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5
6#include <signal.h>
7#include <stdio.h>
8#include <stdlib.h>
9#include <stdbool.h>
10#include <sys/types.h>
11#include <sys/wait.h>
12#include <unistd.h>
13
14#include "ebb.h"
15
16
17
18
19
20
21
22static int setup_cpu_event(struct event *event, int cpu)
23{
24 event_init_named(event, 0x400FA, "PM_RUN_INST_CMPL");
25
26 event->attr.exclude_kernel = 1;
27 event->attr.exclude_hv = 1;
28 event->attr.exclude_idle = 1;
29
30 SKIP_IF(require_paranoia_below(1));
31 FAIL_IF(event_open_with_cpu(event, cpu));
32 FAIL_IF(event_enable(event));
33
34 return 0;
35}
36
37int ebb_vs_cpu_event(void)
38{
39 union pipe read_pipe, write_pipe;
40 struct event event;
41 int cpu, rc;
42 pid_t pid;
43
44 SKIP_IF(!ebb_is_supported());
45
46 cpu = pick_online_cpu();
47 FAIL_IF(cpu < 0);
48 FAIL_IF(bind_to_cpu(cpu));
49
50 FAIL_IF(pipe(read_pipe.fds) == -1);
51 FAIL_IF(pipe(write_pipe.fds) == -1);
52
53 pid = fork();
54 if (pid == 0) {
55
56 exit(ebb_child(write_pipe, read_pipe));
57 }
58
59
60 FAIL_IF(sync_with_child(read_pipe, write_pipe));
61
62
63 rc = setup_cpu_event(&event, cpu);
64 if (rc) {
65 kill_child_and_wait(pid);
66 return rc;
67 }
68
69
70 FAIL_IF(sync_with_child(read_pipe, write_pipe));
71
72
73 FAIL_IF(wait_for_child(pid));
74 FAIL_IF(event_disable(&event));
75 FAIL_IF(event_read(&event));
76
77 event_report(&event);
78
79
80 FAIL_IF(event.result.enabled >= event.result.running);
81
82 return 0;
83}
84
85int main(void)
86{
87 return test_harness(ebb_vs_cpu_event, "ebb_vs_cpu_event");
88}
89