arch/microblaze/include/asm/tlbflush.h

Source file repositories/reference/linux-study-clean/arch/microblaze/include/asm/tlbflush.h

File Facts

System
Linux kernel
Corpus path
arch/microblaze/include/asm/tlbflush.h
Extension
.h
Size
1687 bytes
Lines
54
Domain
Architecture Layer
Bucket
arch/microblaze
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_MICROBLAZE_TLBFLUSH_H
#define _ASM_MICROBLAZE_TLBFLUSH_H

#include <linux/sched.h>
#include <linux/threads.h>
#include <asm/processor.h>	/* For TASK_SIZE */
#include <asm/mmu.h>
#include <asm/page.h>

extern void _tlbie(unsigned long address);
extern void _tlbia(void);

#define __tlbia()	{ preempt_disable(); _tlbia(); preempt_enable(); }
#define __tlbie(x)	{ _tlbie(x); }

static inline void local_flush_tlb_all(void)
	{ __tlbia(); }
static inline void local_flush_tlb_mm(struct mm_struct *mm)
	{ __tlbia(); }
static inline void local_flush_tlb_page(struct vm_area_struct *vma,
				unsigned long vmaddr)
	{ __tlbie(vmaddr); }
static inline void local_flush_tlb_range(struct vm_area_struct *vma,
		unsigned long start, unsigned long end)
	{ __tlbia(); }

#define flush_tlb_kernel_range(start, end)	do { } while (0)

#define update_mmu_cache_range(vmf, vma, addr, ptep, nr) do { } while (0)
#define update_mmu_cache(vma, addr, pte) \
	update_mmu_cache_range(NULL, vma, addr, ptep, 1)

#define flush_tlb_all local_flush_tlb_all
#define flush_tlb_mm local_flush_tlb_mm
#define flush_tlb_page local_flush_tlb_page
#define flush_tlb_range local_flush_tlb_range

/*
 * This is called 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.  -- paulus
 */
static inline void flush_tlb_pgtables(struct mm_struct *mm,
	unsigned long start, unsigned long end) { }

#endif /* _ASM_MICROBLAZE_TLBFLUSH_H */

Annotation

Implementation Notes