mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-26 19:19:32 +03:00
cb70964221
ZFS tracing efforts are hampered by the inability to access zfs static probes(probes using DTRACE_PROBE macros). The probes are available via tracepoints for GPL modules only. The build could be modified to generate a function for each unique DTRACE_PROBE invocation. These could be then accessed via kprobes. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Matt Ahrens <matt@delphix.com> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Signed-off-by: Brad Lewis <brad.lewis@delphix.com> Closes #8659 Closes #8663
141 lines
3.9 KiB
C
141 lines
3.9 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 http://www.opensolaris.org/os/licensing.
|
|
* 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)
|
|
#if defined(HAVE_DECLARE_EVENT_CLASS)
|
|
|
|
/*
|
|
* If tracepoints are available define dtrace_probe events for vdev
|
|
* related probes. Definitions in usr/include/trace.h will map
|
|
* DTRACE_PROBE* calls to tracepoints.
|
|
*/
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM zfs
|
|
|
|
#undef TRACE_SYSTEM_VAR
|
|
#define TRACE_SYSTEM_VAR zfs_vdev
|
|
|
|
#if !defined(_TRACE_VDEV_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_VDEV_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include <sys/types.h>
|
|
|
|
/*
|
|
* Generic support for three argument tracepoints of the form:
|
|
*
|
|
* DTRACE_PROBE3(...,
|
|
* spa_t *, ...,
|
|
* uint64_t, ...,
|
|
* uint64_t, ...);
|
|
*/
|
|
/* BEGIN CSTYLED */
|
|
DECLARE_EVENT_CLASS(zfs_removing_class_3,
|
|
TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size),
|
|
TP_ARGS(spa, offset, size),
|
|
TP_STRUCT__entry(
|
|
__field(spa_t *, vdev_spa)
|
|
__field(uint64_t, vdev_offset)
|
|
__field(uint64_t, vdev_size)
|
|
),
|
|
TP_fast_assign(
|
|
__entry->vdev_spa = spa;
|
|
__entry->vdev_offset = offset;
|
|
__entry->vdev_size = size;
|
|
),
|
|
TP_printk("spa %p offset %llu size %llu",
|
|
__entry->vdev_spa, __entry->vdev_offset,
|
|
__entry->vdev_size)
|
|
);
|
|
/* END CSTYLED */
|
|
|
|
/* BEGIN CSTYLED */
|
|
#define DEFINE_REMOVE_FREE_EVENT(name) \
|
|
DEFINE_EVENT(zfs_removing_class_3, name, \
|
|
TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size), \
|
|
TP_ARGS(spa, offset, size))
|
|
/* END CSTYLED */
|
|
DEFINE_REMOVE_FREE_EVENT(zfs_remove__free__synced);
|
|
DEFINE_REMOVE_FREE_EVENT(zfs_remove__free__unvisited);
|
|
|
|
/*
|
|
* Generic support for four argument tracepoints of the form:
|
|
*
|
|
* DTRACE_PROBE4(...,
|
|
* spa_t *, ...,
|
|
* uint64_t, ...,
|
|
* uint64_t, ...,
|
|
* uint64_t, ...);
|
|
*/
|
|
/* BEGIN CSTYLED */
|
|
DECLARE_EVENT_CLASS(zfs_removing_class_4,
|
|
TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size, uint64_t txg),
|
|
TP_ARGS(spa, offset, size, txg),
|
|
TP_STRUCT__entry(
|
|
__field(spa_t *, vdev_spa)
|
|
__field(uint64_t, vdev_offset)
|
|
__field(uint64_t, vdev_size)
|
|
__field(uint64_t, vdev_txg)
|
|
),
|
|
TP_fast_assign(
|
|
__entry->vdev_spa = spa;
|
|
__entry->vdev_offset = offset;
|
|
__entry->vdev_size = size;
|
|
__entry->vdev_txg = txg;
|
|
),
|
|
TP_printk("spa %p offset %llu size %llu txg %llu",
|
|
__entry->vdev_spa, __entry->vdev_offset,
|
|
__entry->vdev_size, __entry->vdev_txg)
|
|
);
|
|
|
|
/* BEGIN CSTYLED */
|
|
#define DEFINE_REMOVE_FREE_EVENT_TXG(name) \
|
|
DEFINE_EVENT(zfs_removing_class_4, name, \
|
|
TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size,uint64_t txg), \
|
|
TP_ARGS(spa, offset, size, txg))
|
|
/* END CSTYLED */
|
|
DEFINE_REMOVE_FREE_EVENT_TXG(zfs_remove__free__inflight);
|
|
|
|
#endif /* _TRACE_VDEV_H */
|
|
|
|
#undef TRACE_INCLUDE_PATH
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_PATH sys
|
|
#define TRACE_INCLUDE_FILE trace_vdev
|
|
#include <trace/define_trace.h>
|
|
|
|
#else
|
|
|
|
/*
|
|
* When tracepoints are not available, a DEFINE_DTRACE_PROBE* macro is
|
|
* needed for each DTRACE_PROBE. These will be used to generate stub
|
|
* tracing functions and protoypes for those functions. See
|
|
* include/sys/trace.h.
|
|
*/
|
|
|
|
DEFINE_DTRACE_PROBE3(remove__free__synced);
|
|
DEFINE_DTRACE_PROBE3(remove__free__unvisited);
|
|
DEFINE_DTRACE_PROBE4(remove__free__inflight);
|
|
|
|
#endif /* HAVE_DECLARE_EVENT_CLASS */
|
|
#endif /* _KERNEL */
|