[PATCH 1/2] selftests/bpf: bpf_cookie: skip kprobe_multi tests without bpf_testmod

[Sun Jian <sun.jian.kdev@gmail.com>]

The kprobe_multi subtests rely on bpf_testmod fentry ksyms.

When bpf_testmod isn't available, libbpf fails to resolve
bpf_testmod_fentry_test* and skeleton load fails with -ESRCH, causing
false failures.

Skip these subtests when env.has_testmod is false.

Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>
---
 tools/testing/selftests/bpf/prog_tests/bpf_cookie.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
index 75f4dff7d042..50f5e11e6e65 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
@@ -105,6 +105,11 @@ static void kprobe_multi_link_api_subtest(void)
 	unsigned long long addrs[8];
 	__u64 cookies[8];
 
+	if (!env.has_testmod) {
+		test__skip();
+		return;
+	}
+
 	if (!ASSERT_OK(load_kallsyms(), "load_kallsyms"))
 		goto cleanup;
 
@@ -192,6 +197,11 @@ static void kprobe_multi_attach_api_subtest(void)
 	};
 	__u64 cookies[8];
 
+	if (!env.has_testmod) {
+		test__skip();
+		return;
+	}
+
 	skel = kprobe_multi__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
 		goto cleanup;
@@ -451,7 +461,7 @@ static void pe_subtest(struct test_bpf_cookie *skel)
 	attr.type = PERF_TYPE_SOFTWARE;
 	attr.config = PERF_COUNT_SW_CPU_CLOCK;
 	attr.sample_period = 100000;
-	pfd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, PERF_FLAG_FD_CLOEXEC);
+	pfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, PERF_FLAG_FD_CLOEXEC);
 	if (!ASSERT_GE(pfd, 0, "perf_fd"))
 		goto cleanup;
 
-- 
2.43.0