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net: sched: Remove broken definitions and un-hide for !LOCKDEP 

Currently, variables used only within lockdep expressions are flagged as
unused, requiring that these variables' declarations be decorated with
either #ifdef or __maybe_unused.  This results in ugly code.  This commit
therefore causes the full definitions of the lockdep_tcf_chain_is_locked()
and lockdep_tcf_proto_is_locked() functions to be visible even when
lockdep is not enabled, thus removing the need for the previous empty
functions that were provided in non-lockdep kernels.  This approach
further relies on dead-code elimination to remove any references to
functions or variables that are not available in non-lockdep kernels.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
--
CC: jhs@mojatatu.com
CC: xiyou.wangcong@gmail.com
CC: jiri@resnulli.us
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Jakub Kicinski 2020-09-16 11:45:25 -07:00 committed by Paul E. McKenney
parent d97f3bdf7a
commit a72e9d5472
1 changed files with 0 additions and 12 deletions
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12
include/net/sch_generic.h
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@ -435,7 +435,6 @@ 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);
@ -445,17 +444,6 @@ 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))