On non-SMP kernels __per_cpu_start is not 0, so look it up in kallsyms.
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
tools/testing/selftests/bpf/prog_tests/ksyms.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms.c b/tools/testing/selftests/bpf/prog_tests/ksyms.c
index e3d6777226a8..b771804b2342 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms.c
@@ -32,6 +32,7 @@ static __u64 kallsyms_find(const char *sym)
void test_ksyms(void)
{
+ __u64 per_cpu_start_addr = kallsyms_find("__per_cpu_start");
__u64 link_fops_addr = kallsyms_find("bpf_link_fops");
const char *btf_path = "/sys/kernel/btf/vmlinux";
struct test_ksyms *skel;
@@ -63,8 +64,9 @@ void test_ksyms(void)
"got %llu, exp %llu\n", data->out__bpf_link_fops1, (__u64)0);
CHECK(data->out__btf_size != btf_size, "btf_size",
"got %llu, exp %llu\n", data->out__btf_size, btf_size);
- CHECK(data->out__per_cpu_start != 0, "__per_cpu_start",
- "got %llu, exp %llu\n", data->out__per_cpu_start, (__u64)0);
+ CHECK(data->out__per_cpu_start != per_cpu_start_addr, "__per_cpu_start",
+ "got %llu, exp %llu\n", data->out__per_cpu_start,
+ per_cpu_start_addr);
cleanup:
test_ksyms__destroy(skel);
--
2.25.4
