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-rw-r--r--include/linux/ftrace.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 6cd8c0ee4b6f..eae6548efbf0 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -263,7 +263,18 @@ static inline void ftrace_kill(void) { }
#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_STACK_TRACER
+
+#define STACK_TRACE_ENTRIES 500
+
+struct stack_trace;
+
+extern unsigned stack_trace_index[];
+extern struct stack_trace stack_trace_max;
+extern unsigned long stack_trace_max_size;
+extern arch_spinlock_t stack_trace_max_lock;
+
extern int stack_tracer_enabled;
+void stack_trace_print(void);
int
stack_trace_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,