Lines Matching defs:events
29 static int do_count_loop(struct event *events, u64 instructions,
42 event_read(&events[0]);
43 event_read(&events[1]);
46 difference = events[0].result.value - expected;
47 percentage = (double)difference / events[0].result.value * 100;
50 event_report(&events[0]);
51 event_report(&events[1]);
55 printf("Actual %llu\n", events[0].result.value);
59 event_reset(&events[0]);
60 event_reset(&events[1]);
67 if (difference / events[0].result.value)
74 static u64 determine_overhead(struct event *events)
79 do_count_loop(events, 0, 0, false);
80 overhead = events[0].result.value;
83 do_count_loop(events, 0, 0, false);
84 current = events[0].result.value;
96 struct event events[2];
99 setup_event(&events[0], PERF_COUNT_HW_INSTRUCTIONS, "instructions");
100 setup_event(&events[1], PERF_COUNT_HW_CPU_CYCLES, "cycles");
102 if (event_open(&events[0])) {
107 if (event_open_with_group(&events[1], events[0].fd)) {
112 overhead = determine_overhead(events);
116 FAIL_IF(do_count_loop(events, 1000000, overhead, true));
119 FAIL_IF(do_count_loop(events, 10000000, overhead, true));
122 FAIL_IF(do_count_loop(events, 100000000, overhead, true));
125 FAIL_IF(do_count_loop(events, 1000000000, overhead, true));
128 FAIL_IF(do_count_loop(events, 16000000000, overhead, true));
131 FAIL_IF(do_count_loop(events, 64000000000, overhead, true));
133 event_close(&events[0]);
134 event_close(&events[1]);
