libperf: Add perf_evlist__poll() function

Move perf_evlist__poll() from tools/perf to libperf, it will be used in
the following patches.

And rename the existing perf's function to evlist__poll().

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lore.kernel.org/lkml/20190913132355.21634-39-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-08-31 22:48:33 +02:00 committed by Arnaldo Carvalho de Melo
parent f4009e7bf7
commit 80ab2987a0
12 changed files with 19 additions and 12 deletions

View File

@ -1615,7 +1615,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
if (hits == rec->samples) {
if (done || draining)
break;
err = perf_evlist__poll(rec->evlist, -1);
err = evlist__poll(rec->evlist, -1);
/*
* Propagate error, only if there's any. Ignore positive
* number of returned events and interrupt error.

View File

@ -1307,7 +1307,7 @@ static int __cmd_top(struct perf_top *top)
}
/* Wait for a minimal set of events before starting the snapshot */
perf_evlist__poll(top->evlist, 100);
evlist__poll(top->evlist, 100);
perf_top__mmap_read(top);
@ -1317,7 +1317,7 @@ static int __cmd_top(struct perf_top *top)
perf_top__mmap_read(top);
if (opts->overwrite || (hits == top->samples))
ret = perf_evlist__poll(top->evlist, 100);
ret = evlist__poll(top->evlist, 100);
if (resize) {
perf_top__resize(top);

View File

@ -3474,7 +3474,7 @@ again:
if (trace->nr_events == before) {
int timeout = done ? 100 : -1;
if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
if (!draining && evlist__poll(evlist, timeout) > 0) {
if (evlist__filter_pollfd(evlist, POLLERR | POLLHUP | POLLNVAL) == 0)
draining = true;

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@ -276,3 +276,8 @@ int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
return pos;
}
int perf_evlist__poll(struct perf_evlist *evlist, int timeout)
{
return fdarray__poll(&evlist->pollfd, timeout);
}

View File

@ -31,5 +31,6 @@ LIBPERF_API void perf_evlist__disable(struct perf_evlist *evlist);
LIBPERF_API void perf_evlist__set_maps(struct perf_evlist *evlist,
struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
LIBPERF_API int perf_evlist__poll(struct perf_evlist *evlist, int timeout);
#endif /* __LIBPERF_EVLIST_H */

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@ -39,6 +39,7 @@ LIBPERF_0.0.1 {
perf_evlist__remove;
perf_evlist__next;
perf_evlist__set_maps;
perf_evlist__poll;
local:
*;
};

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@ -127,7 +127,7 @@ int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest
}
if (nr_events == before)
perf_evlist__poll(evlist, 10);
evlist__poll(evlist, 10);
if (++nr_polls > 5) {
pr_debug("%s: no events!\n", __func__);

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@ -287,7 +287,7 @@ int test__PERF_RECORD(struct test *test __maybe_unused, int subtest __maybe_unus
* perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does.
*/
if (total_events == before && false)
perf_evlist__poll(evlist, -1);
evlist__poll(evlist, -1);
sleep(1);
if (++wakeups > 5) {

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@ -130,7 +130,7 @@ retry:
out_init:
if (!exited || !nr_exit) {
perf_evlist__poll(evlist, -1);
evlist__poll(evlist, -1);
goto retry;
}

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@ -418,9 +418,9 @@ int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask)
perf_evlist__munmap_filtered, NULL);
}
int perf_evlist__poll(struct evlist *evlist, int timeout)
int evlist__poll(struct evlist *evlist, int timeout)
{
return fdarray__poll(&evlist->core.pollfd, timeout);
return perf_evlist__poll(&evlist->core, timeout);
}
static void perf_evlist__set_sid_idx(struct evlist *evlist,
@ -1736,7 +1736,7 @@ static void *perf_evlist__poll_thread(void *arg)
draining = true;
if (!draining)
perf_evlist__poll(evlist, 1000);
evlist__poll(evlist, 1000);
for (i = 0; i < evlist->core.nr_mmaps; i++) {
struct mmap *map = &evlist->mmap[i];

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@ -144,7 +144,7 @@ perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
int evlist__add_pollfd(struct evlist *evlist, int fd);
int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
int perf_evlist__poll(struct evlist *evlist, int timeout);
int evlist__poll(struct evlist *evlist, int timeout);
struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id);
struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,

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@ -918,7 +918,7 @@ static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
return NULL;
n = perf_evlist__poll(evlist, timeout);
n = evlist__poll(evlist, timeout);
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;