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
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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.
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34 * libcfs/include/libcfs/libcfs_prim.h
40 #ifndef __LIBCFS_PRIM_H__
41 #define __LIBCFS_PRIM_H__
43 void add_wait_queue_exclusive_head(wait_queue_head_t *, wait_queue_t *);
48 #ifndef memory_pressure_get
49 #define memory_pressure_get() (0)
51 #ifndef memory_pressure_set
52 #define memory_pressure_set() do {} while (0)
54 #ifndef memory_pressure_clr
55 #define memory_pressure_clr() do {} while (0)
58 static inline int cfs_memory_pressure_get_and_set(void)
60 int old = memory_pressure_get();
63 memory_pressure_set();
67 static inline void cfs_memory_pressure_restore(int old)
70 memory_pressure_set();
72 memory_pressure_clr();