1 // SPDX-License-Identifier: GPL-2.0
12 	switch (entry->type) {  in trace_valid_entry()
33 	while ((event = ring_buffer_consume(buf->buffer, cpu, NULL, NULL))) {  in trace_test_buffer_cpu()
37 		 * The ring buffer is a size of trace_buf_size, if  in trace_test_buffer_cpu()
38 		 * we loop more than the size, there's something wrong  in trace_test_buffer_cpu()
47 				entry->type);  in trace_test_buffer_cpu()
57 	return -1;  in trace_test_buffer_cpu()
71 	arch_spin_lock(&buf->tr->max_lock);  in trace_test_buffer()
73 	cnt = ring_buffer_entries(buf->buffer);  in trace_test_buffer()
89 	arch_spin_unlock(&buf->tr->max_lock);  in trace_test_buffer()
101 		trace->name, init_ret);  in warn_failed_init_tracer()
191 	int ret = -1;  in trace_selftest_ops()
194 	pr_info("Testing dynamic ftrace ops #%d: ", cnt);  in trace_selftest_ops()
221 		register_ftrace_function(tr->ops);  in trace_selftest_ops()
257 	dyn_ops->func = trace_selftest_test_dyn_func;  in trace_selftest_ops()
336 		unregister_ftrace_function(tr->ops);  in trace_selftest_ops()
349 		ret = -1;  in trace_selftest_ops()
356 /* Test dynamic code modification and ftrace filters */
366 	/* The ftrace test PASSED */  in trace_selftest_startup_dynamic_tracing()
368 	pr_info("Testing dynamic ftrace: ");  in trace_selftest_startup_dynamic_tracing()
397 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_dynamic_tracing()
402 		ret = -1;  in trace_selftest_startup_dynamic_tracing()
418 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_dynamic_tracing()
425 		trace->reset(tr);  in trace_selftest_startup_dynamic_tracing()
427 		ret = -1;  in trace_selftest_startup_dynamic_tracing()
433 	trace->reset(tr);  in trace_selftest_startup_dynamic_tracing()
456 	 * The ftrace infrastructure should provide the recursion  in trace_selftest_test_recursion_func()
473 	 * all of ftrace features and nothing else is using the function  in trace_selftest_test_recursion_safe_func()
500 	pr_info("Testing ftrace recursion: ");  in trace_selftest_function_recursion()
526 	ret = -1;  in trace_selftest_function_recursion()
541 	pr_info("Testing ftrace recursion safe: ");  in trace_selftest_function_recursion()
559 	ret = -1;  in trace_selftest_function_recursion()
616 	pr_info("Testing ftrace regs%s: ",  in trace_selftest_function_regs()
631 	if (ret && ret != -ENODEV) {  in trace_selftest_function_regs()
643 			pr_cont("*registered save-regs without arch support* ");  in trace_selftest_function_regs()
659 	ret = -1;  in trace_selftest_function_regs()
687  * Simple verification test of ftrace function tracer.
688  * Enable ftrace, sleep 1/10 second, and then read the trace
724 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_function()
727 	trace->reset(tr);  in trace_selftest_startup_function()
732 		ret = -1;  in trace_selftest_startup_function()
749 	/* kill ftrace totally if we failed */  in trace_selftest_startup_function()
781 	const char *type = fixture->store_type_name;  in store_entry()
782 	int size = fixture->store_size;  in store_entry()  local
785 	p = fgraph_reserve_data(gops->idx, size);  in store_entry()
787 		snprintf(fixture->error_str_buf, ERRSTR_BUFLEN,  in store_entry()
792 	switch (size) {  in store_entry()
815 	const char *type = fixture->store_type_name;  in store_return()
817 	long long found = -1;  in store_return()
818 	int size;  in store_return()  local
821 	p = fgraph_retrieve_data(gops->idx, &size);  in store_return()
823 		snprintf(fixture->error_str_buf, ERRSTR_BUFLEN,  in store_return()
827 	if (fixture->store_size > size) {  in store_return()
828 		snprintf(fixture->error_str_buf, ERRSTR_BUFLEN,  in store_return()
829 			 "Retrieved size %d is smaller than expected %d\n",  in store_return()
830 			 size, (int)fixture->store_size);  in store_return()
834 	switch (fixture->store_size) {  in store_return()
854 		snprintf(fixture->error_str_buf, ERRSTR_BUFLEN,  in store_return()
858 	fixture->error_str = NULL;  in store_return()
866 	snprintf(fixture->error_str_buf, ERRSTR_BUFLEN,  in init_fgraph_fixture()
867 		 "Failed to execute storage %s\n", fixture->store_type_name);  in init_fgraph_fixture()
868 	fixture->error_str = fixture->error_str_buf;  in init_fgraph_fixture()
873 	return ftrace_set_filter(&fixture->gops.ops, func_name, len, 1);  in init_fgraph_fixture()
876 /* Test fgraph storage for each size */
879 	int size = fixture->store_size;  in test_graph_storage_single()  local
883 	pr_info("Testing fgraph storage of %d byte%s: ", size, str_plural(size));  in test_graph_storage_single()
886 	if (ret && ret != -ENODEV) {  in test_graph_storage_single()
888 		return -1;  in test_graph_storage_single()
891 	ret = register_ftrace_graph(&fixture->gops);  in test_graph_storage_single()
894 		return -1;  in test_graph_storage_single()
899 	unregister_ftrace_graph(&fixture->gops);  in test_graph_storage_single()
901 	if (fixture->error_str) {  in test_graph_storage_single()
902 		pr_cont("*** %s ***", fixture->error_str);  in test_graph_storage_single()
903 		return -1;  in test_graph_storage_single()
956 		if (ret && ret != -ENODEV) {  in test_graph_storage_multi()
965 		ret = register_ftrace_graph(&fixture->gops);  in test_graph_storage_multi()
975 	while (--j >= 0) {  in test_graph_storage_multi()
977 		unregister_ftrace_graph(&fixture->gops);  in test_graph_storage_multi()
979 		if (fixture->error_str && !printed) {  in test_graph_storage_multi()
980 			pr_cont("*** %s ***", fixture->error_str);  in test_graph_storage_multi()
985 	while (--i >= 0) {  in test_graph_storage_multi()
987 		ftrace_free_filter(&fixture->gops.ops);  in test_graph_storage_multi()
989 		if (fixture->error_str && !printed) {  in test_graph_storage_multi()
990 			pr_cont("*** %s ***", fixture->error_str);  in test_graph_storage_multi()
994 	return printed ? -1 : 0;  in test_graph_storage_multi()
1080 	tracing_reset_online_cpus(&tr->array_buffer);  in trace_selftest_startup_function_graph()
1095 		ret = -1;  in trace_selftest_startup_function_graph()
1102 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_function_graph()
1104 	/* Need to also simulate the tr->reset to remove this fgraph_ops */  in trace_selftest_startup_function_graph()
1112 		ret = -1;  in trace_selftest_startup_function_graph()
1123 	tracing_reset_online_cpus(&tr->array_buffer);  in trace_selftest_startup_function_graph()
1158 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_function_graph()
1173 		ret = -1;  in trace_selftest_startup_function_graph()
1198 	unsigned long save_max = tr->max_latency;  in trace_selftest_startup_irqsoff()
1210 	tr->max_latency = 0;  in trace_selftest_startup_irqsoff()
1222 	trace->stop(tr);  in trace_selftest_startup_irqsoff()
1226 	ret = trace_test_buffer(&tr->array_buffer, NULL);  in trace_selftest_startup_irqsoff()
1228 		ret = trace_test_buffer(&tr->max_buffer, &count);  in trace_selftest_startup_irqsoff()
1229 	trace->reset(tr);  in trace_selftest_startup_irqsoff()
1234 		ret = -1;  in trace_selftest_startup_irqsoff()
1237 	tr->max_latency = save_max;  in trace_selftest_startup_irqsoff()
1247 	unsigned long save_max = tr->max_latency;  in trace_selftest_startup_preemptoff()
1272 	tr->max_latency = 0;  in trace_selftest_startup_preemptoff()
1284 	trace->stop(tr);  in trace_selftest_startup_preemptoff()
1288 	ret = trace_test_buffer(&tr->array_buffer, NULL);  in trace_selftest_startup_preemptoff()
1290 		ret = trace_test_buffer(&tr->max_buffer, &count);  in trace_selftest_startup_preemptoff()
1291 	trace->reset(tr);  in trace_selftest_startup_preemptoff()
1296 		ret = -1;  in trace_selftest_startup_preemptoff()
1299 	tr->max_latency = save_max;  in trace_selftest_startup_preemptoff()
1309 	unsigned long save_max = tr->max_latency;  in trace_selftest_startup_preemptirqsoff()
1334 	tr->max_latency = 0;  in trace_selftest_startup_preemptirqsoff()
1350 	trace->stop(tr);  in trace_selftest_startup_preemptirqsoff()
1354 	ret = trace_test_buffer(&tr->array_buffer, NULL);  in trace_selftest_startup_preemptirqsoff()
1358 	ret = trace_test_buffer(&tr->max_buffer, &count);  in trace_selftest_startup_preemptirqsoff()
1364 		ret = -1;  in trace_selftest_startup_preemptirqsoff()
1369 	tr->max_latency = 0;  in trace_selftest_startup_preemptirqsoff()
1371 	trace->start(tr);  in trace_selftest_startup_preemptirqsoff()
1380 	trace->stop(tr);  in trace_selftest_startup_preemptirqsoff()
1384 	ret = trace_test_buffer(&tr->array_buffer, NULL);  in trace_selftest_startup_preemptirqsoff()
1388 	ret = trace_test_buffer(&tr->max_buffer, &count);  in trace_selftest_startup_preemptirqsoff()
1392 		ret = -1;  in trace_selftest_startup_preemptirqsoff()
1399 	trace->reset(tr);  in trace_selftest_startup_preemptirqsoff()
1400 	tr->max_latency = save_max;  in trace_selftest_startup_preemptirqsoff()
1424 	/* Make this a -deadline thread */  in trace_wakeup_test_thread()
1436 	complete(&x->is_ready);  in trace_wakeup_test_thread()
1440 	while (!x->go) {  in trace_wakeup_test_thread()
1445 	complete(&x->is_ready);  in trace_wakeup_test_thread()
1462 	unsigned long save_max = tr->max_latency;  in trace_selftest_startup_wakeup()
1472 	/* create a -deadline thread */  in trace_selftest_startup_wakeup()
1473 	p = kthread_run(trace_wakeup_test_thread, &data, "ftrace-test");  in trace_selftest_startup_wakeup()
1475 		printk(KERN_CONT "Failed to create ftrace wakeup test thread ");  in trace_selftest_startup_wakeup()
1476 		return -1;  in trace_selftest_startup_wakeup()
1479 	/* make sure the thread is running at -deadline policy */  in trace_selftest_startup_wakeup()
1490 	tr->max_latency = 0;  in trace_selftest_startup_wakeup()
1494 		 * Sleep to make sure the -deadline thread is asleep too.  in trace_selftest_startup_wakeup()
1514 	ret = trace_test_buffer(&tr->array_buffer, NULL);  in trace_selftest_startup_wakeup()
1516 		ret = trace_test_buffer(&tr->max_buffer, &count);  in trace_selftest_startup_wakeup()
1519 	trace->reset(tr);  in trace_selftest_startup_wakeup()
1522 	tr->max_latency = save_max;  in trace_selftest_startup_wakeup()
1529 		ret = -1;  in trace_selftest_startup_wakeup()
1555 	ret = trace_test_buffer(&tr->array_buffer, &count);  in trace_selftest_startup_branch()
1556 	trace->reset(tr);  in trace_selftest_startup_branch()
1561 		ret = -1;  in trace_selftest_startup_branch()