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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/tests/openat-syscall-tp-fields.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/tests/openat-syscall-tp-fields.c')
-rw-r--r-- | tools/perf/tests/openat-syscall-tp-fields.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/tools/perf/tests/openat-syscall-tp-fields.c b/tools/perf/tests/openat-syscall-tp-fields.c new file mode 100644 index 000000000..1f5f5e79a --- /dev/null +++ b/tools/perf/tests/openat-syscall-tp-fields.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <stdbool.h> +#include <linux/err.h> +#include <linux/string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include "evlist.h" +#include "evsel.h" +#include "thread_map.h" +#include "record.h" +#include "tests.h" +#include "debug.h" +#include "util/mmap.h" +#include <errno.h> +#include <perf/mmap.h> + +#ifndef O_DIRECTORY +#define O_DIRECTORY 00200000 +#endif +#ifndef AT_FDCWD +#define AT_FDCWD -100 +#endif + +int test__syscall_openat_tp_fields(struct test *test __maybe_unused, 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 evlist *evlist = evlist__new(); + struct 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 = evsel__newtp("syscalls", "sys_enter_openat"); + if (IS_ERR(evsel)) { + pr_debug("%s: evsel__newtp\n", __func__); + goto out_delete_evlist; + } + + 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; + } + + evsel__config(evsel, &opts, NULL); + + perf_thread_map__set_pid(evlist->core.threads, 0, getpid()); + + err = evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + err = evlist__mmap(evlist, UINT_MAX); + if (err < 0) { + pr_debug("evlist__mmap: %s\n", + str_error_r(errno, sbuf, sizeof(sbuf))); + goto out_delete_evlist; + } + + evlist__enable(evlist); + + /* + * Generate the event: + */ + openat(AT_FDCWD, filename, flags); + + while (1) { + int before = nr_events; + + for (i = 0; i < evlist->core.nr_mmaps; i++) { + union perf_event *event; + struct mmap *md; + + md = &evlist->mmap[i]; + if (perf_mmap__read_init(&md->core) < 0) + continue; + + while ((event = perf_mmap__read_event(&md->core)) != NULL) { + const u32 type = event->header.type; + int tp_flags; + struct perf_sample sample; + + ++nr_events; + + if (type != PERF_RECORD_SAMPLE) { + perf_mmap__consume(&md->core); + continue; + } + + err = evsel__parse_sample(evsel, event, &sample); + if (err) { + pr_debug("Can't parse sample, err = %d\n", err); + goto out_delete_evlist; + } + + tp_flags = 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; + } + perf_mmap__read_done(&md->core); + } + + if (nr_events == before) + 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: + evlist__delete(evlist); +out: + return err; +} |