remove unused flush_tlb_pgtables
Nobody uses flush_tlb_pgtables anymore, this patch removes all remaining traces of it from all archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Benjamin Herrenschmidt
Linus Torvalds
Родитель
22124c9999
Коммит
1c7037db50
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@ -87,30 +87,7 @@ changes occur:
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This is used primarily during fault processing.
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5) void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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The software page tables for address space 'mm' for virtual
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addresses in the range 'start' to 'end-1' are being torn down.
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Some platforms cache the lowest level of the software page tables
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in a linear virtually mapped array, to make TLB miss processing
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more efficient. On such platforms, since the TLB is caching the
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software page table structure, it needs to be flushed when parts
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of the software page table tree are unlinked/freed.
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Sparc64 is one example of a platform which does this.
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Usually, when munmap()'ing an area of user virtual address
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space, the kernel leaves the page table parts around and just
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marks the individual pte's as invalid. However, if very large
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portions of the address space are unmapped, the kernel frees up
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those portions of the software page tables to prevent potential
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excessive kernel memory usage caused by erratic mmap/mmunmap
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sequences. It is at these times that flush_tlb_pgtables will
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be invoked.
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6) void update_mmu_cache(struct vm_area_struct *vma,
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5) void update_mmu_cache(struct vm_area_struct *vma,
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unsigned long address, pte_t pte)
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At the end of every page fault, this routine is invoked to
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@ -123,7 +100,7 @@ changes occur:
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translations for software managed TLB configurations.
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The sparc64 port currently does this.
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7) void tlb_migrate_finish(struct mm_struct *mm)
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6) void tlb_migrate_finish(struct mm_struct *mm)
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This interface is called at the end of an explicit
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process migration. This interface provides a hook
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@ -92,17 +92,6 @@ flush_tlb_other(struct mm_struct *mm)
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if (*mmc) *mmc = 0;
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}
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/* Flush a specified range of user mapping page tables from TLB.
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Although Alpha uses VPTE caches, this can be a nop, as Alpha does
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not have finegrained tlb flushing, so it will flush VPTE stuff
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during next flush_tlb_range. */
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static inline void
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flush_tlb_pgtables(struct mm_struct *mm, unsigned long start,
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unsigned long end)
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{
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}
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#ifndef CONFIG_SMP
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/* Flush everything (kernel mapping may also have changed
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due to vmalloc/vfree). */
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@ -463,11 +463,6 @@ extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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*/
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extern void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte);
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/*
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* ARM processors do not cache TLB tables in RAM.
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*/
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#define flush_tlb_pgtables(mm,start,end) do { } while (0)
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#endif
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#endif /* CONFIG_MMU */
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@ -19,7 +19,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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extern void flush_tlb(void);
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extern void flush_tlb_all(void);
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@ -29,12 +28,6 @@ extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
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extern void __flush_tlb_page(unsigned long asid, unsigned long page);
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* Nothing to do */
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}
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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#endif /* __ASM_AVR32_TLBFLUSH_H */
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@ -53,10 +53,4 @@ static inline void flush_tlb_kernel_page(unsigned long addr)
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BUG();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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BUG();
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}
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#endif
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@ -38,13 +38,6 @@ static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long st
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flush_tlb_mm(vma->vm_mm);
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* CRIS does not keep any page table caches in TLB */
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}
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static inline void flush_tlb(void)
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{
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flush_tlb_mm(current->mm);
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@ -57,7 +57,6 @@ do { \
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#define __flush_tlb_global() flush_tlb_all()
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#define flush_tlb() flush_tlb_all()
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#define flush_tlb_kernel_range(start, end) flush_tlb_all()
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#define flush_tlb_pgtables(mm,start,end) do { } while(0)
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#else
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@ -66,7 +65,6 @@ do { \
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#define flush_tlb_mm(mm) BUG()
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#define flush_tlb_page(vma,addr) BUG()
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#define flush_tlb_range(mm,start,end) BUG()
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#define flush_tlb_pgtables(mm,start,end) BUG()
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#define flush_tlb_kernel_range(start, end) BUG()
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#endif
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@ -52,10 +52,4 @@ static inline void flush_tlb_kernel_page(unsigned long addr)
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BUG();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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BUG();
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}
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#endif /* _H8300_TLBFLUSH_H */
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@ -83,19 +83,6 @@ flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
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#endif
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}
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/*
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* Flush the TLB entries mapping the virtually mapped linear page
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* table corresponding to address range [START-END).
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*/
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static inline void
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flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long end)
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{
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/*
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* Deprecated. The virtual page table is now flushed via the normal gather/flush
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* interface (see tlb.h).
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*/
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}
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/*
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* Flush the local TLB. Invoked from another cpu using an IPI.
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*/
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@ -12,7 +12,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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extern void local_flush_tlb_all(void);
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@ -93,8 +92,6 @@ static __inline__ void __flush_tlb_all(void)
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);
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}
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#define flush_tlb_pgtables(mm, start, end) do { } while (0)
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extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
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#endif /* _ASM_M32R_TLBFLUSH_H */
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@ -92,11 +92,6 @@ static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end
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flush_tlb_all();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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#else
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@ -219,11 +214,6 @@ static inline void flush_tlb_kernel_page (unsigned long addr)
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sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG);
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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#endif
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#endif /* _M68K_TLBFLUSH_H */
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@ -52,10 +52,4 @@ static inline void flush_tlb_kernel_page(unsigned long addr)
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BUG();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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BUG();
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}
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#endif /* _M68KNOMMU_TLBFLUSH_H */
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@ -11,7 +11,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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extern void local_flush_tlb_all(void);
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extern void local_flush_tlb_mm(struct mm_struct *mm);
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@ -45,10 +44,4 @@ extern void flush_tlb_one(unsigned long vaddr);
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#endif /* CONFIG_SMP */
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* Nothing to do on MIPS. */
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}
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#endif /* __ASM_TLBFLUSH_H */
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@ -57,10 +57,6 @@ static inline void flush_tlb_mm(struct mm_struct *mm)
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#endif
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}
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extern __inline__ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end)
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{
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}
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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unsigned long addr)
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{
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@ -8,7 +8,6 @@
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* - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@ -174,15 +173,5 @@ extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
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*/
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extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
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/*
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* This is called in munmap when we have freed up some page-table
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* pages. We don't need to do anything here, there's nothing special
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* about our page-table pages. -- paulus
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*/
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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#endif /*__KERNEL__ */
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#endif /* _ASM_POWERPC_TLBFLUSH_H */
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@ -14,7 +14,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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/*
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@ -152,10 +151,4 @@ static inline void flush_tlb_range(struct vm_area_struct *vma,
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#endif
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* S/390 does not keep any page table caches in TLB */
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}
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#endif /* _S390_TLBFLUSH_H */
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@ -9,7 +9,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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extern void local_flush_tlb_all(void);
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extern void local_flush_tlb_mm(struct mm_struct *mm);
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@ -47,9 +46,4 @@ extern void flush_tlb_one(unsigned long asid, unsigned long page);
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#endif /* CONFIG_SMP */
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* Nothing to do */
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}
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#endif /* __ASM_SH_TLBFLUSH_H */
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@ -20,10 +20,6 @@ extern void flush_tlb_mm(struct mm_struct *mm);
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extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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@ -13,7 +13,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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#ifdef CONFIG_SMP
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@ -42,11 +41,6 @@ BTFIXUPDEF_CALL(void, flush_tlb_mm, struct mm_struct *)
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BTFIXUPDEF_CALL(void, flush_tlb_range, struct vm_area_struct *, unsigned long, unsigned long)
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BTFIXUPDEF_CALL(void, flush_tlb_page, struct vm_area_struct *, unsigned long)
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// Thanks to Anton Blanchard, our pagetables became uncached in 2.4. Wee!
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// extern void flush_tlb_pgtables(struct mm_struct *mm,
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// unsigned long start, unsigned long end);
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#define flush_tlb_pgtables(mm, start, end) do{ }while(0)
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#define flush_tlb_all() BTFIXUP_CALL(flush_tlb_all)()
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#define flush_tlb_mm(mm) BTFIXUP_CALL(flush_tlb_mm)(mm)
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#define flush_tlb_range(vma,start,end) BTFIXUP_CALL(flush_tlb_range)(vma,start,end)
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@ -41,11 +41,4 @@ do { flush_tsb_kernel_range(start,end); \
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#endif /* ! CONFIG_SMP */
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static inline void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end)
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{
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/* We don't use virtual page tables for TLB miss processing
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* any more. Nowadays we use the TSB.
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*/
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}
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#endif /* _SPARC64_TLBFLUSH_H */
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@ -17,7 +17,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_kernel_vm() flushes the kernel vm area
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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*/
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extern void flush_tlb_all(void);
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@ -29,9 +28,4 @@ extern void flush_tlb_kernel_vm(void);
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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extern void __flush_tlb_one(unsigned long addr);
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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}
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#endif
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@ -61,10 +61,4 @@ static inline void flush_tlb_kernel_page(unsigned long addr)
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BUG ();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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BUG ();
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}
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#endif /* __V850_TLBFLUSH_H__ */
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@ -78,7 +78,6 @@
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
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* - flush_tlb_others(cpumask, mm, va) flushes a TLBs on other cpus
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*
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* ..but the i386 has somewhat limited tlb flushing capabilities,
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@ -166,10 +165,4 @@ static inline void flush_tlb_kernel_range(unsigned long start,
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flush_tlb_all();
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}
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static inline void flush_tlb_pgtables(struct mm_struct *mm,
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unsigned long start, unsigned long end)
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{
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/* i386 does not keep any page table caches in TLB */
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}
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#endif /* _I386_TLBFLUSH_H */
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@ -31,7 +31,6 @@ static inline void __flush_tlb_all(void)
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* - flush_tlb_page(vma, vmaddr) flushes one page
|
||||
* - flush_tlb_range(vma, start, end) flushes a range of pages
|
||||
* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
|
||||
* - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
|
||||
*
|
||||
* x86-64 can only flush individual pages or full VMs. For a range flush
|
||||
* we always do the full VM. Might be worth trying if for a small
|
||||
|
|
@ -98,12 +97,4 @@ static inline void flush_tlb_kernel_range(unsigned long start,
|
|||
flush_tlb_all();
|
||||
}
|
||||
|
||||
static inline void flush_tlb_pgtables(struct mm_struct *mm,
|
||||
unsigned long start, unsigned long end)
|
||||
{
|
||||
/* x86_64 does not keep any page table caches in a software TLB.
|
||||
The CPUs do in their hardware TLBs, but they are handled
|
||||
by the normal TLB flushing algorithms. */
|
||||
}
|
||||
|
||||
#endif /* _X8664_TLBFLUSH_H */
|
||||
|
|
|
|||
|
|
@ -41,17 +41,6 @@ extern void flush_tlb_range(struct vm_area_struct*,unsigned long,unsigned long);
|
|||
|
||||
#define flush_tlb_kernel_range(start,end) flush_tlb_all()
|
||||
|
||||
|
||||
/* This is calld in munmap when we have freed up some page-table pages.
|
||||
* We don't need to do anything here, there's nothing special about our
|
||||
* page-table pages.
|
||||
*/
|
||||
|
||||
static inline void flush_tlb_pgtables(struct mm_struct *mm,
|
||||
unsigned long start, unsigned long end)
|
||||
{
|
||||
}
|
||||
|
||||
/* TLB operations. */
|
||||
|
||||
static inline unsigned long itlb_probe(unsigned long addr)
|
||||
|
|
|
|||
|
|
@ -259,9 +259,6 @@ void free_pgd_range(struct mmu_gather **tlb,
|
|||
continue;
|
||||
free_pud_range(*tlb, pgd, addr, next, floor, ceiling);
|
||||
} while (pgd++, addr = next, addr != end);
|
||||
|
||||
if (!(*tlb)->fullmm)
|
||||
flush_tlb_pgtables((*tlb)->mm, start, end);
|
||||
}
|
||||
|
||||
void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *vma,
|
||||
|
|
|
|||
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