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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef __LIBCFS_LIBCFS_H__
34 #define __LIBCFS_LIBCFS_H__
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/workqueue.h>
39 #include <linux/sched.h>
40 #ifdef HAVE_SCHED_HEADERS
41 #include <linux/sched/signal.h>
44 #include <libcfs/linux/linux-misc.h>
45 #include <libcfs/linux/linux-time.h>
46 #include <libcfs/linux/linux-wait.h>
48 #include <uapi/linux/lnet/libcfs_ioctl.h>
49 #include <libcfs/libcfs_debug.h>
50 #include <libcfs/libcfs_private.h>
51 #include <libcfs/bitmap.h>
52 #include <libcfs/libcfs_cpu.h>
53 #include <libcfs/libcfs_prim.h>
54 #include <libcfs/libcfs_string.h>
55 #include <libcfs/libcfs_workitem.h>
56 #include <libcfs/libcfs_hash.h>
57 #include <libcfs/libcfs_heap.h>
58 #include <libcfs/libcfs_fail.h>
61 #define LIBCFS_VERSION "0.7.1"
63 #define PO2_ROUNDUP_TYPED(x, po2, type) (-(-(type)(x) & -(type)(po2)))
64 #define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
66 /* Sparse annotations */
67 #if !defined(__must_hold)
69 # define __must_hold(x) __attribute__((context(x, 1, 1)))
70 # else /* __CHECKER__ */
71 # define __must_hold(x)
72 # endif /* !__CHECKER__ */
73 #endif /* !__must_hold */
75 #ifdef HAVE_TOTALRAM_PAGES_AS_FUNC
76 #ifndef cfs_totalram_pages
77 #define cfs_totalram_pages() totalram_pages()
80 #ifndef cfs_totalram_pages
81 #define cfs_totalram_pages() totalram_pages
85 typedef s32 timeout_t;
87 /* need both kernel and user-land acceptor */
88 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
89 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
91 extern struct blocking_notifier_head libcfs_ioctl_list;
92 static inline int notifier_from_ioctl_errno(int err)
96 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
100 * Defined by platform
102 int unshare_fs_struct(void);
104 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
106 #define container_of0(ptr, type, member) container_of_safe(ptr, type, member)
108 extern struct workqueue_struct *cfs_rehash_wq;
110 struct lnet_debugfs_symlink_def {
115 void lnet_insert_debugfs(struct ctl_table *table);
116 void lnet_remove_debugfs(struct ctl_table *table);
118 /* helper for sysctl handlers */
119 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
120 void __user *buffer, size_t *lenp,
121 int (*handler)(void *data, int write, loff_t pos,
122 void __user *buffer, int len));
125 #define wait_var_event_warning(var, condition, format, ...) \
131 ___wait_var_event(var, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
132 if (schedule_timeout(cfs_time_seconds(1)) == 0)\
133 CDEBUG(is_power_of_2(counter++) ? \
135 format, ## __VA_ARGS__) \
139 #endif /* _LIBCFS_LIBCFS_H_ */