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Commit 23d95a03 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
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[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: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 81fc685a

kernel/lockdep.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -2437,6 +2437,7 @@ EXPORT_SYMBOL_GPL(lock_release); 
void lockdep_reset(void)

void lockdep_reset(void)

{

{

	unsigned long flags;

	unsigned long flags;

	int i;





	raw_local_irq_save(flags);

	raw_local_irq_save(flags);

	current->curr_chain_key = 0;

	current->curr_chain_key = 0;
@@ -2447,6 +2448,8 @@ void lockdep_reset(void) 
	nr_softirq_chains = 0;

	nr_softirq_chains = 0;

	nr_process_chains = 0;

	nr_process_chains = 0;

	debug_locks = 1;

	debug_locks = 1;

	for (i = 0; i < CHAINHASH_SIZE; i++)

		INIT_LIST_HEAD(chainhash_table + i);

	raw_local_irq_restore(flags);

	raw_local_irq_restore(flags);

}

}