static int trace_selftest_ops(struct trace_array *tr, int cnt) { int save_ftrace_enabled = ftrace_enabled; struct ftrace_ops *dyn_ops; char *func1_name; char *func2_name; int len1; int len2; int ret = -1; printk(KERN_CONT "PASSED\n"); pr_info("Testing dynamic ftrace ops #%d: ", cnt); ftrace_enabled = 1; reset_counts(); /* Handle PPC64 '.' name */ func1_name = "*" __stringify(DYN_FTRACE_TEST_NAME); func2_name = "*" __stringify(DYN_FTRACE_TEST_NAME2); len1 = strlen(func1_name); len2 = strlen(func2_name); /* * Probe 1 will trace function 1. * Probe 2 will trace function 2. * Probe 3 will trace functions 1 and 2. */ ftrace_set_filter(&test_probe1, func1_name, len1, 1); ftrace_set_filter(&test_probe2, func2_name, len2, 1); ftrace_set_filter(&test_probe3, func1_name, len1, 1); ftrace_set_filter(&test_probe3, func2_name, len2, 0); register_ftrace_function(&test_probe1); register_ftrace_function(&test_probe2); register_ftrace_function(&test_probe3); /* First time we are running with main function */ if (cnt > 1) { ftrace_init_array_ops(tr, trace_selftest_test_global_func); register_ftrace_function(tr->ops); } DYN_FTRACE_TEST_NAME(); print_counts(); if (trace_selftest_test_probe1_cnt != 1) goto out; if (trace_selftest_test_probe2_cnt != 0) goto out; if (trace_selftest_test_probe3_cnt != 1) goto out; if (cnt > 1) { if (trace_selftest_test_global_cnt == 0) goto out; } DYN_FTRACE_TEST_NAME2(); print_counts(); if (trace_selftest_test_probe1_cnt != 1) goto out; if (trace_selftest_test_probe2_cnt != 1) goto out; if (trace_selftest_test_probe3_cnt != 2) goto out; /* Add a dynamic probe */ dyn_ops = kzalloc(sizeof(*dyn_ops), GFP_KERNEL); if (!dyn_ops) { printk("MEMORY ERROR "); goto out; } dyn_ops->func = trace_selftest_test_dyn_func; register_ftrace_function(dyn_ops); trace_selftest_test_global_cnt = 0; DYN_FTRACE_TEST_NAME(); print_counts(); if (trace_selftest_test_probe1_cnt != 2) goto out_free; if (trace_selftest_test_probe2_cnt != 1) goto out_free; if (trace_selftest_test_probe3_cnt != 3) goto out_free; if (cnt > 1) { if (trace_selftest_test_global_cnt == 0) goto out_free; } if (trace_selftest_test_dyn_cnt == 0) goto out_free; DYN_FTRACE_TEST_NAME2(); print_counts(); if (trace_selftest_test_probe1_cnt != 2) goto out_free; if (trace_selftest_test_probe2_cnt != 2) goto out_free; if (trace_selftest_test_probe3_cnt != 4) goto out_free; ret = 0; out_free: unregister_ftrace_function(dyn_ops); kfree(dyn_ops); out: /* Purposely unregister in the same order */ unregister_ftrace_function(&test_probe1); unregister_ftrace_function(&test_probe2); unregister_ftrace_function(&test_probe3); if (cnt > 1) unregister_ftrace_function(tr->ops); ftrace_reset_array_ops(tr); /* Make sure everything is off */ reset_counts(); DYN_FTRACE_TEST_NAME(); DYN_FTRACE_TEST_NAME(); if (trace_selftest_test_probe1_cnt || trace_selftest_test_probe2_cnt || trace_selftest_test_probe3_cnt || trace_selftest_test_global_cnt || trace_selftest_test_dyn_cnt) ret = -1; ftrace_enabled = save_ftrace_enabled; return ret; }
static int trace_selftest_ops(int cnt) { int save_ftrace_enabled = ftrace_enabled; struct ftrace_ops *dyn_ops; char *func1_name; char *func2_name; int len1; int len2; int ret = -1; printk(KERN_CONT "PASSED\n"); pr_info("Testing dynamic ftrace ops #%d: ", cnt); ftrace_enabled = 1; reset_counts(); /* */ func1_name = "*" __stringify(DYN_FTRACE_TEST_NAME); func2_name = "*" __stringify(DYN_FTRACE_TEST_NAME2); len1 = strlen(func1_name); len2 = strlen(func2_name); /* */ ftrace_set_filter(&test_probe1, func1_name, len1, 1); ftrace_set_filter(&test_probe2, func2_name, len2, 1); ftrace_set_filter(&test_probe3, func1_name, len1, 1); ftrace_set_filter(&test_probe3, func2_name, len2, 0); register_ftrace_function(&test_probe1); register_ftrace_function(&test_probe2); register_ftrace_function(&test_probe3); register_ftrace_function(&test_global); DYN_FTRACE_TEST_NAME(); print_counts(); if (trace_selftest_test_probe1_cnt != 1) goto out; if (trace_selftest_test_probe2_cnt != 0) goto out; if (trace_selftest_test_probe3_cnt != 1) goto out; if (trace_selftest_test_global_cnt == 0) goto out; DYN_FTRACE_TEST_NAME2(); print_counts(); if (trace_selftest_test_probe1_cnt != 1) goto out; if (trace_selftest_test_probe2_cnt != 1) goto out; if (trace_selftest_test_probe3_cnt != 2) goto out; /* */ dyn_ops = kzalloc(sizeof(*dyn_ops), GFP_KERNEL); if (!dyn_ops) { printk("MEMORY ERROR "); goto out; } dyn_ops->func = trace_selftest_test_dyn_func; register_ftrace_function(dyn_ops); trace_selftest_test_global_cnt = 0; DYN_FTRACE_TEST_NAME(); print_counts(); if (trace_selftest_test_probe1_cnt != 2) goto out_free; if (trace_selftest_test_probe2_cnt != 1) goto out_free; if (trace_selftest_test_probe3_cnt != 3) goto out_free; if (trace_selftest_test_global_cnt == 0) goto out; if (trace_selftest_test_dyn_cnt == 0) goto out_free; DYN_FTRACE_TEST_NAME2(); print_counts(); if (trace_selftest_test_probe1_cnt != 2) goto out_free; if (trace_selftest_test_probe2_cnt != 2) goto out_free; if (trace_selftest_test_probe3_cnt != 4) goto out_free; ret = 0; out_free: unregister_ftrace_function(dyn_ops); kfree(dyn_ops); out: /* */ unregister_ftrace_function(&test_probe1); unregister_ftrace_function(&test_probe2); unregister_ftrace_function(&test_probe3); unregister_ftrace_function(&test_global); /* */ reset_counts(); DYN_FTRACE_TEST_NAME(); DYN_FTRACE_TEST_NAME(); if (trace_selftest_test_probe1_cnt || trace_selftest_test_probe2_cnt || trace_selftest_test_probe3_cnt || trace_selftest_test_global_cnt || trace_selftest_test_dyn_cnt) ret = -1; ftrace_enabled = save_ftrace_enabled; return ret; }