selftests/bpf: Make sure enum-less bpf_enable_stats() API works in C++ mode

Just a simple test to make sure we don't introduce unwanted compiler warnings and API still supports passing enums as input argument.

Andrii Nakryiko committed 3 years ago

Commit f8186bf1 parent b4269341 file · +10 −3Browse files

Showing the changes to tools/testing/selftests/bpf/test_cpp.cpp (1 of 1 file). Show all

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@@ -1,9 +1,9 @@
1	1	/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
2	2	#include <iostream>
3		−#pragma GCC diagnostic push
4		−#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
	3	+#include <unistd.h>
	4	+#include <linux/bpf.h>
	5	+#include <linux/btf.h>
5	6	#include <bpf/libbpf.h>
6		−#pragma GCC diagnostic pop
7	7	#include <bpf/bpf.h>
8	8	#include <bpf/btf.h>
9	9	#include "test_core_extern.skel.h"
@@ -99,6 +99,7 @@ int main(int argc, char *argv[]) · 89 unmodified lines
99	99	struct btf_dump_opts opts = { };
100	100	struct test_core_extern *skel;
101	101	struct btf *btf;
	102	+ int fd;
102	103
103	104	try_skeleton_template();
104	105
@@ -117,6 +118,12 @@ int main(int argc, char *argv[]) · 12 unmodified lines
117	118	skel = test_core_extern__open_and_load();
118	119	test_core_extern__destroy(skel);
119	120
	121	+ fd = bpf_enable_stats(BPF_STATS_RUN_TIME);
	122	+ if (fd < 0)
	123	+ std::cout << "FAILED to enable stats: " << fd << std::endl;
	124	+ else
	125	+ ::close(fd);
	126	+
120	127	std::cout << "DONE!" << std::endl;
121	128
122	129	return 0;