tools: Add additional SYM_*() stubs to linkage.h

Similar to commit f8d92fc527ff ("selftests: vDSO: fix include order in
build of test_vdso_chacha") add SYM_DATA_START, SYM_DATA_START_LOCAL, and
SYM_DATA_END stubs to tools/include/linux/linkage.h so that the proper
macros can be used within the kernel's vdso code as well as in the
vdso_test_chacha selftest.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/tools/include/linux/linkage.h b/tools/include/linux/linkage.h
index a48ff086899cda8804022449db8d24997d4b7eb8..a89620c550ed9741778dae96207337af3bb8015d 100644 (file)
--- a/tools/include/linux/linkage.h
+++ b/tools/include/linux/linkage.h
@@ -2,7 +2,9 @@
 #define _TOOLS_INCLUDE_LINUX_LINKAGE_H
 
 #define SYM_FUNC_START(x) .globl x; x:
-
 #define SYM_FUNC_END(x)
+#define SYM_DATA_START(x) .globl x; x:
+#define SYM_DATA_START_LOCAL(x) x:
+#define SYM_DATA_END(x)
 
 #endif /* _TOOLS_INCLUDE_LINUX_LINKAGE_H */