1/*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28#ifndef _LINUX_TIMER_H_ 29#define _LINUX_TIMER_H_ 30 31#include <linux/types.h> 32 33#include <sys/param.h> 34#include <sys/kernel.h> 35#include <sys/callout.h> 36 37struct timer_list { 38 struct callout timer_callout; 39 void (*function)(unsigned long); 40 unsigned long data; 41 unsigned long expires; 42}; 43 44static inline void 45_timer_fn(void *context) 46{ 47 struct timer_list *timer; 48 49 timer = context; 50 timer->function(timer->data); 51} 52 53#define setup_timer(timer, func, dat) \ 54do { \ 55 (timer)->function = (func); \ 56 (timer)->data = (dat); \ 57 callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE); \ 58} while (0) 59 60#define init_timer(timer) \ 61do { \ 62 (timer)->function = NULL; \ 63 (timer)->data = 0; \ 64 callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE); \ 65} while (0) 66 67#define mod_timer(timer, exp) \ 68do { \ 69 (timer)->expires = (exp); \ 70 callout_reset(&(timer)->timer_callout, (exp) - jiffies, \ 71 _timer_fn, (timer)); \ 72} while (0) 73 74#define add_timer(timer) \ 75 callout_reset(&(timer)->timer_callout, \ 76 (timer)->expires - jiffies, _timer_fn, (timer)) 77 78#define del_timer(timer) callout_stop(&(timer)->timer_callout) 79#define del_timer_sync(timer) callout_drain(&(timer)->timer_callout) 80 81#define timer_pending(timer) callout_pending(&(timer)->timer_callout) 82 83static inline unsigned long 84round_jiffies(unsigned long j) 85{ 86 return roundup(j, hz); 87} 88 89#endif /* _LINUX_TIMER_H_ */ 90