diff options
Diffstat (limited to 'arch/um/kernel/time.c')
| -rw-r--r-- | arch/um/kernel/time.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c deleted file mode 100644 index 8fa2ae7f302..00000000000 --- a/arch/um/kernel/time.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <time.h> -#include <sys/time.h> -#include <signal.h> -#include <errno.h> -#include "user_util.h" -#include "kern_util.h" -#include "user.h" -#include "process.h" -#include "time_user.h" -#include "kern_constants.h" -#include "os.h" - -/* XXX This really needs to be declared and initialized in a kernel file since - * it's in <linux/time.h> - */ -extern struct timespec wall_to_monotonic; - -extern struct timeval xtime; - -struct timeval local_offset = { 0, 0 }; - -void timer(void) -{ - gettimeofday(&xtime, NULL); - timeradd(&xtime, &local_offset, &xtime); -} - -static void set_interval(int timer_type) -{ - int usec = 1000000/hz(); - struct itimerval interval = ((struct itimerval) { { 0, usec }, - { 0, usec } }); - - if(setitimer(timer_type, &interval, NULL) == -1) - panic("setitimer failed - errno = %d\n", errno); -} - -void enable_timer(void) -{ - set_interval(ITIMER_VIRTUAL); -} - -void prepare_timer(void * ptr) -{ - int usec = 1000000/hz(); - *(struct itimerval *)ptr = ((struct itimerval) { { 0, usec }, - { 0, usec }}); -} - -void disable_timer(void) -{ - struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }}); - if((setitimer(ITIMER_VIRTUAL, &disable, NULL) < 0) || - (setitimer(ITIMER_REAL, &disable, NULL) < 0)) - printk("disnable_timer - setitimer failed, errno = %d\n", - errno); - /* If there are signals already queued, after unblocking ignore them */ - set_handler(SIGALRM, SIG_IGN, 0, -1); - set_handler(SIGVTALRM, SIG_IGN, 0, -1); -} - -void switch_timers(int to_real) -{ - struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }}); - struct itimerval enable = ((struct itimerval) { { 0, 1000000/hz() }, - { 0, 1000000/hz() }}); - int old, new; - - if(to_real){ - old = ITIMER_VIRTUAL; - new = ITIMER_REAL; - } - else { - old = ITIMER_REAL; - new = ITIMER_VIRTUAL; - } - - if((setitimer(old, &disable, NULL) < 0) || - (setitimer(new, &enable, NULL))) - printk("switch_timers - setitimer failed, errno = %d\n", - errno); -} - -void uml_idle_timer(void) -{ - if(signal(SIGVTALRM, SIG_IGN) == SIG_ERR) - panic("Couldn't unset SIGVTALRM handler"); - - set_handler(SIGALRM, (__sighandler_t) alarm_handler, - SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1); - set_interval(ITIMER_REAL); -} - -extern void ktime_get_ts(struct timespec *ts); -#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) - -void time_init(void) -{ - struct timespec now; - - if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR) - panic("Couldn't set SIGVTALRM handler"); - set_interval(ITIMER_VIRTUAL); - - do_posix_clock_monotonic_gettime(&now); - wall_to_monotonic.tv_sec = -now.tv_sec; - wall_to_monotonic.tv_nsec = -now.tv_nsec; -} - -/* Defined in linux/ktimer.h, which can't be included here */ -#define clock_was_set() do { } while (0) - -void do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - - flags = time_lock(); - gettimeofday(tv, NULL); - timeradd(tv, &local_offset, tv); - time_unlock(flags); - clock_was_set(); -} - -int do_settimeofday(struct timespec *tv) -{ - struct timeval now; - unsigned long flags; - struct timeval tv_in; - - if ((unsigned long) tv->tv_nsec >= UM_NSEC_PER_SEC) - return -EINVAL; - - tv_in.tv_sec = tv->tv_sec; - tv_in.tv_usec = tv->tv_nsec / 1000; - - flags = time_lock(); - gettimeofday(&now, NULL); - timersub(&tv_in, &now, &local_offset); - time_unlock(flags); - - return(0); -} - -void idle_sleep(int secs) -{ - struct timespec ts; - - ts.tv_sec = secs; - ts.tv_nsec = 0; - nanosleep(&ts, NULL); -} - -/* XXX This partly duplicates init_irq_signals */ - -void user_time_init(void) -{ - set_handler(SIGVTALRM, (__sighandler_t) alarm_handler, - SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, - SIGALRM, SIGUSR2, -1); - set_handler(SIGALRM, (__sighandler_t) alarm_handler, - SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, - SIGVTALRM, SIGUSR2, -1); - set_interval(ITIMER_VIRTUAL); -} |