From 46ca6af145d7a9075d01126ebbd9eef805d24777 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 31 Mar 2006 02:31:17 -0800
Subject: [PATCH] --- yaml --- r: 24914 b: refs/heads/master c:
 00362e33f65f1cb5d15e62ea5509520ce2770360 h: refs/heads/master v: v3

---
 [refs]                        |  2 +-
 trunk/include/linux/hrtimer.h | 16 ++++++++++++++++
 trunk/kernel/hrtimer.c        | 19 +++++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 7c6dfd391ff8..5f5cd65be0ab 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2bfb646cdf348cb77c572f06d5b9d17ea205c7e2
+refs/heads/master: 00362e33f65f1cb5d15e62ea5509520ce2770360
diff --git a/trunk/include/linux/hrtimer.h b/trunk/include/linux/hrtimer.h
index 93830158348e..b20939287613 100644
--- a/trunk/include/linux/hrtimer.h
+++ b/trunk/include/linux/hrtimer.h
@@ -57,6 +57,19 @@ struct hrtimer {
 	struct hrtimer_base	*base;
 };
 
+/**
+ * struct hrtimer_sleeper - simple sleeper structure
+ *
+ * @timer:	embedded timer structure
+ * @task:	task to wake up
+ *
+ * task is set to NULL, when the timer expires.
+ */
+struct hrtimer_sleeper {
+	struct hrtimer timer;
+	struct task_struct *task;
+};
+
 /**
  * struct hrtimer_base - the timer base for a specific clock
  *
@@ -127,6 +140,9 @@ extern long hrtimer_nanosleep(struct timespec *rqtp,
 			      const enum hrtimer_mode mode,
 			      const clockid_t clockid);
 
+extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl,
+				 struct task_struct *tsk);
+
 /* Soft interrupt function to run the hrtimer queues: */
 extern void hrtimer_run_queues(void);
 
diff --git a/trunk/kernel/hrtimer.c b/trunk/kernel/hrtimer.c
index 0237a556eb1f..877cdf9678bf 100644
--- a/trunk/kernel/hrtimer.c
+++ b/trunk/kernel/hrtimer.c
@@ -656,6 +656,25 @@ void hrtimer_run_queues(void)
  * Sleep related functions:
  */
 
+static int hrtimer_wakeup(struct hrtimer *timer)
+{
+	struct hrtimer_sleeper *t =
+		container_of(timer, struct hrtimer_sleeper, timer);
+	struct task_struct *task = t->task;
+
+	t->task = NULL;
+	if (task)
+		wake_up_process(task);
+
+	return HRTIMER_NORESTART;
+}
+
+void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, task_t *task)
+{
+	sl->timer.function = hrtimer_wakeup;
+	sl->task = task;
+}
+
 struct sleep_hrtimer {
 	struct hrtimer timer;
 	struct task_struct *task;