1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef _LINUXKPI_LINUX_TIMER_H_ 30 #define _LINUXKPI_LINUX_TIMER_H_ 31 32 #include <linux/types.h> 33 34 #include <sys/param.h> 35 #include <sys/kernel.h> 36 #include <sys/callout.h> 37 38 struct timer_list { 39 struct callout callout; 40 union { 41 void (*function) (unsigned long); /* < v4.15 */ 42 void (*function_415) (struct timer_list *); 43 }; 44 unsigned long data; 45 int expires; 46 }; 47 48 extern unsigned long linux_timer_hz_mask; 49 50 #define TIMER_IRQSAFE 0x0001 51 52 #define from_timer(var, arg, field) \ 53 container_of(arg, typeof(*(var)), field) 54 55 #define timer_setup(timer, func, flags) do { \ 56 CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0); \ 57 (timer)->function_415 = (func); \ 58 (timer)->data = (unsigned long)(timer); \ 59 callout_init(&(timer)->callout, 1); \ 60 } while (0) 61 62 #define setup_timer(timer, func, dat) do { \ 63 (timer)->function = (func); \ 64 (timer)->data = (dat); \ 65 callout_init(&(timer)->callout, 1); \ 66 } while (0) 67 68 #define __setup_timer(timer, func, dat, flags) do { \ 69 CTASSERT(((flags) & ~TIMER_IRQSAFE) == 0); \ 70 setup_timer(timer, func, dat); \ 71 } while (0) 72 73 #define init_timer(timer) do { \ 74 (timer)->function = NULL; \ 75 (timer)->data = 0; \ 76 callout_init(&(timer)->callout, 1); \ 77 } while (0) 78 79 extern int mod_timer(struct timer_list *, int); 80 extern void add_timer(struct timer_list *); 81 extern void add_timer_on(struct timer_list *, int cpu); 82 extern int del_timer(struct timer_list *); 83 extern int del_timer_sync(struct timer_list *); 84 extern int timer_delete_sync(struct timer_list *); 85 extern int timer_shutdown_sync(struct timer_list *); 86 87 #define timer_pending(timer) callout_pending(&(timer)->callout) 88 #define round_jiffies(j) \ 89 ((int)(((j) + linux_timer_hz_mask) & ~linux_timer_hz_mask)) 90 #define round_jiffies_relative(j) round_jiffies(j) 91 #define round_jiffies_up(j) round_jiffies(j) 92 #define round_jiffies_up_relative(j) round_jiffies_up(j) 93 94 #endif /* _LINUXKPI_LINUX_TIMER_H_ */ 95