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; | |
75948730 | 50 | struct perf_mmap *md; |
d723a550 NK |
51 | |
52 | signal(SIGCHLD, sig_handler); | |
d723a550 | 53 | |
b22d54b0 | 54 | evlist = perf_evlist__new_default(); |
d723a550 | 55 | if (evlist == NULL) { |
b22d54b0 | 56 | pr_debug("perf_evlist__new_default\n"); |
d723a550 NK |
57 | return -1; |
58 | } | |
d723a550 NK |
59 | |
60 | /* | |
61 | * Create maps of threads and cpus to monitor. In this case | |
62 | * we start with all threads and cpus (-1, -1) but then in | |
63 | * perf_evlist__prepare_workload we'll fill in the only thread | |
64 | * we're monitoring, the one forked there. | |
65 | */ | |
29982722 AH |
66 | cpus = cpu_map__dummy_new(); |
67 | threads = thread_map__new_by_tid(-1); | |
68 | if (!cpus || !threads) { | |
d723a550 NK |
69 | err = -ENOMEM; |
70 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
29982722 | 71 | goto out_free_maps; |
d723a550 NK |
72 | } |
73 | ||
29982722 AH |
74 | perf_evlist__set_maps(evlist, cpus, threads); |
75 | ||
76 | cpus = NULL; | |
77 | threads = NULL; | |
78 | ||
735f7e0b ACM |
79 | err = perf_evlist__prepare_workload(evlist, &target, argv, false, |
80 | workload_exec_failed_signal); | |
d723a550 NK |
81 | if (err < 0) { |
82 | pr_debug("Couldn't run the workload!\n"); | |
03ad9747 | 83 | goto out_delete_evlist; |
d723a550 NK |
84 | } |
85 | ||
86 | evsel = perf_evlist__first(evlist); | |
87 | evsel->attr.task = 1; | |
99654849 TR |
88 | #ifdef __s390x__ |
89 | evsel->attr.sample_freq = 1000000; | |
90 | #else | |
7a1ac110 | 91 | evsel->attr.sample_freq = 1; |
99654849 | 92 | #endif |
d723a550 NK |
93 | evsel->attr.inherit = 0; |
94 | evsel->attr.watermark = 0; | |
95 | evsel->attr.wakeup_events = 1; | |
96 | evsel->attr.exclude_kernel = 1; | |
97 | ||
98 | err = perf_evlist__open(evlist); | |
99 | if (err < 0) { | |
ba3dfff8 | 100 | pr_debug("Couldn't open the evlist: %s\n", |
c8b5f2c9 | 101 | str_error_r(-err, sbuf, sizeof(sbuf))); |
03ad9747 | 102 | goto out_delete_evlist; |
d723a550 NK |
103 | } |
104 | ||
f74b9d3a | 105 | if (perf_evlist__mmap(evlist, 128) < 0) { |
d723a550 | 106 | pr_debug("failed to mmap events: %d (%s)\n", errno, |
c8b5f2c9 | 107 | str_error_r(errno, sbuf, sizeof(sbuf))); |
f26e1c7c | 108 | goto out_delete_evlist; |
d723a550 NK |
109 | } |
110 | ||
111 | perf_evlist__start_workload(evlist); | |
112 | ||
113 | retry: | |
75948730 | 114 | md = &evlist->mmap[0]; |
b9bae2c8 | 115 | if (perf_mmap__read_init(md) < 0) |
75948730 KL |
116 | goto out_init; |
117 | ||
0019dc87 | 118 | while ((event = perf_mmap__read_event(md)) != NULL) { |
8e50d384 ZZ |
119 | if (event->header.type == PERF_RECORD_EXIT) |
120 | nr_exit++; | |
d723a550 | 121 | |
d6ace3df | 122 | perf_mmap__consume(md); |
d723a550 | 123 | } |
75948730 | 124 | perf_mmap__read_done(md); |
d723a550 | 125 | |
75948730 | 126 | out_init: |
d723a550 | 127 | if (!exited || !nr_exit) { |
f66a889d | 128 | perf_evlist__poll(evlist, -1); |
d723a550 NK |
129 | goto retry; |
130 | } | |
131 | ||
132 | if (nr_exit != 1) { | |
133 | pr_debug("received %d EXIT records\n", nr_exit); | |
134 | err = -1; | |
135 | } | |
136 | ||
29982722 AH |
137 | out_free_maps: |
138 | cpu_map__put(cpus); | |
139 | thread_map__put(threads); | |
03ad9747 | 140 | out_delete_evlist: |
d723a550 NK |
141 | perf_evlist__delete(evlist); |
142 | return err; | |
143 | } |