diff options
| -rw-r--r-- | drivers/s390/crypto/pkey_base.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/crypto/pkey_base.c b/drivers/s390/crypto/pkey_base.c index d60cd987c16d..c5677e1e110a 100644 --- a/drivers/s390/crypto/pkey_base.c +++ b/drivers/s390/crypto/pkey_base.c @@ -60,6 +60,13 @@ int pkey_handler_register(struct pkey_handler *handler) list_add_rcu(&handler->list, &handler_list); spin_unlock(&handler_list_write_lock); + /* + * Fast path to push the info about the updated list to the other + * CPUs. If removed, the other CPUs may get the updated list when the + * RCU context is synched. As this code is in general not performance + * critical and the list update mostly only occurs at the early time in + * system startup the focus is on concurrency versus performance. + */ synchronize_rcu(); module_put(handler->module); |