On 8/18/23 12:16 PM, kernel test robot wrote: > Hi Muhammad, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on akpm-mm/mm-everything] > [also build test ERROR on next-20230817] > [cannot apply to linus/master v6.5-rc6] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Muhammad-Usama-Anjum/userfaultfd-UFFD_FEATURE_WP_ASYNC/20230816-193454 > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > patch link: https://lore.kernel.org/r/20230816113049.1697849-3-usama.anjum%40collabora.com > patch subject: [PATCH v32 2/6] fs/proc/task_mmu: Implement IOCTL to get and optionally clear info about PTEs > config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20230818/202308181520.yCq9Z26w-lkp@xxxxxxxxx/config) > compiler: arceb-elf-gcc (GCC) 12.3.0 > reproduce: (https://download.01.org/0day-ci/archive/20230818/202308181520.yCq9Z26w-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202308181520.yCq9Z26w-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > fs/proc/task_mmu.c: In function 'pagemap_scan_thp_entry': >>> fs/proc/task_mmu.c:2077:28: error: 'HPAGE_SIZE' undeclared (first use in this function); did you mean 'PAGE_SIZE'? > 2077 | if (end != start + HPAGE_SIZE) { > | ^~~~~~~~~~ > | PAGE_SIZE I've been emailing arc maintainers for resolution of this error from April, but nobody replies there: https://lore.kernel.org/all/0e6b318a-bbf8-3701-00af-1802c6347897@xxxxxxxxxxxxx > fs/proc/task_mmu.c:2077:28: note: each undeclared identifier is reported only once for each function it appears in > > > vim +2077 fs/proc/task_mmu.c > > 2044 > 2045 static int pagemap_scan_thp_entry(pmd_t *pmd, unsigned long start, > 2046 unsigned long end, struct mm_walk *walk) > 2047 { > 2048 #ifdef CONFIG_TRANSPARENT_HUGEPAGE > 2049 struct pagemap_scan_private *p = walk->private; > 2050 struct vm_area_struct *vma = walk->vma; > 2051 unsigned long categories; > 2052 spinlock_t *ptl; > 2053 int ret = 0; > 2054 > 2055 ptl = pmd_trans_huge_lock(pmd, vma); > 2056 if (!ptl) > 2057 return -ENOENT; > 2058 > 2059 categories = p->cur_vma_category | pagemap_thp_category(*pmd); > 2060 > 2061 if (!pagemap_scan_is_interesting_page(categories, p)) > 2062 goto out_unlock; > 2063 > 2064 ret = pagemap_scan_output(categories, p, start, &end); > 2065 if (start == end) > 2066 goto out_unlock; > 2067 > 2068 if (~p->arg.flags & PM_SCAN_WP_MATCHING) > 2069 goto out_unlock; > 2070 if (~categories & PAGE_IS_WRITTEN) > 2071 goto out_unlock; > 2072 > 2073 /* > 2074 * Break huge page into small pages if the WP operation > 2075 * needs to be performed on a portion of the huge page. > 2076 */ >> 2077 if (end != start + HPAGE_SIZE) { > 2078 spin_unlock(ptl); > 2079 split_huge_pmd(vma, pmd, start); > 2080 pagemap_scan_backout_range(p, start, end); > 2081 /* Report as if there was no THP */ > 2082 return -ENOENT; > 2083 } > 2084 > 2085 make_uffd_wp_pmd(vma, start, pmd); > 2086 flush_tlb_range(vma, start, end); > 2087 out_unlock: > 2088 spin_unlock(ptl); > 2089 return ret; > 2090 #else /* !CONFIG_TRANSPARENT_HUGEPAGE */ > 2091 return -ENOENT; > 2092 #endif > 2093 } > 2094 > -- BR, Muhammad Usama Anjum
