| #ifndef __BACKPORT_LINUX_RCUPDATE_H |
| #define __BACKPORT_LINUX_RCUPDATE_H |
| #include_next <linux/rcupdate.h> |
| |
| /* |
| * This adds a nested function everywhere kfree_rcu() was called. This |
| * function frees the memory and is given as a function to call_rcu(). |
| * The rcu callback could happen every time also after the module was |
| * unloaded and this will cause problems. To address that problem, we |
| * put rcu_barrier() into each module_exit() in module.h. |
| */ |
| #if !defined(kfree_rcu) |
| #define kfree_rcu(data, rcuhead) do { \ |
| void __kfree_rcu_fn(struct rcu_head *rcu_head) \ |
| { \ |
| void *___ptr; \ |
| ___ptr = container_of(rcu_head, typeof(*(data)), rcuhead);\ |
| kfree(___ptr); \ |
| } \ |
| call_rcu(&(data)->rcuhead, __kfree_rcu_fn); \ |
| } while (0) |
| #endif |
| |
| #ifndef RCU_INIT_POINTER |
| #define RCU_INIT_POINTER(p, v) \ |
| p = (typeof(*v) __force __rcu *)(v) |
| #endif |
| |
| #ifndef rcu_dereference_check |
| #define rcu_dereference_check(p, c) rcu_dereference(p) |
| #endif |
| |
| #ifndef rcu_dereference_protected |
| #define rcu_dereference_protected(p, c) (p) |
| #endif |
| #ifndef rcu_access_pointer |
| #define rcu_access_pointer(p) ACCESS_ONCE(p) |
| #endif |
| |
| #ifndef rcu_dereference_raw |
| #define rcu_dereference_raw(p) rcu_dereference(p) |
| #endif |
| |
| #endif /* __BACKPORT_LINUX_RCUPDATE_H */ |