31  * Big reader spinlocks provide cache-local contention-free read
38  * of larger reader objects due to necessary linkage overhead. In
88 	/* The reader list is protected under the writer br. */  in ck_brlock_write_lock()
142 ck_brlock_read_register(struct ck_brlock *br, struct ck_brlock_reader *reader)  in ck_brlock_read_register()  argument
145 	reader->n_readers = 0;  in ck_brlock_read_register()
146 	reader->previous = NULL;  in ck_brlock_read_register()
151 	reader->next = ck_pr_load_ptr(&br->readers);  in ck_brlock_read_register()
152 	if (reader->next != NULL)  in ck_brlock_read_register()
153 		reader->next->previous = reader;  in ck_brlock_read_register()
154 	ck_pr_store_ptr(&br->readers, reader);  in ck_brlock_read_register()
161 ck_brlock_read_unregister(struct ck_brlock *br, struct ck_brlock_reader *reader)  in ck_brlock_read_unregister()  argument
166 	if (reader->next != NULL)  in ck_brlock_read_unregister()
167 		reader->next->previous = reader->previous;  in ck_brlock_read_unregister()
169 	if (reader->previous != NULL)  in ck_brlock_read_unregister()
170 		reader->previous->next = reader->next;  in ck_brlock_read_unregister()
172 		br->readers = reader->next;  in ck_brlock_read_unregister()
179 ck_brlock_read_lock(struct ck_brlock *br, struct ck_brlock_reader *reader)  in ck_brlock_read_lock()  argument
182 	if (reader->n_readers >= 1) {  in ck_brlock_read_lock()
183 		ck_pr_store_uint(&reader->n_readers, reader->n_readers + 1);  in ck_brlock_read_lock()
192 		ck_pr_fas_uint(&reader->n_readers, 1);  in ck_brlock_read_lock()
195 		 * Serialize reader counter update with respect to load of  in ck_brlock_read_lock()
200 		ck_pr_store_uint(&reader->n_readers, 1);  in ck_brlock_read_lock()
203 		 * Serialize reader counter update with respect to load of  in ck_brlock_read_lock()
212 		ck_pr_store_uint(&reader->n_readers, 0);  in ck_brlock_read_lock()
221 		       struct ck_brlock_reader *reader,  in ck_brlock_read_trylock()  argument
226 	if (reader->n_readers >= 1) {  in ck_brlock_read_trylock()
227 		ck_pr_store_uint(&reader->n_readers, reader->n_readers + 1);  in ck_brlock_read_trylock()
240 		ck_pr_fas_uint(&reader->n_readers, 1);  in ck_brlock_read_trylock()
243 		 * Serialize reader counter update with respect to load of  in ck_brlock_read_trylock()
248 		ck_pr_store_uint(&reader->n_readers, 1);  in ck_brlock_read_trylock()
251 		 * Serialize reader counter update with respect to load of  in ck_brlock_read_trylock()
260 		ck_pr_store_uint(&reader->n_readers, 0);  in ck_brlock_read_trylock()
271 ck_brlock_read_unlock(struct ck_brlock_reader *reader)  in ck_brlock_read_unlock()  argument
275 	ck_pr_store_uint(&reader->n_readers, reader->n_readers - 1);  in ck_brlock_read_unlock()