Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _LINUX_PGALLLC_TRACK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _LINUX_PGALLLC_TRACK_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #if defined(CONFIG_MMU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) static inline p4d_t *p4d_alloc_track(struct mm_struct *mm, pgd_t *pgd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 				     unsigned long address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 				     pgtbl_mod_mask *mod_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	if (unlikely(pgd_none(*pgd))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 		if (__p4d_alloc(mm, pgd, address))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		*mod_mask |= PGTBL_PGD_MODIFIED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	return p4d_offset(pgd, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static inline pud_t *pud_alloc_track(struct mm_struct *mm, p4d_t *p4d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 				     unsigned long address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 				     pgtbl_mod_mask *mod_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (unlikely(p4d_none(*p4d))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		if (__pud_alloc(mm, p4d, address))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		*mod_mask |= PGTBL_P4D_MODIFIED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	return pud_offset(p4d, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static inline pmd_t *pmd_alloc_track(struct mm_struct *mm, pud_t *pud,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 				     unsigned long address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 				     pgtbl_mod_mask *mod_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (unlikely(pud_none(*pud))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		if (__pmd_alloc(mm, pud, address))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		*mod_mask |= PGTBL_PUD_MODIFIED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	return pmd_offset(pud, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #endif /* CONFIG_MMU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define pte_alloc_kernel_track(pmd, address, mask)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	((unlikely(pmd_none(*(pmd))) &&					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	  (__pte_alloc_kernel(pmd) || ({*(mask)|=PGTBL_PMD_MODIFIED;0;})))?\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		NULL: pte_offset_kernel(pmd, address))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif /* _LINUX_PGALLLC_TRACK_H */