diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-20 00:45:08 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-20 00:45:08 (GMT) |
commit | 78c4def67e8eebe602655a3dec9aa08f0e2f7c4b (patch) | |
tree | 8c0c756bbff7325f5c2a773f8cc64d8390ebe5b5 /include | |
parent | 7e6628e4bcb3b3546c625ec63ca724f28ab14f0c (diff) | |
parent | 942c3c5c329274fa6de5998cb911cf3d0a42d0b1 (diff) | |
download | linux-78c4def67e8eebe602655a3dec9aa08f0e2f7c4b.tar.xz |
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')
-rw-r--r-- | include/linux/alarmtimer.h | 40 | ||||
-rw-r--r-- | include/linux/capability.h | 7 | ||||
-rw-r--r-- | include/linux/posix-timers.h | 2 | ||||
-rw-r--r-- | include/linux/rbtree.h | 8 | ||||
-rw-r--r-- | include/linux/time.h | 3 | ||||
-rw-r--r-- | include/linux/timerqueue.h | 2 |
6 files changed, 60 insertions, 2 deletions
diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h new file mode 100644 index 0000000..c5d6095 --- /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 d4675af..4554db0 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 d51243a..808227d 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 7066acb..033b507 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 454a262..b306178 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 a520fd7..5088727 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) |