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authorIngo Molnar <mingo@elte.hu>2008-07-06 08:23:39 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-06 08:23:39 -0400
commit68083e05d72d94f347293d8cc0067050ba904bfa (patch)
tree842e71365bd90866be7add181661a4039d891564 /lib/debugobjects.c
parent7baac8b91f9871ba8cb09af84de4ae1d86d07812 (diff)
parentb7279469d66b55119784b8b9529c99c1955fe747 (diff)
Merge commit 'v2.6.26-rc9' into cpus4096
Diffstat (limited to 'lib/debugobjects.c')
-rw-r--r--lib/debugobjects.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index a76a5e122ae1..85b18d79be89 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -68,6 +68,7 @@ static int fill_pool(void)
68{ 68{
69 gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN; 69 gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN;
70 struct debug_obj *new; 70 struct debug_obj *new;
71 unsigned long flags;
71 72
72 if (likely(obj_pool_free >= ODEBUG_POOL_MIN_LEVEL)) 73 if (likely(obj_pool_free >= ODEBUG_POOL_MIN_LEVEL))
73 return obj_pool_free; 74 return obj_pool_free;
@@ -81,10 +82,10 @@ static int fill_pool(void)
81 if (!new) 82 if (!new)
82 return obj_pool_free; 83 return obj_pool_free;
83 84
84 spin_lock(&pool_lock); 85 spin_lock_irqsave(&pool_lock, flags);
85 hlist_add_head(&new->node, &obj_pool); 86 hlist_add_head(&new->node, &obj_pool);
86 obj_pool_free++; 87 obj_pool_free++;
87 spin_unlock(&pool_lock); 88 spin_unlock_irqrestore(&pool_lock, flags);
88 } 89 }
89 return obj_pool_free; 90 return obj_pool_free;
90} 91}
@@ -110,16 +111,13 @@ static struct debug_obj *lookup_object(void *addr, struct debug_bucket *b)
110} 111}
111 112
112/* 113/*
113 * Allocate a new object. If the pool is empty and no refill possible, 114 * Allocate a new object. If the pool is empty, switch off the debugger.
114 * switch off the debugger.
115 */ 115 */
116static struct debug_obj * 116static struct debug_obj *
117alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr) 117alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr)
118{ 118{
119 struct debug_obj *obj = NULL; 119 struct debug_obj *obj = NULL;
120 int retry = 0;
121 120
122repeat:
123 spin_lock(&pool_lock); 121 spin_lock(&pool_lock);
124 if (obj_pool.first) { 122 if (obj_pool.first) {
125 obj = hlist_entry(obj_pool.first, typeof(*obj), node); 123 obj = hlist_entry(obj_pool.first, typeof(*obj), node);
@@ -141,9 +139,6 @@ repeat:
141 } 139 }
142 spin_unlock(&pool_lock); 140 spin_unlock(&pool_lock);
143 141
144 if (fill_pool() && !obj && !retry++)
145 goto repeat;
146
147 return obj; 142 return obj;
148} 143}
149 144
@@ -261,6 +256,8 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack)
261 struct debug_obj *obj; 256 struct debug_obj *obj;
262 unsigned long flags; 257 unsigned long flags;
263 258
259 fill_pool();
260
264 db = get_bucket((unsigned long) addr); 261 db = get_bucket((unsigned long) addr);
265 262
266 spin_lock_irqsave(&db->lock, flags); 263 spin_lock_irqsave(&db->lock, flags);