Changeset 268 for ksyslog/trunk/compat.h

Timestamp:

05/03/14 04:14:58 (10 years ago)

Author:

atzm

Message:

optimize workqueues

File:

• ksyslog/trunk/compat.h (modified) (1 diff)

ksyslog/trunk/compat.h

@@ -13 +13 @@
                 pos != (head); \
                 pos = rcu_dereference_raw(list_next_rcu(pos)))
+#endif
+
+#ifndef list_first_or_null_rcu
+#define list_first_or_null_rcu(ptr, type, member) \
+({ \
+        struct list_head *__ptr = (ptr); \
+        struct list_head *__next = ACCESS_ONCE(__ptr->next); \
+        likely(__ptr != __next) ? list_entry_rcu(__next, type, member) : NULL; \
+ })
 #endif