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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/linux/alarmtimer.h
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/linux/alarmtimer.h')
-rw-r--r--kernel/include/linux/alarmtimer.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/kernel/include/linux/alarmtimer.h b/kernel/include/linux/alarmtimer.h
new file mode 100644
index 000000000..a899402a5
--- /dev/null
+++ b/kernel/include/linux/alarmtimer.h
@@ -0,0 +1,59 @@
+#ifndef _LINUX_ALARMTIMER_H
+#define _LINUX_ALARMTIMER_H
+
+#include <linux/time.h>
+#include <linux/hrtimer.h>
+#include <linux/timerqueue.h>
+#include <linux/rtc.h>
+
+enum alarmtimer_type {
+ ALARM_REALTIME,
+ ALARM_BOOTTIME,
+
+ ALARM_NUMTYPE,
+};
+
+enum alarmtimer_restart {
+ ALARMTIMER_NORESTART,
+ ALARMTIMER_RESTART,
+};
+
+
+#define ALARMTIMER_STATE_INACTIVE 0x00
+#define ALARMTIMER_STATE_ENQUEUED 0x01
+
+/**
+ * struct alarm - Alarm timer structure
+ * @node: timerqueue node for adding to the event list this value
+ * also includes the expiration time.
+ * @period: Period for recuring alarms
+ * @function: Function pointer to be executed when the timer fires.
+ * @type: Alarm type (BOOTTIME/REALTIME)
+ * @enabled: Flag that represents if the alarm is set to fire or not
+ * @data: Internal data value.
+ */
+struct alarm {
+ struct timerqueue_node node;
+ struct hrtimer timer;
+ enum alarmtimer_restart (*function)(struct alarm *, ktime_t now);
+ enum alarmtimer_type type;
+ int state;
+ void *data;
+};
+
+void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
+ enum alarmtimer_restart (*function)(struct alarm *, ktime_t));
+int alarm_start(struct alarm *alarm, ktime_t start);
+int alarm_start_relative(struct alarm *alarm, ktime_t start);
+void alarm_restart(struct alarm *alarm);
+int alarm_try_to_cancel(struct alarm *alarm);
+int alarm_cancel(struct alarm *alarm);
+
+u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval);
+u64 alarm_forward_now(struct alarm *alarm, ktime_t interval);
+ktime_t alarm_expires_remaining(const struct alarm *alarm);
+
+/* Provide way to access the rtc device being used by alarmtimers */
+struct rtc_device *alarmtimer_get_rtcdev(void);
+
+#endif