0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#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)
|
|
{
|
|
pte_t *pte;
|
|
|
|
VM_WARN(!arch_irqs_disabled(), "%s called with irq enabled\n", __func__);
|
|
pte = __find_linux_pte(pgdir, ea, is_thp, hshift);
|
|
|
|
#if defined(CONFIG_DEBUG_VM) && \
|
|
!(defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE))
|
|
/*
|
|
* We should not find huge page if these configs are not enabled.
|
|
*/
|
|
if (hshift)
|
|
WARN_ON(*hshift);
|
|
#endif
|
|
return pte;
|
|
}
|
|
|
|
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)
|
|
{
|
|
pte_t *pte;
|
|
|
|
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__);
|
|
pte = __find_linux_pte(pgdir, ea, is_thp, hshift);
|
|
|
|
#if defined(CONFIG_DEBUG_VM) && \
|
|
!(defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE))
|
|
/*
|
|
* We should not find huge page if these configs are not enabled.
|
|
*/
|
|
if (hshift)
|
|
WARN_ON(*hshift);
|
|
#endif
|
|
return pte;
|
|
}
|
|
|
|
#endif /* _ASM_POWERPC_PTE_WALK_H */
|