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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-19 17:45:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-19 17:45:08 -0700
commit78c4def67e8eebe602655a3dec9aa08f0e2f7c4b (patch)
tree8c0c756bbff7325f5c2a773f8cc64d8390ebe5b5 /include/linux
parent7e6628e4bcb3b3546c625ec63ca724f28ab14f0c (diff)
parent942c3c5c329274fa6de5998cb911cf3d0a42d0b1 (diff)
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimer: Make lookup table const RTC: Disable CONFIG_RTC_CLASS from being built as a module timers: Fix alarmtimer build issues when CONFIG_RTC_CLASS=n timers: Remove delayed irqwork from alarmtimers implementation timers: Improve alarmtimer comments and minor fixes timers: Posix interface for alarm-timers timers: Introduce in-kernel alarm-timer interface timers: Add rb_init_node() to allow for stack allocated rb nodes time: Add timekeeping_inject_sleeptime
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/alarmtimer.h40
-rw-r--r--include/linux/capability.h7
-rw-r--r--include/linux/posix-timers.h2
-rw-r--r--include/linux/rbtree.h8
-rw-r--r--include/linux/time.h3
-rw-r--r--include/linux/timerqueue.h2
6 files changed, 60 insertions, 2 deletions
diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h
new file mode 100644
index 00000000000..c5d6095b46f
--- /dev/null
+++ b/include/linux/alarmtimer.h
@@ -0,0 +1,40 @@
+#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,
+};
+
+/**
+ * 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;
+ ktime_t period;
+ void (*function)(struct alarm *);
+ enum alarmtimer_type type;
+ bool enabled;
+ void *data;
+};
+
+void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
+ void (*function)(struct alarm *));
+void alarm_start(struct alarm *alarm, ktime_t start, ktime_t period);
+void alarm_cancel(struct alarm *alarm);
+
+#endif
diff --git a/include/linux/capability.h b/include/linux/capability.h
index d4675af963f..4554db0cde8 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -355,7 +355,12 @@ struct cpu_vfs_cap_data {
#define CAP_SYSLOG 34
-#define CAP_LAST_CAP CAP_SYSLOG
+/* Allow triggering something that will wake the system */
+
+#define CAP_WAKE_ALARM 35
+
+
+#define CAP_LAST_CAP CAP_WAKE_ALARM
#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index d51243ae072..808227d40a6 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/timex.h>
+#include <linux/alarmtimer.h>
union cpu_time_count {
cputime_t cpu;
@@ -80,6 +81,7 @@ struct k_itimer {
unsigned long incr;
unsigned long expires;
} mmtimer;
+ struct alarm alarmtimer;
} it;
};
diff --git a/include/linux/rbtree.h b/include/linux/rbtree.h
index 7066acb2c53..033b507b33b 100644
--- a/include/linux/rbtree.h
+++ b/include/linux/rbtree.h
@@ -136,6 +136,14 @@ static inline void rb_set_color(struct rb_node *rb, int color)
#define RB_EMPTY_NODE(node) (rb_parent(node) == node)
#define RB_CLEAR_NODE(node) (rb_set_parent(node, node))
+static inline void rb_init_node(struct rb_node *rb)
+{
+ rb->rb_parent_color = 0;
+ rb->rb_right = NULL;
+ rb->rb_left = NULL;
+ RB_CLEAR_NODE(rb);
+}
+
extern void rb_insert_color(struct rb_node *, struct rb_root *);
extern void rb_erase(struct rb_node *, struct rb_root *);
diff --git a/include/linux/time.h b/include/linux/time.h
index 454a2620578..b3061782dec 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -126,6 +126,7 @@ struct timespec __current_kernel_time(void); /* does not take xtime_lock */
struct timespec get_monotonic_coarse(void);
void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
struct timespec *wtom, struct timespec *sleep);
+void timekeeping_inject_sleeptime(struct timespec *delta);
#define CURRENT_TIME (current_kernel_time())
#define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 })
@@ -294,6 +295,8 @@ struct itimerval {
#define CLOCK_REALTIME_COARSE 5
#define CLOCK_MONOTONIC_COARSE 6
#define CLOCK_BOOTTIME 7
+#define CLOCK_REALTIME_ALARM 8
+#define CLOCK_BOOTTIME_ALARM 9
/*
* The IDs of various hardware clocks:
diff --git a/include/linux/timerqueue.h b/include/linux/timerqueue.h
index a520fd70a59..5088727478f 100644
--- a/include/linux/timerqueue.h
+++ b/include/linux/timerqueue.h
@@ -39,7 +39,7 @@ struct timerqueue_node *timerqueue_getnext(struct timerqueue_head *head)
static inline void timerqueue_init(struct timerqueue_node *node)
{
- RB_CLEAR_NODE(&node->node);
+ rb_init_node(&node->node);
}
static inline void timerqueue_init_head(struct timerqueue_head *head)