Contributors: 20
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Gerald Schaefer |
303 |
52.60% |
6 |
17.14% |
| Martin Schwidefsky |
135 |
23.44% |
4 |
11.43% |
| Peter Xu |
26 |
4.51% |
2 |
5.71% |
| Janosch Frank |
18 |
3.12% |
1 |
2.86% |
| Heiko Carstens |
15 |
2.60% |
3 |
8.57% |
| Linus Torvalds (pre-git) |
13 |
2.26% |
3 |
8.57% |
| Andrew Morton |
13 |
2.26% |
2 |
5.71% |
| Aneesh Kumar K.V |
9 |
1.56% |
1 |
2.86% |
| Linus Torvalds |
6 |
1.04% |
2 |
5.71% |
| Christoph Lameter |
6 |
1.04% |
1 |
2.86% |
| Andi Kleen |
5 |
0.87% |
1 |
2.86% |
| Anshuman Khandual |
4 |
0.69% |
1 |
2.86% |
| Dominik Dingel |
4 |
0.69% |
1 |
2.86% |
| Punit Agrawal |
4 |
0.69% |
1 |
2.86% |
| Will Deacon |
4 |
0.69% |
1 |
2.86% |
| David S. Miller |
4 |
0.69% |
1 |
2.86% |
| Baolin Wang |
3 |
0.52% |
1 |
2.86% |
| Mike Rapoport |
2 |
0.35% |
1 |
2.86% |
| Alexandre Ghiti |
1 |
0.17% |
1 |
2.86% |
| Greg Kroah-Hartman |
1 |
0.17% |
1 |
2.86% |
| Total |
576 |
|
35 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* IBM System z Huge TLB Page Support for Kernel.
*
* Copyright IBM Corp. 2008
* Author(s): Gerald Schaefer <gerald.schaefer@de.ibm.com>
*/
#ifndef _ASM_S390_HUGETLB_H
#define _ASM_S390_HUGETLB_H
#include <linux/pgtable.h>
#include <asm/page.h>
#define hugetlb_free_pgd_range free_pgd_range
#define hugepages_supported() (MACHINE_HAS_EDAT1)
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
pte_t huge_ptep_get(pte_t *ptep);
pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
unsigned long addr, pte_t *ptep);
/*
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
static inline int prepare_hugepage_range(struct file *file,
unsigned long addr, unsigned long len)
{
struct hstate *h = hstate_file(file);
if (len & ~huge_page_mask(h))
return -EINVAL;
if (addr & ~huge_page_mask(h))
return -EINVAL;
return 0;
}
static inline void arch_clear_hugepage_flags(struct page *page)
{
clear_bit(PG_arch_1, &page->flags);
}
#define arch_clear_hugepage_flags arch_clear_hugepage_flags
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, unsigned long sz)
{
if ((pte_val(*ptep) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
set_pte(ptep, __pte(_REGION3_ENTRY_EMPTY));
else
set_pte(ptep, __pte(_SEGMENT_ENTRY_EMPTY));
}
static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
unsigned long address, pte_t *ptep)
{
return huge_ptep_get_and_clear(vma->vm_mm, address, ptep);
}
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty)
{
int changed = !pte_same(huge_ptep_get(ptep), pte);
if (changed) {
huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
}
return changed;
}
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
pte_t pte = huge_ptep_get_and_clear(mm, addr, ptep);
set_huge_pte_at(mm, addr, ptep, pte_wrprotect(pte));
}
static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
{
return mk_pte(page, pgprot);
}
static inline int huge_pte_none(pte_t pte)
{
return pte_none(pte);
}
static inline int huge_pte_none_mostly(pte_t pte)
{
return huge_pte_none(pte);
}
static inline int huge_pte_write(pte_t pte)
{
return pte_write(pte);
}
static inline int huge_pte_dirty(pte_t pte)
{
return pte_dirty(pte);
}
static inline pte_t huge_pte_mkwrite(pte_t pte)
{
return pte_mkwrite(pte);
}
static inline pte_t huge_pte_mkdirty(pte_t pte)
{
return pte_mkdirty(pte);
}
static inline pte_t huge_pte_wrprotect(pte_t pte)
{
return pte_wrprotect(pte);
}
static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
{
return pte_modify(pte, newprot);
}
static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
{
return pte;
}
static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
{
return pte;
}
static inline int huge_pte_uffd_wp(pte_t pte)
{
return 0;
}
static inline bool gigantic_page_runtime_supported(void)
{
return true;
}
#endif /* _ASM_S390_HUGETLB_H */