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/
32 #ifndef __LIBCFS_LIBCFS_H__
33 #define __LIBCFS_LIBCFS_H__
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/workqueue.h>
38 #include <linux/sched.h>
39 #ifdef HAVE_SCHED_HEADERS
40 #include <linux/sched/signal.h>
43 #include <libcfs/linux/linux-misc.h>
44 #include <libcfs/linux/linux-mem.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_string.h>
54 #include <libcfs/libcfs_workitem.h>
55 #include <libcfs/libcfs_hash.h>
56 #include <libcfs/libcfs_fail.h>
59 #define LIBCFS_VERSION "0.7.1"
61 /* Sparse annotations */
62 #if !defined(__must_hold)
64 # define __must_hold(x) __attribute__((context(x, 1, 1)))
65 # else /* __CHECKER__ */
66 # define __must_hold(x)
67 # endif /* !__CHECKER__ */
68 #endif /* !__must_hold */
70 typedef s32 timeout_t;
72 /* need both kernel and user-land acceptor */
73 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
74 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
76 extern struct blocking_notifier_head libcfs_ioctl_list;
77 static inline int notifier_from_ioctl_errno(int err)
81 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
84 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
86 extern struct workqueue_struct *cfs_rehash_wq;
88 struct lnet_debugfs_symlink_def {
93 void lnet_insert_debugfs(struct ctl_table *table);
94 void lnet_remove_debugfs(struct ctl_table *table);
96 /* helper for sysctl handlers */
97 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
98 void __user *buffer, size_t *lenp,
99 int (*handler)(void *data, int write, loff_t pos,
100 void __user *buffer, int len));
101 int debugfs_doint(struct ctl_table *table, int write,
102 void __user *buffer, size_t *lenp, loff_t *ppos);
107 #if BITS_PER_LONG == 32
108 /* limit to lowmem on 32-bit systems */
109 #define NUM_CACHEPAGES \
110 min(cfs_totalram_pages(), 1UL << (30 - PAGE_SHIFT) * 3 / 4)
112 #define NUM_CACHEPAGES cfs_totalram_pages()
115 #define wait_var_event_warning(var, condition, format, ...) \
121 ___wait_var_event(var, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
122 if (schedule_timeout(cfs_time_seconds(1)) == 0)\
123 CDEBUG(is_power_of_2(counter++) ? \
125 format, ## __VA_ARGS__) \
129 /* atomic-context safe vfree */
130 void libcfs_vfree_atomic(const void *addr);
134 #ifdef HAVE_INTERVAL_TREE_CACHED
135 #define interval_tree_root rb_root_cached
136 #define interval_tree_first rb_first_cached
137 #define INTERVAL_TREE_ROOT RB_ROOT_CACHED
139 #define interval_tree_root rb_root
140 #define interval_tree_first rb_first
141 #define INTERVAL_TREE_ROOT RB_ROOT
142 #endif /* HAVE_INTERVAL_TREE_CACHED */
144 #endif /* _LIBCFS_LIBCFS_H_ */