FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/linux/zfs/sys/trace_vdev.h

     /*
      * 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)
    #if defined(HAVE_DECLARE_EVENT_CLASS)
    
    /*
     * If tracepoints are available define dtrace_probe events for vdev
     * related probes.  Definitions in include/os/linux/spl/sys/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 */
    
    #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))
    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)
   );
   
   #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))
   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 prototypes for those functions.  See
    * include/os/linux/spl/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 */

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