1 files changed, 18 insertions, 0 deletions

diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h
index cf86a5e73815..6c75151a3cca 100644
--- a/arch/x86/include/asm/stacktrace.h
+++ b/arch/x86/include/asm/stacktrace.h
@@ -5,6 +5,23 @@ extern int kstack_depth_to_print;
 
 int x86_is_stack_id(int id, char *name);
 
+struct thread_info;
+struct stacktrace_ops;
+
+typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
+                                      unsigned long *stack,
+                                      unsigned long bp,
+                                      const struct stacktrace_ops *ops,
+                                      void *data,
+                                      unsigned long *end,
+                                      int *graph);
+
+extern unsigned long
+print_context_stack(struct thread_info *tinfo,
+                    unsigned long *stack, unsigned long bp,
+                    const struct stacktrace_ops *ops, void *data,
+                    unsigned long *end, int *graph);
+
 /* Generic stack tracer with callbacks */
 
 struct stacktrace_ops {
@@ -14,6 +31,7 @@ struct stacktrace_ops {
         void (*address)(void *data, unsigned long address, int reliable);
         /* On negative return stop dumping */
         int (*stack)(void *data, char *name);
+        walk_stack_t    walk_stack;
 };
 
 void dump_trace(struct task_struct *tsk, struct pt_regs *regs,