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-rw-r--r--kernel/include/linux/stacktrace.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/include/linux/stacktrace.h b/kernel/include/linux/stacktrace.h
new file mode 100644
index 000000000..0a34489a4
--- /dev/null
+++ b/kernel/include/linux/stacktrace.h
@@ -0,0 +1,40 @@
+#ifndef __LINUX_STACKTRACE_H
+#define __LINUX_STACKTRACE_H
+
+#include <linux/types.h>
+
+struct task_struct;
+struct pt_regs;
+
+#ifdef CONFIG_STACKTRACE
+struct stack_trace {
+ unsigned int nr_entries, max_entries;
+ unsigned long *entries;
+ int skip; /* input argument: How many entries to 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);
+extern int snprint_stack_trace(char *buf, size_t size,
+ 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)
+# define snprint_stack_trace(buf, size, trace, spaces) do { } while (0)
+#endif
+
+#endif