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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/linux-2.6/sv.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/xfs/linux-2.6/sv.h')
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1 files changed, 89 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/sv.h b/fs/xfs/linux-2.6/sv.h
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+++ b/fs/xfs/linux-2.6/sv.h
@@ -0,0 +1,89 @@
1/*
2 * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */
32#ifndef __XFS_SUPPORT_SV_H__
33#define __XFS_SUPPORT_SV_H__
34
35#include <linux/wait.h>
36#include <linux/sched.h>
37#include <linux/spinlock.h>
38
39/*
40 * Synchronisation variables.
41 *
42 * (Parameters "pri", "svf" and "rts" are not implemented)
43 */
44
45typedef struct sv_s {
46 wait_queue_head_t waiters;
47} sv_t;
48
49#define SV_FIFO 0x0 /* sv_t is FIFO type */
50#define SV_LIFO 0x2 /* sv_t is LIFO type */
51#define SV_PRIO 0x4 /* sv_t is PRIO type */
52#define SV_KEYED 0x6 /* sv_t is KEYED type */
53#define SV_DEFAULT SV_FIFO
54
55
56static inline void _sv_wait(sv_t *sv, spinlock_t *lock, int state,
57 unsigned long timeout)
58{
59 DECLARE_WAITQUEUE(wait, current);
60
61 add_wait_queue_exclusive(&sv->waiters, &wait);
62 __set_current_state(state);
63 spin_unlock(lock);
64
65 schedule_timeout(timeout);
66
67 remove_wait_queue(&sv->waiters, &wait);
68}
69
70#define init_sv(sv,type,name,flag) \
71 init_waitqueue_head(&(sv)->waiters)
72#define sv_init(sv,flag,name) \
73 init_waitqueue_head(&(sv)->waiters)
74#define sv_destroy(sv) \
75 /*NOTHING*/
76#define sv_wait(sv, pri, lock, s) \
77 _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
78#define sv_wait_sig(sv, pri, lock, s) \
79 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)
80#define sv_timedwait(sv, pri, lock, s, svf, ts, rts) \
81 _sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, timespec_to_jiffies(ts))
82#define sv_timedwait_sig(sv, pri, lock, s, svf, ts, rts) \
83 _sv_wait(sv, lock, TASK_INTERRUPTIBLE, timespec_to_jiffies(ts))
84#define sv_signal(sv) \
85 wake_up(&(sv)->waiters)
86#define sv_broadcast(sv) \
87 wake_up_all(&(sv)->waiters)
88
89#endif /* __XFS_SUPPORT_SV_H__ */