[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / posix-timers.h

#ifndef _linux_POSIX_TIMERS_H
#define _linux_POSIX_TIMERS_H

#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/sched.h>

union cpu_time_count {
	cputime_t cpu;
	unsigned long long sched;
};

struct cpu_timer_list {
	struct list_head entry;
	union cpu_time_count expires, incr;
	struct task_struct *task;
	int firing;
};

#define CPUCLOCK_PID(clock)		((pid_t) ~((clock) >> 3))
#define CPUCLOCK_PERTHREAD(clock) \
	(((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
#define CPUCLOCK_PID_MASK	7
#define CPUCLOCK_PERTHREAD_MASK	4
#define CPUCLOCK_WHICH(clock)	((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
#define CPUCLOCK_CLOCK_MASK	3
#define CPUCLOCK_PROF		0
#define CPUCLOCK_VIRT		1
#define CPUCLOCK_SCHED		2
#define CPUCLOCK_MAX		3

#define MAKE_PROCESS_CPUCLOCK(pid, clock) \
	((~(clockid_t) (pid) << 3) | (clockid_t) (clock))
#define MAKE_THREAD_CPUCLOCK(tid, clock) \
	MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK)

/* POSIX.1b interval timer structure. */
struct k_itimer {
	struct list_head list;		/* free/ allocate list */
	spinlock_t it_lock;
	clockid_t it_clock;		/* which timer type */
	timer_t it_id;			/* timer id */
	int it_overrun;			/* overrun on pending signal  */
	int it_overrun_last;		/* overrun on last delivered signal */
	int it_requeue_pending;		/* waiting to requeue this timer */
#define REQUEUE_PENDING 1
	int it_sigev_notify;		/* notify word of sigevent struct */
	struct task_struct *it_process;	/* process to send signal to */
	struct sigqueue *sigq;		/* signal queue entry. */
	union {
		struct {
			struct hrtimer timer;
			ktime_t interval;
		} real;
		struct cpu_timer_list cpu;
		struct {
			unsigned int clock;
			unsigned int node;
			unsigned long incr;
			unsigned long expires;
		} mmtimer;
	} it;
};

struct k_clock {
	int res;		/* in nanoseconds */
	int (*clock_getres) (const clockid_t which_clock, struct timespec *tp);
	int (*clock_set) (const clockid_t which_clock, struct timespec * tp);
	int (*clock_get) (const clockid_t which_clock, struct timespec * tp);
	int (*timer_create) (struct k_itimer *timer);
	int (*nsleep) (const clockid_t which_clock, int flags,
		       struct timespec *, struct timespec __user *);
	long (*nsleep_restart) (struct restart_block *restart_block);
	int (*timer_set) (struct k_itimer * timr, int flags,
			  struct itimerspec * new_setting,
			  struct itimerspec * old_setting);
	int (*timer_del) (struct k_itimer * timr);
#define TIMER_RETRY 1
	void (*timer_get) (struct k_itimer * timr,
			   struct itimerspec * cur_setting);
};

void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);

/* error handlers for timer_create, nanosleep and settime */
int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *,
			       struct timespec __user *);
int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);

/* function to call to trigger timer event */
int posix_timer_event(struct k_itimer *timr, int si_private);

int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
int posix_cpu_timer_create(struct k_itimer *timer);
int posix_cpu_nsleep(const clockid_t which_clock, int flags,
		     struct timespec *rqtp, struct timespec __user *rmtp);
long posix_cpu_nsleep_restart(struct restart_block *restart_block);
int posix_cpu_timer_set(struct k_itimer *timer, int flags,
			struct itimerspec *new, struct itimerspec *old);
int posix_cpu_timer_del(struct k_itimer *timer);
void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp);

void posix_cpu_timer_schedule(struct k_itimer *timer);

void run_posix_cpu_timers(struct task_struct *task);
void posix_cpu_timers_exit(struct task_struct *task);
void posix_cpu_timers_exit_group(struct task_struct *task);

void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
			   cputime_t *newval, cputime_t *oldval);

long clock_nanosleep_restart(struct restart_block *restart_block);

void update_rlimit_cpu(unsigned long rlim_new);

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _linux_POSIX_TIMERS_H
	2	#define _linux_POSIX_TIMERS_H
	3
	4	#include <linux/spinlock.h>
	5	#include <linux/list.h>
	6	#include <linux/sched.h>
	7
	8	union cpu_time_count {
	9	cputime_t cpu;
	10	unsigned long long sched;
	11	};
	12
	13	struct cpu_timer_list {
	14	struct list_head entry;
	15	union cpu_time_count expires, incr;
	16	struct task_struct *task;
	17	int firing;
	18	};
	19
	20	#define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3))
	21	#define CPUCLOCK_PERTHREAD(clock) \
	22	(((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0)
	23	#define CPUCLOCK_PID_MASK 7
	24	#define CPUCLOCK_PERTHREAD_MASK 4
	25	#define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK)
	26	#define CPUCLOCK_CLOCK_MASK 3
	27	#define CPUCLOCK_PROF 0
	28	#define CPUCLOCK_VIRT 1
	29	#define CPUCLOCK_SCHED 2
	30	#define CPUCLOCK_MAX 3
	31
	32	#define MAKE_PROCESS_CPUCLOCK(pid, clock) \
	33	((~(clockid_t) (pid) << 3) \| (clockid_t) (clock))
	34	#define MAKE_THREAD_CPUCLOCK(tid, clock) \
	35	MAKE_PROCESS_CPUCLOCK((tid), (clock) \| CPUCLOCK_PERTHREAD_MASK)
	36
	37	/* POSIX.1b interval timer structure. */
	38	struct k_itimer {
	39	struct list_head list; /* free/ allocate list */
	40	spinlock_t it_lock;
	41	clockid_t it_clock; /* which timer type */
	42	timer_t it_id; /* timer id */
	43	int it_overrun; /* overrun on pending signal */
	44	int it_overrun_last; /* overrun on last delivered signal */
2a698971	45	int it_requeue_pending; /* waiting to requeue this timer */
1da177e4 LT	46	#define REQUEUE_PENDING 1
1da177e4 LT	47	int it_sigev_notify; /* notify word of sigevent struct */
1da177e4 LT	48	struct task_struct it_process; / process to send signal to */
	49	struct sigqueue sigq; / signal queue entry. */
	50	union {
	51	struct {
becf8b5d TG	52	struct hrtimer timer;
becf8b5d TG	53	ktime_t interval;
1da177e4 LT	54	} real;
	55	struct cpu_timer_list cpu;
	56	struct {
	57	unsigned int clock;
	58	unsigned int node;
	59	unsigned long incr;
	60	unsigned long expires;
	61	} mmtimer;
	62	} it;
	63	};
	64
1da177e4	65	struct k_clock {
2a698971	66	int res; /* in nanoseconds */
a924b04d	67	int (clock_getres) (const clockid_t which_clock, struct timespec tp);
a924b04d TG	68	int (clock_set) (const clockid_t which_clock, struct timespec tp);
a924b04d TG	69	int (clock_get) (const clockid_t which_clock, struct timespec tp);
1da177e4	70	int (timer_create) (struct k_itimer timer);
2a698971	71	int (*nsleep) (const clockid_t which_clock, int flags,
97735f25	72	struct timespec , struct timespec __user );
1711ef38	73	long (nsleep_restart) (struct restart_block restart_block);
1da177e4 LT	74	int (timer_set) (struct k_itimer timr, int flags,
	75	struct itimerspec * new_setting,
	76	struct itimerspec * old_setting);
	77	int (timer_del) (struct k_itimer timr);
	78	#define TIMER_RETRY 1
	79	void (timer_get) (struct k_itimer timr,
	80	struct itimerspec * cur_setting);
	81	};
	82
a924b04d	83	void register_posix_clock(const clockid_t clock_id, struct k_clock *new_clock);
1da177e4	84
2a698971	85	/* error handlers for timer_create, nanosleep and settime */
97735f25 TG	86	int do_posix_clock_nonanosleep(const clockid_t, int flags, struct timespec *,
97735f25 TG	87	struct timespec __user *);
a924b04d	88	int do_posix_clock_nosettime(const clockid_t, struct timespec *tp);
1da177e4 LT	89
	90	/* function to call to trigger timer event */
	91	int posix_timer_event(struct k_itimer *timr, int si_private);
	92
2a698971 TG	93	int posix_cpu_clock_getres(const clockid_t which_clock, struct timespec *ts);
	94	int posix_cpu_clock_get(const clockid_t which_clock, struct timespec *ts);
	95	int posix_cpu_clock_set(const clockid_t which_clock, const struct timespec *ts);
	96	int posix_cpu_timer_create(struct k_itimer *timer);
	97	int posix_cpu_nsleep(const clockid_t which_clock, int flags,
97735f25	98	struct timespec rqtp, struct timespec __user rmtp);
1711ef38	99	long posix_cpu_nsleep_restart(struct restart_block *restart_block);
2a698971 TG	100	int posix_cpu_timer_set(struct k_itimer *timer, int flags,
	101	struct itimerspec new, struct itimerspec old);
	102	int posix_cpu_timer_del(struct k_itimer *timer);
	103	void posix_cpu_timer_get(struct k_itimer timer, struct itimerspec itp);
	104
	105	void posix_cpu_timer_schedule(struct k_itimer *timer);
	106
	107	void run_posix_cpu_timers(struct task_struct *task);
	108	void posix_cpu_timers_exit(struct task_struct *task);
	109	void posix_cpu_timers_exit_group(struct task_struct *task);
	110
	111	void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
	112	cputime_t newval, cputime_t oldval);
1da177e4	113
1711ef38 TA	114	long clock_nanosleep_restart(struct restart_block *restart_block);
1711ef38 TA	115
f06febc9 FM	116	void update_rlimit_cpu(unsigned long rlim_new);
f06febc9 FM	117
1da177e4	118	#endif