pud_alloc_one     228 include/asm-frv/pgtable.h #define pud_alloc_one(mm, address)		NULL
pud_alloc_one      53 include/asm-generic/pgtable-nopud.h #define pud_alloc_one(mm, address)		NULL
pud_alloc_one      99 include/asm-x86/pgalloc.h static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)