FreeBSD/Linux Kernel Cross Reference
sys/compat/linuxkpi/common/include/linux/tracepoint.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause
      *
      * Copyright (c) 2022 Bjoern A. Zeeb
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _LINUXKPI_LINUX_TRACEPOINT_H
    #define _LINUXKPI_LINUX_TRACEPOINT_H
    
    #define TP_PROTO(...)                   __VA_ARGS__
    #define TP_ARGS(...)
    #define TP_STRUCT__entry(...)
    #define TP_fast_assign(...)
    #define TP_printk(...)
    
    #define TRACE_EVENT(_name, _proto, _args, _struct, _assign, _printk)    \
    static inline void trace_ ## _name(_proto)                              \
    {                                                                       \
    }
    
    #define DECLARE_EVENT_CLASS(...)
    #define DEFINE_EVENT(_x, _name, _proto, _args)                          \
    static inline void trace_ ## _name(_proto)                              \
    {                                                                       \
    }
    
    #endif  /* _LINUXKPI_LINUX_TRACEPOINT_H */

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