1 files changed, 27 insertions, 0 deletions

diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index ba29a0613e66..a24340b3e9e1 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -3,11 +3,26 @@
 #define __LINUX_STACKTRACE_H
 
 #include <linux/types.h>
+#include <asm/errno.h>
 
 struct task_struct;
 struct pt_regs;
 
 #ifdef CONFIG_STACKTRACE
+void stack_trace_print(unsigned long *trace, unsigned int nr_entries,
+                       int spaces);
+int stack_trace_snprint(char *buf, size_t size, unsigned long *entries,
+                        unsigned int nr_entries, int spaces);
+unsigned int stack_trace_save(unsigned long *store, unsigned int size,
+                              unsigned int skipnr);
+unsigned int stack_trace_save_tsk(struct task_struct *task,
+                                  unsigned long *store, unsigned int size,
+                                  unsigned int skipnr);
+unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
+                                   unsigned int size, unsigned int skipnr);
+unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
+
+/* Internal interfaces. Do not use in generic code */
 struct stack_trace {
         unsigned int nr_entries, max_entries;
         unsigned long *entries;
@@ -41,4 +56,16 @@ extern void save_stack_trace_user(struct stack_trace *trace);
 # define save_stack_trace_tsk_reliable(tsk, trace)      ({ -ENOSYS; })
 #endif /* CONFIG_STACKTRACE */
 
+#if defined(CONFIG_STACKTRACE) && defined(CONFIG_HAVE_RELIABLE_STACKTRACE)
+int stack_trace_save_tsk_reliable(struct task_struct *tsk, unsigned long *store,
+                                  unsigned int size);
+#else
+static inline int stack_trace_save_tsk_reliable(struct task_struct *tsk,
+                                                unsigned long *store,
+                                                unsigned int size)
+{
+        return -ENOSYS;
+}
+#endif
+
 #endif /* __LINUX_STACKTRACE_H */