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Jiri Olsa
authored and
Arnaldo Carvalho de Melo
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Nov 14, 2012
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--- | ||
refs/heads/master: 5e24a0904ed4029f6778a214b6fe41b9265fd620 | ||
refs/heads/master: dc447eed59037c1c65feab9c72d372b6249af978 |
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#include "perf.h" | ||
#include "evlist.h" | ||
#include "evsel.h" | ||
#include "thread_map.h" | ||
#include "tests.h" | ||
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int test__syscall_open_tp_fields(void) | ||
{ | ||
struct perf_record_opts opts = { | ||
.target = { | ||
.uid = UINT_MAX, | ||
.uses_mmap = true, | ||
}, | ||
.no_delay = 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(NULL, NULL); | ||
struct perf_evsel *evsel; | ||
int err = -1, i, nr_events = 0, nr_polls = 0; | ||
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if (evlist == NULL) { | ||
pr_debug("%s: perf_evlist__new\n", __func__); | ||
goto out; | ||
} | ||
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evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0); | ||
if (evsel == NULL) { | ||
pr_debug("%s: perf_evsel__newtp\n", __func__); | ||
goto out_delete_evlist; | ||
} | ||
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perf_evlist__add(evlist, evsel); | ||
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err = perf_evlist__create_maps(evlist, &opts.target); | ||
if (err < 0) { | ||
pr_debug("%s: perf_evlist__create_maps\n", __func__); | ||
goto out_delete_evlist; | ||
} | ||
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perf_evsel__config(evsel, &opts, evsel); | ||
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evlist->threads->map[0] = getpid(); | ||
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err = perf_evlist__open(evlist); | ||
if (err < 0) { | ||
pr_debug("perf_evlist__open: %s\n", strerror(errno)); | ||
goto out_delete_evlist; | ||
} | ||
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err = perf_evlist__mmap(evlist, UINT_MAX, false); | ||
if (err < 0) { | ||
pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); | ||
goto out_delete_evlist; | ||
} | ||
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perf_evlist__enable(evlist); | ||
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/* | ||
* Generate the event: | ||
*/ | ||
open(filename, flags); | ||
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while (1) { | ||
int before = nr_events; | ||
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for (i = 0; i < evlist->nr_mmaps; i++) { | ||
union perf_event *event; | ||
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while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { | ||
const u32 type = event->header.type; | ||
int tp_flags; | ||
struct perf_sample sample; | ||
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++nr_events; | ||
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if (type != PERF_RECORD_SAMPLE) | ||
continue; | ||
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err = perf_evsel__parse_sample(evsel, event, &sample); | ||
if (err) { | ||
pr_err("Can't parse sample, err = %d\n", err); | ||
goto out_munmap; | ||
} | ||
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tp_flags = perf_evsel__intval(evsel, &sample, "flags"); | ||
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if (flags != tp_flags) { | ||
pr_debug("%s: Expected flags=%#x, got %#x\n", | ||
__func__, flags, tp_flags); | ||
goto out_munmap; | ||
} | ||
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goto out_ok; | ||
} | ||
} | ||
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if (nr_events == before) | ||
poll(evlist->pollfd, evlist->nr_fds, 10); | ||
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if (++nr_polls > 5) { | ||
pr_debug("%s: no events!\n", __func__); | ||
goto out_munmap; | ||
} | ||
} | ||
out_ok: | ||
err = 0; | ||
out_munmap: | ||
perf_evlist__munmap(evlist); | ||
out_delete_evlist: | ||
perf_evlist__delete(evlist); | ||
out: | ||
return err; | ||
} |
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