netdev - [net-next:master 194/208] include/net/sock.h:1363:13: error: 'lockdep_sock_is

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Date:	Fri, 8 Apr 2016 05:34:28 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc:	kbuild-all@...org, netdev@...r.kernel.org
Subject: [net-next:master 194/208] include/net/sock.h:1363:13: error:
 'lockdep_sock_is_held' defined but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head:   889750bd2e08a94d52a116056d462b3a8e5616a7
commit: 1e1d04e678cf72442f57ce82803c7a407769135f [194/208] net: introduce lockdep_is_held and update various places to use it
config: sparc64-allnoconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 1e1d04e678cf72442f57ce82803c7a407769135f
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   In file included from include/linux/tcp.h:22:0,
                    from include/linux/ipv6.h:75,
                    from include/net/ipv6.h:16,
                    from include/linux/sunrpc/clnt.h:27,
                    from include/linux/nfs_fs.h:30,
                    from arch/sparc/kernel/sys_sparc32.c:24:
   include/net/sock.h: In function 'lockdep_sock_is_held':
   include/net/sock.h:1367:2: error: implicit declaration of function 'lockdep_is_held' [-Werror=implicit-function-declaration]
     return lockdep_is_held(&sk->sk_lock) ||
     ^
   arch/sparc/kernel/sys_sparc32.c: At top level:
>> include/net/sock.h:1363:13: error: 'lockdep_sock_is_held' defined but not used [-Werror=unused-function]
    static bool lockdep_sock_is_held(const struct sock *csk)
                ^
   cc1: all warnings being treated as errors

vim +/lockdep_sock_is_held +1363 include/net/sock.h

  1357				sizeof((sk)->sk_lock));				\
  1358		lockdep_set_class_and_name(&(sk)->sk_lock.slock,		\
  1359					(skey), (sname));				\
  1360		lockdep_init_map(&(sk)->sk_lock.dep_map, (name), (key), 0);	\
  1361	} while (0)
  1362	
> 1363	static bool lockdep_sock_is_held(const struct sock *csk)
  1364	{
  1365		struct sock *sk = (struct sock *)csk;
  1366	
> 1367		return lockdep_is_held(&sk->sk_lock) ||
  1368		       lockdep_is_held(&sk->sk_lock.slock);
  1369	}
  1370	

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