diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
new file mode 100644
index 0000000..a08ace8
--- /dev/null
+++ b/include/linux/stacktrace.h
@@ -0,0 +1,37 @@
+#ifndef __LINUX_STACKTRACE_H
+#define __LINUX_STACKTRACE_H
+
+struct task_struct;
+struct pt_regs;
+
+#ifdef CONFIG_STACKTRACE
+struct task_struct;
+
+struct stack_trace {
+	unsigned int nr_entries, max_entries;
+	unsigned long *entries;
+	int skip;	
+};
+
+extern void save_stack_trace(struct stack_trace *trace);
+extern void save_stack_trace_regs(struct pt_regs *regs,
+				  struct stack_trace *trace);
+extern void save_stack_trace_tsk(struct task_struct *tsk,
+				struct stack_trace *trace);
+
+extern void print_stack_trace(struct stack_trace *trace, int spaces);
+
+#ifdef CONFIG_USER_STACKTRACE_SUPPORT
+extern void save_stack_trace_user(struct stack_trace *trace);
+#else
+# define save_stack_trace_user(trace)              do { } while (0)
+#endif
+
+#else
+# define save_stack_trace(trace)			do { } while (0)
+# define save_stack_trace_tsk(tsk, trace)		do { } while (0)
+# define save_stack_trace_user(trace)			do { } while (0)
+# define print_stack_trace(trace, spaces)		do { } while (0)
+#endif
+
+#endif