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[v3,5/5] selftests: vdso: Support arm64 in getcpu() test

Message ID 20200819121318.52158-6-broonie@kernel.org
State New
Headers show
Series arm64: vdso: getcpu() support | expand

Commit Message

Mark Brown Aug. 19, 2020, 12:13 p.m. UTC 
arm64 exports the vDSO ABI with a version of LINUX_2.6.39 and symbols
prefixed with __kernel rather than __vdso. Update the getcpu() test to
handle this.

Signed-off-by: Mark Brown <broonie@kernel.org>

---
 tools/testing/selftests/vDSO/vdso_test_getcpu.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

-- 
2.20.1
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Patch

diff --git a/tools/testing/selftests/vDSO/vdso_test_getcpu.c b/tools/testing/selftests/vDSO/vdso_test_getcpu.c
index fc25ede131b8..4aeb65012b81 100644
--- a/tools/testing/selftests/vDSO/vdso_test_getcpu.c
+++ b/tools/testing/selftests/vDSO/vdso_test_getcpu.c
@@ -14,8 +14,18 @@ 
 #include "../kselftest.h"
 #include "parse_vdso.h"
 
+/*
+ * ARM64's vDSO exports its getcpu() implementation with a different
+ * name and version from other architectures, so we need to handle it
+ * as a special case.
+ */
+#if defined(__aarch64__)
+const char *version = "LINUX_2.6.39";
+const char *name = "__kernel_getcpu";
+#else
 const char *version = "LINUX_2.6";
 const char *name = "__vdso_getcpu";
+#endif
 
 struct getcpu_cache;
 typedef long (*getcpu_t)(unsigned int *, unsigned int *,