netdev - [PATCH bpf-next v4 1/2] selftests/bpf: do not export subtest as standalone test

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Date:   Sun,  6 Feb 2022 12:31:06 +0800
From:   Hou Tao <hotforest@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andrii@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        netdev@...r.kernel.org, bpf@...r.kernel.org, houtao1@...wei.com
Subject: [PATCH bpf-next v4 1/2] selftests/bpf: do not export subtest as standalone test

Two subtests in ksyms_module.c are not qualified as static, so these
subtests are exported as standalone tests in tests.h and lead to
confusion for the output of "./test_progs -t ksyms_module".

By using the following command:

  grep "^void \(serial_\)\?test_[a-zA-Z0-9_]\+(\(void\)\?)" \
      tools/testing/selftests/bpf/prog_tests/*.c | \
	awk -F : '{print $1}' | sort | uniq -c | awk '$1 != 1'

Find out that other tests also have the similar problem, so fix
these tests by marking subtests in these tests as static. For
xdp_adjust_frags.c, there is just one subtest, so just export
the subtest directly.

Signed-off-by: Hou Tao <houtao1@...wei.com>
---
 tools/testing/selftests/bpf/prog_tests/ksyms_module.c      | 4 ++--
 tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c  | 6 ------
 tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c   | 4 ++--
 tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c | 4 ++--
 tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c | 2 +-
 5 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
index ecc58c9e7631..a1ebac70ec29 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
@@ -6,7 +6,7 @@
 #include "test_ksyms_module.lskel.h"
 #include "test_ksyms_module.skel.h"
 
-void test_ksyms_module_lskel(void)
+static void test_ksyms_module_lskel(void)
 {
 	struct test_ksyms_module_lskel *skel;
 	int err;
@@ -33,7 +33,7 @@ void test_ksyms_module_lskel(void)
 	test_ksyms_module_lskel__destroy(skel);
 }
 
-void test_ksyms_module_libbpf(void)
+static void test_ksyms_module_libbpf(void)
 {
 	struct test_ksyms_module *skel;
 	int err;
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c
index 134d0ac32f59..fc2d8fa8dac5 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_frags.c
@@ -102,9 +102,3 @@ void test_xdp_update_frags(void)
 out:
 	bpf_object__close(obj);
 }
-
-void test_xdp_adjust_frags(void)
-{
-	if (test__start_subtest("xdp_adjust_frags"))
-		test_xdp_update_frags();
-}
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
index 528a8c387720..21ceac24e174 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
@@ -133,7 +133,7 @@ static void test_xdp_adjust_tail_grow2(void)
 	bpf_object__close(obj);
 }
 
-void test_xdp_adjust_frags_tail_shrink(void)
+static void test_xdp_adjust_frags_tail_shrink(void)
 {
 	const char *file = "./test_xdp_adjust_tail_shrink.o";
 	__u32 exp_size;
@@ -200,7 +200,7 @@ void test_xdp_adjust_frags_tail_shrink(void)
 	bpf_object__close(obj);
 }
 
-void test_xdp_adjust_frags_tail_grow(void)
+static void test_xdp_adjust_frags_tail_grow(void)
 {
 	const char *file = "./test_xdp_adjust_tail_grow.o";
 	__u32 exp_size;
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
index b353e1f3acb5..f775a1613833 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
@@ -8,7 +8,7 @@
 
 #define IFINDEX_LO	1
 
-void test_xdp_with_cpumap_helpers(void)
+static void test_xdp_with_cpumap_helpers(void)
 {
 	struct test_xdp_with_cpumap_helpers *skel;
 	struct bpf_prog_info info = {};
@@ -68,7 +68,7 @@ void test_xdp_with_cpumap_helpers(void)
 	test_xdp_with_cpumap_helpers__destroy(skel);
 }
 
-void test_xdp_with_cpumap_frags_helpers(void)
+static void test_xdp_with_cpumap_frags_helpers(void)
 {
 	struct test_xdp_with_cpumap_frags_helpers *skel;
 	struct bpf_prog_info info = {};
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index 463a72fc3e70..ead40016c324 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
@@ -81,7 +81,7 @@ static void test_neg_xdp_devmap_helpers(void)
 	}
 }
 
-void test_xdp_with_devmap_frags_helpers(void)
+static void test_xdp_with_devmap_frags_helpers(void)
 {
 	struct test_xdp_with_devmap_frags_helpers *skel;
 	struct bpf_prog_info info = {};
-- 
2.35.1