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Diffstat (limited to 'arch/x86/kernel/dumpstack.h')
-rw-r--r--arch/x86/kernel/dumpstack.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h
index 4fd1420faff..e1a93be4fd4 100644
--- a/arch/x86/kernel/dumpstack.h
+++ b/arch/x86/kernel/dumpstack.h
@@ -14,6 +14,8 @@
#define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
#endif
+#include <linux/uaccess.h>
+
extern void
show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
unsigned long *stack, unsigned long bp, char *log_lvl);
@@ -29,4 +31,26 @@ struct stack_frame {
struct stack_frame *next_frame;
unsigned long return_address;
};
+
+struct stack_frame_ia32 {
+ u32 next_frame;
+ u32 return_address;
+};
+
+static inline unsigned long rewind_frame_pointer(int n)
+{
+ struct stack_frame *frame;
+
+ get_bp(frame);
+
+#ifdef CONFIG_FRAME_POINTER
+ while (n--) {
+ if (probe_kernel_address(&frame->next_frame, frame))
+ break;
+ }
#endif
+
+ return (unsigned long)frame;
+}
+
+#endif /* DUMPSTACK_H */