diff options
Diffstat (limited to 'include/qemu/rcu.h')
| -rw-r--r-- | include/qemu/rcu.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/qemu/rcu.h b/include/qemu/rcu.h index 515d327cf1..e69efbd47f 100644 --- a/include/qemu/rcu.h +++ b/include/qemu/rcu.h @@ -27,6 +27,7 @@ #include "qemu/thread.h" #include "qemu/queue.h" #include "qemu/atomic.h" +#include "qemu/notify.h" #include "qemu/sys_membarrier.h" #ifdef __cplusplus @@ -66,6 +67,13 @@ struct rcu_reader_data { /* Data used for registry, protected by rcu_registry_lock */ QLIST_ENTRY(rcu_reader_data) node; + + /* + * NotifierList used to force an RCU grace period. Accessed under + * rcu_registry_lock. Note that the notifier is called _outside_ + * the thread! + */ + NotifierList force_rcu; }; extern __thread struct rcu_reader_data rcu_reader; @@ -180,6 +188,13 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(RCUReadAuto, rcu_read_auto_unlock) #define RCU_READ_LOCK_GUARD() \ g_autoptr(RCUReadAuto) _rcu_read_auto __attribute__((unused)) = rcu_read_auto_lock() +/* + * Force-RCU notifiers tell readers that they should exit their + * read-side critical section. + */ +void rcu_add_force_rcu_notifier(Notifier *n); +void rcu_remove_force_rcu_notifier(Notifier *n); + #ifdef __cplusplus } #endif |