LXR linux/arch/sparc/include/asm/mmu_context

   1#ifndef __SPARC_MMU_CONTEXT_H
   2#define __SPARC_MMU_CONTEXT_H
   3
   4#include <asm/btfixup.h>
   5
   6#ifndef __ASSEMBLY__
   7
   8#include <asm-generic/mm_hooks.h>
   9
  10static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
  11{
  12}
  13
  14/*
  15 * Initialize a new mmu context.  This is invoked when a new
  16 * address space instance (unique or shared) is instantiated.
  17 */
  18#define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
  19
  20/*
  21 * Destroy a dead context.  This occurs when mmput drops the
  22 * mm_users count to zero, the mmaps have been released, and
  23 * all the page tables have been flushed.  Our job is to destroy
  24 * any remaining processor-specific state.
  25 */
  26BTFIXUPDEF_CALL(void, destroy_context, struct mm_struct *)
  27
  28#define destroy_context(mm) BTFIXUP_CALL(destroy_context)(mm)
  29
  30/* Switch the current MM context. */
  31BTFIXUPDEF_CALL(void, switch_mm, struct mm_struct *, struct mm_struct *, struct task_struct *)
  32
  33#define switch_mm(old_mm, mm, tsk) BTFIXUP_CALL(switch_mm)(old_mm, mm, tsk)
  34
  35#define deactivate_mm(tsk,mm)   do { } while (0)
  36
  37/* Activate a new MM instance for the current task. */
  38#define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL)
  39
  40#endif /* !(__ASSEMBLY__) */
  41
  42#endif /* !(__SPARC_MMU_CONTEXT_H) */
  43