Contributors: 51
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andrea Arcangeli |
291 |
16.25% |
10 |
7.14% |
| Matthew Wilcox |
277 |
15.47% |
11 |
7.86% |
| Kirill A. Shutemov |
226 |
12.62% |
19 |
13.57% |
| Yang Shi |
148 |
8.26% |
7 |
5.00% |
| Naoya Horiguchi |
133 |
7.43% |
4 |
2.86% |
| Mel Gorman |
65 |
3.63% |
6 |
4.29% |
| Dan J Williams |
60 |
3.35% |
7 |
5.00% |
| Linus Torvalds (pre-git) |
55 |
3.07% |
8 |
5.71% |
| Hugh Dickins |
47 |
2.62% |
6 |
4.29% |
| Zi Yan |
37 |
2.07% |
1 |
0.71% |
| Andi Kleen |
30 |
1.68% |
2 |
1.43% |
| Miaohe Lin |
29 |
1.62% |
4 |
2.86% |
| Zach O'Keefe |
28 |
1.56% |
2 |
1.43% |
| Yalin Wang |
28 |
1.56% |
1 |
0.71% |
| Huang Ying |
27 |
1.51% |
2 |
1.43% |
| Andrew Morton |
25 |
1.40% |
6 |
4.29% |
| Keith Busch |
24 |
1.34% |
1 |
0.71% |
| Toshi Kani |
23 |
1.28% |
1 |
0.71% |
| Shaohua Li |
21 |
1.17% |
2 |
1.43% |
| Peter Zijlstra |
18 |
1.01% |
1 |
0.71% |
| David Rientjes |
16 |
0.89% |
3 |
2.14% |
| Aaron Lu |
16 |
0.89% |
1 |
0.71% |
| Alan Cox |
15 |
0.84% |
1 |
0.71% |
| Johannes Weiner |
15 |
0.84% |
2 |
1.43% |
| Jan Kara |
14 |
0.78% |
1 |
0.71% |
| Christoph Lameter |
12 |
0.67% |
1 |
0.71% |
| Andy Whitcroft |
11 |
0.61% |
2 |
1.43% |
| Linus Torvalds |
11 |
0.61% |
2 |
1.43% |
| Barry Song |
9 |
0.50% |
1 |
0.71% |
| MinChan Kim |
7 |
0.39% |
1 |
0.71% |
| Jeremy Fitzhardinge |
7 |
0.39% |
1 |
0.71% |
| Peter Xu |
7 |
0.39% |
3 |
2.14% |
| Will Deacon |
7 |
0.39% |
1 |
0.71% |
| Cody P Schafer |
6 |
0.34% |
1 |
0.71% |
| Prasanna Meda |
6 |
0.34% |
1 |
0.71% |
| Aneesh Kumar K.V |
6 |
0.34% |
2 |
1.43% |
| Stanislaw Gruszka |
6 |
0.34% |
1 |
0.71% |
| Stephen Wilson |
6 |
0.34% |
1 |
0.71% |
| Souptick Joarder |
4 |
0.22% |
1 |
0.71% |
| Michal Hocko |
3 |
0.17% |
1 |
0.71% |
| Lorenzo Stoakes |
2 |
0.11% |
1 |
0.71% |
| Mike Rapoport |
2 |
0.11% |
1 |
0.71% |
| Chen Gang S |
2 |
0.11% |
1 |
0.71% |
| Keith Mannthey |
2 |
0.11% |
1 |
0.71% |
| Kenneth W Chen |
1 |
0.06% |
1 |
0.71% |
| Nicholas Piggin |
1 |
0.06% |
1 |
0.71% |
| Michel Lespinasse |
1 |
0.06% |
1 |
0.71% |
| Ingo Molnar |
1 |
0.06% |
1 |
0.71% |
| Dave Hansen |
1 |
0.06% |
1 |
0.71% |
| Mark Rutland |
1 |
0.06% |
1 |
0.71% |
| Greg Kroah-Hartman |
1 |
0.06% |
1 |
0.71% |
| Total |
1791 |
|
140 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_HUGE_MM_H
#define _LINUX_HUGE_MM_H
#include <linux/sched/coredump.h>
#include <linux/mm_types.h>
#include <linux/fs.h> /* only for vma_is_dax() */
vm_fault_t do_huge_pmd_anonymous_page(struct vm_fault *vmf);
int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm,
pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long addr,
struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma);
void huge_pmd_set_accessed(struct vm_fault *vmf);
int copy_huge_pud(struct mm_struct *dst_mm, struct mm_struct *src_mm,
pud_t *dst_pud, pud_t *src_pud, unsigned long addr,
struct vm_area_struct *vma);
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
void huge_pud_set_accessed(struct vm_fault *vmf, pud_t orig_pud);
#else
static inline void huge_pud_set_accessed(struct vm_fault *vmf, pud_t orig_pud)
{
}
#endif
vm_fault_t do_huge_pmd_wp_page(struct vm_fault *vmf);
bool madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
pmd_t *pmd, unsigned long addr, unsigned long next);
int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr);
int zap_huge_pud(struct mmu_gather *tlb, struct vm_area_struct *vma, pud_t *pud,
unsigned long addr);
bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr,
unsigned long new_addr, pmd_t *old_pmd, pmd_t *new_pmd);
int change_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
pmd_t *pmd, unsigned long addr, pgprot_t newprot,
unsigned long cp_flags);
vm_fault_t vmf_insert_pfn_pmd(struct vm_fault *vmf, pfn_t pfn, bool write);
vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, pfn_t pfn, bool write);
enum transparent_hugepage_flag {
TRANSPARENT_HUGEPAGE_UNSUPPORTED,
TRANSPARENT_HUGEPAGE_FLAG,
TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG,
TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG,
TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_FLAG,
TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG,
TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG,
TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG,
TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG,
};
struct kobject;
struct kobj_attribute;
ssize_t single_hugepage_flag_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count,
enum transparent_hugepage_flag flag);
ssize_t single_hugepage_flag_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf,
enum transparent_hugepage_flag flag);
extern struct kobj_attribute shmem_enabled_attr;
#define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT)
#define HPAGE_PMD_NR (1<<HPAGE_PMD_ORDER)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define HPAGE_PMD_SHIFT PMD_SHIFT
#define HPAGE_PMD_SIZE ((1UL) << HPAGE_PMD_SHIFT)
#define HPAGE_PMD_MASK (~(HPAGE_PMD_SIZE - 1))
#define HPAGE_PUD_SHIFT PUD_SHIFT
#define HPAGE_PUD_SIZE ((1UL) << HPAGE_PUD_SHIFT)
#define HPAGE_PUD_MASK (~(HPAGE_PUD_SIZE - 1))
extern unsigned long transparent_hugepage_flags;
#define hugepage_flags_enabled() \
(transparent_hugepage_flags & \
((1<<TRANSPARENT_HUGEPAGE_FLAG) | \
(1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)))
#define hugepage_flags_always() \
(transparent_hugepage_flags & \
(1<<TRANSPARENT_HUGEPAGE_FLAG))
/*
* Do the below checks:
* - For file vma, check if the linear page offset of vma is
* HPAGE_PMD_NR aligned within the file. The hugepage is
* guaranteed to be hugepage-aligned within the file, but we must
* check that the PMD-aligned addresses in the VMA map to
* PMD-aligned offsets within the file, else the hugepage will
* not be PMD-mappable.
* - For all vmas, check if the haddr is in an aligned HPAGE_PMD_SIZE
* area.
*/
static inline bool transhuge_vma_suitable(struct vm_area_struct *vma,
unsigned long addr)
{
unsigned long haddr;
/* Don't have to check pgoff for anonymous vma */
if (!vma_is_anonymous(vma)) {
if (!IS_ALIGNED((vma->vm_start >> PAGE_SHIFT) - vma->vm_pgoff,
HPAGE_PMD_NR))
return false;
}
haddr = addr & HPAGE_PMD_MASK;
if (haddr < vma->vm_start || haddr + HPAGE_PMD_SIZE > vma->vm_end)
return false;
return true;
}
static inline bool file_thp_enabled(struct vm_area_struct *vma)
{
struct inode *inode;
if (!vma->vm_file)
return false;
inode = vma->vm_file->f_inode;
return (IS_ENABLED(CONFIG_READ_ONLY_THP_FOR_FS)) &&
(vma->vm_flags & VM_EXEC) &&
!inode_is_open_for_write(inode) && S_ISREG(inode->i_mode);
}
bool hugepage_vma_check(struct vm_area_struct *vma, unsigned long vm_flags,
bool smaps, bool in_pf, bool enforce_sysfs);
#define transparent_hugepage_use_zero_page() \
(transparent_hugepage_flags & \
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG))
unsigned long thp_get_unmapped_area(struct file *filp, unsigned long addr,
unsigned long len, unsigned long pgoff, unsigned long flags);
void folio_prep_large_rmappable(struct folio *folio);
bool can_split_folio(struct folio *folio, int *pextra_pins);
int split_huge_page_to_list(struct page *page, struct list_head *list);
static inline int split_huge_page(struct page *page)
{
return split_huge_page_to_list(page, NULL);
}
void deferred_split_folio(struct folio *folio);
void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long address, bool freeze, struct folio *folio);
#define split_huge_pmd(__vma, __pmd, __address) \
do { \
pmd_t *____pmd = (__pmd); \
if (is_swap_pmd(*____pmd) || pmd_trans_huge(*____pmd) \
|| pmd_devmap(*____pmd)) \
__split_huge_pmd(__vma, __pmd, __address, \
false, NULL); \
} while (0)
void split_huge_pmd_address(struct vm_area_struct *vma, unsigned long address,
bool freeze, struct folio *folio);
void __split_huge_pud(struct vm_area_struct *vma, pud_t *pud,
unsigned long address);
#define split_huge_pud(__vma, __pud, __address) \
do { \
pud_t *____pud = (__pud); \
if (pud_trans_huge(*____pud) \
|| pud_devmap(*____pud)) \
__split_huge_pud(__vma, __pud, __address); \
} while (0)
int hugepage_madvise(struct vm_area_struct *vma, unsigned long *vm_flags,
int advice);
int madvise_collapse(struct vm_area_struct *vma,
struct vm_area_struct **prev,
unsigned long start, unsigned long end);
void vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long start,
unsigned long end, long adjust_next);
spinlock_t *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma);
spinlock_t *__pud_trans_huge_lock(pud_t *pud, struct vm_area_struct *vma);
static inline int is_swap_pmd(pmd_t pmd)
{
return !pmd_none(pmd) && !pmd_present(pmd);
}
/* mmap_lock must be held on entry */
static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
struct vm_area_struct *vma)
{
if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd))
return __pmd_trans_huge_lock(pmd, vma);
else
return NULL;
}
static inline spinlock_t *pud_trans_huge_lock(pud_t *pud,
struct vm_area_struct *vma)
{
if (pud_trans_huge(*pud) || pud_devmap(*pud))
return __pud_trans_huge_lock(pud, vma);
else
return NULL;
}
/**
* folio_test_pmd_mappable - Can we map this folio with a PMD?
* @folio: The folio to test
*/
static inline bool folio_test_pmd_mappable(struct folio *folio)
{
return folio_order(folio) >= HPAGE_PMD_ORDER;
}
struct page *follow_devmap_pmd(struct vm_area_struct *vma, unsigned long addr,
pmd_t *pmd, int flags, struct dev_pagemap **pgmap);
struct page *follow_devmap_pud(struct vm_area_struct *vma, unsigned long addr,
pud_t *pud, int flags, struct dev_pagemap **pgmap);
vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf);
extern struct page *huge_zero_page;
extern unsigned long huge_zero_pfn;
static inline bool is_huge_zero_page(struct page *page)
{
return READ_ONCE(huge_zero_page) == page;
}
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
return pmd_present(pmd) && READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd);
}
static inline bool is_huge_zero_pud(pud_t pud)
{
return false;
}
struct page *mm_get_huge_zero_page(struct mm_struct *mm);
void mm_put_huge_zero_page(struct mm_struct *mm);
#define mk_huge_pmd(page, prot) pmd_mkhuge(mk_pmd(page, prot))
static inline bool thp_migration_supported(void)
{
return IS_ENABLED(CONFIG_ARCH_ENABLE_THP_MIGRATION);
}
#else /* CONFIG_TRANSPARENT_HUGEPAGE */
#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
#define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; })
#define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; })
#define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; })
#define HPAGE_PUD_MASK ({ BUILD_BUG(); 0; })
#define HPAGE_PUD_SIZE ({ BUILD_BUG(); 0; })
static inline bool folio_test_pmd_mappable(struct folio *folio)
{
return false;
}
static inline bool transhuge_vma_suitable(struct vm_area_struct *vma,
unsigned long addr)
{
return false;
}
static inline bool hugepage_vma_check(struct vm_area_struct *vma,
unsigned long vm_flags, bool smaps,
bool in_pf, bool enforce_sysfs)
{
return false;
}
static inline void folio_prep_large_rmappable(struct folio *folio) {}
#define transparent_hugepage_flags 0UL
#define thp_get_unmapped_area NULL
static inline bool
can_split_folio(struct folio *folio, int *pextra_pins)
{
return false;
}
static inline int
split_huge_page_to_list(struct page *page, struct list_head *list)
{
return 0;
}
static inline int split_huge_page(struct page *page)
{
return 0;
}
static inline void deferred_split_folio(struct folio *folio) {}
#define split_huge_pmd(__vma, __pmd, __address) \
do { } while (0)
static inline void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long address, bool freeze, struct folio *folio) {}
static inline void split_huge_pmd_address(struct vm_area_struct *vma,
unsigned long address, bool freeze, struct folio *folio) {}
#define split_huge_pud(__vma, __pmd, __address) \
do { } while (0)
static inline int hugepage_madvise(struct vm_area_struct *vma,
unsigned long *vm_flags, int advice)
{
return -EINVAL;
}
static inline int madvise_collapse(struct vm_area_struct *vma,
struct vm_area_struct **prev,
unsigned long start, unsigned long end)
{
return -EINVAL;
}
static inline void vma_adjust_trans_huge(struct vm_area_struct *vma,
unsigned long start,
unsigned long end,
long adjust_next)
{
}
static inline int is_swap_pmd(pmd_t pmd)
{
return 0;
}
static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
struct vm_area_struct *vma)
{
return NULL;
}
static inline spinlock_t *pud_trans_huge_lock(pud_t *pud,
struct vm_area_struct *vma)
{
return NULL;
}
static inline vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf)
{
return 0;
}
static inline bool is_huge_zero_page(struct page *page)
{
return false;
}
static inline bool is_huge_zero_pmd(pmd_t pmd)
{
return false;
}
static inline bool is_huge_zero_pud(pud_t pud)
{
return false;
}
static inline void mm_put_huge_zero_page(struct mm_struct *mm)
{
return;
}
static inline struct page *follow_devmap_pmd(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmd, int flags, struct dev_pagemap **pgmap)
{
return NULL;
}
static inline struct page *follow_devmap_pud(struct vm_area_struct *vma,
unsigned long addr, pud_t *pud, int flags, struct dev_pagemap **pgmap)
{
return NULL;
}
static inline bool thp_migration_supported(void)
{
return false;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
static inline int split_folio_to_list(struct folio *folio,
struct list_head *list)
{
return split_huge_page_to_list(&folio->page, list);
}
static inline int split_folio(struct folio *folio)
{
return split_folio_to_list(folio, NULL);
}
/*
* archs that select ARCH_WANTS_THP_SWAP but don't support THP_SWP due to
* limitations in the implementation like arm64 MTE can override this to
* false
*/
#ifndef arch_thp_swp_supported
static inline bool arch_thp_swp_supported(void)
{
return true;
}
#endif
#endif /* _LINUX_HUGE_MM_H */