linux-kernel - [PATCH net-next 4/7] net: sched: remove broken definitions and un-hide for !LOCKDEP

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Message-Id: <20200916184528.498184-5-kuba@kernel.org>
Date:   Wed, 16 Sep 2020 11:45:25 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net, paulmck@...nel.org, joel@...lfernandes.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        rcu@...r.kernel.org, josh@...htriplett.org, peterz@...radead.org,
        christian.brauner@...ntu.com, Jakub Kicinski <kuba@...nel.org>,
        jhs@...atatu.com, xiyou.wangcong@...il.com, jiri@...nulli.us
Subject: [PATCH net-next 4/7] net: sched: remove broken definitions and un-hide for !LOCKDEP

We're trying to make LOCKDEP-related function declarations
visible to the compiler and depend on dead code elimination
to remove them.

Fix up the situation with lockdep_tcf_chain_is_locked() and
lockdep_tcf_proto_is_locked().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
--
CC: jhs@...atatu.com
CC: xiyou.wangcong@...il.com
CC: jiri@...nulli.us
---
 include/net/sch_generic.h | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index d60e7c39d60c..1aaa9e3d2e9c 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -432,7 +432,6 @@ struct tcf_block {
 	struct mutex proto_destroy_lock; /* Lock for proto_destroy hashtable. */
 };
 
-#ifdef CONFIG_PROVE_LOCKING
 static inline bool lockdep_tcf_chain_is_locked(struct tcf_chain *chain)
 {
 	return lockdep_is_held(&chain->filter_chain_lock);
@@ -442,17 +441,6 @@ static inline bool lockdep_tcf_proto_is_locked(struct tcf_proto *tp)
 {
 	return lockdep_is_held(&tp->lock);
 }
-#else
-static inline bool lockdep_tcf_chain_is_locked(struct tcf_block *chain)
-{
-	return true;
-}
-
-static inline bool lockdep_tcf_proto_is_locked(struct tcf_proto *tp)
-{
-	return true;
-}
-#endif /* #ifdef CONFIG_PROVE_LOCKING */
 
 #define tcf_chain_dereference(p, chain)					\
 	rcu_dereference_protected(p, lockdep_tcf_chain_is_locked(chain))
-- 
2.26.2