Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Aneesh Kumar K.V |
143 |
59.58% |
7 |
43.75% |
| Nicholas Piggin |
63 |
26.25% |
1 |
6.25% |
| Benjamin Herrenschmidt |
13 |
5.42% |
2 |
12.50% |
| Anton Blanchard |
6 |
2.50% |
2 |
12.50% |
| Andrew Morton |
6 |
2.50% |
1 |
6.25% |
| David Gibson |
4 |
1.67% |
1 |
6.25% |
| Paul Mackerras |
3 |
1.25% |
1 |
6.25% |
| Jon Tollefson |
2 |
0.83% |
1 |
6.25% |
| Total |
240 |
|
16 |
|
#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);
}
/*
* Convert a kernel vmap virtual address (vmalloc or ioremap space) to a
* physical address, without taking locks. This can be used in real-mode.
*/
static inline phys_addr_t ppc_find_vmap_phys(unsigned long addr)
{
pte_t *ptep;
phys_addr_t pa;
int hugepage_shift;
/*
* init_mm does not free page tables, and does not do THP. It may
* have huge pages from huge vmalloc / ioremap etc.
*/
ptep = find_init_mm_pte(addr, &hugepage_shift);
if (WARN_ON(!ptep))
return 0;
pa = PFN_PHYS(pte_pfn(*ptep));
if (!hugepage_shift)
hugepage_shift = PAGE_SHIFT;
pa |= addr & ((1ul << hugepage_shift) - 1);
return pa;
}
#endif /* _ASM_POWERPC_PTE_WALK_H */