29 static int do_count_loop(struct event *events, u64 instructions,  in do_count_loop()  argument
43 	event_read(&events[0]);  in do_count_loop()
44 	event_read(&events[1]);  in do_count_loop()
45 	event_read(&events[2]);  in do_count_loop()
47 	expected = instructions + overhead + (events[2].result.value * 10);  in do_count_loop()
48 	difference = events[0].result.value - expected;  in do_count_loop()
49 	percentage = (double)difference / events[0].result.value * 100;  in do_count_loop()
53 		event_report(&events[0]);  in do_count_loop()
54 		event_report(&events[1]);  in do_count_loop()
55 		event_report(&events[2]);  in do_count_loop()
59 		printf("Actual   %llu\n", events[0].result.value);  in do_count_loop()
63 	event_reset(&events[0]);  in do_count_loop()
64 	event_reset(&events[1]);  in do_count_loop()
65 	event_reset(&events[2]);  in do_count_loop()
72 	if (difference / events[0].result.value)  in do_count_loop()
79 static u64 determine_overhead(struct event *events)  in determine_overhead()  argument
84 	do_count_loop(events, 0, 0, false);  in determine_overhead()
85 	overhead = events[0].result.value;  in determine_overhead()
88 		do_count_loop(events, 0, 0, false);  in determine_overhead()
89 		current = events[0].result.value;  in determine_overhead()
104 	struct event events[3];  in test_body()  local
110 	setup_event(&events[0], PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions");  in test_body()
111 	setup_event(&events[1], PERF_COUNT_HW_CPU_CYCLES, PERF_TYPE_HARDWARE, "cycles");  in test_body()
112 	setup_event(&events[2], PM_STCX_FAIL, PERF_TYPE_RAW, "stcx_fail");  in test_body()
114 	if (event_open(&events[0])) {  in test_body()
119 	if (event_open_with_group(&events[1], events[0].fd)) {  in test_body()
124 	if (event_open_with_group(&events[2], events[0].fd)) {  in test_body()
129 	overhead = determine_overhead(events);  in test_body()
133 	FAIL_IF(do_count_loop(events, 1000000, overhead, true));  in test_body()
136 	FAIL_IF(do_count_loop(events, 10000000, overhead, true));  in test_body()
139 	FAIL_IF(do_count_loop(events, 100000000, overhead, true));  in test_body()
142 	FAIL_IF(do_count_loop(events, 1000000000, overhead, true));  in test_body()
145 	FAIL_IF(do_count_loop(events, 16000000000, overhead, true));  in test_body()
148 	FAIL_IF(do_count_loop(events, 64000000000, overhead, true));  in test_body()
150 	event_close(&events[0]);  in test_body()
151 	event_close(&events[1]);  in test_body()