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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/include/libcfs/user-prim.h
38 * Author: Nikita Danilov <nikita@clusterfs.com>
41 #ifndef __LIBCFS_USER_PRIM_H__
42 #define __LIBCFS_USER_PRIM_H__
44 #ifndef __LIBCFS_LIBCFS_H__
45 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
48 /* Implementations of portable APIs for liblustre */
51 * liblustre is single-threaded, so most "synchronization" APIs are trivial.
55 # define EXPORT_SYMBOL(s)
59 * Just present a single processor until will add thread support.
61 #ifndef smp_processor_id
62 # define smp_processor_id() 0
64 #ifndef num_online_cpus
65 # define num_online_cpus() 1
67 #ifndef num_possible_cpus
68 # define num_possible_cpus() 1
74 # define put_cpu() do {} while (0)
79 #ifndef for_each_possible_cpu
80 # define for_each_possible_cpu(cpu) for ((cpu) = 0; (cpu) < 1; (cpu)++)
87 typedef struct cfs_waitlink {
88 struct list_head sleeping;
92 typedef struct cfs_waitq {
93 struct list_head sleepers;
96 #define CFS_DECL_WAITQ(wq) wait_queue_head_t wq
97 void init_waitqueue_head(struct cfs_waitq *waitq);
98 void init_waitqueue_entry_current(struct cfs_waitlink *link);
99 void add_wait_queue(struct cfs_waitq *waitq, struct cfs_waitlink *link);
100 void add_wait_queue_exclusive(struct cfs_waitq *waitq, struct cfs_waitlink *link);
101 void add_wait_queue_exclusive_head(struct cfs_waitq *waitq, struct cfs_waitlink *link);
102 void remove_wait_queue(struct cfs_waitq *waitq, struct cfs_waitlink *link);
103 int waitqueue_active(struct cfs_waitq *waitq);
104 void wake_up(struct cfs_waitq *waitq);
105 void wake_up_nr(struct cfs_waitq *waitq, int nr);
106 void wake_up_all(struct cfs_waitq *waitq);
107 void waitq_wait(struct cfs_waitlink *link, long state);
108 int64_t waitq_timedwait(struct cfs_waitlink *link, long state, int64_t timeout);
109 void schedule_timeout_and_set_state(long state, int64_t timeout);
110 void cfs_pause(cfs_duration_t d);
111 int need_resched(void);
112 void cond_resched(void);
117 #define TASK_INTERRUPTIBLE (0)
118 #define TASK_UNINTERRUPTIBLE (1)
119 #define TASK_RUNNING (2)
121 static inline void schedule(void) {}
122 static inline void schedule_timeout(int64_t t) {}
123 static inline void set_current_state(int state)
130 typedef int (read_proc_t)(char *page, char **start, off_t off,
131 int count, int *eof, void *data);
133 struct file; /* forward ref */
134 typedef int (write_proc_t)(struct file *file, const char *buffer,
135 unsigned long count, void *data);
146 struct list_head tl_list;
147 void (*function)(ulong_ptr_t unused);
153 #define in_interrupt() (0)
158 static inline int misc_register(struct miscdevice *foo)
163 static inline int misc_deregister(struct miscdevice *foo)
168 #define cfs_recalc_sigpending(l) do {} while (0)
170 #define DAEMON_FLAGS 0
172 #define L1_CACHE_ALIGN(x) (x)
174 #ifdef HAVE_LIBPTHREAD
175 typedef int (*cfs_thread_t)(void *);
176 void *kthread_run(cfs_thread_t func, void *arg, const char namefmt[], ...);
178 /* Fine, crash, but stop giving me compile warnings */
179 #define kthread_run(f, a, n, ...) LBUG()
182 uid_t current_uid(void);
183 gid_t current_gid(void);
184 uid_t current_fsuid(void);
185 gid_t current_fsgid(void);
187 #ifndef HAVE_STRLCPY /* not in glibc for RHEL 5.x, remove when obsolete */
188 size_t strlcpy(char *tgt, const char *src, size_t tgt_len);
191 #ifndef HAVE_STRLCAT /* not in glibc for RHEL 5.x, remove when obsolete */
192 size_t strlcat(char *tgt, const char *src, size_t tgt_len);
195 #define LIBCFS_REALLOC(ptr, size) realloc(ptr, size)
197 #define cfs_online_cpus() sysconf(_SC_NPROCESSORS_ONLN)
199 // static inline void local_irq_save(unsigned long flag) {return;}
200 // static inline void local_irq_restore(unsigned long flag) {return;}
203 CFS_STACK_TRACE_DEPTH = 16
206 struct cfs_stack_trace {
207 void *frame[CFS_STACK_TRACE_DEPTH];
213 #ifndef do_div /* gcc only, platform-specific will override */
214 #define do_div(a,b) \
216 unsigned long remainder;\
217 remainder = (a) % (b); \
226 struct group_info{ };
229 # define min(x,y) ((x)<(y) ? (x) : (y))
233 # define max(x,y) ((x)>(y) ? (x) : (y))
236 #define get_random_bytes(val, size) (*val) = 0
238 /* utility libcfs init/fini entries */
239 static inline int libcfs_arch_init(void) {
242 static inline void libcfs_arch_cleanup(void) {
245 #endif /* __LIBCFS_USER_PRIM_H__ */