Contributors: 23
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Gerald Schaefer |
303 |
49.27% |
6 |
15.79% |
| Martin Schwidefsky |
141 |
22.93% |
4 |
10.53% |
| Peter Xu |
26 |
4.23% |
2 |
5.26% |
| Linus Torvalds (pre-git) |
22 |
3.58% |
3 |
7.89% |
| Andrew Morton |
19 |
3.09% |
2 |
5.26% |
| Heiko Carstens |
17 |
2.76% |
3 |
7.89% |
| Janosch Frank |
16 |
2.60% |
1 |
2.63% |
| Ryan Roberts |
11 |
1.79% |
1 |
2.63% |
| Linus Torvalds |
10 |
1.63% |
2 |
5.26% |
| Aneesh Kumar K.V |
9 |
1.46% |
1 |
2.63% |
| Christoph Lameter |
6 |
0.98% |
1 |
2.63% |
| Matthew Wilcox |
6 |
0.98% |
1 |
2.63% |
| Andi Kleen |
5 |
0.81% |
1 |
2.63% |
| David S. Miller |
4 |
0.65% |
1 |
2.63% |
| Dominik Dingel |
4 |
0.65% |
1 |
2.63% |
| Punit Agrawal |
4 |
0.65% |
1 |
2.63% |
| Baolin Wang |
3 |
0.49% |
1 |
2.63% |
| Mike Rapoport |
2 |
0.33% |
1 |
2.63% |
| Will Deacon |
2 |
0.33% |
1 |
2.63% |
| Anshuman Khandual |
2 |
0.33% |
1 |
2.63% |
| Rick Edgecombe |
1 |
0.16% |
1 |
2.63% |
| Alexandre Ghiti |
1 |
0.16% |
1 |
2.63% |
| Greg Kroah-Hartman |
1 |
0.16% |
1 |
2.63% |
| Total |
615 |
|
38 |
|
/* 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, unsigned long sz);
void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, 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_hugetlb_flags(struct folio *folio)
{
clear_bit(PG_arch_1, &folio->flags);
}
#define arch_clear_hugetlb_flags arch_clear_hugetlb_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(vma->vm_mm, addr, 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_novma(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 */