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Merge branches 'timers/clocksource', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/debug' into v28-timers-for-linus

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This commit is contained in:
Thomas Gleixner
2008-10-20 13:14:06 +02:00
parent 2d42244ae7 1b02469088 fb02fbc14d d40e944c25 1508487e7f 322acf6585
commit c465a76af6
7294 changed files with 573900 additions and 183853 deletions
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28
include/linux/hrtimer.h
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@@ -47,14 +47,22 @@ enum hrtimer_restart {
* HRTIMER_CB_IRQSAFE: Callback may run in hardirq context
* HRTIMER_CB_IRQSAFE_NO_RESTART: Callback may run in hardirq context and
* does not restart the timer
* HRTIMER_CB_IRQSAFE_NO_SOFTIRQ: Callback must run in hardirq context
* Special mode for tick emultation
* HRTIMER_CB_IRQSAFE_PERCPU: Callback must run in hardirq context
* Special mode for tick emulation and
* scheduler timer. Such timers are per
* cpu and not allowed to be migrated on
* cpu unplug.
* HRTIMER_CB_IRQSAFE_UNLOCKED: Callback should run in hardirq context
* with timer->base lock unlocked
* used for timers which call wakeup to
* avoid lock order problems with rq->lock
*/
enum hrtimer_cb_mode {
HRTIMER_CB_SOFTIRQ,
HRTIMER_CB_IRQSAFE,
HRTIMER_CB_IRQSAFE_NO_RESTART,
HRTIMER_CB_IRQSAFE_NO_SOFTIRQ,
HRTIMER_CB_IRQSAFE_PERCPU,
HRTIMER_CB_IRQSAFE_UNLOCKED,
};
/*
@@ -67,9 +75,10 @@ enum hrtimer_cb_mode {
* 0x02 callback function running
* 0x04 callback pending (high resolution mode)
*
* Special case:
* Special cases:
* 0x03 callback function running and enqueued
* (was requeued on another CPU)
* 0x09 timer was migrated on CPU hotunplug
* The "callback function running and enqueued" status is only possible on
* SMP. It happens for example when a posix timer expired and the callback
* queued a signal. Between dropping the lock which protects the posix timer
@@ -87,6 +96,7 @@ enum hrtimer_cb_mode {
#define HRTIMER_STATE_ENQUEUED 0x01
#define HRTIMER_STATE_CALLBACK 0x02
#define HRTIMER_STATE_PENDING 0x04
#define HRTIMER_STATE_MIGRATE 0x08
/**
* struct hrtimer - the basic hrtimer structure
@@ -115,12 +125,12 @@ struct hrtimer {
enum hrtimer_restart (*function)(struct hrtimer *);
struct hrtimer_clock_base *base;
unsigned long state;
enum hrtimer_cb_mode cb_mode;
struct list_head cb_entry;
enum hrtimer_cb_mode cb_mode;
#ifdef CONFIG_TIMER_STATS
int start_pid;
void *start_site;
char start_comm[16];
int start_pid;
#endif
};
@@ -145,10 +155,8 @@ struct hrtimer_sleeper {
* @first: pointer to the timer node which expires first
* @resolution: the resolution of the clock, in nanoseconds
* @get_time: function to retrieve the current time of the clock
* @get_softirq_time: function to retrieve the current time from the softirq
* @softirq_time: the time when running the hrtimer queue in the softirq
* @offset: offset of this clock to the monotonic base
* @reprogram: function to reprogram the timer event
*/
struct hrtimer_clock_base {
struct hrtimer_cpu_base *cpu_base;
@@ -157,13 +165,9 @@ struct hrtimer_clock_base {
struct rb_node *first;
ktime_t resolution;
ktime_t (*get_time)(void);
ktime_t (*get_softirq_time)(void);
ktime_t softirq_time;
#ifdef CONFIG_HIGH_RES_TIMERS
ktime_t offset;
int (*reprogram)(struct hrtimer *t,
struct hrtimer_clock_base *b,
ktime_t n);
#endif
};