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LinuxKPI; add the beginning of a tracepoint.h implementation

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Add a beginning of a tracepoint.h implementation to ease porting drivers
making use of this Linux facility.

MFC after:	3 days
Reviewed by:	hselasky
Differential Revision: https://reviews.freebsd.org/D34236
This commit is contained in:
Bjoern A. Zeeb 2022-02-09 12:13:19 +00:00
parent 85d61bd872
commit a4529c46d4
1 changed files with 44 additions and 0 deletions
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44
sys/compat/linuxkpi/common/include/linux/tracepoint.h Normal file
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/*-
* 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 void trace_ ## _name(_proto) \
{ \
}
#endif /* _LINUXKPI_LINUX_TRACEPOINT_H */