[PATCH 09/10] perf evlist: Introduce poll method for common code idiom
From: Arnaldo Carvalho de Melo
Date: Fri Aug 22 2014 - 17:00:50 EST
From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Since we have access two evlist members in all these poll calls, provide
a helper.
This will also help to make the patch introducing the pollfd class more
clear, as the evlist specific uses will be hiden away
perf_evlist__poll().
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jean Pihet <jean.pihet@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-hizx410uqouefj52jujubv2y@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-record.c | 2 +-
tools/perf/builtin-top.c | 4 ++--
tools/perf/builtin-trace.c | 2 +-
tools/perf/tests/open-syscall-tp-fields.c | 2 +-
tools/perf/tests/perf-record.c | 2 +-
tools/perf/tests/task-exit.c | 2 +-
tools/perf/util/evlist.c | 5 +++++
tools/perf/util/evlist.h | 2 ++
tools/perf/util/python.c | 2 +-
9 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index b87708ce09c9..aac86600b89e 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -459,7 +459,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
if (hits == rec->samples) {
if (done)
break;
- err = poll(rec->evlist->pollfd, rec->evlist->nr_fds, -1);
+ err = perf_evlist__poll(rec->evlist, -1);
/*
* Propagate error, only if there's any. Ignore positive
* number of returned events and interrupt error.
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 9848e270b92c..ef7c808c8ce2 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -964,7 +964,7 @@ static int __cmd_top(struct perf_top *top)
perf_evlist__enable(top->evlist);
/* Wait for a minimal set of events before starting the snapshot */
- poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
+ perf_evlist__poll(top->evlist, 100);
perf_top__mmap_read(top);
@@ -991,7 +991,7 @@ static int __cmd_top(struct perf_top *top)
perf_top__mmap_read(top);
if (hits == top->samples)
- ret = poll(top->evlist->pollfd, top->evlist->nr_fds, 100);
+ ret = perf_evlist__poll(top->evlist, 100);
}
ret = 0;
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 09d4bc44215e..970aa0297697 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2171,7 +2171,7 @@ next_event:
if (trace->nr_events == before) {
int timeout = done ? 100 : -1;
- if (poll(evlist->pollfd, evlist->nr_fds, timeout) > 0 &&
+ if (perf_evlist__poll(evlist, timeout) > 0 &&
perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) > 0)
goto again;
} else {
diff --git a/tools/perf/tests/open-syscall-tp-fields.c b/tools/perf/tests/open-syscall-tp-fields.c
index 922bdb627950..127dcae0b760 100644
--- a/tools/perf/tests/open-syscall-tp-fields.c
+++ b/tools/perf/tests/open-syscall-tp-fields.c
@@ -105,7 +105,7 @@ int test__syscall_open_tp_fields(void)
}
if (nr_events == before)
- poll(evlist->pollfd, evlist->nr_fds, 10);
+ perf_evlist__poll(evlist, 10);
if (++nr_polls > 5) {
pr_debug("%s: no events!\n", __func__);
diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 2ce753c1db63..7a228a2a070b 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -268,7 +268,7 @@ int test__PERF_RECORD(void)
* perf_event_attr.wakeup_events, just PERF_EVENT_SAMPLE does.
*/
if (total_events == before && false)
- poll(evlist->pollfd, evlist->nr_fds, -1);
+ perf_evlist__poll(evlist, -1);
sleep(1);
if (++wakeups > 5) {
diff --git a/tools/perf/tests/task-exit.c b/tools/perf/tests/task-exit.c
index 87522f01c7ad..3a8fedef83bc 100644
--- a/tools/perf/tests/task-exit.c
+++ b/tools/perf/tests/task-exit.c
@@ -105,7 +105,7 @@ retry:
}
if (!exited || !nr_exit) {
- poll(evlist->pollfd, evlist->nr_fds, -1);
+ perf_evlist__poll(evlist, -1);
goto retry;
}
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 9fb00c980312..6c44453049bb 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -470,6 +470,11 @@ int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mas
return nr_fds;
}
+int perf_evlist__poll(struct perf_evlist *evlist, int timeout)
+{
+ return poll(evlist->pollfd, evlist->nr_fds, timeout);
+}
+
static void perf_evlist__id_hash(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int cpu, int thread, u64 id)
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index bbc2fd01b5c5..d7e99b67c94f 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -87,6 +87,8 @@ int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask);
+int perf_evlist__poll(struct perf_evlist *evlist, int timeout);
+
struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 12aa9b0d0ba1..4472f8be8e35 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -736,7 +736,7 @@ static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist,
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout))
return NULL;
- n = poll(evlist->pollfd, evlist->nr_fds, timeout);
+ n = perf_evlist__poll(evlist, timeout);
if (n < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
--
1.9.3
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