include/sys/trace_vdev.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 #if defined(_KERNEL)
  23 #if defined(HAVE_DECLARE_EVENT_CLASS)
  24
  25 /*
  26  * If tracepoints are available define dtrace_probe events for vdev
  27  * related probes.  Definitions in usr/include/trace.h will map
  28  * DTRACE_PROBE* calls to tracepoints.
  29  */
  30
  31 #undef TRACE_SYSTEM
  32 #define TRACE_SYSTEM zfs
  33
  34 #undef TRACE_SYSTEM_VAR
  35 #define TRACE_SYSTEM_VAR zfs_vdev
  36
  37 #if !defined(_TRACE_VDEV_H) || defined(TRACE_HEADER_MULTI_READ)
  38 #define _TRACE_VDEV_H
  39
  40 #include <linux/tracepoint.h>
  41 #include <sys/types.h>
  42
  43 /*
  44  * Generic support for three argument tracepoints of the form:
  45  *
  46  * DTRACE_PROBE3(...,
  47  *     spa_t *, ...,
  48  *     uint64_t, ...,
  49  *     uint64_t, ...);
  50  */
  51 /* BEGIN CSTYLED */
  52 DECLARE_EVENT_CLASS(zfs_removing_class_3,
  53         TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size),
  54         TP_ARGS(spa, offset, size),
  55         TP_STRUCT__entry(
  56             __field(spa_t *,    vdev_spa)
  57             __field(uint64_t,   vdev_offset)
  58             __field(uint64_t,   vdev_size)
  59         ),
  60         TP_fast_assign(
  61             __entry->vdev_spa   = spa;
  62             __entry->vdev_offset = offset;
  63             __entry->vdev_size  = size;
  64         ),
  65         TP_printk("spa %p offset %llu size %llu",
  66             __entry->vdev_spa, __entry->vdev_offset,
  67             __entry->vdev_size)
  68 );
  69 /* END CSTYLED */
  70
  71 /* BEGIN CSTYLED */
  72 #define DEFINE_REMOVE_FREE_EVENT(name) \
  73 DEFINE_EVENT(zfs_removing_class_3, name, \
  74         TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size), \
  75         TP_ARGS(spa, offset, size))
  76 /* END CSTYLED */
  77 DEFINE_REMOVE_FREE_EVENT(zfs_remove__free__synced);
  78 DEFINE_REMOVE_FREE_EVENT(zfs_remove__free__unvisited);
  79
  80 /*
  81  * Generic support for four argument tracepoints of the form:
  82  *
  83  * DTRACE_PROBE4(...,
  84  *     spa_t *, ...,
  85  *     uint64_t, ...,
  86  *     uint64_t, ...,
  87  *     uint64_t, ...);
  88  */
  89 /* BEGIN CSTYLED */
  90 DECLARE_EVENT_CLASS(zfs_removing_class_4,
  91         TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size, uint64_t txg),
  92         TP_ARGS(spa, offset, size, txg),
  93         TP_STRUCT__entry(
  94             __field(spa_t *,    vdev_spa)
  95             __field(uint64_t,   vdev_offset)
  96             __field(uint64_t,   vdev_size)
  97             __field(uint64_t,   vdev_txg)
  98         ),
  99         TP_fast_assign(
 100             __entry->vdev_spa   = spa;
 101             __entry->vdev_offset = offset;
 102             __entry->vdev_size  = size;
 103             __entry->vdev_txg   = txg;
 104         ),
 105         TP_printk("spa %p offset %llu size %llu txg %llu",
 106             __entry->vdev_spa, __entry->vdev_offset,
 107             __entry->vdev_size, __entry->vdev_txg)
 108 );
 109
 110 /* BEGIN CSTYLED */
 111 #define DEFINE_REMOVE_FREE_EVENT_TXG(name) \
 112 DEFINE_EVENT(zfs_removing_class_4, name, \
 113         TP_PROTO(spa_t *spa, uint64_t offset, uint64_t size,uint64_t txg), \
 114         TP_ARGS(spa, offset, size, txg))
 115 /* END CSTYLED */
 116 DEFINE_REMOVE_FREE_EVENT_TXG(zfs_remove__free__inflight);
 117
 118 #endif /* _TRACE_VDEV_H */
 119
 120 #undef TRACE_INCLUDE_PATH
 121 #undef TRACE_INCLUDE_FILE
 122 #define TRACE_INCLUDE_PATH sys
 123 #define TRACE_INCLUDE_FILE trace_vdev
 124 #include <trace/define_trace.h>
 125
 126 #else
 127
 128 /*
 129  * When tracepoints are not available, a DEFINE_DTRACE_PROBE* macro is
 130  * needed for each DTRACE_PROBE.  These will be used to generate stub
 131  * tracing functions and protoypes for those functions.  See
 132  * include/sys/trace.h.
 133  */
 134
 135 DEFINE_DTRACE_PROBE3(remove__free__synced);
 136 DEFINE_DTRACE_PROBE3(remove__free__unvisited);
 137 DEFINE_DTRACE_PROBE4(remove__free__inflight);
 138
 139 #endif /* HAVE_DECLARE_EVENT_CLASS */
 140 #endif /* _KERNEL */