--- /dev/null
+/*
+ * 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_watchdog_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__ */
Code Review / kvmfornfv.git / blobdiff