arch: remove unicore32 port

[linux-2.6-block.git] / arch / unicore32 / include / asm / mmu_context.h

diff --git a/arch/unicore32/include/asm/mmu_context.h b/arch/unicore32/include/asm/mmu_context.h
deleted file mode 100644 (file)
index 388c0c8..0000000
--- a/arch/unicore32/include/asm/mmu_context.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * linux/arch/unicore32/include/asm/mmu_context.h
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Copyright (C) 2001-2010 GUAN Xue-tao
- */
-#ifndef __UNICORE_MMU_CONTEXT_H__
-#define __UNICORE_MMU_CONTEXT_H__
-
-#include <linux/compiler.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/vmacache.h>
-#include <linux/io.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cpu-single.h>
-
-#define init_new_context(tsk, mm)      0
-
-#define destroy_context(mm)            do { } while (0)
-
-/*
- * This is called when "tsk" is about to enter lazy TLB mode.
- *
- * mm:  describes the currently active mm context
- * tsk: task which is entering lazy tlb
- * cpu: cpu number which is entering lazy tlb
- *
- * tsk->mm will be NULL
- */
-static inline void
-enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-/*
- * This is the actual mm switch as far as the scheduler
- * is concerned.  No registers are touched.  We avoid
- * calling the CPU specific function when the mm hasn't
- * actually changed.
- */
-static inline void
-switch_mm(struct mm_struct *prev, struct mm_struct *next,
-         struct task_struct *tsk)
-{
-       unsigned int cpu = smp_processor_id();
-
-       if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next)
-               cpu_switch_mm(next->pgd, next);
-}
-
-#define deactivate_mm(tsk, mm) do { } while (0)
-#define activate_mm(prev, next)        switch_mm(prev, next, NULL)
-
-/*
- * We are inserting a "fake" vma for the user-accessible vector page so
- * gdb and friends can get to it through ptrace and /proc/<pid>/mem.
- * But we also want to remove it before the generic code gets to see it
- * during process exit or the unmapping of it would  cause total havoc.
- * (the macro is used as remove_vma() is static to mm/mmap.c)
- */
-#define arch_exit_mmap(mm) \
-do { \
-       struct vm_area_struct *high_vma = find_vma(mm, 0xffff0000); \
-       if (high_vma) { \
-               BUG_ON(high_vma->vm_next);  /* it should be last */ \
-               if (high_vma->vm_prev) \
-                       high_vma->vm_prev->vm_next = NULL; \
-               else \
-                       mm->mmap = NULL; \
-               rb_erase(&high_vma->vm_rb, &mm->mm_rb); \
-               vmacache_invalidate(mm); \
-               mm->map_count--; \
-               remove_vma(high_vma); \
-       } \
-} while (0)
-
-static inline int arch_dup_mmap(struct mm_struct *oldmm,
-                               struct mm_struct *mm)
-{
-       return 0;
-}
-
-static inline void arch_unmap(struct mm_struct *mm,
-                       unsigned long start, unsigned long end)
-{
-}
-
-static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
-               bool write, bool execute, bool foreign)
-{
-       /* by default, allow everything */
-       return true;
-}
-#endif