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SubjectRe: [PATCH] lockdep: silence warnings

* Alexey Dobriyan <adobriyan@gmail.com> wrote:

> net/bluetooth/af_bluetooth.c:57: warning: 'bt_key_strings' defined but not used
> net/bluetooth/af_bluetooth.c:68: warning: 'bt_slock_key_strings' defined but not used
>
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

similar to what i did a month ago:

--------------->
From 15d50b15843ccea15667f0bff5eb54d389a445f9 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 17 Oct 2008 15:55:07 +0200
Subject: [PATCH] lockdep: include/linux/lockdep.h - fix warning in net/bluetooth/af_bluetooth.c
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit

fix this warning:

net/bluetooth/af_bluetooth.c:60: warning: ‘bt_key_strings’ defined but not used
net/bluetooth/af_bluetooth.c:71: warning: ‘bt_slock_key_strings’ defined but not used

this is a lockdep macro problem in the !LOCKDEP case.

We cannot convert it to an inline because the macro works on multiple types,
but we can mark the parameter used.

[ also clean up a misaligned tab in sock_lock_init_class_and_name() ]

[ also remove #ifdefs from around af_family_clock_key strings - which
were certainly added to get rid of the ugly build warnings. ]

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
include/linux/lockdep.h | 5 +++--
include/net/sock.h | 2 +-
net/core/sock.c | 2 --
3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 331e5f1..29aec6e 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -331,10 +331,11 @@ static inline void lockdep_on(void)
# define lock_set_subclass(l, s, i) do { } while (0)
# define lockdep_init() do { } while (0)
# define lockdep_info() do { } while (0)
-# define lockdep_init_map(lock, name, key, sub) do { (void)(key); } while (0)
+# define lockdep_init_map(lock, name, key, sub) \
+ do { (void)(name); (void)(key); } while (0)
# define lockdep_set_class(lock, key) do { (void)(key); } while (0)
# define lockdep_set_class_and_name(lock, key, name) \
- do { (void)(key); } while (0)
+ do { (void)(key); (void)(name); } while (0)
#define lockdep_set_class_and_subclass(lock, key, sub) \
do { (void)(key); } while (0)
#define lockdep_set_subclass(lock, sub) do { } while (0)
diff --git a/include/net/sock.h b/include/net/sock.h
index ada50c0..8014a92 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -815,7 +815,7 @@ static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb)
*/
#define sock_lock_init_class_and_name(sk, sname, skey, name, key) \
do { \
- sk->sk_lock.owned = 0; \
+ sk->sk_lock.owned = 0; \
init_waitqueue_head(&sk->sk_lock.wq); \
spin_lock_init(&(sk)->sk_lock.slock); \
debug_check_no_locks_freed((void *)&(sk)->sk_lock, \
diff --git a/net/core/sock.c b/net/core/sock.c
index 5e2a313..341e394 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -136,7 +136,6 @@
static struct lock_class_key af_family_keys[AF_MAX];
static struct lock_class_key af_family_slock_keys[AF_MAX];

-#ifdef CONFIG_DEBUG_LOCK_ALLOC
/*
* Make lock validator output more readable. (we pre-construct these
* strings build-time, so that runtime initialization of socket
@@ -187,7 +186,6 @@ static const char *af_family_clock_key_strings[AF_MAX+1] = {
"clock-AF_RXRPC" , "clock-AF_ISDN" , "clock-AF_PHONET" ,
"clock-AF_MAX"
};
-#endif

/*
* sk_callback_lock locking rules are per-address-family,
--
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