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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
130 lines
4.2 KiB
C
130 lines
4.2 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 http://www.opensolaris.org/os/licensing.
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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_dnode
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#if !defined(_TRACE_DNODE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_DNODE_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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* Generic support for three argument tracepoints of the form:
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*
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* DTRACE_PROBE3(...,
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* dnode_t *, ...,
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* int64_t, ...,
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* uint32_t, ...);
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*/
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/* BEGIN CSTYLED */
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DECLARE_EVENT_CLASS(zfs_dnode_move_class,
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TP_PROTO(dnode_t *dn, int64_t refcount, uint32_t dbufs),
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TP_ARGS(dn, refcount, dbufs),
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TP_STRUCT__entry(
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__field(uint64_t, dn_object)
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__field(dmu_object_type_t, dn_type)
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__field(uint16_t, dn_bonuslen)
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__field(uint8_t, dn_bonustype)
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__field(uint8_t, dn_nblkptr)
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__field(uint8_t, dn_checksum)
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__field(uint8_t, dn_compress)
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__field(uint8_t, dn_nlevels)
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__field(uint8_t, dn_indblkshift)
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__field(uint8_t, dn_datablkshift)
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__field(uint8_t, dn_moved)
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__field(uint16_t, dn_datablkszsec)
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__field(uint32_t, dn_datablksz)
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__field(uint64_t, dn_maxblkid)
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__field(int64_t, dn_tx_holds)
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__field(int64_t, dn_holds)
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__field(boolean_t, dn_have_spill)
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__field(int64_t, refcount)
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__field(uint32_t, dbufs)
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),
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TP_fast_assign(
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__entry->dn_object = dn->dn_object;
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__entry->dn_type = dn->dn_type;
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__entry->dn_bonuslen = dn->dn_bonuslen;
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__entry->dn_bonustype = dn->dn_bonustype;
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__entry->dn_nblkptr = dn->dn_nblkptr;
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__entry->dn_checksum = dn->dn_checksum;
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__entry->dn_compress = dn->dn_compress;
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__entry->dn_nlevels = dn->dn_nlevels;
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__entry->dn_indblkshift = dn->dn_indblkshift;
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__entry->dn_datablkshift = dn->dn_datablkshift;
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__entry->dn_moved = dn->dn_moved;
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__entry->dn_datablkszsec = dn->dn_datablkszsec;
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__entry->dn_datablksz = dn->dn_datablksz;
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__entry->dn_maxblkid = dn->dn_maxblkid;
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__entry->dn_tx_holds = dn->dn_tx_holds.rc_count;
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__entry->dn_holds = dn->dn_holds.rc_count;
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__entry->dn_have_spill = dn->dn_have_spill;
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__entry->refcount = refcount;
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__entry->dbufs = dbufs;
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),
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TP_printk("dn { object %llu type %d bonuslen %u bonustype %u "
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"nblkptr %u checksum %u compress %u nlevels %u indblkshift %u "
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"datablkshift %u moved %u datablkszsec %u datablksz %u "
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"maxblkid %llu tx_holds %lli holds %lli have_spill %d } "
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"refcount %lli dbufs %u",
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__entry->dn_object, __entry->dn_type, __entry->dn_bonuslen,
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__entry->dn_bonustype, __entry->dn_nblkptr, __entry->dn_checksum,
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__entry->dn_compress, __entry->dn_nlevels, __entry->dn_indblkshift,
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__entry->dn_datablkshift, __entry->dn_moved,
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__entry->dn_datablkszsec, __entry->dn_datablksz,
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__entry->dn_maxblkid, __entry->dn_tx_holds, __entry->dn_holds,
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__entry->dn_have_spill, __entry->refcount, __entry->dbufs)
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);
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/* END CSTYLED */
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/* BEGIN CSTYLED */
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#define DEFINE_DNODE_MOVE_EVENT(name) \
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DEFINE_EVENT(zfs_dnode_move_class, name, \
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TP_PROTO(dnode_t *dn, int64_t refcount, uint32_t dbufs), \
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TP_ARGS(dn, refcount, dbufs))
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/* END CSTYLED */
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DEFINE_DNODE_MOVE_EVENT(zfs_dnode__move);
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#endif /* _TRACE_DNODE_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_dnode
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#include <trace/define_trace.h>
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#else
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DEFINE_DTRACE_PROBE3(dnode__move);
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#endif /* HAVE_DECLARE_EVENT_CLASS */
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#endif /* _KERNEL */
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