Merge branch 'v2.6.25-rc3-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep

3fca96ee · Linus Torvalds <[email protected]> · 2008-02-26 07:49:15 -08:00

* 'v2.6.25-rc3-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep:
  Subject: lockdep: include all lock classes in all_lock_classes
  lockdep: increase MAX_LOCK_DEPTH

Commit: 3fca96eed1cc9fb524aec536bba8ae921563f1bb
Parents: 98c1fc93 · 1481197b

Merge commit. Changes below are compared with the first parent: 98c1fc93.

Changes

2 files changed · +5 −5

File	Status	Add	Del	Content
include/linux/sched.h	modified	+1	−1	View file
kernel/lockdep.c	modified	+4	−4	View file

include/linux/sched.h

View file

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9c17e82..2c9621f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1190,7 +1190,7 @@ struct task_struct {
 	int softirq_context;
 #endif
 #ifdef CONFIG_LOCKDEP
-# define MAX_LOCK_DEPTH 30UL
+# define MAX_LOCK_DEPTH 48UL
 	u64 curr_chain_key;
 	int lockdep_depth;
 	struct held_lock held_locks[MAX_LOCK_DEPTH];

kernel/lockdep.c

View file

diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3574379..81a4e4a 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -779,6 +779,10 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
 	 * parallel walking of the hash-list safe:
 	 */
 	list_add_tail_rcu(&class->hash_entry, hash_head);
+	/*
+	 * Add it to the global list of classes:
+	 */
+	list_add_tail_rcu(&class->lock_entry, &all_lock_classes);
 
 	if (verbose(class)) {
 		graph_unlock();
@@ -2282,10 +2286,6 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
 			return 0;
 		break;
 	case LOCK_USED:
-		/*
-		 * Add it to the global list of classes:
-		 */
-		list_add_tail_rcu(&this->class->lock_entry, &all_lock_classes);
 		debug_atomic_dec(&nr_unused_locks);
 		break;
 	default: