From 23d95a03d63eff25118b50737006ce6e7c1b8def Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 13 Dec 2006 00:34:40 -0800
Subject: [PATCH] [PATCH] lockdep: improve lockdep_reset()
Clear all the chains during lockdep_reset(). This fixes some locking-selftest
false positives i saw on -rt. (never saw those on mainline though, but it
could happen.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
kernel/lockdep.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 5ba2825bd46a..77fa791f6f31 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2437,6 +2437,7 @@ EXPORT_SYMBOL_GPL(lock_release);
void lockdep_reset(void)
{
unsigned long flags;
+ int i;
raw_local_irq_save(flags);
current->curr_chain_key = 0;
@@ -2447,6 +2448,8 @@ void lockdep_reset(void)
nr_softirq_chains = 0;
nr_process_chains = 0;
debug_locks = 1;
+ for (i = 0; i < CHAINHASH_SIZE; i++)
+ INIT_LIST_HEAD(chainhash_table + i);
raw_local_irq_restore(flags);
}
--
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