linux-kernel - [PATCH linux-next] include/getcpu.h: Fixed kernel test robot warning

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Date:   Sat, 28 Nov 2020 21:11:57 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     hca@...ux.ibm.com, kbuild-all@...ts.01.org, svens@...ux.ibm.com
Cc:     clang-built-linux@...glegroups.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Souptick Joarder <jrdr.linux@...il.com>
Subject: [PATCH linux-next] include/getcpu.h: Fixed kernel test robot warning

Kernel test robot generates below warning ->

>> 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)
       ^
   arch/s390/kernel/vdso64/getcpu.c:8:1: note: declare 'static' if the
function is not intended to be used outside of this translation unit
   int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct
getcpu_cache *unused)
   ^
   static
   1 warning generated.

vim +/__s390_vdso_getcpu +8 arch/s390/kernel/vdso64/getcpu.c

     7
   > 8  int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct
   > getcpu_cache *unused)

It is fixed by adding a prototype.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
---
 include/linux/getcpu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/getcpu.h b/include/linux/getcpu.h
index c304dcd..43c9208 100644
--- a/include/linux/getcpu.h
+++ b/include/linux/getcpu.h
@@ -16,4 +16,5 @@ struct getcpu_cache {
 	unsigned long blob[128 / sizeof(long)];
 };
 
+int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused);
 #endif
-- 
1.9.1