[PATCH 1/5] selftests: vdso: Fix vDSO name for powerpc

From: Christophe Leroy
Date: Fri Aug 30 2024 - 08:29:14 EST


Following error occurs when running vdso_test_correctness on powerpc:

~ # ./vdso_test_correctness
[WARN] failed to find vDSO
[SKIP] No vDSO, so skipping clock_gettime() tests
[SKIP] No vDSO, so skipping clock_gettime64() tests
[RUN] Testing getcpu...
[OK] CPU 0: syscall: cpu 0, node 0

On powerpc, vDSO is neither called linux-vdso.so.1 nor linux-gate.so.1
but linux-vdso32.so.1 or linux-vdso64.so.1.

Also search those two names before giving up.

Fixes: c7e5789b24d3 ("kselftest: Move test_vdso to the vDSO test suite")
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
---
tools/testing/selftests/vDSO/vdso_test_correctness.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/vDSO/vdso_test_correctness.c b/tools/testing/selftests/vDSO/vdso_test_correctness.c
index e691a3cf1491..cdb697ae8343 100644
--- a/tools/testing/selftests/vDSO/vdso_test_correctness.c
+++ b/tools/testing/selftests/vDSO/vdso_test_correctness.c
@@ -114,6 +114,12 @@ static void fill_function_pointers()
if (!vdso)
vdso = dlopen("linux-gate.so.1",
RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
+ if (!vdso)
+ vdso = dlopen("linux-vdso32.so.1",
+ RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
+ if (!vdso)
+ vdso = dlopen("linux-vdso64.so.1",
+ RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
if (!vdso) {
printf("[WARN]\tfailed to find vDSO\n");
return;
--
2.44.0