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,
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef __LIBCFS_LIBCFS_H__
38 #define __LIBCFS_LIBCFS_H__
40 #include <libcfs/list.h>
43 # include <libcfs/user-time.h>
44 # else /* __KERNEL__ */
45 # include <libcfs/linux/libcfs.h>
46 # include <libcfs/types.h>
49 #define LIBCFS_VERSION "0.5.0"
51 static inline int __is_po2(unsigned long long val)
53 return !(val & (val - 1));
56 #define IS_PO2(val) __is_po2((unsigned long long)(val))
57 #define PO2_ROUNDUP_TYPED(x, po2, type) (-(-(type)(x) & -(type)(po2)))
58 #define LOWEST_BIT_SET(x) ((x) & ~((x) - 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 /* libcfs watchdogs */
72 /* Add a watchdog which fires after "time" milliseconds of delay. You have to
73 * touch it once to enable it. */
74 struct lc_watchdog *lc_watchdog_add(int time,
75 void (*cb)(pid_t pid, void *),
78 /* Enables a watchdog and resets its timer. */
79 void lc_watchdog_touch(struct lc_watchdog *lcw, int timeout);
80 #define CFS_GET_TIMEOUT(svc) (max_t(int, obd_timeout, \
81 AT_OFF ? 0 : at_get(&svc->srv_at_estimate)) * \
82 svc->srv_watchdog_factor)
84 /* Disable a watchdog; touch it to restart it. */
85 void lc_watchdog_disable(struct lc_watchdog *lcw);
87 /* Clean up the watchdog */
88 void lc_watchdog_delete(struct lc_watchdog *lcw);
90 /* need both kernel and user-land acceptor */
91 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
92 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
95 * Drop into debugger, if possible. Implementation is provided by platform.
98 void cfs_enter_debugger(void);
101 * Defined by platform
103 int unshare_fs_struct(void);
104 sigset_t cfs_block_allsigs(void);
105 sigset_t cfs_block_sigs(unsigned long sigs);
106 sigset_t cfs_block_sigsinv(unsigned long sigs);
107 void cfs_restore_sigs(sigset_t);
108 void cfs_clear_sigpending(void);
111 * Random number handling
114 /* returns a random 32-bit integer */
115 unsigned int cfs_rand(void);
116 /* seed the generator */
117 void cfs_srand(unsigned int, unsigned int);
118 void cfs_get_random_bytes(void *buf, int size);
119 #endif /* __KERNEL__ */
121 #include <libcfs/byteorder.h>
122 #include <libcfs/libcfs_debug.h>
123 #include <libcfs/libcfs_private.h>
125 # include <libcfs/bitmap.h>
126 # include <libcfs/libcfs_cpu.h>
127 # include <libcfs/libcfs_ioctl.h>
128 # include <libcfs/libcfs_prim.h>
129 #endif /* __KERNEL__ */
130 #include <libcfs/libcfs_time.h>
132 # include <libcfs/libcfs_string.h>
133 # include <libcfs/libcfs_workitem.h>
134 # include <libcfs/libcfs_hash.h>
135 # include <libcfs/libcfs_heap.h>
136 # include <libcfs/libcfs_fail.h>
138 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
139 int libcfs_ioctl(unsigned long cmd, void __user *uparam);
141 /* container_of depends on "likely" which is defined in libcfs_private.h */
142 static inline void *__container_of(const void *ptr, unsigned long shift)
144 if (unlikely(IS_ERR(ptr) || ptr == NULL))
145 return ERR_CAST(ptr);
147 return (char *)ptr - shift;
150 #define container_of0(ptr, type, member) \
151 ((type *)__container_of((ptr), offsetof(type, member)))
153 #endif /* __KERNEL__ */
155 #endif /* _LIBCFS_LIBCFS_H_ */