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-mem.h>
46 #include <libcfs/linux/linux-time.h>
47 #include <libcfs/linux/linux-wait.h>
49 #include <uapi/linux/lnet/libcfs_ioctl.h>
50 #include <libcfs/libcfs_debug.h>
51 #include <libcfs/libcfs_private.h>
52 #include <libcfs/bitmap.h>
53 #include <libcfs/libcfs_cpu.h>
54 #include <libcfs/libcfs_string.h>
55 #include <libcfs/libcfs_workitem.h>
56 #include <libcfs/libcfs_hash.h>
57 #include <libcfs/libcfs_fail.h>
60 #define LIBCFS_VERSION "0.7.1"
62 /* Sparse annotations */
63 #if !defined(__must_hold)
65 # define __must_hold(x) __attribute__((context(x, 1, 1)))
66 # else /* __CHECKER__ */
67 # define __must_hold(x)
68 # endif /* !__CHECKER__ */
69 #endif /* !__must_hold */
71 typedef s32 timeout_t;
73 /* need both kernel and user-land acceptor */
74 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
75 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
77 extern struct blocking_notifier_head libcfs_ioctl_list;
78 static inline int notifier_from_ioctl_errno(int err)
82 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
85 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
87 extern struct workqueue_struct *cfs_rehash_wq;
89 struct lnet_debugfs_symlink_def {
94 void lnet_insert_debugfs(struct ctl_table *table);
95 void lnet_remove_debugfs(struct ctl_table *table);
97 /* helper for sysctl handlers */
98 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
99 void __user *buffer, size_t *lenp,
100 int (*handler)(void *data, int write, loff_t pos,
101 void __user *buffer, int len));
106 #if BITS_PER_LONG == 32
107 /* limit to lowmem on 32-bit systems */
108 #define NUM_CACHEPAGES \
109 min(cfs_totalram_pages(), 1UL << (30 - PAGE_SHIFT) * 3 / 4)
111 #define NUM_CACHEPAGES cfs_totalram_pages()
114 #define wait_var_event_warning(var, condition, format, ...) \
120 ___wait_var_event(var, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
121 if (schedule_timeout(cfs_time_seconds(1)) == 0)\
122 CDEBUG(is_power_of_2(counter++) ? \
124 format, ## __VA_ARGS__) \
128 /* atomic-context safe vfree */
129 void libcfs_vfree_atomic(const void *addr);
131 #endif /* _LIBCFS_LIBCFS_H_ */