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#ifndef __PARISC_MMU_CONTEXT_H

#define __PARISC_MMU_CONTEXT_H

#include <asm/pgalloc.h>

static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk, unsigned cpu)

{

}

/* on PA-RISC, we actually have enough contexts to justify an allocator

 * for them.  prumpf */

extern unsigned long alloc_sid(void);

extern void free_sid(unsigned long);

static inline int

init_new_context(struct task_struct *tsk, struct mm_struct *mm)

{

        if (atomic_read(&mm->mm_users) != 1)

            BUG();

        mm->context = alloc_sid();

        return 0;

}

static inline void

destroy_context(struct mm_struct *mm)

{

        free_sid(mm->context);

        mm->context = 0;

}

static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk, unsigned cpu)

{

        if (prev != next) {

                mtctl(__pa(next->pgd), 25);

                load_context(next->context);

        }

}

static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)

{

        /*

         * Activate_mm is our one chance to allocate a space id

         * for a new mm created in the exec path. There's also

         * some lazy tlb stuff, which is currently dead code, but

         * we only allocate a space id if one hasn't been allocated

         * already, so we should be OK.

         */

        if (next == &init_mm) BUG(); /* Should never happen */

        if (next->context == 0)

            next->context = alloc_sid();

        switch_mm(prev,next,current,0);

}

#endif