debugobjects: Convert to raw_spinlocks

Convert locks which cannot be sleeping locks in preempt-rt to
raw_spinlocks.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index eae56fddfa3bd6517653e9387de92c4e56875044..a9a8996d286a8e64f5ac23aec220b7645356cfac 100644 (file)
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -26,14 +26,14 @@
 
 struct debug_bucket {
        struct hlist_head       list;
-       spinlock_t              lock;
+       raw_spinlock_t          lock;
 };
 
 static struct debug_bucket     obj_hash[ODEBUG_HASH_SIZE];
 
 static struct debug_obj                obj_static_pool[ODEBUG_POOL_SIZE] __initdata;
 
-static DEFINE_SPINLOCK(pool_lock);
+static DEFINE_RAW_SPINLOCK(pool_lock);
 
 static HLIST_HEAD(obj_pool);
 
@@ -96,10 +96,10 @@ static int fill_pool(void)
                if (!new)
                        return obj_pool_free;
 
-               spin_lock_irqsave(&pool_lock, flags);
+               raw_spin_lock_irqsave(&pool_lock, flags);
                hlist_add_head(&new->node, &obj_pool);
                obj_pool_free++;
-               spin_unlock_irqrestore(&pool_lock, flags);
+               raw_spin_unlock_irqrestore(&pool_lock, flags);
        }
        return obj_pool_free;
 }
@@ -133,7 +133,7 @@ alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr)
 {
        struct debug_obj *obj = NULL;
 
-       spin_lock(&pool_lock);
+       raw_spin_lock(&pool_lock);
        if (obj_pool.first) {
                obj         = hlist_entry(obj_pool.first, typeof(*obj), node);
 
@@ -152,7 +152,7 @@ alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr)
                if (obj_pool_free < obj_pool_min_free)
                        obj_pool_min_free = obj_pool_free;
        }
-       spin_unlock(&pool_lock);
+       raw_spin_unlock(&pool_lock);
 
        return obj;
 }
@@ -165,7 +165,7 @@ static void free_obj_work(struct work_struct *work)
        struct debug_obj *obj;
        unsigned long flags;
 
-       spin_lock_irqsave(&pool_lock, flags);
+       raw_spin_lock_irqsave(&pool_lock, flags);
        while (obj_pool_free > ODEBUG_POOL_SIZE) {
                obj = hlist_entry(obj_pool.first, typeof(*obj), node);
                hlist_del(&obj->node);
@@ -174,11 +174,11 @@ static void free_obj_work(struct work_struct *work)
                 * We release pool_lock across kmem_cache_free() to
                 * avoid contention on pool_lock.
                 */
-               spin_unlock_irqrestore(&pool_lock, flags);
+               raw_spin_unlock_irqrestore(&pool_lock, flags);
                kmem_cache_free(obj_cache, obj);
-               spin_lock_irqsave(&pool_lock, flags);
+               raw_spin_lock_irqsave(&pool_lock, flags);
        }
-       spin_unlock_irqrestore(&pool_lock, flags);
+       raw_spin_unlock_irqrestore(&pool_lock, flags);
 }
 
 /*
@@ -190,7 +190,7 @@ static void free_object(struct debug_obj *obj)
        unsigned long flags;
        int sched = 0;
 
-       spin_lock_irqsave(&pool_lock, flags);
+       raw_spin_lock_irqsave(&pool_lock, flags);
        /*
         * schedule work when the pool is filled and the cache is
         * initialized:
@@ -200,7 +200,7 @@ static void free_object(struct debug_obj *obj)
        hlist_add_head(&obj->node, &obj_pool);
        obj_pool_free++;
        obj_pool_used--;
-       spin_unlock_irqrestore(&pool_lock, flags);
+       raw_spin_unlock_irqrestore(&pool_lock, flags);
        if (sched)
                schedule_work(&debug_obj_work);
 }
@@ -221,9 +221,9 @@ static void debug_objects_oom(void)
        printk(KERN_WARNING "ODEBUG: Out of memory. ODEBUG disabled\n");
 
        for (i = 0; i < ODEBUG_HASH_SIZE; i++, db++) {
-               spin_lock_irqsave(&db->lock, flags);
+               raw_spin_lock_irqsave(&db->lock, flags);
                hlist_move_list(&db->list, &freelist);
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
 
                /* Now free them */
                hlist_for_each_entry_safe(obj, node, tmp, &freelist, node) {
@@ -303,14 +303,14 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (!obj) {
                obj = alloc_object(addr, db, descr);
                if (!obj) {
                        debug_objects_enabled = 0;
-                       spin_unlock_irqrestore(&db->lock, flags);
+                       raw_spin_unlock_irqrestore(&db->lock, flags);
                        debug_objects_oom();
                        return;
                }
@@ -327,7 +327,7 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack)
        case ODEBUG_STATE_ACTIVE:
                debug_print_object(obj, "init");
                state = obj->state;
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
                debug_object_fixup(descr->fixup_init, addr, state);
                return;
 
@@ -338,7 +338,7 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack)
                break;
        }
 
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
 }
 
 /**
@@ -385,7 +385,7 @@ void debug_object_activate(void *addr, struct debug_obj_descr *descr)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (obj) {
@@ -398,7 +398,7 @@ void debug_object_activate(void *addr, struct debug_obj_descr *descr)
                case ODEBUG_STATE_ACTIVE:
                        debug_print_object(obj, "activate");
                        state = obj->state;
-                       spin_unlock_irqrestore(&db->lock, flags);
+                       raw_spin_unlock_irqrestore(&db->lock, flags);
                        debug_object_fixup(descr->fixup_activate, addr, state);
                        return;
 
@@ -408,11 +408,11 @@ void debug_object_activate(void *addr, struct debug_obj_descr *descr)
                default:
                        break;
                }
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
                return;
        }
 
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
        /*
         * This happens when a static object is activated. We
         * let the type specific code decide whether this is
@@ -438,7 +438,7 @@ void debug_object_deactivate(void *addr, struct debug_obj_descr *descr)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (obj) {
@@ -463,7 +463,7 @@ void debug_object_deactivate(void *addr, struct debug_obj_descr *descr)
                debug_print_object(&o, "deactivate");
        }
 
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
 }
 
 /**
@@ -483,7 +483,7 @@ void debug_object_destroy(void *addr, struct debug_obj_descr *descr)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (!obj)
@@ -498,7 +498,7 @@ void debug_object_destroy(void *addr, struct debug_obj_descr *descr)
        case ODEBUG_STATE_ACTIVE:
                debug_print_object(obj, "destroy");
                state = obj->state;
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
                debug_object_fixup(descr->fixup_destroy, addr, state);
                return;
 
@@ -509,7 +509,7 @@ void debug_object_destroy(void *addr, struct debug_obj_descr *descr)
                break;
        }
 out_unlock:
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
 }
 
 /**
@@ -529,7 +529,7 @@ void debug_object_free(void *addr, struct debug_obj_descr *descr)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (!obj)
@@ -539,17 +539,17 @@ void debug_object_free(void *addr, struct debug_obj_descr *descr)
        case ODEBUG_STATE_ACTIVE:
                debug_print_object(obj, "free");
                state = obj->state;
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
                debug_object_fixup(descr->fixup_free, addr, state);
                return;
        default:
                hlist_del(&obj->node);
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
                free_object(obj);
                return;
        }
 out_unlock:
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
 }
 
 #ifdef CONFIG_DEBUG_OBJECTS_FREE
@@ -575,7 +575,7 @@ static void __debug_check_no_obj_freed(const void *address, unsigned long size)
 
 repeat:
                cnt = 0;
-               spin_lock_irqsave(&db->lock, flags);
+               raw_spin_lock_irqsave(&db->lock, flags);
                hlist_for_each_entry_safe(obj, node, tmp, &db->list, node) {
                        cnt++;
                        oaddr = (unsigned long) obj->object;
@@ -587,7 +587,7 @@ repeat:
                                debug_print_object(obj, "free");
                                descr = obj->descr;
                                state = obj->state;
-                               spin_unlock_irqrestore(&db->lock, flags);
+                               raw_spin_unlock_irqrestore(&db->lock, flags);
                                debug_object_fixup(descr->fixup_free,
                                                   (void *) oaddr, state);
                                goto repeat;
@@ -597,7 +597,7 @@ repeat:
                                break;
                        }
                }
-               spin_unlock_irqrestore(&db->lock, flags);
+               raw_spin_unlock_irqrestore(&db->lock, flags);
 
                /* Now free them */
                hlist_for_each_entry_safe(obj, node, tmp, &freelist, node) {
@@ -783,7 +783,7 @@ check_results(void *addr, enum debug_obj_state state, int fixups, int warnings)
 
        db = get_bucket((unsigned long) addr);
 
-       spin_lock_irqsave(&db->lock, flags);
+       raw_spin_lock_irqsave(&db->lock, flags);
 
        obj = lookup_object(addr, db);
        if (!obj && state != ODEBUG_STATE_NONE) {
@@ -807,7 +807,7 @@ check_results(void *addr, enum debug_obj_state state, int fixups, int warnings)
        }
        res = 0;
 out:
-       spin_unlock_irqrestore(&db->lock, flags);
+       raw_spin_unlock_irqrestore(&db->lock, flags);
        if (res)
                debug_objects_enabled = 0;
        return res;
@@ -907,7 +907,7 @@ void __init debug_objects_early_init(void)
        int i;
 
        for (i = 0; i < ODEBUG_HASH_SIZE; i++)
-               spin_lock_init(&obj_hash[i].lock);
+               raw_spin_lock_init(&obj_hash[i].lock);
 
        for (i = 0; i < ODEBUG_POOL_SIZE; i++)
                hlist_add_head(&obj_static_pool[i].node, &obj_pool);