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Commit | Line | Data |
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d723a550 NK |
1 | #include "evlist.h" |
2 | #include "evsel.h" | |
3 | #include "thread_map.h" | |
4 | #include "cpumap.h" | |
5 | #include "tests.h" | |
6 | ||
a43783ae | 7 | #include <errno.h> |
d723a550 NK |
8 | #include <signal.h> |
9 | ||
10 | static int exited; | |
11 | static int nr_exit; | |
12 | ||
735f7e0b | 13 | static void sig_handler(int sig __maybe_unused) |
d723a550 NK |
14 | { |
15 | exited = 1; | |
735f7e0b | 16 | } |
d723a550 | 17 | |
735f7e0b ACM |
18 | /* |
19 | * perf_evlist__prepare_workload will send a SIGUSR1 if the fork fails, since | |
20 | * we asked by setting its exec_error to this handler. | |
21 | */ | |
22 | static void workload_exec_failed_signal(int signo __maybe_unused, | |
23 | siginfo_t *info __maybe_unused, | |
24 | void *ucontext __maybe_unused) | |
25 | { | |
26 | exited = 1; | |
27 | nr_exit = -1; | |
d723a550 NK |
28 | } |
29 | ||
30 | /* | |
31 | * This test will start a workload that does nothing then it checks | |
32 | * if the number of exit event reported by the kernel is 1 or not | |
33 | * in order to check the kernel returns correct number of event. | |
34 | */ | |
721a1f53 | 35 | int test__task_exit(int subtest __maybe_unused) |
d723a550 NK |
36 | { |
37 | int err = -1; | |
38 | union perf_event *event; | |
39 | struct perf_evsel *evsel; | |
40 | struct perf_evlist *evlist; | |
602ad878 | 41 | struct target target = { |
d723a550 NK |
42 | .uid = UINT_MAX, |
43 | .uses_mmap = true, | |
44 | }; | |
45 | const char *argv[] = { "true", NULL }; | |
ba3dfff8 | 46 | char sbuf[STRERR_BUFSIZE]; |
29982722 AH |
47 | struct cpu_map *cpus; |
48 | struct thread_map *threads; | |
d723a550 NK |
49 | |
50 | signal(SIGCHLD, sig_handler); | |
d723a550 | 51 | |
b22d54b0 | 52 | evlist = perf_evlist__new_default(); |
d723a550 | 53 | if (evlist == NULL) { |
b22d54b0 | 54 | pr_debug("perf_evlist__new_default\n"); |
d723a550 NK |
55 | return -1; |
56 | } | |
d723a550 NK |
57 | |
58 | /* | |
59 | * Create maps of threads and cpus to monitor. In this case | |
60 | * we start with all threads and cpus (-1, -1) but then in | |
61 | * perf_evlist__prepare_workload we'll fill in the only thread | |
62 | * we're monitoring, the one forked there. | |
63 | */ | |
29982722 AH |
64 | cpus = cpu_map__dummy_new(); |
65 | threads = thread_map__new_by_tid(-1); | |
66 | if (!cpus || !threads) { | |
d723a550 NK |
67 | err = -ENOMEM; |
68 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
29982722 | 69 | goto out_free_maps; |
d723a550 NK |
70 | } |
71 | ||
29982722 AH |
72 | perf_evlist__set_maps(evlist, cpus, threads); |
73 | ||
74 | cpus = NULL; | |
75 | threads = NULL; | |
76 | ||
735f7e0b ACM |
77 | err = perf_evlist__prepare_workload(evlist, &target, argv, false, |
78 | workload_exec_failed_signal); | |
d723a550 NK |
79 | if (err < 0) { |
80 | pr_debug("Couldn't run the workload!\n"); | |
03ad9747 | 81 | goto out_delete_evlist; |
d723a550 NK |
82 | } |
83 | ||
84 | evsel = perf_evlist__first(evlist); | |
85 | evsel->attr.task = 1; | |
7a1ac110 | 86 | evsel->attr.sample_freq = 1; |
d723a550 NK |
87 | evsel->attr.inherit = 0; |
88 | evsel->attr.watermark = 0; | |
89 | evsel->attr.wakeup_events = 1; | |
90 | evsel->attr.exclude_kernel = 1; | |
91 | ||
92 | err = perf_evlist__open(evlist); | |
93 | if (err < 0) { | |
ba3dfff8 | 94 | pr_debug("Couldn't open the evlist: %s\n", |
c8b5f2c9 | 95 | str_error_r(-err, sbuf, sizeof(sbuf))); |
03ad9747 | 96 | goto out_delete_evlist; |
d723a550 NK |
97 | } |
98 | ||
99 | if (perf_evlist__mmap(evlist, 128, true) < 0) { | |
100 | pr_debug("failed to mmap events: %d (%s)\n", errno, | |
c8b5f2c9 | 101 | str_error_r(errno, sbuf, sizeof(sbuf))); |
f26e1c7c | 102 | goto out_delete_evlist; |
d723a550 NK |
103 | } |
104 | ||
105 | perf_evlist__start_workload(evlist); | |
106 | ||
107 | retry: | |
108 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { | |
8e50d384 ZZ |
109 | if (event->header.type == PERF_RECORD_EXIT) |
110 | nr_exit++; | |
d723a550 | 111 | |
8e50d384 | 112 | perf_evlist__mmap_consume(evlist, 0); |
d723a550 NK |
113 | } |
114 | ||
115 | if (!exited || !nr_exit) { | |
f66a889d | 116 | perf_evlist__poll(evlist, -1); |
d723a550 NK |
117 | goto retry; |
118 | } | |
119 | ||
120 | if (nr_exit != 1) { | |
121 | pr_debug("received %d EXIT records\n", nr_exit); | |
122 | err = -1; | |
123 | } | |
124 | ||
29982722 AH |
125 | out_free_maps: |
126 | cpu_map__put(cpus); | |
127 | thread_map__put(threads); | |
03ad9747 | 128 | out_delete_evlist: |
d723a550 NK |
129 | perf_evlist__delete(evlist); |
130 | return err; | |
131 | } |