23 static void flush_ldt(void *mm)  in flush_ldt()  argument
59 		if (current->mm->cpu_vm_mask != (1<<smp_processor_id()))  in alloc_ldt()
89 int init_new_context(struct task_struct *tsk, struct mm_struct *mm)  in init_new_context()  argument
94 	init_MUTEX(&mm->context.sem);  in init_new_context()
95 	mm->context.size = 0;  in init_new_context()
96 	old_mm = current->mm;  in init_new_context()
99 		retval = copy_ldt(&mm->context, &old_mm->context);  in init_new_context()
110 void destroy_context(struct mm_struct *mm)  in destroy_context()  argument
112 	if (mm->context.size) {  in destroy_context()
113 		if (mm->context.size*LDT_ENTRY_SIZE > PAGE_SIZE)  in destroy_context()
114 			vfree(mm->context.ldt);  in destroy_context()
116 			kfree(mm->context.ldt);  in destroy_context()
117 		mm->context.size = 0;  in destroy_context()
125 	struct mm_struct * mm = current->mm;  in read_ldt()  local
127 	if (!mm->context.size)  in read_ldt()
132 	down(&mm->context.sem);  in read_ldt()
133 	size = mm->context.size*LDT_ENTRY_SIZE;  in read_ldt()
138 	if (copy_to_user(ptr, mm->context.ldt, size))  in read_ldt()
140 	up(&mm->context.sem);  in read_ldt()
171 	struct mm_struct * mm = current->mm;  in write_ldt()  local
193 	down(&mm->context.sem);  in write_ldt()
194 	if (ldt_info.entry_number >= mm->context.size) {  in write_ldt()
195 		error = alloc_ldt(&current->mm->context, ldt_info.entry_number+1, 1);  in write_ldt()
200 	lp = (__u32 *) ((ldt_info.entry_number << 3) + (char *) mm->context.ldt);  in write_ldt()
238 	up(&mm->context.sem);  in write_ldt()