From 27c3b23226fc649de47e4886ccbf994482f388ba Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 13 Dec 2006 00:34:42 -0800 Subject: [PATCH] [PATCH] lockdep: use chain hash on CONFIG_DEBUG_LOCKDEP too CONFIG_DEBUG_LOCKDEP is unacceptably slow because it does not utilize the chain-hash. Turn the chain-hash back on in this case too. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/lockdep.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index c4ffd3c1dec4..69e92c6b0472 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -1276,14 +1276,6 @@ static inline int lookup_chain_cache(u64 chain_key, struct lock_class *class) if (chain->chain_key == chain_key) { cache_hit: debug_atomic_inc(&chain_lookup_hits); - /* - * In the debugging case, force redundant checking - * by returning 1: - */ -#ifdef CONFIG_DEBUG_LOCKDEP - __raw_spin_lock(&hash_lock); - return 1; -#endif if (very_verbose(class)) printk("\nhash chain already cached, key: %016Lx tail class: [%p] %s\n", chain_key, class->key, class->name); return 0; -- 2.20.1