Hi Chen, [auto build test ERROR on v4.4-rc5] [also build test ERROR on next-20151215]
url: https://github.com/0day-ci/linux/commits/Chen-Gang/include-asm-generic-Notice-about-80-columns-in-pgtable-no-h/20151215-221607 config: mips-xway_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=mips All error/warnings (new ones prefixed by >>): In file included from include/linux/mm.h:55:0, from include/linux/pid_namespace.h:6, from include/linux/ptrace.h:8, from arch/mips/mm/fault.c:16: arch/mips/mm/fault.c: In function '__do_page_fault': >> arch/mips/include/asm/pgtable.h:241:33: error: expected expression before >> 'do' #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) ^ >> include/asm-generic/pgtable-nopmd.h:41:36: note: in expansion of macro >> 'set_pmd' #define set_pud(pudptr, pudval) (set_pmd((pmd_t *)(pudptr), \ ^ >> include/asm-generic/pgtable-nopud.h:36:36: note: in expansion of macro >> 'set_pud' #define set_pgd(pgdptr, pgdval) (set_pud((pud_t *)(pgdptr), \ ^ >> arch/mips/mm/fault.c:314:3: note: in expansion of macro 'set_pgd' set_pgd(pgd, *pgd_k); ^ vim +/set_pmd +41 include/asm-generic/pgtable-nopmd.h 25 * The "pud_xxx()" functions here are trivial for a folded two-level 26 * setup: the pmd is never bad, and a pmd always exists (as it's folded 27 * into the pud entry) 28 */ 29 static inline int pud_none(pud_t pud) { return 0; } 30 static inline int pud_bad(pud_t pud) { return 0; } 31 static inline int pud_present(pud_t pud) { return 1; } 32 static inline void pud_clear(pud_t *pud) { } 33 #define pmd_ERROR(pmd) (pud_ERROR((pmd).pud)) 34 35 #define pud_populate(mm, pmd, pte) do { } while (0) 36 37 /* 38 * (pmds are folded into puds so this doesn't get actually called, 39 * but the define is needed for a generic inline function.) 40 */ > 41 #define set_pud(pudptr, pudval) (set_pmd((pmd_t *)(pudptr), \ 42 (pmd_t) { pudval })) 43 44 static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address) 45 { 46 return (pmd_t *)pud; 47 } 48 49 #define pmd_val(x) (pud_val((x).pud)) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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