/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_PGALLOC_TRACK_H#define _LINUX_PGALLOC_TRACK_H #include <linux/mm.h>#include <linux/pgtable.h> #if defined(CONFIG_MMU)static inline p4d_t *p4d_alloc_track(struct mm_struct *mm, pgd_t *pgd,				     unsigned long address,				     pgtbl_mod_mask *mod_mask){	if (unlikely(pgd_none(*pgd))) {		if (__p4d_alloc(mm, pgd, address))			return NULL;		*mod_mask |= PGTBL_PGD_MODIFIED;	} 	return p4d_offset(pgd, address);} static inline pud_t *pud_alloc_track(struct mm_struct *mm, p4d_t *p4d,				     unsigned long address,				     pgtbl_mod_mask *mod_mask){	if (unlikely(p4d_none(*p4d))) {		if (__pud_alloc(mm, p4d, address))			return NULL;		*mod_mask |= PGTBL_P4D_MODIFIED;	} 	return pud_offset(p4d, address);} static inline pmd_t *pmd_alloc_track(struct mm_struct *mm, pud_t *pud,				     unsigned long address,				     pgtbl_mod_mask *mod_mask){	if (unlikely(pud_none(*pud))) {		if (__pmd_alloc(mm, pud, address))			return NULL;		*mod_mask |= PGTBL_PUD_MODIFIED;	} 	return pmd_offset(pud, address);}#endif /* CONFIG_MMU */ #define pte_alloc_kernel_track(pmd, address, mask)			\	((unlikely(pmd_none(*(pmd))) &&					\	  (__pte_alloc_kernel(pmd) || ({*(mask)|=PGTBL_PMD_MODIFIED;0;})))?\		NULL: pte_offset_kernel(pmd, address)) #endif /* _LINUX_PGALLOC_TRACK_H */