| #ifndef _ASM_POWERPC_PTE_WALK_H |
| #define _ASM_POWERPC_PTE_WALK_H |
| |
| #include <linux/sched.h> |
| |
| /* Don't use this directly */ |
| extern pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea, |
| bool *is_thp, unsigned *hshift); |
| |
| static inline pte_t *find_linux_pte(pgd_t *pgdir, unsigned long ea, |
| bool *is_thp, unsigned *hshift) |
| { |
| VM_WARN(!arch_irqs_disabled(), "%s called with irq enabled\n", __func__); |
| return __find_linux_pte(pgdir, ea, is_thp, hshift); |
| } |
| |
| static inline pte_t *find_init_mm_pte(unsigned long ea, unsigned *hshift) |
| { |
| pgd_t *pgdir = init_mm.pgd; |
| return __find_linux_pte(pgdir, ea, NULL, hshift); |
| } |
| /* |
| * This is what we should always use. Any other lockless page table lookup needs |
| * careful audit against THP split. |
| */ |
| static inline pte_t *find_current_mm_pte(pgd_t *pgdir, unsigned long ea, |
| bool *is_thp, unsigned *hshift) |
| { |
| VM_WARN(!arch_irqs_disabled(), "%s called with irq enabled\n", __func__); |
| VM_WARN(pgdir != current->mm->pgd, |
| "%s lock less page table lookup called on wrong mm\n", __func__); |
| return __find_linux_pte(pgdir, ea, is_thp, hshift); |
| } |
| |
| #endif /* _ASM_POWERPC_PTE_WALK_H */ |
