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[PATCH] lockdep: misc fixes in lockdep.c 

- numeric string size replaced with constant in print_lock_name and
   print_lockdep_cache,

 - return on null pointer in print_lock_dependencies,

 - one more lockdep return with 0 with unlocking fix in mark_lock.

Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jarek Poplawski 2006-12-06 20:36:23 -08:00 committed by Linus Torvalds
parent 910b1b2e6d
commit b23984d0a1
1 changed files with 6 additions and 3 deletions
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9
kernel/lockdep.c
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@ -359,7 +359,7 @@ get_usage_chars(struct lock_class *class, char *c1, char *c2, char *c3, char *c4
static void print_lock_name(struct lock_class *class)
{
char str[128], c1, c2, c3, c4;
char str[KSYM_NAME_LEN + 1], c1, c2, c3, c4;
const char *name;
get_usage_chars(class, &c1, &c2, &c3, &c4);
@ -381,7 +381,7 @@ static void print_lock_name(struct lock_class *class)
static void print_lockdep_cache(struct lockdep_map *lock)
{
const char *name;
char str[128];
char str[KSYM_NAME_LEN + 1];
name = lock->name;
if (!name)
@ -451,7 +451,9 @@ static void print_lock_dependencies(struct lock_class *class, int depth)
print_lock_class_header(class, depth);
list_for_each_entry(entry, &class->locks_after, entry) {
DEBUG_LOCKS_WARN_ON(!entry->class);
if (DEBUG_LOCKS_WARN_ON(!entry->class))
return;
print_lock_dependencies(entry->class, depth + 1);
printk("%*s ... acquired at:\n",depth,"");
@ -1733,6 +1735,7 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
debug_atomic_dec(&nr_unused_locks);
break;
default:
__raw_spin_unlock(&hash_lock);
debug_locks_off();
WARN_ON(1);
return 0;