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_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 typedef s32 timeout_t;
77 /* need both kernel and user-land acceptor */
78 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
79 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
81 extern struct blocking_notifier_head libcfs_ioctl_list;
82 static inline int notifier_from_ioctl_errno(int err)
86 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
89 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
91 extern struct workqueue_struct *cfs_rehash_wq;
93 struct lnet_debugfs_symlink_def {
98 void lnet_insert_debugfs(struct ctl_table *table);
99 void lnet_remove_debugfs(struct ctl_table *table);
101 /* helper for sysctl handlers */
102 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
103 void __user *buffer, size_t *lenp,
104 int (*handler)(void *data, int write, loff_t pos,
105 void __user *buffer, int len));
110 #if BITS_PER_LONG == 32
111 /* limit to lowmem on 32-bit systems */
112 #define NUM_CACHEPAGES \
113 min(cfs_totalram_pages(), 1UL << (30 - PAGE_SHIFT) * 3 / 4)
115 #define NUM_CACHEPAGES cfs_totalram_pages()
118 #define wait_var_event_warning(var, condition, format, ...) \
124 ___wait_var_event(var, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
125 if (schedule_timeout(cfs_time_seconds(1)) == 0)\
126 CDEBUG(is_power_of_2(counter++) ? \
128 format, ## __VA_ARGS__) \
132 /* atomic-context safe vfree */
133 void libcfs_vfree_atomic(const void *addr);
135 #endif /* _LIBCFS_LIBCFS_H_ */