Changeset 679 for GPL/trunk/include/linux/notifier.h

Timestamp:

Mar 18, 2021, 8:57:36 PM (4 years ago)

Author:

David Azarewicz

Message:

Merge changes from Paul's uniaud32next branch.

Location:

GPL/trunk

Files:

• . (modified) (1 prop)
• include/linux/notifier.h (modified) (3 diffs)

GPL/trunk/include/linux/notifier.h

@@ -11 +11 @@
 #define _LINUX_NOTIFIER_H
 #include <linux/errno.h>
+#include <linux/rwsem.h>
+
+typedef int (*notifier_fn_t)(struct notifier_block *nb,
+                        unsigned long action, void *data);
 
 struct notifier_block
@@ -18 +22 @@
         int priority;
 };
+
+struct atomic_notifier_head {
+        spinlock_t lock;
+        struct notifier_block *head;
+};
+
+struct blocking_notifier_head {
+        struct semaphore rwsem;
+        struct notifier_block *head;
+};
+
 
 
@@ -113 +128 @@
  
 #endif
+#define BLOCKING_INIT_NOTIFIER_HEAD(name) do {  \
+                init_rwsem(&(name)->rwsem);     \
+                (name)->head = NULL;            \
+        } while (0)
 #endif