From b1818748b0cf9427e48acf9713295e829a0d715f Mon Sep 17 00:00:00 2001
From: Markus Metzger <markus.t.metzger@intel.com>
Date: Mon, 19 Jan 2009 10:31:01 +0100
Subject: x86, ftrace, hw-branch-tracer: dump trace on oops

Dump the branch trace on an oops (based on ftrace_dump_on_oops).

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 include/linux/ftrace.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include/linux/ftrace.h')

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 0547214..9f7880d 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -496,4 +496,17 @@ static inline int test_tsk_trace_graph(struct task_struct *tsk)
 
 #endif /* CONFIG_TRACING */
 
+
+#ifdef CONFIG_HW_BRANCH_TRACER
+
+void trace_hw_branch(u64 from, u64 to);
+void trace_hw_branch_oops(void);
+
+#else /* CONFIG_HW_BRANCH_TRACER */
+
+static inline void trace_hw_branch(u64 from, u64 to) {}
+static inline void trace_hw_branch_oops(void) {}
+
+#endif /* CONFIG_HW_BRANCH_TRACER */
+
 #endif /* _LINUX_FTRACE_H */
-- 
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