ftrace: add self-tests

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 31 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 83e257e38084..88edbf1f6788 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -99,6 +99,10 @@ struct tracer {
         void                    (*start)(struct trace_iterator *iter);
         void                    (*stop)(struct trace_iterator *iter);
         void                    (*ctrl_update)(struct trace_array *tr);
+#ifdef CONFIG_FTRACE_STARTUP_TEST
+        int                     (*selftest)(struct tracer *trace,
+                                            struct trace_array *tr);
+#endif
         struct tracer           *next;
         int                     print_max;
 };
@@ -185,4 +189,31 @@ extern int unregister_tracer_switch(struct tracer_switch_ops *ops);
 extern unsigned long ftrace_update_tot_cnt;
 #endif
 
+#ifdef CONFIG_FTRACE_STARTUP_TEST
+#ifdef CONFIG_FTRACE
+extern int trace_selftest_startup_function(struct tracer *trace,
+                                           struct trace_array *tr);
+#endif
+#ifdef CONFIG_IRQSOFF_TRACER
+extern int trace_selftest_startup_irqsoff(struct tracer *trace,
+                                          struct trace_array *tr);
+#endif
+#ifdef CONFIG_PREEMPT_TRACER
+extern int trace_selftest_startup_preemptoff(struct tracer *trace,
+                                             struct trace_array *tr);
+#endif
+#if defined(CONFIG_IRQSOFF_TRACER) && defined(CONFIG_PREEMPT_TRACER)
+extern int trace_selftest_startup_preemptirqsoff(struct tracer *trace,
+                                                 struct trace_array *tr);
+#endif
+#ifdef CONFIG_SCHED_TRACER
+extern int trace_selftest_startup_wakeup(struct tracer *trace,
+                                         struct trace_array *tr);
+#endif
+#ifdef CONFIG_CONTEXT_SWITCH_TRACER
+extern int trace_selftest_startup_sched_switch(struct tracer *trace,
+                                               struct trace_array *tr);
+#endif
+#endif /* CONFIG_FTRACE_STARTUP_TEST */
+
 #endif /* _LINUX_KERNEL_TRACE_H */