| From | John Ogness <> | Subject | [PATCH printk v3 01/40] rcu: implement lockdep_rcu_enabled for !CONFIG_DEBUG_LOCK_ALLOC | Date | Mon, 7 Nov 2022 15:21:59 +0106 |
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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> --- I also sent this patch to Paul as a suggestion. If it is not acceptable, I just need to add an ifdef CONFIG_DEBUG_LOCK_ALLOC into console_list_lock() of patch 21.
include/linux/rcupdate.h | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 08605ce7379d..65178c40ab6f 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -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 -- 2.30.2
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