Viewing: linux-misc.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#ifndef __LIBCFS_LINUX_MISC_H__
#define __LIBCFS_LINUX_MISC_H__
#include <linux/kallsyms.h>
static inline unsigned long cfs_time_seconds(time64_t seconds)
{
return nsecs_to_jiffies64(seconds * NSEC_PER_SEC);
}
/* TODO: This will soon be private... */
void *cfs_kallsyms_lookup_name(const char *name);
int lustre_symbols_init(void);
int cfs_arch_init(void);
void cfs_arch_exit(void);
/*
* compat_module_init() / compat_module_exit() wrap a module's init/exit
* functions so that cfs_arch_init() / cfs_arch_exit() run around them.
* They are overridable: when lustre_compat is not linked into libcfs.ko,
* redefine these to bare late_initcall() / module_exit() before including
* this header.
*/
#ifndef compat_module_init
#define compat_module_init(init_fn) \
static int __init __compat_module_init(void) \
{ \
int __rc; \
\
__rc = cfs_arch_init(); \
if (__rc < 0) { \
pr_err("LustreError: cfs_arch_init: rc = %d\n", __rc); \
return __rc; \
} \
\
__rc = (init_fn)(); \
if (__rc) { \
cfs_arch_exit(); \
return __rc; \
} \
\
return 0; \
} \
late_initcall(__compat_module_init)
#endif
#ifndef compat_module_exit
#define compat_module_exit(exit_fn) \
static void __exit __compat_module_exit(void) \
{ \
(exit_fn)(); \
cfs_arch_exit(); \
} \
module_exit(__compat_module_exit)
#endif
#endif /* __LIBCFS_LINUX_MISC_H__ */
