参照元†
/**
* struct ion_device - the metadata of the ion device node
* @dev: the actual misc device
* @buffers: an rb tree of all the existing buffers
* @buffer_lock: lock protecting the tree of buffers
* @lock: rwsem protecting the tree of heaps and clients
* @heaps: list of all the heaps in the system
* @user_clients: list of all the clients created from userspace
*/
struct ion_device {
struct miscdevice dev;
struct rb_root buffers;
struct mutex buffer_lock;
struct rw_semaphore lock;
struct plist_head heaps;
long (*custom_ioctl)(struct ion_client *client, unsigned int cmd,
unsigned long arg);
struct rb_root clients;
struct dentry *debug_root;
struct dentry *heaps_debug_root;
struct dentry *clients_debug_root;
};
コメント†
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