Release 4.14 arch/sh/include/asm/tlb.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_TLB_H
#define __ASM_SH_TLB_H
#ifdef CONFIG_SUPERH64
# include <asm/tlb_64.h>
#endif
#ifndef __ASSEMBLY__
#include <linux/pagemap.h>
#ifdef CONFIG_MMU
#include <linux/swap.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/mmu_context.h>
/*
* TLB handling. This allows us to remove pages from the page
* tables, and efficiently handle the TLB issues.
*/
struct mmu_gather {
struct mm_struct *mm;
unsigned int fullmm;
unsigned long start, end;
};
static inline void init_tlb_gather(struct mmu_gather *tlb)
{
tlb->start = TASK_SIZE;
tlb->end = 0;
if (tlb->fullmm) {
tlb->start = 0;
tlb->end = TASK_SIZE;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 44 | 100.00% | 1 | 100.00% |
| Total | 44 | 100.00% | 1 | 100.00% |
static inline void
arch_tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm,
unsigned long start, unsigned long end)
{
tlb->mm = mm;
tlb->start = start;
tlb->end = end;
tlb->fullmm = !(start | (end+1));
init_tlb_gather(tlb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds | 28 | 44.44% | 1 | 25.00% |
| Paul Mundt | 28 | 44.44% | 1 | 25.00% |
| Peter Zijlstra | 6 | 9.52% | 1 | 25.00% |
| MinChan Kim | 1 | 1.59% | 1 | 25.00% |
| Total | 63 | 100.00% | 4 | 100.00% |
static inline void
arch_tlb_finish_mmu(struct mmu_gather *tlb,
unsigned long start, unsigned long end, bool force)
{
if (tlb->fullmm || force)
flush_tlb_mm(tlb->mm);
/* keep the page table cache within bounds */
check_pgt_cache();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 36 | 85.71% | 1 | 33.33% |
| MinChan Kim | 6 | 14.29% | 2 | 66.67% |
| Total | 42 | 100.00% | 3 | 100.00% |
static inline void
tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long address)
{
if (tlb->start > address)
tlb->start = address;
if (tlb->end < address + PAGE_SIZE)
tlb->end = address + PAGE_SIZE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 52 | 100.00% | 1 | 100.00% |
| Total | 52 | 100.00% | 1 | 100.00% |
#define tlb_remove_huge_tlb_entry(h, tlb, ptep, address) \
tlb_remove_tlb_entry(tlb, ptep, address)
/*
* In the case of tlb vma handling, we can optimise these away in the
* case where we're doing a full MM flush. When we're doing a munmap,
* the vmas are adjusted to only cover the region to be torn down.
*/
static inline void
tlb_start_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
{
if (!tlb->fullmm)
flush_cache_range(vma, vma->vm_start, vma->vm_end);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
static inline void
tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
{
if (!tlb->fullmm && tlb->end) {
flush_tlb_range(vma, tlb->start, tlb->end);
init_tlb_gather(tlb);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 48 | 100.00% | 1 | 100.00% |
| Total | 48 | 100.00% | 1 | 100.00% |
static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void tlb_flush_mmu_free(struct mmu_gather *tlb)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void tlb_flush_mmu(struct mmu_gather *tlb)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Zijlstra | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
{
free_page_and_swap_cache(page);
return false; /* avoid calling tlb_flush_mmu */
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Zijlstra | 25 | 96.15% | 1 | 50.00% |
| Aneesh Kumar K.V | 1 | 3.85% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
{
__tlb_remove_page(tlb, page);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Peter Zijlstra | 18 | 75.00% | 1 | 50.00% |
| Paul Mundt | 6 | 25.00% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
struct page *page, int page_size)
{
return __tlb_remove_page(tlb, page);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aneesh Kumar K.V | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
static inline void tlb_remove_page_size(struct mmu_gather *tlb,
struct page *page, int page_size)
{
return tlb_remove_page(tlb, page);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aneesh Kumar K.V | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
#define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
unsigned int page_size)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aneesh Kumar K.V | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
#define pte_free_tlb(tlb, ptep, addr) pte_free((tlb)->mm, ptep)
#define pmd_free_tlb(tlb, pmdp, addr) pmd_free((tlb)->mm, pmdp)
#define pud_free_tlb(tlb, pudp, addr) pud_free((tlb)->mm, pudp)
#define tlb_migrate_finish(mm) do { } while (0)
#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SUPERH64)
extern void tlb_wire_entry(struct vm_area_struct *, unsigned long, pte_t);
extern void tlb_unwire_entry(void);
#else
static inline void tlb_wire_entry(struct vm_area_struct *vma ,
unsigned long addr, pte_t pte)
{
BUG();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Matt Fleming | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static inline void tlb_unwire_entry(void)
{
BUG();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Matt Fleming | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
#endif
#else /* CONFIG_MMU */
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
#define tlb_flush(tlb) do { } while (0)
#include <asm-generic/tlb.h>
#endif /* CONFIG_MMU */
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_TLB_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mundt | 393 | 58.05% | 4 | 20.00% |
| Aneesh Kumar K.V | 90 | 13.29% | 4 | 20.00% |
| Matt Fleming | 63 | 9.31% | 2 | 10.00% |
| Peter Zijlstra | 60 | 8.86% | 1 | 5.00% |
| Linus Torvalds | 53 | 7.83% | 3 | 15.00% |
| MinChan Kim | 7 | 1.03% | 2 | 10.00% |
| Benjamin Herrenschmidt | 6 | 0.89% | 1 | 5.00% |
| Nobuhiro Iwamatsu | 3 | 0.44% | 1 | 5.00% |
| Greg Kroah-Hartman | 1 | 0.15% | 1 | 5.00% |
| David Howells | 1 | 0.15% | 1 | 5.00% |
| Total | 677 | 100.00% | 20 | 100.00% |
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