[PATCH 63/79] libperf: Add perf_evsel__close function

[Jiri Olsa]

Adding perf_evsel__close function into libperf
and keeping evsel__close to free ids.

Link: http://lkml.kernel.org/n/tip-suelj76p0b7qxsjbgxvh0fiw@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 tools/perf/builtin-trace.c                 |  2 +-
 tools/perf/lib/evsel.c                     | 26 +++++++++++++++++++++
 tools/perf/lib/include/internal/evsel.h    |  2 ++
 tools/perf/lib/include/perf/evsel.h        |  1 +
 tools/perf/lib/libperf.map                 |  1 +
 tools/perf/tests/openat-syscall-all-cpus.c |  2 +-
 tools/perf/tests/openat-syscall.c          |  2 +-
 tools/perf/util/evlist.c                   |  5 ++--
 tools/perf/util/evsel.c                    | 27 +++-------------------
 tools/perf/util/evsel.h                    |  3 +--
 10 files changed, 40 insertions(+), 31 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index df7e4979ae72..996a2d789ec7 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2413,7 +2413,7 @@ static int trace__event_handler(struct trace *trace, struct evsel *evsel,
 
 			if (evsel->max_events != ULONG_MAX && ++evsel->nr_events_printed == evsel->max_events) {
 				evsel__disable(evsel);
-				perf_evsel__close(evsel);
+				evsel__close(evsel);
 			}
 		}
 	}
diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c
index 7027dacb50f6..50f09e939229 100644
--- a/tools/perf/lib/evsel.c
+++ b/tools/perf/lib/evsel.c
@@ -111,3 +111,29 @@ int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *cpus,
 
 	return err;
 }
+
+void perf_evsel__close_fd(struct perf_evsel *evsel)
+{
+	int cpu, thread;
+
+	for (cpu = 0; cpu < xyarray__max_x(evsel->fd); cpu++)
+		for (thread = 0; thread < xyarray__max_y(evsel->fd); ++thread) {
+			close(FD(evsel, cpu, thread));
+			FD(evsel, cpu, thread) = -1;
+		}
+}
+
+void perf_evsel__free_fd(struct perf_evsel *evsel)
+{
+	xyarray__delete(evsel->fd);
+	evsel->fd = NULL;
+}
+
+void perf_evsel__close(struct perf_evsel *evsel)
+{
+	if (evsel->fd == NULL)
+		return;
+
+	perf_evsel__close_fd(evsel);
+	perf_evsel__free_fd(evsel);
+}
diff --git a/tools/perf/lib/include/internal/evsel.h b/tools/perf/lib/include/internal/evsel.h
index 3cb9a0f5f32e..878e2cf41ffc 100644
--- a/tools/perf/lib/include/internal/evsel.h
+++ b/tools/perf/lib/include/internal/evsel.h
@@ -21,5 +21,7 @@ struct perf_evsel {
 };
 
 int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
+void perf_evsel__close_fd(struct perf_evsel *evsel);
+void perf_evsel__free_fd(struct perf_evsel *evsel);
 
 #endif /* __LIBPERF_INTERNAL_EVSEL_H */
diff --git a/tools/perf/lib/include/perf/evsel.h b/tools/perf/lib/include/perf/evsel.h
index adda02f00369..41104ac662b0 100644
--- a/tools/perf/lib/include/perf/evsel.h
+++ b/tools/perf/lib/include/perf/evsel.h
@@ -15,5 +15,6 @@ LIBPERF_API struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr);
 LIBPERF_API void perf_evsel__delete(struct perf_evsel *evsel);
 LIBPERF_API int perf_evsel__open(struct perf_evsel *evsel, struct perf_cpu_map *cpus,
 				 struct perf_thread_map *threads);
+LIBPERF_API void perf_evsel__close(struct perf_evsel *evsel);
 
 #endif /* __LIBPERF_EVSEL_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index 7594d3d89c5f..0b90999dcdcb 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -15,6 +15,7 @@ LIBPERF_0.0.1 {
 		perf_evsel__delete;
 		perf_evsel__init;
 		perf_evsel__open;
+		perf_evsel__close;
 		perf_evlist__new;
 		perf_evlist__delete;
 		perf_evlist__init;
diff --git a/tools/perf/tests/openat-syscall-all-cpus.c b/tools/perf/tests/openat-syscall-all-cpus.c
index d161b1a78703..8322b6aa4047 100644
--- a/tools/perf/tests/openat-syscall-all-cpus.c
+++ b/tools/perf/tests/openat-syscall-all-cpus.c
@@ -116,7 +116,7 @@ int test__openat_syscall_event_on_all_cpus(struct test *test __maybe_unused, int
 
 	perf_evsel__free_counts(evsel);
 out_close_fd:
-	perf_evsel__close_fd(evsel);
+	perf_evsel__close_fd(&evsel->core);
 out_evsel_delete:
 	evsel__delete(evsel);
 out_cpu_map_delete:
diff --git a/tools/perf/tests/openat-syscall.c b/tools/perf/tests/openat-syscall.c
index 87c212545767..f217972977e0 100644
--- a/tools/perf/tests/openat-syscall.c
+++ b/tools/perf/tests/openat-syscall.c
@@ -57,7 +57,7 @@ int test__openat_syscall_event(struct test *test __maybe_unused, int subtest __m
 
 	err = 0;
 out_close_fd:
-	perf_evsel__close_fd(evsel);
+	perf_evsel__close_fd(&evsel->core);
 out_evsel_delete:
 	evsel__delete(evsel);
 out_thread_map_delete:
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 34f32027be1c..cf6e703ef600 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -34,6 +34,7 @@
 #include <linux/err.h>
 #include <linux/zalloc.h>
 #include <perf/evlist.h>
+#include <perf/evsel.h>
 #include <perf/cpumap.h>
 
 #ifdef LACKS_SIGQUEUE_PROTOTYPE
@@ -1303,7 +1304,7 @@ void evlist__close(struct evlist *evlist)
 	struct evsel *evsel;
 
 	evlist__for_each_entry_reverse(evlist, evsel)
-		perf_evsel__close(evsel);
+		evsel__close(evsel);
 }
 
 static int perf_evlist__create_syswide_maps(struct evlist *evlist)
@@ -1772,7 +1773,7 @@ struct evsel *perf_evlist__reset_weak_group(struct evlist *evsel_list,
 			is_open = false;
 		if (c2->leader == leader) {
 			if (is_open)
-				perf_evsel__close(c2);
+				evsel__close(c2);
 			c2->leader = c2;
 			c2->core.nr_members = 0;
 		}
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index d3c8488f7069..8d8ed36377f5 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1265,12 +1265,6 @@ int perf_evsel__alloc_id(struct evsel *evsel, int ncpus, int nthreads)
 	return 0;
 }
 
-static void perf_evsel__free_fd(struct evsel *evsel)
-{
-	xyarray__delete(evsel->core.fd);
-	evsel->core.fd = NULL;
-}
-
 static void perf_evsel__free_id(struct evsel *evsel)
 {
 	xyarray__delete(evsel->sample_id);
@@ -1289,23 +1283,12 @@ static void perf_evsel__free_config_terms(struct evsel *evsel)
 	}
 }
 
-void perf_evsel__close_fd(struct evsel *evsel)
-{
-	int cpu, thread;
-
-	for (cpu = 0; cpu < xyarray__max_x(evsel->core.fd); cpu++)
-		for (thread = 0; thread < xyarray__max_y(evsel->core.fd); ++thread) {
-			close(FD(evsel, cpu, thread));
-			FD(evsel, cpu, thread) = -1;
-		}
-}
-
 void perf_evsel__exit(struct evsel *evsel)
 {
 	assert(list_empty(&evsel->core.node));
 	assert(evsel->evlist == NULL);
 	perf_evsel__free_counts(evsel);
-	perf_evsel__free_fd(evsel);
+	perf_evsel__free_fd(&evsel->core);
 	perf_evsel__free_id(evsel);
 	perf_evsel__free_config_terms(evsel);
 	cgroup__put(evsel->cgrp);
@@ -2057,13 +2040,9 @@ int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
 	return err;
 }
 
-void perf_evsel__close(struct evsel *evsel)
+void evsel__close(struct evsel *evsel)
 {
-	if (evsel->core.fd == NULL)
-		return;
-
-	perf_evsel__close_fd(evsel);
-	perf_evsel__free_fd(evsel);
+	perf_evsel__close(&evsel->core);
 	perf_evsel__free_id(evsel);
 }
 
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index afd3a5b7bcc3..03fc8edad492 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -268,7 +268,6 @@ const char *perf_evsel__group_name(struct evsel *evsel);
 int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size);
 
 int perf_evsel__alloc_id(struct evsel *evsel, int ncpus, int nthreads);
-void perf_evsel__close_fd(struct evsel *evsel);
 
 void __perf_evsel__set_sample_bit(struct evsel *evsel,
 				  enum perf_event_sample_format bit);
@@ -298,7 +297,7 @@ int perf_evsel__open_per_thread(struct evsel *evsel,
 				struct perf_thread_map *threads);
 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
 		struct perf_thread_map *threads);
-void perf_evsel__close(struct evsel *evsel);
+void evsel__close(struct evsel *evsel);
 
 struct perf_sample;
 
-- 
2.21.0