1 files changed, 54 insertions, 0 deletions

diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
new file mode 100644
index 000000000000..54f42e8b0105
--- /dev/null
+++ b/arch/um/include/asm/mmu_context.h
@@ -0,0 +1,54 @@
+/* 
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __UM_MMU_CONTEXT_H
+#define __UM_MMU_CONTEXT_H
+
+#include "linux/sched.h"
+#include "um_mmu.h"
+
+extern void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
+extern void arch_exit_mmap(struct mm_struct *mm);
+
+#define get_mmu_context(task) do ; while(0)
+#define activate_context(tsk) do ; while(0)
+
+#define deactivate_mm(tsk,mm)   do { } while (0)
+
+extern void force_flush_all(void);
+
+static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
+{
+        /*
+         * This is called by fs/exec.c and sys_unshare()
+         * when the new ->mm is used for the first time.
+         */
+        __switch_mm(&new->context.id);
+        arch_dup_mmap(old, new);
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, 
+                             struct task_struct *tsk)
+{
+        unsigned cpu = smp_processor_id();
+
+        if(prev != next){
+                cpu_clear(cpu, prev->cpu_vm_mask);
+                cpu_set(cpu, next->cpu_vm_mask);
+                if(next != &init_mm)
+                        __switch_mm(&next->context.id);
+        }
+}
+
+static inline void enter_lazy_tlb(struct mm_struct *mm, 
+                                  struct task_struct *tsk)
+{
+}
+
+extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
+
+extern void destroy_context(struct mm_struct *mm);
+
+#endif