common/siano/smsdvb-debugfs.c

34 static void smsdvb_print_dvb_stats(struct smsdvb_debugfs *debug_data,
40 	spin_lock(&debug_data->lock);
41 	if (debug_data->stats_count) {
42 		spin_unlock(&debug_data->lock);
46 	buf = debug_data->stats_data;
91 	debug_data->stats_count = n;
92 	spin_unlock(&debug_data->lock);
93 	wake_up(&debug_data->stats_queue);
96 static void smsdvb_print_isdb_stats(struct smsdvb_debugfs *debug_data,
102 	spin_lock(&debug_data->lock);
103 	if (debug_data->stats_count) {
104 		spin_unlock(&debug_data->lock);
108 	buf = debug_data->stats_data;
155 	debug_data->stats_count = n;
156 	spin_unlock(&debug_data->lock);
157 	wake_up(&debug_data->stats_queue);
160 static void smsdvb_print_isdb_stats_ex(struct smsdvb_debugfs *debug_data,
166 	spin_lock(&debug_data->lock);
167 	if (debug_data->stats_count) {
168 		spin_unlock(&debug_data->lock);
172 	buf = debug_data->stats_data;
221 	debug_data->stats_count = n;
222 	spin_unlock(&debug_data->lock);
224 	wake_up(&debug_data->stats_queue);
230 	struct smsdvb_debugfs *debug_data = client->debug_data;
232 	kref_get(&debug_data->refcount);
234 	spin_lock(&debug_data->lock);
235 	debug_data->stats_count = 0;
236 	debug_data->stats_was_read = false;
237 	spin_unlock(&debug_data->lock);
239 	file->private_data = debug_data;
246 	struct smsdvb_debugfs *debug_data;
248 	debug_data = container_of(ref, struct smsdvb_debugfs, refcount);
249 	kfree(debug_data);
252 static int smsdvb_stats_wait_read(struct smsdvb_debugfs *debug_data)
256 	spin_lock(&debug_data->lock);
258 	if (debug_data->stats_was_read)
261 	rc = debug_data->stats_count;
264 	spin_unlock(&debug_data->lock);
270 	struct smsdvb_debugfs *debug_data = file->private_data;
273 	kref_get(&debug_data->refcount);
275 	poll_wait(file, &debug_data->stats_queue, wait);
277 	rc = smsdvb_stats_wait_read(debug_data);
278 	kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
287 	struct smsdvb_debugfs *debug_data = file->private_data;
289 	kref_get(&debug_data->refcount);
292 		rc = smsdvb_stats_wait_read(debug_data);
298 		rc = wait_event_interruptible(debug_data->stats_queue,
299 				      smsdvb_stats_wait_read(debug_data));
304 	if (debug_data->stats_was_read) {
309 	len = debug_data->stats_count - *ppos;
312 					     debug_data->stats_data, len);
316 	if (*ppos >= debug_data->stats_count) {
317 		spin_lock(&debug_data->lock);
318 		debug_data->stats_was_read = true;
319 		spin_unlock(&debug_data->lock);
322 	kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
328 	struct smsdvb_debugfs *debug_data = file->private_data;
330 	spin_lock(&debug_data->lock);
331 	debug_data->stats_was_read = true;	/* return EOF to read() */
332 	spin_unlock(&debug_data->lock);
333 	wake_up_interruptible_sync(&debug_data->stats_queue);
335 	kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
356 	struct smsdvb_debugfs *debug_data;
361 	debug_data = kzalloc(sizeof(*client->debug_data), GFP_KERNEL);
362 	if (!debug_data)
371 	client->debug_data        = debug_data;
376 	init_waitqueue_head(&debug_data->stats_queue);
377 	spin_lock_init(&debug_data->lock);
378 	kref_init(&debug_data->refcount);
393 	kref_put(&client->debug_data->refcount, smsdvb_debugfs_data_release);
395 	client->debug_data = NULL;