diff options
Diffstat (limited to 'i386/i386at/gpl/linux/linux_timer.c')
| -rw-r--r-- | i386/i386at/gpl/linux/linux_timer.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/i386/i386at/gpl/linux/linux_timer.c b/i386/i386at/gpl/linux/linux_timer.c deleted file mode 100644 index c1575323..00000000 --- a/i386/i386at/gpl/linux/linux_timer.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Linux timers. - * - * Copyright (C) 1996 The University of Utah and the Computer Systems - * Laboratory at the University of Utah (CSL) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Author: Shantanu Goel, University of Utah CSL - */ - -/* - * linux/kernel/sched.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - */ - -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <asm/system.h> - -unsigned long volatile jiffies = 0; - -/* - * Mask of active timers. - */ -unsigned long timer_active = 0; - -/* - * List of timeout routines. - */ -struct timer_struct timer_table[32]; - -/* - * The head for the timer-list has a "expires" field of MAX_UINT, - * and the sorting routine counts on this.. - */ -static struct timer_list timer_head = -{ - &timer_head, &timer_head, ~0, 0, NULL -}; - -#define SLOW_BUT_DEBUGGING_TIMERS 0 - -void -add_timer(struct timer_list *timer) -{ - unsigned long flags; - struct timer_list *p; - -#if SLOW_BUT_DEBUGGING_TIMERS - if (timer->next || timer->prev) { - printk("add_timer() called with non-zero list from %p\n", - __builtin_return_address(0)); - return; - } -#endif - p = &timer_head; - save_flags(flags); - cli(); - do { - p = p->next; - } while (timer->expires > p->expires); - timer->next = p; - timer->prev = p->prev; - p->prev = timer; - timer->prev->next = timer; - restore_flags(flags); -} - -int -del_timer(struct timer_list *timer) -{ - unsigned long flags; -#if SLOW_BUT_DEBUGGING_TIMERS - struct timer_list * p; - - p = &timer_head; - save_flags(flags); - cli(); - while ((p = p->next) != &timer_head) { - if (p == timer) { - timer->next->prev = timer->prev; - timer->prev->next = timer->next; - timer->next = timer->prev = NULL; - restore_flags(flags); - return 1; - } - } - if (timer->next || timer->prev) - printk("del_timer() called from %p with timer not initialized\n", - __builtin_return_address(0)); - restore_flags(flags); - return 0; -#else - struct timer_list * next; - int ret = 0; - save_flags(flags); - cli(); - if ((next = timer->next) != NULL) { - (next->prev = timer->prev)->next = next; - timer->next = timer->prev = NULL; - ret = 1; - } - restore_flags(flags); - return ret; -#endif -} - -/* - * Timer software interrupt handler. - */ -void -timer_bh() -{ - unsigned long mask; - struct timer_struct *tp; - struct timer_list * timer; - - cli(); - while ((timer = timer_head.next) != &timer_head - && timer->expires <= jiffies) { - void (*fn)(unsigned long) = timer->function; - unsigned long data = timer->data; - - timer->next->prev = timer->prev; - timer->prev->next = timer->next; - timer->next = timer->prev = NULL; - sti(); - fn(data); - cli(); - } - sti(); - - for (mask = 1, tp = timer_table; mask; tp++, mask <<= 1) { - if (mask > timer_active) - break; - if ((mask & timer_active) - && tp->expires > jiffies) { - timer_active &= ~mask; - (*tp->fn)(); - sti(); - } - } -} - -int linux_timer_print = 0; - -/* - * Timer interrupt handler. - */ -void -linux_timer_intr() -{ - unsigned long mask; - struct timer_struct *tp; - extern int pic_mask[]; - - jiffies++; - - for (mask = 1, tp = timer_table; mask; tp++, mask += mask) { - if (mask > timer_active) - break; - if (!(mask & timer_active)) - continue; - if (tp->expires > jiffies) - continue; - mark_bh(TIMER_BH); - } - if (timer_head.next->expires <= jiffies) - mark_bh(TIMER_BH); - if (tq_timer != &tq_last) - mark_bh(TQUEUE_BH); - if (linux_timer_print) - printf ("linux_timer_intr: pic_mask[0] %x\n", pic_mask[0]); -} - |