mirror of
https://git.proxmox.com/git/mirror_zfs
synced 2025-10-31 15:26:31 +00:00
1d3ba0bf01
The commit replaces all findings of the link: http://www.opensolaris.org/os/licensing with this one: https://opensource.org/licenses/CDDL-1.0 Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de> Closes #13619
176 lines
5.9 KiB
C
176 lines
5.9 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
#if defined(_KERNEL)
|
|
|
|
/*
|
|
* Calls to DTRACE_PROBE* are mapped to standard Linux kernel trace points
|
|
* when they are available(when HAVE_DECLARE_EVENT_CLASS is defined). The
|
|
* tracepoint event class definitions are found in the general tracing
|
|
* header file: include/sys/trace_*.h. See include/sys/trace_vdev.h for
|
|
* a good example.
|
|
*
|
|
* If tracepoints are not available, stub functions are generated which can
|
|
* be traced using kprobes. In this case, the DEFINE_DTRACE_PROBE* macros
|
|
* are used to provide the stub functions and also the prototypes for
|
|
* those functions. The mechanism to do this relies on DEFINE_DTRACE_PROBE
|
|
* macros defined in the general tracing headers(see trace_vdev.h) and
|
|
* CREATE_TRACE_POINTS being defined only in module/zfs/trace.c. When ZFS
|
|
* source files include the general tracing headers, e.g.
|
|
* module/zfs/vdev_removal.c including trace_vdev.h, DTRACE_PROBE calls
|
|
* are mapped to stub functions calls and prototypes for those calls are
|
|
* declared via DEFINE_DTRACE_PROBE*. Only module/zfs/trace.c defines
|
|
* CREATE_TRACE_POINTS. That is followed by includes of all the general
|
|
* tracing headers thereby defining all stub functions in one place via
|
|
* the DEFINE_DTRACE_PROBE macros.
|
|
*
|
|
* When adding new DTRACE_PROBEs to zfs source, both a tracepoint event
|
|
* class definition and a DEFINE_DTRACE_PROBE definition are needed to
|
|
* avoid undefined function errors.
|
|
*/
|
|
|
|
#if defined(HAVE_DECLARE_EVENT_CLASS)
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM zfs
|
|
|
|
#if !defined(_TRACE_ZFS_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_ZFS_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include <sys/types.h>
|
|
|
|
/*
|
|
* DTRACE_PROBE with 0 arguments is not currently available with
|
|
* tracepoint events
|
|
*/
|
|
#define DTRACE_PROBE(name) \
|
|
((void)0)
|
|
|
|
#define DTRACE_PROBE1(name, t1, arg1) \
|
|
trace_zfs_##name((arg1))
|
|
|
|
#define DTRACE_PROBE2(name, t1, arg1, t2, arg2) \
|
|
trace_zfs_##name((arg1), (arg2))
|
|
|
|
#define DTRACE_PROBE3(name, t1, arg1, t2, arg2, t3, arg3) \
|
|
trace_zfs_##name((arg1), (arg2), (arg3))
|
|
|
|
#define DTRACE_PROBE4(name, t1, arg1, t2, arg2, t3, arg3, t4, arg4) \
|
|
trace_zfs_##name((arg1), (arg2), (arg3), (arg4))
|
|
|
|
#endif /* _TRACE_ZFS_H */
|
|
|
|
#undef TRACE_INCLUDE_PATH
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_PATH sys
|
|
#define TRACE_INCLUDE_FILE trace
|
|
#include <trace/define_trace.h>
|
|
|
|
#else /* HAVE_DECLARE_EVENT_CLASS */
|
|
|
|
#define DTRACE_PROBE(name) \
|
|
trace_zfs_##name()
|
|
|
|
#define DTRACE_PROBE1(name, t1, arg1) \
|
|
trace_zfs_##name((uintptr_t)(arg1))
|
|
|
|
#define DTRACE_PROBE2(name, t1, arg1, t2, arg2) \
|
|
trace_zfs_##name((uintptr_t)(arg1), (uintptr_t)(arg2))
|
|
|
|
#define DTRACE_PROBE3(name, t1, arg1, t2, arg2, t3, arg3) \
|
|
trace_zfs_##name((uintptr_t)(arg1), (uintptr_t)(arg2), \
|
|
(uintptr_t)(arg3))
|
|
|
|
#define DTRACE_PROBE4(name, t1, arg1, t2, arg2, t3, arg3, t4, arg4) \
|
|
trace_zfs_##name((uintptr_t)(arg1), (uintptr_t)(arg2), \
|
|
(uintptr_t)(arg3), (uintptr_t)(arg4))
|
|
|
|
#define PROTO_DTRACE_PROBE(name) \
|
|
noinline void trace_zfs_##name(void)
|
|
#define PROTO_DTRACE_PROBE1(name) \
|
|
noinline void trace_zfs_##name(uintptr_t)
|
|
#define PROTO_DTRACE_PROBE2(name) \
|
|
noinline void trace_zfs_##name(uintptr_t, uintptr_t)
|
|
#define PROTO_DTRACE_PROBE3(name) \
|
|
noinline void trace_zfs_##name(uintptr_t, uintptr_t, \
|
|
uintptr_t)
|
|
#define PROTO_DTRACE_PROBE4(name) \
|
|
noinline void trace_zfs_##name(uintptr_t, uintptr_t, \
|
|
uintptr_t, uintptr_t)
|
|
|
|
#if defined(CREATE_TRACE_POINTS)
|
|
|
|
#define FUNC_DTRACE_PROBE(name) \
|
|
PROTO_DTRACE_PROBE(name); \
|
|
noinline void trace_zfs_##name(void) { } \
|
|
EXPORT_SYMBOL(trace_zfs_##name)
|
|
|
|
#define FUNC_DTRACE_PROBE1(name) \
|
|
PROTO_DTRACE_PROBE1(name); \
|
|
noinline void trace_zfs_##name(uintptr_t arg1) { } \
|
|
EXPORT_SYMBOL(trace_zfs_##name)
|
|
|
|
#define FUNC_DTRACE_PROBE2(name) \
|
|
PROTO_DTRACE_PROBE2(name); \
|
|
noinline void trace_zfs_##name(uintptr_t arg1, \
|
|
uintptr_t arg2) { } \
|
|
EXPORT_SYMBOL(trace_zfs_##name)
|
|
|
|
#define FUNC_DTRACE_PROBE3(name) \
|
|
PROTO_DTRACE_PROBE3(name); \
|
|
noinline void trace_zfs_##name(uintptr_t arg1, \
|
|
uintptr_t arg2, uintptr_t arg3) { } \
|
|
EXPORT_SYMBOL(trace_zfs_##name)
|
|
|
|
#define FUNC_DTRACE_PROBE4(name) \
|
|
PROTO_DTRACE_PROBE4(name); \
|
|
noinline void trace_zfs_##name(uintptr_t arg1, \
|
|
uintptr_t arg2, uintptr_t arg3, uintptr_t arg4) { } \
|
|
EXPORT_SYMBOL(trace_zfs_##name)
|
|
|
|
#undef DEFINE_DTRACE_PROBE
|
|
#define DEFINE_DTRACE_PROBE(name) FUNC_DTRACE_PROBE(name)
|
|
|
|
#undef DEFINE_DTRACE_PROBE1
|
|
#define DEFINE_DTRACE_PROBE1(name) FUNC_DTRACE_PROBE1(name)
|
|
|
|
#undef DEFINE_DTRACE_PROBE2
|
|
#define DEFINE_DTRACE_PROBE2(name) FUNC_DTRACE_PROBE2(name)
|
|
|
|
#undef DEFINE_DTRACE_PROBE3
|
|
#define DEFINE_DTRACE_PROBE3(name) FUNC_DTRACE_PROBE3(name)
|
|
|
|
#undef DEFINE_DTRACE_PROBE4
|
|
#define DEFINE_DTRACE_PROBE4(name) FUNC_DTRACE_PROBE4(name)
|
|
|
|
#else /* CREATE_TRACE_POINTS */
|
|
|
|
#define DEFINE_DTRACE_PROBE(name) PROTO_DTRACE_PROBE(name)
|
|
#define DEFINE_DTRACE_PROBE1(name) PROTO_DTRACE_PROBE1(name)
|
|
#define DEFINE_DTRACE_PROBE2(name) PROTO_DTRACE_PROBE2(name)
|
|
#define DEFINE_DTRACE_PROBE3(name) PROTO_DTRACE_PROBE3(name)
|
|
#define DEFINE_DTRACE_PROBE4(name) PROTO_DTRACE_PROBE4(name)
|
|
|
|
#endif /* CREATE_TRACE_POINTS */
|
|
#endif /* HAVE_DECLARE_EVENT_CLASS */
|
|
#endif /* _KERNEL */
|