| #include <linux/err.h> |
| #include "perf.h" |
| #include "evlist.h" |
| #include "evsel.h" |
| #include "thread_map.h" |
| #include "tests.h" |
| #include "debug.h" |
| |
| int test__syscall_openat_tp_fields(int subtest __maybe_unused) |
| { |
| struct record_opts opts = { |
| .target = { |
| .uid = UINT_MAX, |
| .uses_mmap = true, |
| }, |
| .no_buffering = true, |
| .freq = 1, |
| .mmap_pages = 256, |
| .raw_samples = true, |
| }; |
| const char *filename = "/etc/passwd"; |
| int flags = O_RDONLY | O_DIRECTORY; |
| struct perf_evlist *evlist = perf_evlist__new(); |
| struct perf_evsel *evsel; |
| int err = -1, i, nr_events = 0, nr_polls = 0; |
| char sbuf[STRERR_BUFSIZE]; |
| |
| if (evlist == NULL) { |
| pr_debug("%s: perf_evlist__new\n", __func__); |
| goto out; |
| } |
| |
| evsel = perf_evsel__newtp("syscalls", "sys_enter_openat"); |
| if (IS_ERR(evsel)) { |
| pr_debug("%s: perf_evsel__newtp\n", __func__); |
| goto out_delete_evlist; |
| } |
| |
| perf_evlist__add(evlist, evsel); |
| |
| err = perf_evlist__create_maps(evlist, &opts.target); |
| if (err < 0) { |
| pr_debug("%s: perf_evlist__create_maps\n", __func__); |
| goto out_delete_evlist; |
| } |
| |
| perf_evsel__config(evsel, &opts); |
| |
| thread_map__set_pid(evlist->threads, 0, getpid()); |
| |
| err = perf_evlist__open(evlist); |
| if (err < 0) { |
| pr_debug("perf_evlist__open: %s\n", |
| strerror_r(errno, sbuf, sizeof(sbuf))); |
| goto out_delete_evlist; |
| } |
| |
| err = perf_evlist__mmap(evlist, UINT_MAX, false); |
| if (err < 0) { |
| pr_debug("perf_evlist__mmap: %s\n", |
| strerror_r(errno, sbuf, sizeof(sbuf))); |
| goto out_delete_evlist; |
| } |
| |
| perf_evlist__enable(evlist); |
| |
| /* |
| * Generate the event: |
| */ |
| openat(AT_FDCWD, filename, flags); |
| |
| while (1) { |
| int before = nr_events; |
| |
| for (i = 0; i < evlist->nr_mmaps; i++) { |
| union perf_event *event; |
| |
| while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { |
| const u32 type = event->header.type; |
| int tp_flags; |
| struct perf_sample sample; |
| |
| ++nr_events; |
| |
| if (type != PERF_RECORD_SAMPLE) { |
| perf_evlist__mmap_consume(evlist, i); |
| continue; |
| } |
| |
| err = perf_evsel__parse_sample(evsel, event, &sample); |
| if (err) { |
| pr_debug("Can't parse sample, err = %d\n", err); |
| goto out_delete_evlist; |
| } |
| |
| tp_flags = perf_evsel__intval(evsel, &sample, "flags"); |
| |
| if (flags != tp_flags) { |
| pr_debug("%s: Expected flags=%#x, got %#x\n", |
| __func__, flags, tp_flags); |
| goto out_delete_evlist; |
| } |
| |
| goto out_ok; |
| } |
| } |
| |
| if (nr_events == before) |
| perf_evlist__poll(evlist, 10); |
| |
| if (++nr_polls > 5) { |
| pr_debug("%s: no events!\n", __func__); |
| goto out_delete_evlist; |
| } |
| } |
| out_ok: |
| err = 0; |
| out_delete_evlist: |
| perf_evlist__delete(evlist); |
| out: |
| return err; |
| } |