Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
d723a550 NK |
2 | #include "evlist.h" |
3 | #include "evsel.h" | |
4 | #include "thread_map.h" | |
5 | #include "cpumap.h" | |
6 | #include "tests.h" | |
7 | ||
a43783ae | 8 | #include <errno.h> |
d723a550 NK |
9 | #include <signal.h> |
10 | ||
11 | static int exited; | |
12 | static int nr_exit; | |
13 | ||
735f7e0b | 14 | static void sig_handler(int sig __maybe_unused) |
d723a550 NK |
15 | { |
16 | exited = 1; | |
735f7e0b | 17 | } |
d723a550 | 18 | |
735f7e0b ACM |
19 | /* |
20 | * perf_evlist__prepare_workload will send a SIGUSR1 if the fork fails, since | |
21 | * we asked by setting its exec_error to this handler. | |
22 | */ | |
23 | static void workload_exec_failed_signal(int signo __maybe_unused, | |
24 | siginfo_t *info __maybe_unused, | |
25 | void *ucontext __maybe_unused) | |
26 | { | |
27 | exited = 1; | |
28 | nr_exit = -1; | |
d723a550 NK |
29 | } |
30 | ||
31 | /* | |
32 | * This test will start a workload that does nothing then it checks | |
33 | * if the number of exit event reported by the kernel is 1 or not | |
34 | * in order to check the kernel returns correct number of event. | |
35 | */ | |
81f17c90 | 36 | int test__task_exit(struct test *test __maybe_unused, int subtest __maybe_unused) |
d723a550 NK |
37 | { |
38 | int err = -1; | |
39 | union perf_event *event; | |
40 | struct perf_evsel *evsel; | |
41 | struct perf_evlist *evlist; | |
602ad878 | 42 | struct target target = { |
d723a550 NK |
43 | .uid = UINT_MAX, |
44 | .uses_mmap = true, | |
45 | }; | |
46 | const char *argv[] = { "true", NULL }; | |
ba3dfff8 | 47 | char sbuf[STRERR_BUFSIZE]; |
29982722 AH |
48 | struct cpu_map *cpus; |
49 | struct thread_map *threads; | |
d723a550 NK |
50 | |
51 | signal(SIGCHLD, sig_handler); | |
d723a550 | 52 | |
b22d54b0 | 53 | evlist = perf_evlist__new_default(); |
d723a550 | 54 | if (evlist == NULL) { |
b22d54b0 | 55 | pr_debug("perf_evlist__new_default\n"); |
d723a550 NK |
56 | return -1; |
57 | } | |
d723a550 NK |
58 | |
59 | /* | |
60 | * Create maps of threads and cpus to monitor. In this case | |
61 | * we start with all threads and cpus (-1, -1) but then in | |
62 | * perf_evlist__prepare_workload we'll fill in the only thread | |
63 | * we're monitoring, the one forked there. | |
64 | */ | |
29982722 AH |
65 | cpus = cpu_map__dummy_new(); |
66 | threads = thread_map__new_by_tid(-1); | |
67 | if (!cpus || !threads) { | |
d723a550 NK |
68 | err = -ENOMEM; |
69 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
29982722 | 70 | goto out_free_maps; |
d723a550 NK |
71 | } |
72 | ||
29982722 AH |
73 | perf_evlist__set_maps(evlist, cpus, threads); |
74 | ||
75 | cpus = NULL; | |
76 | threads = NULL; | |
77 | ||
735f7e0b ACM |
78 | err = perf_evlist__prepare_workload(evlist, &target, argv, false, |
79 | workload_exec_failed_signal); | |
d723a550 NK |
80 | if (err < 0) { |
81 | pr_debug("Couldn't run the workload!\n"); | |
03ad9747 | 82 | goto out_delete_evlist; |
d723a550 NK |
83 | } |
84 | ||
85 | evsel = perf_evlist__first(evlist); | |
86 | evsel->attr.task = 1; | |
99654849 TR |
87 | #ifdef __s390x__ |
88 | evsel->attr.sample_freq = 1000000; | |
89 | #else | |
7a1ac110 | 90 | evsel->attr.sample_freq = 1; |
99654849 | 91 | #endif |
d723a550 NK |
92 | evsel->attr.inherit = 0; |
93 | evsel->attr.watermark = 0; | |
94 | evsel->attr.wakeup_events = 1; | |
95 | evsel->attr.exclude_kernel = 1; | |
96 | ||
97 | err = perf_evlist__open(evlist); | |
98 | if (err < 0) { | |
ba3dfff8 | 99 | pr_debug("Couldn't open the evlist: %s\n", |
c8b5f2c9 | 100 | str_error_r(-err, sbuf, sizeof(sbuf))); |
03ad9747 | 101 | goto out_delete_evlist; |
d723a550 NK |
102 | } |
103 | ||
a0e3dd79 | 104 | if (perf_evlist__mmap(evlist, 128, false) < 0) { |
d723a550 | 105 | pr_debug("failed to mmap events: %d (%s)\n", errno, |
c8b5f2c9 | 106 | str_error_r(errno, sbuf, sizeof(sbuf))); |
f26e1c7c | 107 | goto out_delete_evlist; |
d723a550 NK |
108 | } |
109 | ||
110 | perf_evlist__start_workload(evlist); | |
111 | ||
112 | retry: | |
113 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { | |
8e50d384 ZZ |
114 | if (event->header.type == PERF_RECORD_EXIT) |
115 | nr_exit++; | |
d723a550 | 116 | |
8e50d384 | 117 | perf_evlist__mmap_consume(evlist, 0); |
d723a550 NK |
118 | } |
119 | ||
120 | if (!exited || !nr_exit) { | |
f66a889d | 121 | perf_evlist__poll(evlist, -1); |
d723a550 NK |
122 | goto retry; |
123 | } | |
124 | ||
125 | if (nr_exit != 1) { | |
126 | pr_debug("received %d EXIT records\n", nr_exit); | |
127 | err = -1; | |
128 | } | |
129 | ||
29982722 AH |
130 | out_free_maps: |
131 | cpu_map__put(cpus); | |
132 | thread_map__put(threads); | |
03ad9747 | 133 | out_delete_evlist: |
d723a550 NK |
134 | perf_evlist__delete(evlist); |
135 | return err; | |
136 | } |