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90af1e83e8
__string field definition includes the source variable for a value of the string when the TP hits; in 6.10+ kernels, __assign_str() uses that to copy a value from src to the string, with older kernels, __assign_str still accepted src as a second parameter. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Pavel Snajdr <snajpa@snajpa.net> Co-authored-by: Tony Hutter <hutter2@llnl.gov> Closes #16475 Closes #16515
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#if defined(_KERNEL)
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#if defined(HAVE_DECLARE_EVENT_CLASS)
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM zfs
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#undef TRACE_SYSTEM_VAR
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#define TRACE_SYSTEM_VAR zfs_dbgmsg
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#if !defined(_TRACE_DBGMSG_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_DBGMSG_H
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#include <linux/tracepoint.h>
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#include <sys/types.h>
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/*
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* This file defines tracepoint events for use by the dbgmsg(),
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* dprintf(), and SET_ERROR() interfaces. These are grouped here because
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* they all provide a way to store simple messages in the debug log (as
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* opposed to events used by the DTRACE_PROBE interfaces which typically
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* dump structured data).
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*
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* This header is included inside the trace.h multiple inclusion guard,
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* and it is guarded above against direct inclusion, so it and need not
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* be guarded separately.
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*/
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/*
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* Generic support for one argument tracepoints of the form:
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*
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* DTRACE_PROBE1(...,
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* const char *, ...);
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*/
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/* BEGIN CSTYLED */
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DECLARE_EVENT_CLASS(zfs_dprintf_class,
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TP_PROTO(const char *msg),
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TP_ARGS(msg),
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TP_STRUCT__entry(
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__string(msg, msg)
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),
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TP_fast_assign(
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__assign_str_impl(msg, msg);
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),
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TP_printk("%s", __get_str(msg))
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);
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/* END CSTYLED */
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#define DEFINE_DPRINTF_EVENT(name) \
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DEFINE_EVENT(zfs_dprintf_class, name, \
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TP_PROTO(const char *msg), \
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TP_ARGS(msg))
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DEFINE_DPRINTF_EVENT(zfs_zfs__dprintf);
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#endif /* _TRACE_DBGMSG_H */
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#undef TRACE_INCLUDE_PATH
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_PATH sys
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#define TRACE_INCLUDE_FILE trace_dbgmsg
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#include <trace/define_trace.h>
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#else
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DEFINE_DTRACE_PROBE1(zfs__dprintf);
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#endif /* HAVE_DECLARE_EVENT_CLASS */
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#endif /* _KERNEL */
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