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freebsd-nq/include/sys/trace_zil.h
Brad Lewis cb70964221 8659 static dtrace probes unavailable on non-GPL modules 
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
2019-07-08 11:20:53 -07:00

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/*
* 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)
#undef TRACE_SYSTEM
#define TRACE_SYSTEM zfs
#undef TRACE_SYSTEM_VAR
#define TRACE_SYSTEM_VAR zfs_zil
#if !defined(_TRACE_ZIL_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_ZIL_H
#include <linux/tracepoint.h>
#include <sys/types.h>
#define ZILOG_TP_STRUCT_ENTRY \
__field(uint64_t, zl_lr_seq) \
__field(uint64_t, zl_commit_lr_seq) \
__field(uint64_t, zl_destroy_txg) \
__field(uint64_t, zl_replaying_seq) \
__field(uint32_t, zl_suspend) \
__field(uint8_t, zl_suspending) \
__field(uint8_t, zl_keep_first) \
__field(uint8_t, zl_replay) \
__field(uint8_t, zl_stop_sync) \
__field(uint8_t, zl_logbias) \
__field(uint8_t, zl_sync) \
__field(int, zl_parse_error) \
__field(uint64_t, zl_parse_blk_seq) \
__field(uint64_t, zl_parse_lr_seq) \
__field(uint64_t, zl_parse_blk_count) \
__field(uint64_t, zl_parse_lr_count) \
__field(uint64_t, zl_cur_used) \
__field(clock_t, zl_replay_time) \
__field(uint64_t, zl_replay_blks)
#define ZILOG_TP_FAST_ASSIGN \
__entry->zl_lr_seq = zilog->zl_lr_seq; \
__entry->zl_commit_lr_seq = zilog->zl_commit_lr_seq; \
__entry->zl_destroy_txg = zilog->zl_destroy_txg; \
__entry->zl_replaying_seq = zilog->zl_replaying_seq; \
__entry->zl_suspend = zilog->zl_suspend; \
__entry->zl_suspending = zilog->zl_suspending; \
__entry->zl_keep_first = zilog->zl_keep_first; \
__entry->zl_replay = zilog->zl_replay; \
__entry->zl_stop_sync = zilog->zl_stop_sync; \
__entry->zl_logbias = zilog->zl_logbias; \
__entry->zl_sync = zilog->zl_sync; \
__entry->zl_parse_error = zilog->zl_parse_error; \
__entry->zl_parse_blk_seq = zilog->zl_parse_blk_seq; \
__entry->zl_parse_lr_seq = zilog->zl_parse_lr_seq; \
__entry->zl_parse_blk_count = zilog->zl_parse_blk_count;\
__entry->zl_parse_lr_count = zilog->zl_parse_lr_count; \
__entry->zl_cur_used = zilog->zl_cur_used; \
__entry->zl_replay_time = zilog->zl_replay_time; \
__entry->zl_replay_blks = zilog->zl_replay_blks;
#define ZILOG_TP_PRINTK_FMT \
"zl { lr_seq %llu commit_lr_seq %llu destroy_txg %llu " \
"replaying_seq %llu suspend %u suspending %u keep_first %u " \
"replay %u stop_sync %u logbias %u sync %u " \
"parse_error %u parse_blk_seq %llu parse_lr_seq %llu " \
"parse_blk_count %llu parse_lr_count %llu " \
"cur_used %llu replay_time %lu replay_blks %llu }"
#define ZILOG_TP_PRINTK_ARGS \
__entry->zl_lr_seq, __entry->zl_commit_lr_seq, \
__entry->zl_destroy_txg, __entry->zl_replaying_seq, \
__entry->zl_suspend, __entry->zl_suspending, \
__entry->zl_keep_first, __entry->zl_replay, \
__entry->zl_stop_sync, __entry->zl_logbias, __entry->zl_sync, \
__entry->zl_parse_error, __entry->zl_parse_blk_seq, \
__entry->zl_parse_lr_seq, __entry->zl_parse_blk_count, \
__entry->zl_parse_lr_count, __entry->zl_cur_used, \
__entry->zl_replay_time, __entry->zl_replay_blks
#define ITX_TP_STRUCT_ENTRY \
__field(itx_wr_state_t, itx_wr_state) \
__field(uint8_t, itx_sync) \
__field(zil_callback_t, itx_callback) \
__field(void *, itx_callback_data) \
__field(uint64_t, itx_oid) \
\
__field(uint64_t, lrc_txtype) \
__field(uint64_t, lrc_reclen) \
__field(uint64_t, lrc_txg) \
__field(uint64_t, lrc_seq)
#define ITX_TP_FAST_ASSIGN \
__entry->itx_wr_state = itx->itx_wr_state; \
__entry->itx_sync = itx->itx_sync; \
__entry->itx_callback = itx->itx_callback; \
__entry->itx_callback_data = itx->itx_callback_data; \
__entry->itx_oid = itx->itx_oid; \
\
__entry->lrc_txtype = itx->itx_lr.lrc_txtype; \
__entry->lrc_reclen = itx->itx_lr.lrc_reclen; \
__entry->lrc_txg = itx->itx_lr.lrc_txg; \
__entry->lrc_seq = itx->itx_lr.lrc_seq;
#define ITX_TP_PRINTK_FMT \
"itx { wr_state %u sync %u callback %p callback_data %p oid %llu" \
" { txtype %llu reclen %llu txg %llu seq %llu } }"
#define ITX_TP_PRINTK_ARGS \
__entry->itx_wr_state, __entry->itx_sync, __entry->itx_callback,\
__entry->itx_callback_data, __entry->itx_oid, \
__entry->lrc_txtype, __entry->lrc_reclen, __entry->lrc_txg, \
__entry->lrc_seq
#define ZCW_TP_STRUCT_ENTRY \
__field(lwb_t *, zcw_lwb) \
__field(boolean_t, zcw_done) \
__field(int, zcw_zio_error) \
#define ZCW_TP_FAST_ASSIGN \
__entry->zcw_lwb = zcw->zcw_lwb; \
__entry->zcw_done = zcw->zcw_done; \
__entry->zcw_zio_error = zcw->zcw_zio_error;
#define ZCW_TP_PRINTK_FMT \
"zcw { lwb %p done %u error %u }"
#define ZCW_TP_PRINTK_ARGS \
__entry->zcw_lwb, __entry->zcw_done, __entry->zcw_zio_error
/*
* Generic support for two argument tracepoints of the form:
*
* DTRACE_PROBE2(...,
* zilog_t *, ...,
* itx_t *, ...);
*/
/* BEGIN CSTYLED */
DECLARE_EVENT_CLASS(zfs_zil_process_itx_class,
TP_PROTO(zilog_t *zilog, itx_t *itx),
TP_ARGS(zilog, itx),
TP_STRUCT__entry(
ZILOG_TP_STRUCT_ENTRY
ITX_TP_STRUCT_ENTRY
),
TP_fast_assign(
ZILOG_TP_FAST_ASSIGN
ITX_TP_FAST_ASSIGN
),
TP_printk(
ZILOG_TP_PRINTK_FMT " " ITX_TP_PRINTK_FMT,
ZILOG_TP_PRINTK_ARGS, ITX_TP_PRINTK_ARGS)
);
/* END CSTYLED */
/* BEGIN CSTYLED */
#define DEFINE_ZIL_PROCESS_ITX_EVENT(name) \
DEFINE_EVENT(zfs_zil_process_itx_class, name, \
TP_PROTO(zilog_t *zilog, itx_t *itx), \
TP_ARGS(zilog, itx))
DEFINE_ZIL_PROCESS_ITX_EVENT(zfs_zil__process__commit__itx);
DEFINE_ZIL_PROCESS_ITX_EVENT(zfs_zil__process__normal__itx);
/* END CSTYLED */
/*
* Generic support for two argument tracepoints of the form:
*
* DTRACE_PROBE2(...,
* zilog_t *, ...,
* zil_commit_waiter_t *, ...);
*/
/* BEGIN CSTYLED */
DECLARE_EVENT_CLASS(zfs_zil_commit_io_error_class,
TP_PROTO(zilog_t *zilog, zil_commit_waiter_t *zcw),
TP_ARGS(zilog, zcw),
TP_STRUCT__entry(
ZILOG_TP_STRUCT_ENTRY
ZCW_TP_STRUCT_ENTRY
),
TP_fast_assign(
ZILOG_TP_FAST_ASSIGN
ZCW_TP_FAST_ASSIGN
),
TP_printk(
ZILOG_TP_PRINTK_FMT " " ZCW_TP_PRINTK_FMT,
ZILOG_TP_PRINTK_ARGS, ZCW_TP_PRINTK_ARGS)
);
/* BEGIN CSTYLED */
#define DEFINE_ZIL_COMMIT_IO_ERROR_EVENT(name) \
DEFINE_EVENT(zfs_zil_commit_io_error_class, name, \
TP_PROTO(zilog_t *zilog, zil_commit_waiter_t *zcw), \
TP_ARGS(zilog, zcw))
DEFINE_ZIL_COMMIT_IO_ERROR_EVENT(zfs_zil__commit__io__error);
/* END CSTYLED */
#endif /* _TRACE_ZIL_H */
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH sys
#define TRACE_INCLUDE_FILE trace_zil
#include <trace/define_trace.h>
#else
DEFINE_DTRACE_PROBE2(zil__process__commit__itx);
DEFINE_DTRACE_PROBE2(zil__process__normal__itx);
DEFINE_DTRACE_PROBE2(zil__commit__io__error);
#endif /* HAVE_DECLARE_EVENT_CLASS */
#endif /* _KERNEL */
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