s390/vdso: add missing prototypes for vdso functions

clang W=1 warns about missing prototypes:

>> arch/s390/kernel/vdso64/getcpu.c:8:5: warning: no previous prototype for function '__s390_vdso_getcpu' [-Wmissing-prototypes]
   int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
       ^

Add a local header file in order to get rid of this warnings.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

diff --git a/arch/s390/kernel/vdso64/getcpu.c b/arch/s390/kernel/vdso64/getcpu.c
index a5da7a9..5b2bc74 100644 (file)
--- a/arch/s390/kernel/vdso64/getcpu.c
+++ b/arch/s390/kernel/vdso64/getcpu.c
@@ -4,6 +4,7 @@
 #include <linux/compiler.h>
 #include <linux/getcpu.h>
 #include <asm/timex.h>
+#include "vdso.h"
 
 int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
 {

diff --git a/arch/s390/kernel/vdso64/vdso.h b/arch/s390/kernel/vdso64/vdso.h
new file mode 100644 (file)
index 0000000..34c7a23
--- /dev/null
+++ b/arch/s390/kernel/vdso64/vdso.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ARCH_S390_KERNEL_VDSO64_VDSO_H
+#define __ARCH_S390_KERNEL_VDSO64_VDSO_H
+
+#include <vdso/datapage.h>
+
+struct getcpu_cache;
+
+int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused);
+int __s390_vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
+int __s390_vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
+int __s390_vdso_clock_getres(clockid_t clock, struct __kernel_timespec *ts);
+
+#endif /* __ARCH_S390_KERNEL_VDSO64_VDSO_H */

diff --git a/arch/s390/kernel/vdso64/vdso64_generic.c b/arch/s390/kernel/vdso64/vdso64_generic.c
index a8cef7e..a9aa756 100644 (file)
--- a/arch/s390/kernel/vdso64/vdso64_generic.c
+++ b/arch/s390/kernel/vdso64/vdso64_generic.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "../../../../lib/vdso/gettimeofday.c"
+#include "vdso.h"
 
 int __s390_vdso_gettimeofday(struct __kernel_old_timeval *tv,
                             struct timezone *tz)