kernel/trace/trace_selftest.c

2 /* Include in trace.c */
55 	printk(KERN_CONT ".. corrupted trace buffer .. ");
60  * Test the trace buffer to see if all the elements
97 static inline void warn_failed_init_tracer(struct tracer *trace, int init_ret)
100 		trace->name, init_ret);
205 	 * Probe 1 will trace function 1.
206 	 * Probe 2 will trace function 2.
207 	 * Probe 3 will trace functions 1 and 2.
290 	/* Remove trace function from probe 3 */
356 static int trace_selftest_startup_dynamic_tracing(struct tracer *trace,
386 	ret = tracer_init(trace, tr);
388 		warn_failed_init_tracer(trace, ret);
416 	/* check the trace buffer */
424 		trace->reset(tr);
432 	trace->reset(tr);
572 # define trace_selftest_startup_dynamic_tracing(trace, tr, func) ({ 0; })
627 	 * If DYNAMIC_FTRACE is not set, then we just trace all functions.
687  * Enable ftrace, sleep 1/10 second, and then read the trace
691 trace_selftest_startup_function(struct tracer *trace, struct trace_array *tr)
710 	ret = tracer_init(trace, tr);
712 		warn_failed_init_tracer(trace, ret);
722 	/* check the trace buffer */
726 	trace->reset(tr);
735 	ret = trace_selftest_startup_dynamic_tracing(trace, tr,
759 /* Maximum number of functions to trace before diagnosing a hang */
765 static int trace_graph_entry_watchdog(struct ftrace_graph_ent *trace)
779 	return trace_graph_entry(trace);
796 trace_selftest_startup_function_graph(struct tracer *trace,
818 		warn_failed_init_tracer(trace, ret);
835 	/* check the trace buffer */
870 	 * and make sure we get graph trace.
882 		warn_failed_init_tracer(trace, ret);
891 	/* check the trace buffer */
928 trace_selftest_startup_irqsoff(struct tracer *trace, struct trace_array *tr)
935 	ret = tracer_init(trace, tr);
937 		warn_failed_init_tracer(trace, ret);
954 	trace->stop(tr);
957 	/* check both trace buffers */
961 	trace->reset(tr);
977 trace_selftest_startup_preemptoff(struct tracer *trace, struct trace_array *tr)
997 	ret = tracer_init(trace, tr);
999 		warn_failed_init_tracer(trace, ret);
1016 	trace->stop(tr);
1019 	/* check both trace buffers */
1023 	trace->reset(tr);
1039 trace_selftest_startup_preemptirqsoff(struct tracer *trace, struct trace_array *tr)
1059 	ret = tracer_init(trace, tr);
1061 		warn_failed_init_tracer(trace, ret);
1082 	trace->stop(tr);
1085 	/* check both trace buffers */
1103 	trace->start(tr);
1112 	trace->stop(tr);
1115 	/* check both trace buffers */
1131 	trace->reset(tr);
1140 trace_selftest_startup_nop(struct tracer *trace, struct trace_array *tr)
1192 trace_selftest_startup_wakeup(struct tracer *trace, struct trace_array *tr)
1215 	ret = tracer_init(trace, tr);
1217 		warn_failed_init_tracer(trace, ret);
1245 	/* check both trace buffers */
1251 	trace->reset(tr);
1270 trace_selftest_startup_branch(struct tracer *trace, struct trace_array *tr)
1276 	ret = tracer_init(trace, tr);
1278 		warn_failed_init_tracer(trace, ret);
1286 	/* check the trace buffer */
1288 	trace->reset(tr);