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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/arch/sh/include/asm/tlb.h
..
..
@@ -2,154 +2,15 @@
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 #ifndef __ASM_SH_TLB_H
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 #define __ASM_SH_TLB_H
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-#ifdef CONFIG_SUPERH64
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-# include <asm/tlb_64.h>
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-#endif
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-
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 #ifndef __ASSEMBLY__
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 #include <linux/pagemap.h>
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 #ifdef CONFIG_MMU
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 #include <linux/swap.h>
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-#include <asm/pgalloc.h>
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-#include <asm/tlbflush.h>
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-#include <asm/mmu_context.h>
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-/*
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- * TLB handling.  This allows us to remove pages from the page
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- * tables, and efficiently handle the TLB issues.
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- */
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-struct mmu_gather {
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-	struct mm_struct	*mm;
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-	unsigned int		fullmm;
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-	unsigned long		start, end;
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-};
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+#include <asm-generic/tlb.h>
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-static inline void init_tlb_gather(struct mmu_gather *tlb)
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-{
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-	tlb->start = TASK_SIZE;
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-	tlb->end = 0;
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-
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-	if (tlb->fullmm) {
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-		tlb->start = 0;
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-		tlb->end = TASK_SIZE;
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-	}
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-}
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-
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-static inline void
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-arch_tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm,
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-		unsigned long start, unsigned long end)
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-{
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-	tlb->mm = mm;
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-	tlb->start = start;
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-	tlb->end = end;
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-	tlb->fullmm = !(start | (end+1));
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-
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-	init_tlb_gather(tlb);
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-}
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-
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-static inline void
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-arch_tlb_finish_mmu(struct mmu_gather *tlb,
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-		unsigned long start, unsigned long end, bool force)
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-{
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-	if (tlb->fullmm || force)
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-		flush_tlb_mm(tlb->mm);
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-
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-	/* keep the page table cache within bounds */
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-	check_pgt_cache();
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-}
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-
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-static inline void
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-tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long address)
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-{
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-	if (tlb->start > address)
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-		tlb->start = address;
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-	if (tlb->end < address + PAGE_SIZE)
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-		tlb->end = address + PAGE_SIZE;
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-}
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-
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-#define tlb_remove_huge_tlb_entry(h, tlb, ptep, address)	\
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-	tlb_remove_tlb_entry(tlb, ptep, address)
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-
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-/*
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- * In the case of tlb vma handling, we can optimise these away in the
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- * case where we're doing a full MM flush.  When we're doing a munmap,
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- * the vmas are adjusted to only cover the region to be torn down.
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- */
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-static inline void
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-tlb_start_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
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-{
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-	if (!tlb->fullmm)
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-		flush_cache_range(vma, vma->vm_start, vma->vm_end);
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-}
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-
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-static inline void
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-tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
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-{
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-	if (!tlb->fullmm && tlb->end) {
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-		flush_tlb_range(vma, tlb->start, tlb->end);
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-		init_tlb_gather(tlb);
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-	}
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-}
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-
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-static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
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-{
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-}
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-
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-static inline void tlb_flush_mmu_free(struct mmu_gather *tlb)
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-{
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-}
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-
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-static inline void tlb_flush_mmu(struct mmu_gather *tlb)
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-{
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-}
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-
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-static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
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-{
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-	free_page_and_swap_cache(page);
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-	return false; /* avoid calling tlb_flush_mmu */
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-}
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-
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-static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
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-{
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-	__tlb_remove_page(tlb, page);
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-}
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-
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-static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
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-					  struct page *page, int page_size)
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-{
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-	return __tlb_remove_page(tlb, page);
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-}
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-
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-static inline void tlb_remove_page_size(struct mmu_gather *tlb,
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-					struct page *page, int page_size)
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-{
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-	return tlb_remove_page(tlb, page);
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-}
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-
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-static inline void
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-tlb_flush_pmd_range(struct mmu_gather *tlb, unsigned long address,
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-		    unsigned long size)
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-{
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-	if (tlb->start > address)
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-		tlb->start = address;
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-	if (tlb->end < address + size)
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-		tlb->end = address + size;
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-}
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-
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-#define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
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-static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
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-						     unsigned int page_size)
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-{
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-}
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-
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-#define pte_free_tlb(tlb, ptep, addr)	pte_free((tlb)->mm, ptep)
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-#define pmd_free_tlb(tlb, pmdp, addr)	pmd_free((tlb)->mm, pmdp)
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-#define pud_free_tlb(tlb, pudp, addr)	pud_free((tlb)->mm, pudp)
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-
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-#define tlb_migrate_finish(mm)		do { } while (0)
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-
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-#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SUPERH64)
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+#if defined(CONFIG_CPU_SH4)
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 extern void tlb_wire_entry(struct vm_area_struct *, unsigned long, pte_t);
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 extern void tlb_unwire_entry(void);
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 #else
..
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@@ -166,11 +27,6 @@
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 #endif
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 #else /* CONFIG_MMU */
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-
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-#define tlb_start_vma(tlb, vma)				do { } while (0)
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-#define tlb_end_vma(tlb, vma)				do { } while (0)
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-#define __tlb_remove_tlb_entry(tlb, pte, address)	do { } while (0)
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-#define tlb_flush(tlb)					do { } while (0)
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 #include <asm-generic/tlb.h>
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