[mirror_ubuntu-eoan-kernel.git] / drivers / staging / lustre / include / linux / libcfs / libcfs_debug.h

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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.
 *
 * 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
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * 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.
 *
 * Copyright (c) 2012, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 *
 * libcfs/include/libcfs/libcfs_debug.h
 *
 * Debug messages and assertions
 *
 */

#ifndef __LIBCFS_DEBUG_H__
#define __LIBCFS_DEBUG_H__

/*
 *  Debugging
 */
extern unsigned int libcfs_subsystem_debug;
extern unsigned int libcfs_stack;
extern unsigned int libcfs_debug;
extern unsigned int libcfs_printk;
extern unsigned int libcfs_console_ratelimit;
extern unsigned int libcfs_console_max_delay;
extern unsigned int libcfs_console_min_delay;
extern unsigned int libcfs_console_backoff;
extern unsigned int libcfs_debug_binary;
extern char libcfs_debug_file_path_arr[PATH_MAX];

int libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys);
int libcfs_debug_str2mask(int *mask, const char *str, int is_subsys);

/* Has there been an LBUG? */
extern unsigned int libcfs_catastrophe;
extern unsigned int libcfs_panic_on_lbug;

/**
 * Format for debug message headers
 */
struct ptldebug_header {
	__u32 ph_len;
	__u32 ph_flags;
	__u32 ph_subsys;
	__u32 ph_mask;
	__u16 ph_cpu_id;
	__u16 ph_type;
	__u32 ph_sec;
	__u64 ph_usec;
	__u32 ph_stack;
	__u32 ph_pid;
	__u32 ph_extern_pid;
	__u32 ph_line_num;
} __packed;

#define PH_FLAG_FIRST_RECORD 1

/* Debugging subsystems (32 bits, non-overlapping) */
/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
#define S_UNDEFINED	0x00000001
#define S_MDC		0x00000002
#define S_MDS		0x00000004
#define S_OSC		0x00000008
#define S_OST		0x00000010
#define S_CLASS		0x00000020
#define S_LOG		0x00000040
#define S_LLITE		0x00000080
#define S_RPC		0x00000100
#define S_MGMT		0x00000200
#define S_LNET		0x00000400
#define S_LND		0x00000800 /* ALL LNDs */
#define S_PINGER	0x00001000
#define S_FILTER	0x00002000
/* unused */
#define S_ECHO		0x00008000
#define S_LDLM		0x00010000
#define S_LOV		0x00020000
#define S_LQUOTA	0x00040000
#define S_OSD		0x00080000
/* unused */
/* unused */
/* unused */
#define S_LMV		0x00800000 /* b_new_cmd */
/* unused */
#define S_SEC		0x02000000 /* upcall cache */
#define S_GSS		0x04000000 /* b_new_cmd */
/* unused */
#define S_MGC		0x10000000
#define S_MGS		0x20000000
#define S_FID		0x40000000 /* b_new_cmd */
#define S_FLD		0x80000000 /* b_new_cmd */
/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */

/* Debugging masks (32 bits, non-overlapping) */
/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
#define D_TRACE		0x00000001 /* ENTRY/EXIT markers */
#define D_INODE		0x00000002
#define D_SUPER		0x00000004
#define D_EXT2		0x00000008 /* anything from ext2_debug */
#define D_MALLOC	0x00000010 /* print malloc, free information */
#define D_CACHE		0x00000020 /* cache-related items */
#define D_INFO		0x00000040 /* general information */
#define D_IOCTL		0x00000080 /* ioctl related information */
#define D_NETERROR	0x00000100 /* network errors */
#define D_NET		0x00000200 /* network communications */
#define D_WARNING	0x00000400 /* CWARN(...) == CDEBUG (D_WARNING, ...) */
#define D_BUFFS		0x00000800
#define D_OTHER		0x00001000
#define D_DENTRY	0x00002000
#define D_NETTRACE	0x00004000
#define D_PAGE		0x00008000 /* bulk page handling */
#define D_DLMTRACE	0x00010000
#define D_ERROR		0x00020000 /* CERROR(...) == CDEBUG (D_ERROR, ...) */
#define D_EMERG		0x00040000 /* CEMERG(...) == CDEBUG (D_EMERG, ...) */
#define D_HA		0x00080000 /* recovery and failover */
#define D_RPCTRACE	0x00100000 /* for distributed debugging */
#define D_VFSTRACE	0x00200000
#define D_READA		0x00400000 /* read-ahead */
#define D_MMAP		0x00800000
#define D_CONFIG	0x01000000
#define D_CONSOLE	0x02000000
#define D_QUOTA		0x04000000
#define D_SEC		0x08000000
#define D_LFSCK		0x10000000 /* For both OI scrub and LFSCK */
/* keep these in sync with lnet/{utils,libcfs}/debug.c */

#define D_HSM	 D_TRACE

#define D_CANTMASK   (D_ERROR | D_EMERG | D_WARNING | D_CONSOLE)

#ifndef DEBUG_SUBSYSTEM
# define DEBUG_SUBSYSTEM S_UNDEFINED
#endif

#define CDEBUG_DEFAULT_MAX_DELAY (cfs_time_seconds(600))	 /* jiffies */
#define CDEBUG_DEFAULT_MIN_DELAY ((cfs_time_seconds(1) + 1) / 2) /* jiffies */
#define CDEBUG_DEFAULT_BACKOFF   2
struct cfs_debug_limit_state {
	unsigned long   cdls_next;
	unsigned int cdls_delay;
	int	     cdls_count;
};

struct libcfs_debug_msg_data {
	const char *msg_file;
	const char *msg_fn;
	int	    msg_subsys;
	int	    msg_line;
	int	    msg_mask;
	struct cfs_debug_limit_state *msg_cdls;
};

#define LIBCFS_DEBUG_MSG_DATA_INIT(data, mask, cdls)		\
do {								\
	(data)->msg_subsys = DEBUG_SUBSYSTEM;			\
	(data)->msg_file   = __FILE__;				\
	(data)->msg_fn     = __func__;				\
	(data)->msg_line   = __LINE__;				\
	(data)->msg_cdls   = (cdls);				\
	(data)->msg_mask   = (mask);				\
} while (0)

#define LIBCFS_DEBUG_MSG_DATA_DECL(dataname, mask, cdls)	\
	static struct libcfs_debug_msg_data dataname = {	\
	       .msg_subsys = DEBUG_SUBSYSTEM,			\
	       .msg_file   = __FILE__,				\
	       .msg_fn     = __func__,				\
	       .msg_line   = __LINE__,				\
	       .msg_cdls   = (cdls)	 };			\
	dataname.msg_mask   = (mask)

/**
 * Filters out logging messages based on mask and subsystem.
 */
static inline int cfs_cdebug_show(unsigned int mask, unsigned int subsystem)
{
	return mask & D_CANTMASK ||
		((libcfs_debug & mask) && (libcfs_subsystem_debug & subsystem));
}

#define __CDEBUG(cdls, mask, format, ...)				\
do {									\
	static struct libcfs_debug_msg_data msgdata;			\
									\
	CFS_CHECK_STACK(&msgdata, mask, cdls);				\
									\
	if (cfs_cdebug_show(mask, DEBUG_SUBSYSTEM)) {			\
		LIBCFS_DEBUG_MSG_DATA_INIT(&msgdata, mask, cdls);	\
		libcfs_debug_msg(&msgdata, format, ## __VA_ARGS__);	\
	}								\
} while (0)

#define CDEBUG(mask, format, ...) __CDEBUG(NULL, mask, format, ## __VA_ARGS__)

#define CDEBUG_LIMIT(mask, format, ...)					\
do {									\
	static struct cfs_debug_limit_state cdls;			\
									\
	__CDEBUG(&cdls, mask, format, ## __VA_ARGS__);			\
} while (0)

#define CWARN(format, ...)	CDEBUG_LIMIT(D_WARNING, format, ## __VA_ARGS__)
#define CERROR(format, ...)	CDEBUG_LIMIT(D_ERROR, format, ## __VA_ARGS__)
#define CNETERR(format, a...)	CDEBUG_LIMIT(D_NETERROR, format, ## a)
#define CEMERG(format, ...)	CDEBUG_LIMIT(D_EMERG, format, ## __VA_ARGS__)

#define LCONSOLE(mask, format, ...) CDEBUG(D_CONSOLE | (mask), format, ## __VA_ARGS__)
#define LCONSOLE_INFO(format, ...)  CDEBUG_LIMIT(D_CONSOLE, format, ## __VA_ARGS__)
#define LCONSOLE_WARN(format, ...)  CDEBUG_LIMIT(D_CONSOLE | D_WARNING, format, ## __VA_ARGS__)
#define LCONSOLE_ERROR_MSG(errnum, format, ...) CDEBUG_LIMIT(D_CONSOLE | D_ERROR, \
			   "%x-%x: " format, errnum, LERRCHKSUM(errnum), ## __VA_ARGS__)
#define LCONSOLE_ERROR(format, ...) LCONSOLE_ERROR_MSG(0x00, format, ## __VA_ARGS__)

#define LCONSOLE_EMERG(format, ...) CDEBUG(D_CONSOLE | D_EMERG, format, ## __VA_ARGS__)

int libcfs_debug_msg(struct libcfs_debug_msg_data *msgdata,
			    const char *format1, ...)
	__printf(2, 3);

int libcfs_debug_vmsg2(struct libcfs_debug_msg_data *msgdata,
			      const char *format1,
			      va_list args, const char *format2, ...)
	__printf(4, 5);

/* other external symbols that tracefile provides: */
int cfs_trace_copyin_string(char *knl_buffer, int knl_buffer_nob,
		const char __user *usr_buffer, int usr_buffer_nob);
int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
		const char *knl_buffer, char *append);

#define LIBCFS_DEBUG_FILE_PATH_DEFAULT "/tmp/lustre-log"

#endif	/* __LIBCFS_DEBUG_H__ */
Commit	Line	Data
d7e09d03 PT	1	/*
	2	* GPL HEADER START
	3	*
	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	5	*
	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.
	9	*
	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).
	15	*
	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
	19	*
	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
	22	* have any questions.
	23	*
	24	* GPL HEADER END
	25	*/
	26	/*
	27	* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
	28	* Use is subject to license terms.
	29	*
	30	* Copyright (c) 2012, Intel Corporation.
	31	*/
	32	/*
	33	* This file is part of Lustre, http://www.lustre.org/
	34	* Lustre is a trademark of Sun Microsystems, Inc.
	35	*
	36	* libcfs/include/libcfs/libcfs_debug.h
	37	*
	38	* Debug messages and assertions
	39	*
	40	*/
	41
	42	#ifndef __LIBCFS_DEBUG_H__
	43	#define __LIBCFS_DEBUG_H__
	44
	45	/*
	46	* Debugging
	47	*/
	48	extern unsigned int libcfs_subsystem_debug;
	49	extern unsigned int libcfs_stack;
	50	extern unsigned int libcfs_debug;
	51	extern unsigned int libcfs_printk;
	52	extern unsigned int libcfs_console_ratelimit;
d7e09d03 PT	53	extern unsigned int libcfs_console_max_delay;
	54	extern unsigned int libcfs_console_min_delay;
	55	extern unsigned int libcfs_console_backoff;
	56	extern unsigned int libcfs_debug_binary;
	57	extern char libcfs_debug_file_path_arr[PATH_MAX];
	58
	59	int libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys);
	60	int libcfs_debug_str2mask(int mask, const char str, int is_subsys);
	61
	62	/* Has there been an LBUG? */
	63	extern unsigned int libcfs_catastrophe;
	64	extern unsigned int libcfs_panic_on_lbug;
	65
	66	/**
	67	* Format for debug message headers
	68	*/
	69	struct ptldebug_header {
	70	__u32 ph_len;
	71	__u32 ph_flags;
	72	__u32 ph_subsys;
	73	__u32 ph_mask;
	74	__u16 ph_cpu_id;
	75	__u16 ph_type;
	76	__u32 ph_sec;
	77	__u64 ph_usec;
	78	__u32 ph_stack;
	79	__u32 ph_pid;
	80	__u32 ph_extern_pid;
	81	__u32 ph_line_num;
fd917652	82	} __packed;
d7e09d03	83
d7e09d03 PT	84	#define PH_FLAG_FIRST_RECORD 1
	85
	86	/* Debugging subsystems (32 bits, non-overlapping) */
	87	/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
5b50eeff SS	88	#define S_UNDEFINED 0x00000001
	89	#define S_MDC 0x00000002
	90	#define S_MDS 0x00000004
	91	#define S_OSC 0x00000008
	92	#define S_OST 0x00000010
	93	#define S_CLASS 0x00000020
	94	#define S_LOG 0x00000040
	95	#define S_LLITE 0x00000080
	96	#define S_RPC 0x00000100
	97	#define S_MGMT 0x00000200
	98	#define S_LNET 0x00000400
	99	#define S_LND 0x00000800 /* ALL LNDs */
	100	#define S_PINGER 0x00001000
	101	#define S_FILTER 0x00002000
d7e09d03	102	/* unused */
5b50eeff SS	103	#define S_ECHO 0x00008000
	104	#define S_LDLM 0x00010000
	105	#define S_LOV 0x00020000
	106	#define S_LQUOTA 0x00040000
d7e09d03 PT	107	#define S_OSD 0x00080000
	108	/* unused */
	109	/* unused */
	110	/* unused */
5b50eeff	111	#define S_LMV 0x00800000 /* b_new_cmd */
d7e09d03	112	/* unused */
5b50eeff SS	113	#define S_SEC 0x02000000 /* upcall cache */
5b50eeff SS	114	#define S_GSS 0x04000000 /* b_new_cmd */
d7e09d03	115	/* unused */
5b50eeff SS	116	#define S_MGC 0x10000000
	117	#define S_MGS 0x20000000
	118	#define S_FID 0x40000000 /* b_new_cmd */
	119	#define S_FLD 0x80000000 /* b_new_cmd */
d7e09d03 PT	120	/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
	121
	122	/* Debugging masks (32 bits, non-overlapping) */
	123	/* keep these in sync with lnet/utils/debug.c and lnet/libcfs/debug.c */
5b50eeff SS	124	#define D_TRACE 0x00000001 /* ENTRY/EXIT markers */
	125	#define D_INODE 0x00000002
	126	#define D_SUPER 0x00000004
	127	#define D_EXT2 0x00000008 /* anything from ext2_debug */
	128	#define D_MALLOC 0x00000010 /* print malloc, free information */
	129	#define D_CACHE 0x00000020 /* cache-related items */
	130	#define D_INFO 0x00000040 /* general information */
	131	#define D_IOCTL 0x00000080 /* ioctl related information */
	132	#define D_NETERROR 0x00000100 /* network errors */
	133	#define D_NET 0x00000200 /* network communications */
	134	#define D_WARNING 0x00000400 /* CWARN(...) == CDEBUG (D_WARNING, ...) */
	135	#define D_BUFFS 0x00000800
	136	#define D_OTHER 0x00001000
	137	#define D_DENTRY 0x00002000
	138	#define D_NETTRACE 0x00004000
	139	#define D_PAGE 0x00008000 /* bulk page handling */
	140	#define D_DLMTRACE 0x00010000
	141	#define D_ERROR 0x00020000 /* CERROR(...) == CDEBUG (D_ERROR, ...) */
	142	#define D_EMERG 0x00040000 /* CEMERG(...) == CDEBUG (D_EMERG, ...) */
	143	#define D_HA 0x00080000 /* recovery and failover */
	144	#define D_RPCTRACE 0x00100000 /* for distributed debugging */
	145	#define D_VFSTRACE 0x00200000
	146	#define D_READA 0x00400000 /* read-ahead */
	147	#define D_MMAP 0x00800000
	148	#define D_CONFIG 0x01000000
	149	#define D_CONSOLE 0x02000000
	150	#define D_QUOTA 0x04000000
	151	#define D_SEC 0x08000000
	152	#define D_LFSCK 0x10000000 /* For both OI scrub and LFSCK */
d7e09d03 PT	153	/* keep these in sync with lnet/{utils,libcfs}/debug.c */
	154
	155	#define D_HSM D_TRACE
	156
	157	#define D_CANTMASK (D_ERROR \| D_EMERG \| D_WARNING \| D_CONSOLE)
	158
	159	#ifndef DEBUG_SUBSYSTEM
	160	# define DEBUG_SUBSYSTEM S_UNDEFINED
	161	#endif
	162
	163	#define CDEBUG_DEFAULT_MAX_DELAY (cfs_time_seconds(600)) /* jiffies */
	164	#define CDEBUG_DEFAULT_MIN_DELAY ((cfs_time_seconds(1) + 1) / 2) /* jiffies */
	165	#define CDEBUG_DEFAULT_BACKOFF 2
a3ea59e0	166	struct cfs_debug_limit_state {
a649ad1d	167	unsigned long cdls_next;
1c4738c3	168	unsigned int cdls_delay;
d7e09d03	169	int cdls_count;
a3ea59e0	170	};
d7e09d03 PT	171
d7e09d03 PT	172	struct libcfs_debug_msg_data {
1c4738c3 SS	173	const char *msg_file;
	174	const char *msg_fn;
	175	int msg_subsys;
	176	int msg_line;
	177	int msg_mask;
	178	struct cfs_debug_limit_state *msg_cdls;
d7e09d03 PT	179	};
d7e09d03 PT	180
924a9f94 SS	181	#define LIBCFS_DEBUG_MSG_DATA_INIT(data, mask, cdls) \
	182	do { \
	183	(data)->msg_subsys = DEBUG_SUBSYSTEM; \
	184	(data)->msg_file = __FILE__; \
f9bd9c1a	185	(data)->msg_fn = __func__; \
924a9f94 SS	186	(data)->msg_line = __LINE__; \
	187	(data)->msg_cdls = (cdls); \
	188	(data)->msg_mask = (mask); \
d7e09d03 PT	189	} while (0)
d7e09d03 PT	190
924a9f94 SS	191	#define LIBCFS_DEBUG_MSG_DATA_DECL(dataname, mask, cdls) \
	192	static struct libcfs_debug_msg_data dataname = { \
	193	.msg_subsys = DEBUG_SUBSYSTEM, \
	194	.msg_file = __FILE__, \
f9bd9c1a	195	.msg_fn = __func__, \
924a9f94 SS	196	.msg_line = __LINE__, \
924a9f94 SS	197	.msg_cdls = (cdls) }; \
06133e80	198	dataname.msg_mask = (mask)
d7e09d03	199
d7e09d03 PT	200	/**
	201	* Filters out logging messages based on mask and subsystem.
	202	*/
	203	static inline int cfs_cdebug_show(unsigned int mask, unsigned int subsystem)
	204	{
	205	return mask & D_CANTMASK \|\|
	206	((libcfs_debug & mask) && (libcfs_subsystem_debug & subsystem));
	207	}
	208
924a9f94 SS	209	#define __CDEBUG(cdls, mask, format, ...) \
	210	do { \
	211	static struct libcfs_debug_msg_data msgdata; \
d7e09d03	212	\
924a9f94	213	CFS_CHECK_STACK(&msgdata, mask, cdls); \
d7e09d03	214	\
924a9f94 SS	215	if (cfs_cdebug_show(mask, DEBUG_SUBSYSTEM)) { \
	216	LIBCFS_DEBUG_MSG_DATA_INIT(&msgdata, mask, cdls); \
	217	libcfs_debug_msg(&msgdata, format, ## __VA_ARGS__); \
	218	} \
d7e09d03 PT	219	} while (0)
	220
	221	#define CDEBUG(mask, format, ...) __CDEBUG(NULL, mask, format, ## __VA_ARGS__)
	222
924a9f94 SS	223	#define CDEBUG_LIMIT(mask, format, ...) \
	224	do { \
	225	static struct cfs_debug_limit_state cdls; \
	226	\
	227	__CDEBUG(&cdls, mask, format, ## __VA_ARGS__); \
d7e09d03 PT	228	} while (0)
d7e09d03 PT	229
1c4738c3 SS	230	#define CWARN(format, ...) CDEBUG_LIMIT(D_WARNING, format, ## __VA_ARGS__)
	231	#define CERROR(format, ...) CDEBUG_LIMIT(D_ERROR, format, ## __VA_ARGS__)
	232	#define CNETERR(format, a...) CDEBUG_LIMIT(D_NETERROR, format, ## a)
	233	#define CEMERG(format, ...) CDEBUG_LIMIT(D_EMERG, format, ## __VA_ARGS__)
d7e09d03 PT	234
	235	#define LCONSOLE(mask, format, ...) CDEBUG(D_CONSOLE \| (mask), format, ## __VA_ARGS__)
	236	#define LCONSOLE_INFO(format, ...) CDEBUG_LIMIT(D_CONSOLE, format, ## __VA_ARGS__)
	237	#define LCONSOLE_WARN(format, ...) CDEBUG_LIMIT(D_CONSOLE \| D_WARNING, format, ## __VA_ARGS__)
	238	#define LCONSOLE_ERROR_MSG(errnum, format, ...) CDEBUG_LIMIT(D_CONSOLE \| D_ERROR, \
	239	"%x-%x: " format, errnum, LERRCHKSUM(errnum), ## __VA_ARGS__)
	240	#define LCONSOLE_ERROR(format, ...) LCONSOLE_ERROR_MSG(0x00, format, ## __VA_ARGS__)
	241
	242	#define LCONSOLE_EMERG(format, ...) CDEBUG(D_CONSOLE \| D_EMERG, format, ## __VA_ARGS__)
	243
a393fd54	244	int libcfs_debug_msg(struct libcfs_debug_msg_data *msgdata,
d7e09d03	245	const char *format1, ...)
70837c12	246	__printf(2, 3);
d7e09d03	247
a393fd54	248	int libcfs_debug_vmsg2(struct libcfs_debug_msg_data *msgdata,
d7e09d03 PT	249	const char *format1,
d7e09d03 PT	250	va_list args, const char *format2, ...)
70837c12	251	__printf(4, 5);
d7e09d03 PT	252
d7e09d03 PT	253	/* other external symbols that tracefile provides: */
a393fd54	254	int cfs_trace_copyin_string(char *knl_buffer, int knl_buffer_nob,
5a08f067 LC	255	const char __user *usr_buffer, int usr_buffer_nob);
	256	int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
	257	const char knl_buffer, char append);
d7e09d03 PT	258
	259	#define LIBCFS_DEBUG_FILE_PATH_DEFAULT "/tmp/lustre-log"
	260
	261	#endif /* __LIBCFS_DEBUG_H__ */