static int ttm_dma_pool_mm_shrink(struct shrinker *shrink,
struct shrink_control *sc)
{
- static atomic_t start_pool = ATOMIC_INIT(0);
+ static unsigned start_pool;
unsigned idx = 0;
- unsigned pool_offset = atomic_add_return(1, &start_pool);
+ unsigned pool_offset;
unsigned shrink_pages = sc->nr_to_scan;
struct device_pools *p;
return 0;
mutex_lock(&_manager->lock);
- pool_offset = pool_offset % _manager->npools;
+ if (!_manager->npools)
+ goto out;
+ pool_offset = ++start_pool % _manager->npools;
list_for_each_entry(p, &_manager->pools, pools) {
unsigned nr_free;
p->pool->dev_name, p->pool->name, current->pid,
nr_free, shrink_pages);
}
+out:
mutex_unlock(&_manager->lock);
/* return estimated number of unused pages in pool */
return ttm_dma_pool_get_num_unused_pages();
_manager = kzalloc(sizeof(*_manager), GFP_KERNEL);
if (!_manager)
- goto err_manager;
+ goto err;
mutex_init(&_manager->lock);
INIT_LIST_HEAD(&_manager->pools);
}
ttm_dma_pool_mm_shrink_init(_manager);
return 0;
-err_manager:
- kfree(_manager);
- _manager = NULL;
err:
return ret;
}