/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * Basic library routines.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * libcfs/include/libcfs/linux/linux-prim.h
*
+ * Basic library routines.
*/
#ifndef __LIBCFS_LINUX_CFS_PRIM_H__
#error Do not #include this file directly. #include <libcfs/libcfs.h> instead
#endif
-#ifdef __KERNEL__
+#ifndef __KERNEL__
+#error This include is only for kernel use.
+#endif
+
#ifndef AUTOCONF_INCLUDED
#include <linux/config.h>
#endif
#include <linux/module.h>
+#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/proc_fs.h>
#include <linux/timer.h>
#include <linux/signal.h>
#include <linux/sched.h>
+#include <linux/kthread.h>
+#ifdef HAVE_LINUX_RANDOM_H
+#include <linux/random.h>
+#endif
#include <linux/miscdevice.h>
#include <libcfs/linux/portals_compat25.h>
#include <libcfs/linux/linux-time.h>
+#define CFS_KERN_EMERG KERN_EMERG
+#define CFS_KERN_ALERT KERN_ALERT
+#define CFS_KERN_CRIT KERN_CRIT
+#define CFS_KERN_ERR KERN_ERR
+#define CFS_KERN_WARNING KERN_WARNING
+#define CFS_KERN_NOTICE KERN_NOTICE
+#define CFS_KERN_INFO KERN_INFO
+#define CFS_KERN_DEBUG KERN_DEBUG
+
+/*
+ * CPU
+ */
+#ifdef for_each_possible_cpu
+#define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
+#elif defined(for_each_cpu)
+#define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
+#endif
+
+#ifdef NR_CPUS
+#define CFS_NR_CPUS NR_CPUS
+#else
+#define CFS_NR_CPUS 1
+#endif
+
+#ifdef HAVE_SET_CPUS_ALLOWED
+#define cfs_set_cpus_allowed(t, mask) set_cpus_allowed(t, mask)
+#else
+#define cfs_set_cpus_allowed(t, mask) set_cpus_allowed_ptr(t, &(mask))
+#endif
+
+/*
+ * cache
+ */
+#define CFS_L1_CACHE_ALIGN(x) L1_CACHE_ALIGN(x)
+
+/*
+ * IRQs
+ */
+#define CFS_NR_IRQS NR_IRQS
+
+#define CFS_EXPORT_SYMBOL(s) EXPORT_SYMBOL(s)
+
/*
* Pseudo device register
*/
#endif
#define cfs_unregister_sysctl_table(t) unregister_sysctl_table(t)
+#define DECLARE_PROC_HANDLER(name) \
+static int \
+LL_PROC_PROTO(name) \
+{ \
+ DECLARE_LL_PROC_PPOS_DECL; \
+ \
+ return proc_call_handler(table->data, write, \
+ ppos, buffer, lenp, \
+ __##name); \
+}
+
/*
* Symbol register
*/
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-#define cfs_symbol_register(s, p) inter_module_register(s, THIS_MODULE, p)
-#define cfs_symbol_unregister(s) inter_module_unregister(s)
-#define cfs_symbol_get(s) inter_module_get(s)
-#define cfs_symbol_put(s) inter_module_put(s)
-#define cfs_module_get() MOD_INC_USE_COUNT
-#define cfs_module_put() MOD_DEC_USE_COUNT
-#else
#define cfs_symbol_register(s, p) do {} while(0)
#define cfs_symbol_unregister(s) do {} while(0)
#define cfs_symbol_get(s) symbol_get(s)
#define cfs_symbol_put(s) symbol_put(s)
#define cfs_module_get() try_module_get(THIS_MODULE)
-#define cfs_module_put() module_put(THIS_MODULE)
-#endif
+#define cfs_try_module_get(m) try_module_get(m)
+#define __cfs_module_get(m) __module_get(m)
+#define cfs_module_put(m) module_put(m)
+#define cfs_module_refcount(m) module_refcount(m)
+
+typedef struct module cfs_module_t;
/*
* Proc file system APIs
*/
#define CFS_TASK_INTERRUPTIBLE TASK_INTERRUPTIBLE
#define CFS_TASK_UNINT TASK_UNINTERRUPTIBLE
+#define CFS_TASK_RUNNING TASK_RUNNING
+
+#define cfs_set_current_state(state) set_current_state(state)
+#define cfs_wait_event(wq, cond) wait_event(wq, cond)
typedef wait_queue_t cfs_waitlink_t;
typedef wait_queue_head_t cfs_waitq_t;
-
typedef long cfs_task_state_t;
-#define cfs_waitq_init(w) init_waitqueue_head(w)
-#define cfs_waitlink_init(l) init_waitqueue_entry(l, current)
-#define cfs_waitq_add(w, l) add_wait_queue(w, l)
-#define cfs_waitq_add_exclusive(w, l) add_wait_queue_exclusive(w, l)
-#define cfs_waitq_forward(l, w) do {} while(0)
-#define cfs_waitq_del(w, l) remove_wait_queue(w, l)
-#define cfs_waitq_active(w) waitqueue_active(w)
-#define cfs_waitq_signal(w) wake_up(w)
-#define cfs_waitq_signal_nr(w,n) wake_up_nr(w, n)
-#define cfs_waitq_broadcast(w) wake_up_all(w)
-#define cfs_waitq_wait(l, s) schedule()
-#define cfs_waitq_timedwait(l, s, t) schedule_timeout(t)
-#define cfs_schedule_timeout(s, t) schedule_timeout(t)
-#define cfs_schedule() schedule()
+#define cfs_kthread_run(fn, data, fmt, arg...) kthread_run(fn, data, fmt, ##arg)
/* Kernel thread */
typedef int (*cfs_thread_t)(void *);
-static inline int cfs_kernel_thread(int (*fn)(void *),
- void *arg, unsigned long flags)
-{
- void *orig_info = current->journal_info;
- int rc;
-
- current->journal_info = NULL;
- rc = kernel_thread(fn, arg, flags);
- current->journal_info = orig_info;
- return rc;
-}
-
+#define CFS_DAEMON_FLAGS (CLONE_VM | CLONE_FILES)
+extern int cfs_create_thread(int (*fn)(void *),
+ void *arg, unsigned long flags);
/*
* Task struct
/* Module interfaces */
#define cfs_module(name, version, init, fini) \
-module_init(init); \
-module_exit(fini)
+ module_init(init); \
+ module_exit(fini)
+#define cfs_request_module request_module
/*
* Signal
* Timer
*/
typedef struct timer_list cfs_timer_t;
-typedef void (*timer_func_t)(unsigned long);
-#define cfs_init_timer(t) init_timer(t)
-
-static inline void cfs_timer_init(cfs_timer_t *t, void (*func)(unsigned long), void *arg)
-{
- init_timer(t);
- t->function = (timer_func_t)func;
- t->data = (unsigned long)arg;
-}
-
-static inline void cfs_timer_done(cfs_timer_t *t)
-{
- return;
-}
-
-static inline void cfs_timer_arm(cfs_timer_t *t, cfs_time_t deadline)
-{
- mod_timer(t, deadline);
-}
-
-static inline void cfs_timer_disarm(cfs_timer_t *t)
-{
- del_timer(t);
-}
-
-static inline int cfs_timer_is_armed(cfs_timer_t *t)
-{
- return timer_pending(t);
-}
-
-static inline cfs_time_t cfs_timer_deadline(cfs_timer_t *t)
-{
- return t->expires;
-}
-
-
-/* deschedule for a bit... */
-static inline void cfs_pause(cfs_duration_t ticks)
-{
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(ticks);
-}
+#define CFS_MAX_SCHEDULE_TIMEOUT MAX_SCHEDULE_TIMEOUT
#ifndef wait_event_timeout /* Only for RHEL3 2.4.21 kernel */
#define __wait_event_timeout(wq, condition, timeout, ret) \
retval == 0; condition met; we're good.
retval > 0; timed out.
*/
-#define cfs_waitq_wait_event_timeout(wq, condition, timeout) \
-({ \
- int __ret = 0; \
+#define cfs_waitq_wait_event_timeout(wq, condition, timeout, ret) \
+do { \
+ ret = 0; \
if (!(condition)) \
- __wait_event_timeout(wq, condition, timeout, __ret); \
- __ret; \
-})
+ __wait_event_timeout(wq, condition, timeout, ret); \
+} while (0)
#else
-#define cfs_waitq_wait_event_timeout wait_event_timeout
+#define cfs_waitq_wait_event_timeout(wq, condition, timeout, ret) \
+ ret = wait_event_timeout(wq, condition, timeout)
#endif
-#ifndef wait_event_interruptible_timeout /* Only for RHEL3 2.4.21 kernel */
-#define __wait_event_interruptible_timeout(wq, condition, timeout, ret) \
-do { \
- int __ret = 0; \
- if (!(condition)) { \
- wait_queue_t __wait; \
- unsigned long expire; \
- \
- init_waitqueue_entry(&__wait, current); \
- expire = timeout + jiffies; \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_INTERRUPTIBLE); \
- if (condition) \
- break; \
- if (jiffies > expire) { \
- ret = jiffies - expire; \
- break; \
- } \
- if (!signal_pending(current)) { \
- schedule_timeout(timeout); \
- continue; \
- } \
- ret = -ERESTARTSYS; \
- break; \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
- } \
-} while (0)
+#define cfs_waitq_wait_event_interruptible_timeout(wq, c, timeout, ret) \
+ ret = wait_event_interruptible_timeout(wq, c, timeout)
/*
- retval == 0; condition met; we're good.
- retval < 0; interrupted by signal.
- retval > 0; timed out.
-*/
-#define cfs_waitq_wait_event_interruptible_timeout(wq, condition, timeout) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __wait_event_interruptible_timeout(wq, condition, \
- timeout, __ret); \
- __ret; \
-})
-#else
-#define cfs_waitq_wait_event_interruptible_timeout wait_event_interruptible_timeout
-#endif
+ * atomic
+ */
-#else /* !__KERNEL__ */
+typedef atomic_t cfs_atomic_t;
+
+#define cfs_atomic_read(atom) atomic_read(atom)
+#define cfs_atomic_inc(atom) atomic_inc(atom)
+#define cfs_atomic_inc_and_test(atom) atomic_inc_and_test(atom)
+#define cfs_atomic_inc_return(atom) atomic_inc_return(atom)
+#define cfs_atomic_inc_not_zero(atom) atomic_inc_not_zero(atom)
+#define cfs_atomic_dec(atom) atomic_dec(atom)
+#define cfs_atomic_dec_and_test(atom) atomic_dec_and_test(atom)
+#define cfs_atomic_dec_and_lock(atom, lock) atomic_dec_and_lock(atom, lock)
+#define cfs_atomic_dec_return(atom) atomic_dec_return(atom)
+#define cfs_atomic_set(atom, value) atomic_set(atom, value)
+#define cfs_atomic_add(value, atom) atomic_add(value, atom)
+#define cfs_atomic_add_return(value, atom) atomic_add_return(value, atom)
+#define cfs_atomic_sub(value, atom) atomic_sub(value, atom)
+#define cfs_atomic_sub_and_test(value, atom) atomic_sub_and_test(value, atom)
+#define cfs_atomic_sub_return(value, atom) atomic_sub_return(value, atom)
+#define CFS_ATOMIC_INIT(i) ATOMIC_INIT(i)
-typedef struct proc_dir_entry cfs_proc_dir_entry_t;
-#include "../user-prim.h"
+/*
+ * membar
+ */
+
+#define cfs_mb() mb()
+
+/*
+ * interrupt
+ */
-#endif /* __KERNEL__ */
+#define cfs_in_interrupt() in_interrupt()
+/*
+ * might_sleep
+ */
+#define cfs_might_sleep() might_sleep()
+
+/*
+ * group_info
+ */
+typedef struct group_info cfs_group_info_t;
+
+#define cfs_get_group_info(group_info) get_group_info(group_info)
+#define cfs_put_group_info(group_info) put_group_info(group_info)
+#define cfs_set_current_groups(group_info) set_current_groups(group_info)
+#define cfs_groups_free(group_info) groups_free(group_info)
+#define cfs_groups_alloc(gidsetsize) groups_alloc(gidsetsize)
+
+/*
+ * Random bytes
+ */
+#define cfs_get_random_bytes_prim(buf, nbytes) get_random_bytes(buf, nbytes)
#endif
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