granicus.if.org Git - zfs/blob - include/sys/trace_zrlock.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) && defined(HAVE_DECLARE_EVENT_CLASS)
  23
  24 #undef TRACE_SYSTEM
  25 #define TRACE_SYSTEM zfs
  26
  27 #if !defined(_TRACE_ZRLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
  28 #define _TRACE_ZRLOCK_H
  29
  30 #include <linux/tracepoint.h>
  31 #include <sys/types.h>
  32
  33 /*
  34  * Generic support for two argument tracepoints of the form:
  35  *
  36  * DTRACE_PROBE2(...,
  37  *     zrlock_t *, ...,
  38  *     uint32_t, ...);
  39  */
  40
  41 DECLARE_EVENT_CLASS(zfs_zrlock_class,
  42         TP_PROTO(zrlock_t *zrl, uint32_t n),
  43         TP_ARGS(zrl, n),
  44         TP_STRUCT__entry(
  45             __field(int32_t,            refcount)
  46 #ifdef  ZFS_DEBUG
  47             __field(pid_t,              owner_pid)
  48             __field(const char *,       caller)
  49 #endif
  50             __field(uint32_t,           n)
  51         ),
  52         TP_fast_assign(
  53             __entry->refcount   = zrl->zr_refcount;
  54 #ifdef  ZFS_DEBUG
  55             __entry->owner_pid  = zrl->zr_owner ? zrl->zr_owner->pid : 0;
  56             __entry->caller     = zrl->zr_caller;
  57 #endif
  58             __entry->n          = n;
  59         ),
  60 #ifdef  ZFS_DEBUG
  61         TP_printk("zrl { refcount %d owner_pid %d caller %s } n %u",
  62             __entry->refcount, __entry->owner_pid, __entry->caller,
  63             __entry->n)
  64 #else
  65         TP_printk("zrl { refcount %d } n %u",
  66             __entry->refcount, __entry->n)
  67 #endif
  68 );
  69
  70 #define DEFINE_ZRLOCK_EVENT(name) \
  71 DEFINE_EVENT(zfs_zrlock_class, name, \
  72         TP_PROTO(zrlock_t *zrl, uint32_t n), \
  73         TP_ARGS(zrl, n))
  74 DEFINE_ZRLOCK_EVENT(zfs_zrlock__reentry);
  75
  76 #endif /* _TRACE_ZRLOCK_H */
  77
  78 #undef TRACE_INCLUDE_PATH
  79 #undef TRACE_INCLUDE_FILE
  80 #define TRACE_INCLUDE_PATH sys
  81 #define TRACE_INCLUDE_FILE trace_zrlock
  82 #include <trace/define_trace.h>
  83
  84 #endif /* _KERNEL && HAVE_DECLARE_EVENT_CLASS */