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libspl: move DTRACE_PROBE macros from zfs_context.h

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Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #17861
This commit is contained in:
Rob Norris 2025-10-19 13:42:49 +11:00 committed by Brian Behlendorf
parent 03b2e5c40c
commit 248c7ed0d2
3 changed files with 75 additions and 41 deletions
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42
include/sys/zfs_context.h
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@ -129,6 +129,7 @@ extern "C" {
#include <sys/misc.h>
#include <sys/random.h>
#include <sys/callb.h>
#include <sys/trace.h>
#include <sys/zfs_context_os.h>
@ -140,47 +141,6 @@ extern "C" {
#define likely(x) __builtin_expect((x), 1)
#define unlikely(x) __builtin_expect((x), 0)
/*
* DTrace SDT probes have different signatures in userland than they do in
* the kernel. If they're being used in kernel code, re-define them out of
* existence for their counterparts in libzpool.
*
* Here's an example of how to use the set-error probes in userland:
* zfs$target:::set-error /arg0 == EBUSY/ {stack();}
*
* Here's an example of how to use DTRACE_PROBE probes in userland:
* If there is a probe declared as follows:
* DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
* Then you can use it as follows:
* zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
* {printf("%u %p\n", arg1, arg2);}
*/
#ifdef DTRACE_PROBE
#undef DTRACE_PROBE
#endif /* DTRACE_PROBE */
#define DTRACE_PROBE(a)
#ifdef DTRACE_PROBE1
#undef DTRACE_PROBE1
#endif /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c)
#ifdef DTRACE_PROBE2
#undef DTRACE_PROBE2
#endif /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e)
#ifdef DTRACE_PROBE3
#undef DTRACE_PROBE3
#endif /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g)
#ifdef DTRACE_PROBE4
#undef DTRACE_PROBE4
#endif /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)
#ifdef __FreeBSD__
typedef off_t loff_t;
#endif

1
lib/libspl/include/Makefile.am
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@ -67,6 +67,7 @@ libspl_sys_HEADERS = \
%D%/sys/taskq.h \
%D%/sys/time.h \
%D%/sys/timer.h \
%D%/sys/trace.h \
%D%/sys/trace_spl.h \
%D%/sys/tsd.h \
%D%/sys/tunables.h \

73
lib/libspl/include/sys/trace.h Normal file
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@ -0,0 +1,73 @@
// SPDX-License-Identifier: CDDL-1.0
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or https://opensource.org/licenses/CDDL-1.0.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
#ifndef _SYS_TRACE_H
#define _SYS_TRACE_H
/*
* DTrace SDT probes have different signatures in userland than they do in
* the kernel. If they're being used in kernel code, re-define them out of
* existence for their counterparts in libzpool.
*
* Here's an example of how to use the set-error probes in userland:
* zfs$target:::set-error /arg0 == EBUSY/ {stack();}
*
* Here's an example of how to use DTRACE_PROBE probes in userland:
* If there is a probe declared as follows:
* DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
* Then you can use it as follows:
* zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
* {printf("%u %p\n", arg1, arg2);}
*/
#ifdef DTRACE_PROBE
#undef DTRACE_PROBE
#endif /* DTRACE_PROBE */
#define DTRACE_PROBE(a)
#ifdef DTRACE_PROBE1
#undef DTRACE_PROBE1
#endif /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c)
#ifdef DTRACE_PROBE2
#undef DTRACE_PROBE2
#endif /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e)
#ifdef DTRACE_PROBE3
#undef DTRACE_PROBE3
#endif /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g)
#ifdef DTRACE_PROBE4
#undef DTRACE_PROBE4
#endif /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)
#endif /* _SYS_TRACE_H */