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authorIngo Molnar <mingo@elte.hu>2011-02-14 11:55:18 +0100
committerIngo Molnar <mingo@elte.hu>2011-02-14 11:55:18 +0100
commitd2137d5af4259f50c19addb8246a186c9ffac325 (patch)
tree2f7e309f9cf8ef2f2698532c226edda38021fe69 /include/linux/timerqueue.h
parentf005fe12b90c5b9fe180a09209a893e09affa8aa (diff)
parent795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 (diff)
Merge branch 'linus' into x86/bootmem
Conflicts: arch/x86/mm/numa_64.c Merge reason: fix the conflict, update to latest -rc and pick up this dependent fix from Yinghai: e6d2e2b2b1e1: memblock: don't adjust size in memblock_find_base() Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/timerqueue.h')
-rw-r--r--include/linux/timerqueue.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h
new file mode 100644
index 000000000000..d24aabaca474
--- /dev/null
+++ b/include/linux/timerqueue.h
@@ -0,0 +1,50 @@
+#ifndef _LINUX_TIMERQUEUE_H
+#define _LINUX_TIMERQUEUE_H
+
+#include <linux/rbtree.h>
+#include <linux/ktime.h>
+
+
+struct timerqueue_node {
+ struct rb_node node;
+ ktime_t expires;
+};
+
+struct timerqueue_head {
+ struct rb_root head;
+ struct timerqueue_node *next;
+};
+
+
+extern void timerqueue_add(struct timerqueue_head *head,
+ struct timerqueue_node *node);
+extern void timerqueue_del(struct timerqueue_head *head,
+ struct timerqueue_node *node);
+extern struct timerqueue_node *timerqueue_iterate_next(
+ struct timerqueue_node *node);
+
+/**
+ * timerqueue_getnext - Returns the timer with the earlies expiration time
+ *
+ * @head: head of timerqueue
+ *
+ * Returns a pointer to the timer node that has the
+ * earliest expiration time.
+ */
+static inline
+struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head)
+{
+ return head->next;
+}
+
+static inline void timerqueue_init(struct timerqueue_node *node)
+{
+ RB_CLEAR_NODE(&node->node);
+}
+
+static inline void timerqueue_init_head(struct timerqueue_head *head)
+{
+ head->head = RB_ROOT;
+ head->next = NULL;
+}
+#endif /* _LINUX_TIMERQUEUE_H */