4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
34 * libcfs/include/libcfs/libcfs_prim.h
40 #ifndef __LIBCFS_PRIM_H__
41 #define __LIBCFS_PRIM_H__
46 void cfs_pause(cfs_duration_t ticks);
51 typedef void (cfs_timer_func_t)(ulong_ptr_t);
52 void schedule_timeout_and_set_state(long, int64_t);
54 void init_waitqueue_entry_current(wait_queue_t *link);
55 int64_t waitq_timedwait(wait_queue_t *, long, int64_t);
56 void waitq_wait(wait_queue_t *, long);
57 void add_wait_queue_exclusive_head(wait_queue_head_t *, wait_queue_t *);
59 void cfs_init_timer(struct timer_list *t);
60 void cfs_timer_init(struct timer_list *t, cfs_timer_func_t *func, void *arg);
61 void cfs_timer_done(struct timer_list *t);
62 void cfs_timer_arm(struct timer_list *t, cfs_time_t deadline);
63 void cfs_timer_disarm(struct timer_list *t);
64 int cfs_timer_is_armed(struct timer_list *t);
65 cfs_time_t cfs_timer_deadline(struct timer_list *t);
70 #ifndef memory_pressure_get
71 #define memory_pressure_get() (0)
73 #ifndef memory_pressure_set
74 #define memory_pressure_set() do {} while (0)
76 #ifndef memory_pressure_clr
77 #define memory_pressure_clr() do {} while (0)
80 static inline int cfs_memory_pressure_get_and_set(void)
82 int old = memory_pressure_get();
85 memory_pressure_set();
89 static inline void cfs_memory_pressure_restore(int old)
92 memory_pressure_set();
94 memory_pressure_clr();