/*
* Copyright ( C ) 2010 Tobias Klauser < tklauser @ distanz . ch >
* Copyright ( C ) 1996 , 1997 , 1998 , 1999 by Ralf Baechle
* Copyright ( C ) 1999 Silicon Graphics , Inc .
*
* based on MIPS asm / mmu_context . h
*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*/
#ifndef _ASM_NIOS2_MMU_CONTEXT_H
#define _ASM_NIOS2_MMU_CONTEXT_H
#include <linux/mm_types.h>
#include <asm -generic/mm_hooks.h>
extern void mmu_context_init(void );
extern unsigned long get_pid_from_context(mm_context_t *ctx);
/*
* For the fast tlb miss handlers , we keep a pointer to the current pgd .
* processor .
*/
extern pgd_t *pgd_current;
/*
* Initialize the context related info for a new mm_struct instance .
*
* Set all new contexts to 0 , that way the generation will never match
* the currently running generation when this context is switched in .
*/
#define init_new_context init_new_context
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
mm->context = 0 ;
return 0 ;
}
void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
/*
* After we have set current - > mm to a new value , this activates
* the context for the new mm so we see the new mappings .
*/
#define activate_mm activate_mm
void activate_mm(struct mm_struct *prev, struct mm_struct *next);
#include <asm -generic/mmu_context.h>
#endif /* _ASM_NIOS2_MMU_CONTEXT_H */
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