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721a1f53df
Some tests have sub-tests we want to run, so allow passing this.
Wang tried to avoid having to touch all tests, but then, having the
test.func in an anonymous union makes the build fail on older compilers,
like the one in RHEL6, where:
test a = {
.func = foo,
};
fails.
To fix it leave the func pointer in the main structure and pass the subtest
index to all tests, end result function is the same, but we have just one
function pointer, not two, with and without the subtest index as an argument.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-5genj0ficwdmelpoqlds0u4y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
#include <linux/err.h>
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#include "perf.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "thread_map.h"
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#include "tests.h"
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#include "debug.h"
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int test__syscall_openat_tp_fields(int subtest __maybe_unused)
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{
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struct record_opts opts = {
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.target = {
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.uid = UINT_MAX,
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.uses_mmap = true,
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},
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.no_buffering = true,
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.freq = 1,
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.mmap_pages = 256,
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.raw_samples = true,
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};
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const char *filename = "/etc/passwd";
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int flags = O_RDONLY | O_DIRECTORY;
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struct perf_evlist *evlist = perf_evlist__new();
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struct perf_evsel *evsel;
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int err = -1, i, nr_events = 0, nr_polls = 0;
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char sbuf[STRERR_BUFSIZE];
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if (evlist == NULL) {
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pr_debug("%s: perf_evlist__new\n", __func__);
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goto out;
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}
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evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
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if (IS_ERR(evsel)) {
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pr_debug("%s: perf_evsel__newtp\n", __func__);
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goto out_delete_evlist;
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}
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perf_evlist__add(evlist, evsel);
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err = perf_evlist__create_maps(evlist, &opts.target);
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if (err < 0) {
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pr_debug("%s: perf_evlist__create_maps\n", __func__);
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goto out_delete_evlist;
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}
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perf_evsel__config(evsel, &opts);
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thread_map__set_pid(evlist->threads, 0, getpid());
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err = perf_evlist__open(evlist);
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if (err < 0) {
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pr_debug("perf_evlist__open: %s\n",
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strerror_r(errno, sbuf, sizeof(sbuf)));
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goto out_delete_evlist;
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}
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err = perf_evlist__mmap(evlist, UINT_MAX, false);
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if (err < 0) {
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pr_debug("perf_evlist__mmap: %s\n",
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strerror_r(errno, sbuf, sizeof(sbuf)));
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goto out_delete_evlist;
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}
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perf_evlist__enable(evlist);
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/*
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* Generate the event:
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*/
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openat(AT_FDCWD, filename, flags);
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while (1) {
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int before = nr_events;
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for (i = 0; i < evlist->nr_mmaps; i++) {
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union perf_event *event;
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while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
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const u32 type = event->header.type;
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int tp_flags;
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struct perf_sample sample;
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++nr_events;
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if (type != PERF_RECORD_SAMPLE) {
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perf_evlist__mmap_consume(evlist, i);
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continue;
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}
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err = perf_evsel__parse_sample(evsel, event, &sample);
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if (err) {
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pr_debug("Can't parse sample, err = %d\n", err);
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goto out_delete_evlist;
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}
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tp_flags = perf_evsel__intval(evsel, &sample, "flags");
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if (flags != tp_flags) {
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pr_debug("%s: Expected flags=%#x, got %#x\n",
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__func__, flags, tp_flags);
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goto out_delete_evlist;
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}
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goto out_ok;
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}
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}
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if (nr_events == before)
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perf_evlist__poll(evlist, 10);
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if (++nr_polls > 5) {
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pr_debug("%s: no events!\n", __func__);
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goto out_delete_evlist;
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}
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}
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out_ok:
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err = 0;
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out_delete_evlist:
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perf_evlist__delete(evlist);
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out:
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return err;
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}
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