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1 /* 1 /*
2 * Copyright (c) 2000-2002 Silicon Graphics, I !! 2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
>> 3 * All Rights Reserved.
3 * 4 *
4 * This program is free software; you can redi !! 5 * This program is free software; you can redistribute it and/or
5 * under the terms of version 2 of the GNU Gen !! 6 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
7 * 8 *
8 * This program is distributed in the hope tha !! 9 * This program is distributed in the hope that it would be useful,
9 * WITHOUT ANY WARRANTY; without even the impl !! 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR !! 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * !! 12 * GNU General Public License for more details.
12 * Further, this software is distributed witho !! 13 *
13 * free of the rightful claim of any third per !! 14 * You should have received a copy of the GNU General Public License
14 * or the like. Any license provided herein, !! 15 * along with this program; if not, write the Free Software Foundation,
15 * otherwise, applies only to this software fi !! 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
16 * any, provided herein do not apply to combin <<
17 * other software, or any other product whatso <<
18 * <<
19 * You should have received a copy of the GNU <<
20 * with this program; if not, write the Free S <<
21 * Temple Place - Suite 330, Boston MA 02111-1 <<
22 * <<
23 * Contact information: Silicon Graphics, Inc. <<
24 * Mountain View, CA 94043, or: <<
25 * <<
26 * http://www.sgi.com <<
27 * <<
28 * For further information regarding this noti <<
29 * <<
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLN <<
31 */ 17 */
32 #ifndef __XFS_SUPPORT_SV_H__ 18 #ifndef __XFS_SUPPORT_SV_H__
33 #define __XFS_SUPPORT_SV_H__ 19 #define __XFS_SUPPORT_SV_H__
34 20
35 #include <linux/wait.h> 21 #include <linux/wait.h>
36 #include <linux/sched.h> 22 #include <linux/sched.h>
37 #include <linux/spinlock.h> 23 #include <linux/spinlock.h>
38 24
39 /* 25 /*
40 * Synchronisation variables. 26 * Synchronisation variables.
41 * 27 *
42 * (Parameters "pri", "svf" and "rts" are not 28 * (Parameters "pri", "svf" and "rts" are not implemented)
43 */ 29 */
44 30
45 typedef struct sv_s { 31 typedef struct sv_s {
46 wait_queue_head_t waiters; 32 wait_queue_head_t waiters;
47 } sv_t; 33 } sv_t;
48 34
49 #define SV_FIFO 0x0 /* sv_ 35 #define SV_FIFO 0x0 /* sv_t is FIFO type */
50 #define SV_LIFO 0x2 /* sv_ 36 #define SV_LIFO 0x2 /* sv_t is LIFO type */
51 #define SV_PRIO 0x4 /* sv_ 37 #define SV_PRIO 0x4 /* sv_t is PRIO type */
52 #define SV_KEYED 0x6 /* sv_ 38 #define SV_KEYED 0x6 /* sv_t is KEYED type */
53 #define SV_DEFAULT SV_FIFO 39 #define SV_DEFAULT SV_FIFO
54 40
55 41
56 static inline void _sv_wait(sv_t *sv, spinlock 42 static inline void _sv_wait(sv_t *sv, spinlock_t *lock, int state,
57 unsigned long tim 43 unsigned long timeout)
58 { 44 {
59 DECLARE_WAITQUEUE(wait, current); 45 DECLARE_WAITQUEUE(wait, current);
60 46
61 add_wait_queue_exclusive(&sv->waiters, 47 add_wait_queue_exclusive(&sv->waiters, &wait);
62 __set_current_state(state); 48 __set_current_state(state);
63 spin_unlock(lock); 49 spin_unlock(lock);
64 50
65 schedule_timeout(timeout); 51 schedule_timeout(timeout);
66 52
67 remove_wait_queue(&sv->waiters, &wait) 53 remove_wait_queue(&sv->waiters, &wait);
68 } 54 }
69 55
70 #define init_sv(sv,type,name,flag) \ <<
71 init_waitqueue_head(&(sv)->waiters) <<
72 #define sv_init(sv,flag,name) \ 56 #define sv_init(sv,flag,name) \
73 init_waitqueue_head(&(sv)->waiters) 57 init_waitqueue_head(&(sv)->waiters)
74 #define sv_destroy(sv) \ 58 #define sv_destroy(sv) \
75 /*NOTHING*/ 59 /*NOTHING*/
76 #define sv_wait(sv, pri, lock, s) \ 60 #define sv_wait(sv, pri, lock, s) \
77 _sv_wait(sv, lock, TASK_UNINTERRUPTIBL 61 _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
78 #define sv_wait_sig(sv, pri, lock, s) \ 62 #define sv_wait_sig(sv, pri, lock, s) \
79 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, 63 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
80 #define sv_timedwait(sv, pri, lock, s, svf, ts 64 #define sv_timedwait(sv, pri, lock, s, svf, ts, rts) \
81 _sv_wait(sv, lock, TASK_UNINTERRUPTIBL 65 _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, timespec_to_jiffies(ts))
82 #define sv_timedwait_sig(sv, pri, lock, s, svf 66 #define sv_timedwait_sig(sv, pri, lock, s, svf, ts, rts) \
83 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, 67 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, timespec_to_jiffies(ts))
84 #define sv_signal(sv) \ 68 #define sv_signal(sv) \
85 wake_up(&(sv)->waiters) 69 wake_up(&(sv)->waiters)
86 #define sv_broadcast(sv) \ 70 #define sv_broadcast(sv) \
87 wake_up_all(&(sv)->waiters) 71 wake_up_all(&(sv)->waiters)
88 72
89 #endif /* __XFS_SUPPORT_SV_H__ */ 73 #endif /* __XFS_SUPPORT_SV_H__ */
90 74
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