Merge git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt

[linux-2.6-omap-h63xx.git] / include / asm-sparc64 / mdesc.h

diff --git a/include/asm-sparc64/mdesc.h b/include/asm-sparc64/mdesc.h
index bbb0c0bed486051527a26ee5f75b5ed6707c6259..1acc7272e537bca1bfe095ea24e518b32d837a9b 100644 (file)
--- a/include/asm-sparc64/mdesc.h
+++ b/include/asm-sparc64/mdesc.h
@@ -2,6 +2,7 @@
 #define _SPARC64_MDESC_H
 
 #include <linux/types.h>
+#include <linux/cpumask.h>
 #include <asm/prom.h>
 
 struct mdesc_handle;
@@ -23,8 +24,28 @@ extern u64 mdesc_node_by_name(struct mdesc_handle *handle,
             (__node) != MDESC_NODE_NULL; \
             __node = mdesc_node_by_name(__hdl, __node, __name))
 
+/* Access to property values returned from mdesc_get_property() are
+ * only valid inside of a mdesc_grab()/mdesc_release() sequence.
+ * Once mdesc_release() is called, the memory backed up by these
+ * pointers may reference freed up memory.
+ *
+ * Therefore callers must make copies of any property values
+ * they need.
+ *
+ * These same rules apply to mdesc_node_name().
+ */
 extern const void *mdesc_get_property(struct mdesc_handle *handle,
                                      u64 node, const char *name, int *lenp);
+extern const char *mdesc_node_name(struct mdesc_handle *hp, u64 node);
+
+/* MD arc iteration, the standard sequence is:
+ *
+ *     unsigned long arc;
+ *     mdesc_for_each_arc(arc, handle, node, MDESC_ARC_TYPE_{FWD,BACK}) {
+ *             unsigned long target = mdesc_arc_target(handle, arc);
+ *             ...
+ *     }
+ */
 
 #define MDESC_ARC_TYPE_FWD     "fwd"
 #define MDESC_ARC_TYPE_BACK    "back"
@@ -38,10 +59,20 @@ extern u64 mdesc_next_arc(struct mdesc_handle *handle, u64 from,
 
 extern u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc);
 
-extern const char *mdesc_node_name(struct mdesc_handle *hp, u64 node);
-
 extern void mdesc_update(void);
 
+struct mdesc_notifier_client {
+       void (*add)(struct mdesc_handle *handle, u64 node);
+       void (*remove)(struct mdesc_handle *handle, u64 node);
+
+       const char                      *node_name;
+       struct mdesc_notifier_client    *next;
+};
+
+extern void mdesc_register_notifier(struct mdesc_notifier_client *client);
+
+extern void mdesc_fill_in_cpu_data(cpumask_t mask);
+
 extern void sun4v_mdesc_init(void);
 
 #endif