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-rw-r--r--lib/debugobjects.c11
-rw-r--r--lib/list_debug.c22
2 files changed, 27 insertions, 6 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 0ab9ae8057f0..d11808ca4bc4 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -79,30 +79,29 @@ static const char *obj_states[ODEBUG_STATE_MAX] = {
[ODEBUG_STATE_NOTAVAILABLE] = "not available",
};
-static int fill_pool(void)
+static void fill_pool(void)
{
gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN;
struct debug_obj *new;
unsigned long flags;
if (likely(obj_pool_free >= ODEBUG_POOL_MIN_LEVEL))
- return obj_pool_free;
+ return;
if (unlikely(!obj_cache))
- return obj_pool_free;
+ return;
while (obj_pool_free < ODEBUG_POOL_MIN_LEVEL) {
new = kmem_cache_zalloc(obj_cache, gfp);
if (!new)
- return obj_pool_free;
+ return;
raw_spin_lock_irqsave(&pool_lock, flags);
hlist_add_head(&new->node, &obj_pool);
obj_pool_free++;
raw_spin_unlock_irqrestore(&pool_lock, flags);
}
- return obj_pool_free;
}
/*
@@ -1052,10 +1051,10 @@ static int __init debug_objects_replace_static_objects(void)
cnt++;
}
}
+ local_irq_enable();
printk(KERN_DEBUG "ODEBUG: %d of %d active objects replaced\n", cnt,
obj_pool_used);
- local_irq_enable();
return 0;
free:
hlist_for_each_entry_safe(obj, node, tmp, &objects, node) {
diff --git a/lib/list_debug.c b/lib/list_debug.c
index 982b850d4e7a..3810b481f940 100644
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -10,6 +10,7 @@
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/kernel.h>
+#include <linux/rculist.h>
/*
* Insert a new entry between two known consecutive entries.
@@ -75,3 +76,24 @@ void list_del(struct list_head *entry)
entry->prev = LIST_POISON2;
}
EXPORT_SYMBOL(list_del);
+
+/*
+ * RCU variants.
+ */
+void __list_add_rcu(struct list_head *new,
+ struct list_head *prev, struct list_head *next)
+{
+ WARN(next->prev != prev,
+ "list_add_rcu corruption. next->prev should be "
+ "prev (%p), but was %p. (next=%p).\n",
+ prev, next->prev, next);
+ WARN(prev->next != next,
+ "list_add_rcu corruption. prev->next should be "
+ "next (%p), but was %p. (prev=%p).\n",
+ next, prev->next, prev);
+ new->next = next;
+ new->prev = prev;
+ rcu_assign_pointer(list_next_rcu(prev), new);
+ next->prev = new;
+}
+EXPORT_SYMBOL(__list_add_rcu);