tlb.h File Reference

#include <linux/swap.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>

Go to the source code of this file.

Data Structures
struct	mmu_gather_batch
struct	mmu_gather

Macros
#define	MMU_GATHER_BUNDLE   8
#define	MAX_GATHER_BATCH   ((PAGE_SIZE - sizeof(struct mmu_gather_batch)) / sizeof(void *))
#define	HAVE_GENERIC_MMU_GATHER
#define	tlb_remove_tlb_entry(tlb, ptep, address)
#define	__tlb_remove_pmd_tlb_entry(tlb, pmdp, address)   do {} while (0)
#define	tlb_remove_pmd_tlb_entry(tlb, pmdp, address)
#define	pte_free_tlb(tlb, ptep, address)
#define	pud_free_tlb(tlb, pudp, address)
#define	pmd_free_tlb(tlb, pmdp, address)
#define	tlb_migrate_finish(mm)   do {} while (0)

Functions
void	tlb_gather_mmu (struct mmu_gather *tlb, struct mm_struct *mm, bool fullmm)
void	tlb_flush_mmu (struct mmu_gather *tlb)
void	tlb_finish_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end)
int	__tlb_remove_page (struct mmu_gather *tlb, struct page *page)

Macro Definition Documentation

#define __tlb_remove_pmd_tlb_entry	(		tlb,
			pmdp,
			address
	)		do {} while (0)

tlb_remove_pmd_tlb_entry - remember a pmd mapping for later tlb invalidation This is a nop so far, because only x86 needs it.

Definition at line 150 of file tlb.h.

#define HAVE_GENERIC_MMU_GATHER

Definition at line 101 of file tlb.h.

#define MAX_GATHER_BATCH   ((PAGE_SIZE - sizeof(struct mmu_gather_batch)) / sizeof(void *))

Definition at line 78 of file tlb.h.

#define MMU_GATHER_BUNDLE   8

Definition at line 69 of file tlb.h.

#define pmd_free_tlb	(		tlb,
			pmdp,
			address
	)

Value:

do {                            \
        tlb->need_flush = 1;                \
        __pmd_free_tlb(tlb, pmdp, address);     \
    } while (0)

Definition at line 173 of file tlb.h.

#define pte_free_tlb	(		tlb,
			ptep,
			address
	)

Value:

do {                            \
        tlb->need_flush = 1;                \
        __pte_free_tlb(tlb, ptep, address);     \
    } while (0)

Definition at line 159 of file tlb.h.

#define pud_free_tlb	(		tlb,
			pudp,
			address
	)

Value:

do {                            \
        tlb->need_flush = 1;                \
        __pud_free_tlb(tlb, pudp, address);     \
    } while (0)

Definition at line 166 of file tlb.h.

#define tlb_migrate_finish

(

mm

)

do {} while (0)

Definition at line 179 of file tlb.h.

#define tlb_remove_pmd_tlb_entry	(		tlb,
			pmdp,
			address
	)

Value:

do {                            \
        tlb->need_flush = 1;                \
        __tlb_remove_pmd_tlb_entry(tlb, pmdp, address); \
    } while (0)

Definition at line 153 of file tlb.h.

#define tlb_remove_tlb_entry	(		tlb,
			ptep,
			address
	)

Value:

do {                            \
        tlb->need_flush = 1;                \
        __tlb_remove_tlb_entry(tlb, ptep, address); \
    } while (0)

tlb_remove_tlb_entry - remember a pte unmapping for later tlb invalidation.

Record the fact that pte's were really umapped in ->need_flush, so we can later optimise away the tlb invalidate. This helps when userspace is unmapping already-unmapped pages, which happens quite a lot.

Definition at line 139 of file tlb.h.

Function Documentation

int __tlb_remove_page	(	struct mmu_gather *	tlb,
		struct page *	page
	)

void tlb_finish_mmu	(	struct mmu_gather *	tlb,
		unsigned long	start,
		unsigned long	end
	)

void tlb_flush_mmu

(

struct mmu_gather *

tlb

)

void tlb_gather_mmu	(	struct mmu_gather *	tlb,
		struct mm_struct *	mm,
		bool	fullmm
	)