Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Catalin Marinas |
106 |
30.20% |
4 |
20.00% |
| Zhenyu Ye |
98 |
27.92% |
1 |
5.00% |
| Will Deacon |
57 |
16.24% |
6 |
30.00% |
| Jungseok Lee |
31 |
8.83% |
1 |
5.00% |
| Steve Capper |
27 |
7.69% |
1 |
5.00% |
| Yu Zhao |
16 |
4.56% |
1 |
5.00% |
| Linus Torvalds |
5 |
1.42% |
1 |
5.00% |
| Kirill A. Shutemov |
4 |
1.14% |
2 |
10.00% |
| Peter Zijlstra |
4 |
1.14% |
1 |
5.00% |
| Thomas Gleixner |
2 |
0.57% |
1 |
5.00% |
| Mark Rutland |
1 |
0.28% |
1 |
5.00% |
| Total |
351 |
|
20 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Based on arch/arm/include/asm/tlb.h
*
* Copyright (C) 2002 Russell King
* Copyright (C) 2012 ARM Ltd.
*/
#ifndef __ASM_TLB_H
#define __ASM_TLB_H
#include <linux/pagemap.h>
#include <linux/swap.h>
static inline void __tlb_remove_table(void *_table)
{
free_page_and_swap_cache((struct page *)_table);
}
#define tlb_flush tlb_flush
static void tlb_flush(struct mmu_gather *tlb);
#include <asm-generic/tlb.h>
/*
* get the tlbi levels in arm64. Default value is 0 if more than one
* of cleared_* is set or neither is set.
* Arm64 doesn't support p4ds now.
*/
static inline int tlb_get_level(struct mmu_gather *tlb)
{
if (tlb->cleared_ptes && !(tlb->cleared_pmds ||
tlb->cleared_puds ||
tlb->cleared_p4ds))
return 3;
if (tlb->cleared_pmds && !(tlb->cleared_ptes ||
tlb->cleared_puds ||
tlb->cleared_p4ds))
return 2;
if (tlb->cleared_puds && !(tlb->cleared_ptes ||
tlb->cleared_pmds ||
tlb->cleared_p4ds))
return 1;
return 0;
}
static inline void tlb_flush(struct mmu_gather *tlb)
{
struct vm_area_struct vma = TLB_FLUSH_VMA(tlb->mm, 0);
bool last_level = !tlb->freed_tables;
unsigned long stride = tlb_get_unmap_size(tlb);
int tlb_level = tlb_get_level(tlb);
/*
* If we're tearing down the address space then we only care about
* invalidating the walk-cache, since the ASID allocator won't
* reallocate our ASID without invalidating the entire TLB.
*/
if (tlb->fullmm) {
if (!last_level)
flush_tlb_mm(tlb->mm);
return;
}
__flush_tlb_range(&vma, tlb->start, tlb->end, stride,
last_level, tlb_level);
}
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
unsigned long addr)
{
pgtable_pte_page_dtor(pte);
tlb_remove_table(tlb, pte);
}
#if CONFIG_PGTABLE_LEVELS > 2
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
unsigned long addr)
{
struct page *page = virt_to_page(pmdp);
pgtable_pmd_page_dtor(page);
tlb_remove_table(tlb, page);
}
#endif
#if CONFIG_PGTABLE_LEVELS > 3
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
unsigned long addr)
{
tlb_remove_table(tlb, virt_to_page(pudp));
}
#endif
#endif