include/os/linux/zfs/sys/trace_dbgmsg.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 #if defined(_KERNEL)
  23 #if defined(HAVE_DECLARE_EVENT_CLASS)
  24
  25 #undef TRACE_SYSTEM
  26 #define TRACE_SYSTEM zfs
  27
  28 #undef TRACE_SYSTEM_VAR
  29 #define TRACE_SYSTEM_VAR zfs_dbgmsg
  30
  31 #if !defined(_TRACE_DBGMSG_H) || defined(TRACE_HEADER_MULTI_READ)
  32 #define _TRACE_DBGMSG_H
  33
  34 #include <linux/tracepoint.h>
  35
  36 /*
  37  * This file defines tracepoint events for use by the dbgmsg(),
  38  * dprintf(), and SET_ERROR() interfaces. These are grouped here because
  39  * they all provide a way to store simple messages in the debug log (as
  40  * opposed to events used by the DTRACE_PROBE interfaces which typically
  41  * dump structured data).
  42  *
  43  * This header is included inside the trace.h multiple inclusion guard,
  44  * and it is guarded above against direct inclusion, so it and need not
  45  * be guarded separately.
  46  */
  47
  48 /*
  49  * Generic support for one argument tracepoints of the form:
  50  *
  51  * DTRACE_PROBE1(...,
  52  *     const char *, ...);
  53  */
  54 /* BEGIN CSTYLED */
  55 DECLARE_EVENT_CLASS(zfs_dprintf_class,
  56         TP_PROTO(const char *msg),
  57         TP_ARGS(msg),
  58         TP_STRUCT__entry(
  59             __string(msg, msg)
  60         ),
  61         TP_fast_assign(
  62             __assign_str(msg, msg);
  63         ),
  64         TP_printk("%s", __get_str(msg))
  65 );
  66 /* END CSTYLED */
  67
  68 /* BEGIN CSTYLED */
  69 #define DEFINE_DPRINTF_EVENT(name) \
  70 DEFINE_EVENT(zfs_dprintf_class, name, \
  71         TP_PROTO(const char *msg), \
  72         TP_ARGS(msg))
  73 /* END CSTYLED */
  74 DEFINE_DPRINTF_EVENT(zfs_zfs__dprintf);
  75
  76 #endif /* _TRACE_DBGMSG_H */
  77
  78 #undef TRACE_INCLUDE_PATH
  79 #undef TRACE_INCLUDE_FILE
  80 #define TRACE_INCLUDE_PATH sys
  81 #define TRACE_INCLUDE_FILE trace_dbgmsg
  82 #include <trace/define_trace.h>
  83
  84 #else
  85
  86 DEFINE_DTRACE_PROBE1(zfs__dprintf);
  87
  88 #endif /* HAVE_DECLARE_EVENT_CLASS */
  89 #endif /* _KERNEL */