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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 10:42:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 10:42:43 -0800
commitdda5f0a372873bca5f0b1d1866d7784dffd8b675 (patch)
tree1f745951b51ef9dcd127ca3c65ecb1d2ce4967c2 /include/linux/timerqueue.h
parent65b2074f84be2287e020839e93b4cdaaf60eb37c (diff)
parent88606e80da0e8d862a42ee19e5bb60b01b940ea7 (diff)
Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: MAINTAINERS: Update timer related entries timers: Use this_cpu_read timerqueue: Make timerqueue_getnext() static inline hrtimer: fix timerqueue conversion flub hrtimers: Convert hrtimers to use timerlist infrastructure timers: Fixup allmodconfig build issue timers: Rename timerlist infrastructure to timerqueue timers: Introduce timerlist infrastructure. hrtimer: Remove stale comment on curr_timer timer: Warn when del_timer_sync() is called in hardirq context timer: Del_timer_sync() can be used in softirq context timer: Make try_to_del_timer_sync() the same on SMP and UP posix-timers: Annotate lock_timer() timer: Permit statically-declared work with deferrable timers time: Use ARRAY_SIZE macro in timecompare.c timer: Initialize the field slack of timer_list timer_list: Remove alignment padding on 64 bit when CONFIG_TIMER_STATS time: Compensate for rounding on odd-frequency clocksources Fix up trivial conflict in MAINTAINERS
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 00000000000..d24aabaca47
--- /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 */