro '_calc_vm_trans' : ((x) & (bit1)) / ((bit1) / (bit2)))) ^ ~~~~~~~~~~~~~~~~~ 64 warnings and 3 errors generated. make[2]: *** [scripts/Makefile.build:100: arch/powerpc/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1141: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:180: sub-make] Error 2 vim +321 arch/powerpc/include/asm/book3s/64/mmu-hash.h 319 320 extern bool torture_slb_enabled; > 321 DECLARE_STATIC_KEY_FALSE(torture_slb_key); 322 static inline bool torture_slb(void) 323 { > 324 return static_branch_unlikely(&torture_slb_key); 325 } 326 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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