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>
58 #define LIBCFS_VERSION "0.7.1"
60 /* Sparse annotations */
61 #if !defined(__must_hold)
63 # define __must_hold(x) __attribute__((context(x, 1, 1)))
64 # else /* __CHECKER__ */
65 # define __must_hold(x)
66 # endif /* !__CHECKER__ */
67 #endif /* !__must_hold */
69 typedef s32 timeout_t;
71 /* need both kernel and user-land acceptor */
72 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
73 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
75 extern struct blocking_notifier_head libcfs_ioctl_list;
76 static inline int notifier_from_ioctl_errno(int err)
80 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
83 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
85 extern struct workqueue_struct *cfs_rehash_wq;
87 void lnet_insert_debugfs(struct ctl_table *table);
88 void lnet_remove_debugfs(struct ctl_table *table);
90 /* helper for sysctl handlers */
91 int debugfs_doint(struct ctl_table *table, int write,
92 void __user *buffer, size_t *lenp, loff_t *ppos);
97 #if BITS_PER_LONG == 32
98 /* limit to lowmem on 32-bit systems */
99 #define NUM_CACHEPAGES \
100 min(cfs_totalram_pages(), 1UL << (30 - PAGE_SHIFT) * 3 / 4)
102 #define NUM_CACHEPAGES cfs_totalram_pages()
105 #define wait_var_event_warning(var, condition, format, ...) \
111 ___wait_var_event(var, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
112 if (schedule_timeout(cfs_time_seconds(1)) == 0)\
113 CDEBUG(is_power_of_2(counter++) ? \
115 format, ## __VA_ARGS__) \
119 /* atomic-context safe vfree */
120 void libcfs_vfree_atomic(const void *addr);
124 #ifdef HAVE_INTERVAL_TREE_CACHED
125 #define interval_tree_root rb_root_cached
126 #define interval_tree_first rb_first_cached
127 #define INTERVAL_TREE_ROOT RB_ROOT_CACHED
129 #define interval_tree_root rb_root
130 #define interval_tree_first rb_first
131 #define INTERVAL_TREE_ROOT RB_ROOT
132 #endif /* HAVE_INTERVAL_TREE_CACHED */
134 #endif /* _LIBCFS_LIBCFS_H_ */