1 #include "perf.h" 2 #include "evlist.h" 3 #include "evsel.h" 4 #include "thread_map.h" 5 #include "tests.h" 6 7 int test__syscall_open_tp_fields(void) 8 { 9 struct perf_record_opts opts = { 10 .target = { 11 .uid = UINT_MAX, 12 .uses_mmap = true, 13 }, 14 .no_delay = true, 15 .freq = 1, 16 .mmap_pages = 256, 17 .raw_samples = true, 18 }; 19 const char *filename = "/etc/passwd"; 20 int flags = O_RDONLY | O_DIRECTORY; 21 struct perf_evlist *evlist = perf_evlist__new(); 22 struct perf_evsel *evsel; 23 int err = -1, i, nr_events = 0, nr_polls = 0; 24 25 if (evlist == NULL) { 26 pr_debug("%s: perf_evlist__new\n", __func__); 27 goto out; 28 } 29 30 evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0); 31 if (evsel == NULL) { 32 pr_debug("%s: perf_evsel__newtp\n", __func__); 33 goto out_delete_evlist; 34 } 35 36 perf_evlist__add(evlist, evsel); 37 38 err = perf_evlist__create_maps(evlist, &opts.target); 39 if (err < 0) { 40 pr_debug("%s: perf_evlist__create_maps\n", __func__); 41 goto out_delete_evlist; 42 } 43 44 perf_evsel__config(evsel, &opts); 45 46 evlist->threads->map[0] = getpid(); 47 48 err = perf_evlist__open(evlist); 49 if (err < 0) { 50 pr_debug("perf_evlist__open: %s\n", strerror(errno)); 51 goto out_delete_maps; 52 } 53 54 err = perf_evlist__mmap(evlist, UINT_MAX, false); 55 if (err < 0) { 56 pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); 57 goto out_close_evlist; 58 } 59 60 perf_evlist__enable(evlist); 61 62 /* 63 * Generate the event: 64 */ 65 open(filename, flags); 66 67 while (1) { 68 int before = nr_events; 69 70 for (i = 0; i < evlist->nr_mmaps; i++) { 71 union perf_event *event; 72 73 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { 74 const u32 type = event->header.type; 75 int tp_flags; 76 struct perf_sample sample; 77 78 ++nr_events; 79 80 if (type != PERF_RECORD_SAMPLE) { 81 perf_evlist__mmap_consume(evlist, i); 82 continue; 83 } 84 85 err = perf_evsel__parse_sample(evsel, event, &sample); 86 if (err) { 87 pr_err("Can't parse sample, err = %d\n", err); 88 goto out_munmap; 89 } 90 91 tp_flags = perf_evsel__intval(evsel, &sample, "flags"); 92 93 if (flags != tp_flags) { 94 pr_debug("%s: Expected flags=%#x, got %#x\n", 95 __func__, flags, tp_flags); 96 goto out_munmap; 97 } 98 99 goto out_ok; 100 } 101 } 102 103 if (nr_events == before) 104 poll(evlist->pollfd, evlist->nr_fds, 10); 105 106 if (++nr_polls > 5) { 107 pr_debug("%s: no events!\n", __func__); 108 goto out_munmap; 109 } 110 } 111 out_ok: 112 err = 0; 113 out_munmap: 114 perf_evlist__munmap(evlist); 115 out_close_evlist: 116 perf_evlist__close(evlist); 117 out_delete_maps: 118 perf_evlist__delete_maps(evlist); 119 out_delete_evlist: 120 perf_evlist__delete(evlist); 121 out: 122 return err; 123 } 124
