linux_kernel/arch/openrisc/include/asm/tlbflush.h

/*
 * OpenRISC Linux
 *
 * Linux architectural port borrowing liberally from similar works of
 * others.  All original copyrights apply as per the original source
 * declaration.
 *
 * OpenRISC implementation:
 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
 * et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __ASM_OPENRISC_TLBFLUSH_H
#define __ASM_OPENRISC_TLBFLUSH_H

#include <linux/mm.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/current.h>
#include <linux/sched.h>

/*
 *  - flush_tlb() flushes the current mm struct TLBs
 *  - flush_tlb_all() flushes all processes TLBs
 *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
 *  - flush_tlb_page(vma, vmaddr) flushes one page
 *  - flush_tlb_range(mm, start, end) flushes a range of pages
 */
extern void local_flush_tlb_all(void);
extern void local_flush_tlb_mm(struct mm_struct *mm);
extern void local_flush_tlb_page(struct vm_area_struct *vma,
				 unsigned long addr);
extern void local_flush_tlb_range(struct vm_area_struct *vma,
				  unsigned long start,
				  unsigned long end);

#ifndef CONFIG_SMP
#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
#else
extern void flush_tlb_all(void);
extern void flush_tlb_mm(struct mm_struct *mm);
extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
			    unsigned long end);
#endif

static inline void flush_tlb(void)
{
	flush_tlb_mm(current->mm);
}

static inline void flush_tlb_kernel_range(unsigned long start,
					  unsigned long end)
{
	flush_tlb_range(NULL, start, end);
}

#endif /* __ASM_OPENRISC_TLBFLUSH_H */