4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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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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31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
34 * libcfs/include/libcfs/linux/linux-prim.h
36 * Basic library routines.
39 #ifndef __LIBCFS_LINUX_CFS_PRIM_H__
40 #define __LIBCFS_LINUX_CFS_PRIM_H__
42 #ifndef __LIBCFS_LIBCFS_H__
43 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
47 #error This include is only for kernel use.
50 #include <linux/module.h>
51 #include <linux/init.h>
52 #include <linux/kernel.h>
53 #include <linux/version.h>
54 #include <linux/proc_fs.h>
56 #include <linux/timer.h>
57 #include <linux/signal.h>
58 #include <linux/sched.h>
59 #include <linux/kthread.h>
60 #ifdef HAVE_LINUX_RANDOM_H
61 #include <linux/random.h>
64 #include <linux/miscdevice.h>
65 #include <libcfs/linux/portals_compat25.h>
66 #include <asm/div64.h>
68 #include <libcfs/linux/linux-time.h>
70 #define CFS_KERN_EMERG KERN_EMERG
71 #define CFS_KERN_ALERT KERN_ALERT
72 #define CFS_KERN_CRIT KERN_CRIT
73 #define CFS_KERN_ERR KERN_ERR
74 #define CFS_KERN_WARNING KERN_WARNING
75 #define CFS_KERN_NOTICE KERN_NOTICE
76 #define CFS_KERN_INFO KERN_INFO
77 #define CFS_KERN_DEBUG KERN_DEBUG
82 #ifdef for_each_possible_cpu
83 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
84 #elif defined(for_each_cpu)
85 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
89 #define CFS_NR_CPUS NR_CPUS
94 #ifdef HAVE_SET_CPUS_ALLOWED
95 #define cfs_set_cpus_allowed(t, mask) set_cpus_allowed(t, mask)
97 #define cfs_set_cpus_allowed(t, mask) set_cpus_allowed_ptr(t, &(mask))
103 #define CFS_L1_CACHE_ALIGN(x) L1_CACHE_ALIGN(x)
108 #define CFS_NR_IRQS NR_IRQS
110 #define CFS_EXPORT_SYMBOL(s) EXPORT_SYMBOL(s)
113 * Pseudo device register
115 typedef struct miscdevice cfs_psdev_t;
116 #define cfs_psdev_register(dev) misc_register(dev)
117 #define cfs_psdev_deregister(dev) misc_deregister(dev)
122 typedef struct ctl_table cfs_sysctl_table_t;
123 typedef struct ctl_table_header cfs_sysctl_table_header_t;
125 #ifdef HAVE_2ARGS_REGISTER_SYSCTL
126 #define cfs_register_sysctl_table(t, a) register_sysctl_table(t, a)
128 #define cfs_register_sysctl_table(t, a) register_sysctl_table(t)
130 #define cfs_unregister_sysctl_table(t) unregister_sysctl_table(t)
132 #define DECLARE_PROC_HANDLER(name) \
134 LL_PROC_PROTO(name) \
136 DECLARE_LL_PROC_PPOS_DECL; \
138 return proc_call_handler(table->data, write, \
139 ppos, buffer, lenp, \
146 #define cfs_symbol_register(s, p) do {} while(0)
147 #define cfs_symbol_unregister(s) do {} while(0)
148 #define cfs_symbol_get(s) symbol_get(s)
149 #define cfs_symbol_put(s) symbol_put(s)
150 #define cfs_module_get() try_module_get(THIS_MODULE)
151 #define cfs_try_module_get(m) try_module_get(m)
152 #define __cfs_module_get(m) __module_get(m)
153 #define cfs_module_put(m) module_put(m)
154 #define cfs_module_refcount(m) module_refcount(m)
156 typedef struct module cfs_module_t;
159 * Proc file system APIs
161 typedef read_proc_t cfs_read_proc_t;
162 typedef write_proc_t cfs_write_proc_t;
163 typedef struct proc_dir_entry cfs_proc_dir_entry_t;
164 #define cfs_create_proc_entry(n, m, p) create_proc_entry(n, m, p)
165 #define cfs_free_proc_entry(e) free_proc_entry(e)
166 #define cfs_remove_proc_entry(n, e) remove_proc_entry(n, e)
171 #define CFS_TASK_INTERRUPTIBLE TASK_INTERRUPTIBLE
172 #define CFS_TASK_UNINT TASK_UNINTERRUPTIBLE
173 #define CFS_TASK_RUNNING TASK_RUNNING
175 #define cfs_set_current_state(state) set_current_state(state)
176 #define cfs_wait_event(wq, cond) wait_event(wq, cond)
178 typedef wait_queue_t cfs_waitlink_t;
179 typedef wait_queue_head_t cfs_waitq_t;
180 typedef long cfs_task_state_t;
182 #define CFS_DECL_WAITQ(wq) DECLARE_WAIT_QUEUE_HEAD(wq)
184 #define cfs_kthread_run(fn, data, fmt, arg...) kthread_run(fn, data, fmt, ##arg)
187 typedef int (*cfs_thread_t)(void *);
189 #define CFS_DAEMON_FLAGS (CLONE_VM | CLONE_FILES)
190 extern int cfs_create_thread(int (*fn)(void *),
191 void *arg, unsigned long flags);
196 typedef struct task_struct cfs_task_t;
197 #define cfs_current() current
198 #define cfs_task_lock(t) task_lock(t)
199 #define cfs_task_unlock(t) task_unlock(t)
200 #define CFS_DECL_JOURNAL_DATA void *journal_info
201 #define CFS_PUSH_JOURNAL do { \
202 journal_info = current->journal_info; \
203 current->journal_info = NULL; \
205 #define CFS_POP_JOURNAL do { \
206 current->journal_info = journal_info; \
209 /* Module interfaces */
210 #define cfs_module(name, version, init, fini) \
213 #define cfs_request_module request_module
218 typedef sigset_t cfs_sigset_t;
223 typedef struct timer_list cfs_timer_t;
225 #define CFS_MAX_SCHEDULE_TIMEOUT MAX_SCHEDULE_TIMEOUT
227 #ifndef wait_event_timeout /* Only for RHEL3 2.4.21 kernel */
228 #define __wait_event_timeout(wq, condition, timeout, ret) \
231 if (!(condition)) { \
232 wait_queue_t __wait; \
233 unsigned long expire; \
235 init_waitqueue_entry(&__wait, current); \
236 expire = timeout + jiffies; \
237 add_wait_queue(&wq, &__wait); \
239 set_current_state(TASK_UNINTERRUPTIBLE); \
242 if (jiffies > expire) { \
243 ret = jiffies - expire; \
246 schedule_timeout(timeout); \
248 current->state = TASK_RUNNING; \
249 remove_wait_queue(&wq, &__wait); \
253 retval == 0; condition met; we're good.
254 retval > 0; timed out.
256 #define cfs_waitq_wait_event_timeout(wq, condition, timeout, ret) \
260 __wait_event_timeout(wq, condition, timeout, ret); \
263 #define cfs_waitq_wait_event_timeout(wq, condition, timeout, ret) \
264 ret = wait_event_timeout(wq, condition, timeout)
267 #define cfs_waitq_wait_event_interruptible_timeout(wq, c, timeout, ret) \
268 ret = wait_event_interruptible_timeout(wq, c, timeout)
274 typedef atomic_t cfs_atomic_t;
276 #define cfs_atomic_read(atom) atomic_read(atom)
277 #define cfs_atomic_inc(atom) atomic_inc(atom)
278 #define cfs_atomic_inc_and_test(atom) atomic_inc_and_test(atom)
279 #define cfs_atomic_inc_return(atom) atomic_inc_return(atom)
280 #define cfs_atomic_inc_not_zero(atom) atomic_inc_not_zero(atom)
281 #define cfs_atomic_add_unless(atom, a, u) atomic_add_unless(atom, a, u)
282 #define cfs_atomic_dec(atom) atomic_dec(atom)
283 #define cfs_atomic_dec_and_test(atom) atomic_dec_and_test(atom)
284 #define cfs_atomic_dec_and_lock(atom, lock) atomic_dec_and_lock(atom, lock)
285 #define cfs_atomic_dec_return(atom) atomic_dec_return(atom)
286 #define cfs_atomic_set(atom, value) atomic_set(atom, value)
287 #define cfs_atomic_add(value, atom) atomic_add(value, atom)
288 #define cfs_atomic_add_return(value, atom) atomic_add_return(value, atom)
289 #define cfs_atomic_sub(value, atom) atomic_sub(value, atom)
290 #define cfs_atomic_sub_and_test(value, atom) atomic_sub_and_test(value, atom)
291 #define cfs_atomic_sub_return(value, atom) atomic_sub_return(value, atom)
292 #define cfs_atomic_cmpxchg(atom, old, nv) atomic_cmpxchg(atom, old, nv)
293 #define CFS_ATOMIC_INIT(i) ATOMIC_INIT(i)
299 #define cfs_mb() mb()
305 #define cfs_in_interrupt() in_interrupt()
310 #define cfs_might_sleep() might_sleep()
315 typedef struct group_info cfs_group_info_t;
317 #define cfs_get_group_info(group_info) get_group_info(group_info)
318 #define cfs_put_group_info(group_info) put_group_info(group_info)
319 #define cfs_set_current_groups(group_info) set_current_groups(group_info)
320 #define cfs_groups_free(group_info) groups_free(group_info)
321 #define cfs_groups_alloc(gidsetsize) groups_alloc(gidsetsize)
326 #define cfs_get_random_bytes_prim(buf, nbytes) get_random_bytes(buf, nbytes)