tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: eb9ebdceaadcab583114dd84f2a630603405e50f commit: 47f9cd553915150ad3577556c253baf632e58207 [11821/11843] asm-generic/tlb: rename HAVE_RCU_TABLE_FREE config: sparc64-allnoconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 47f9cd553915150ad3577556c253baf632e58207 # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=sparc64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): mm/mmu_gather.c: In function 'tlb_remove_table_one': >> mm/mmu_gather.c:130:2: error: implicit declaration of function '__tlb_remove_table'; did you mean 'tlb_remove_table'? [-Werror=implicit-function-declaration] __tlb_remove_table(table); ^~~~~~~~~~~~~~~~~~ tlb_remove_table cc1: some warnings being treated as errors vim +130 mm/mmu_gather.c 196d9d8bb71dea Peter Zijlstra 2018-09-03 119 196d9d8bb71dea Peter Zijlstra 2018-09-03 120 static void tlb_remove_table_one(void *table) 196d9d8bb71dea Peter Zijlstra 2018-09-03 121 { 196d9d8bb71dea Peter Zijlstra 2018-09-03 122 /* 196d9d8bb71dea Peter Zijlstra 2018-09-03 123 * This isn't an RCU grace period and hence the page-tables cannot be 196d9d8bb71dea Peter Zijlstra 2018-09-03 124 * assumed to be actually RCU-freed. 196d9d8bb71dea Peter Zijlstra 2018-09-03 125 * 196d9d8bb71dea Peter Zijlstra 2018-09-03 126 * It is however sufficient for software page-table walkers that rely on 196d9d8bb71dea Peter Zijlstra 2018-09-03 127 * IRQ disabling. See the comment near struct mmu_table_batch. 196d9d8bb71dea Peter Zijlstra 2018-09-03 128 */ 196d9d8bb71dea Peter Zijlstra 2018-09-03 129 smp_call_function(tlb_remove_table_smp_sync, NULL, 1); 196d9d8bb71dea Peter Zijlstra 2018-09-03 @130 __tlb_remove_table(table); 196d9d8bb71dea Peter Zijlstra 2018-09-03 131 } 196d9d8bb71dea Peter Zijlstra 2018-09-03 132 :::::: The code at line 130 was first introduced by commit :::::: 196d9d8bb71deaa2d1c7170c88a2f1a318363047 mm/memory: Move mmu_gather and TLB invalidation code into its own file :::::: TO: Peter Zijlstra <peterz@xxxxxxxxxxxxx> :::::: CC: Will Deacon <will.deacon@xxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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