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rcu: Implement lockdep_rcu_enabled for !CONFIG_DEBUG_LOCK_ALLOC

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Provide an implementation for debug_lockdep_rcu_enabled() when
CONFIG_DEBUG_LOCK_ALLOC is not enabled. This allows code to check
if rcu lockdep debugging is available without needing an extra
check if CONFIG_DEBUG_LOCK_ALLOC is enabled.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
John Ogness 2022-11-07 15:21:59 +01:06 committed by Paul E. McKenney
parent e29a4915db
commit f733615e39
1 changed files with 5 additions and 0 deletions
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5
include/linux/rcupdate.h
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@ -340,6 +340,11 @@ static inline int rcu_read_lock_any_held(void)
return !preemptible();
}
static inline int debug_lockdep_rcu_enabled(void)
{
return 0;
}
#endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */
#ifdef CONFIG_PROVE_RCU