#include <linux/spinlock.h>
#include <linux/list.h>
+#include <linux/sched.h>
-struct k_clock_abs {
- struct list_head list;
- spinlock_t lock;
+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 */
+ int it_sigev_signo; /* signo word of sigevent struct */
+ sigval_t it_sigev_value; /* value 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 nano seconds */
- struct k_clock_abs *abs_struct;
- int (*clock_set) (struct timespec * tp);
- int (*clock_get) (struct timespec * tp);
- int (*nsleep) (int flags,
- struct timespec * new_setting,
- struct itimerspec * old_setting);
+ 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 *);
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);
};
-struct now_struct {
- unsigned long jiffies;
-};
-#define posix_get_now(now) (now)->jiffies = jiffies;
-#define posix_time_before(timer, now) \
- time_before((timer)->expires, (now)->jiffies)
-
-#define posix_bump_timer(timr, now) \
- do { \
- long delta, orun; \
- delta = now.jiffies - (timr)->it_timer.expires; \
- if (delta >= 0) { \
- orun = 1 + (delta / (timr)->it_incr); \
- (timr)->it_timer.expires += orun * (timr)->it_incr; \
- (timr)->it_overrun += orun; \
- } \
- }while (0)
+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);
+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);
+
#endif
git://git.onelab.eu / linux-2.6.git / blobdiff