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 #undef TRACE_SYSTEM_VAR
  28 #define TRACE_SYSTEM_VAR zfs_zrlock
  29
  30 #if !defined(_TRACE_ZRLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
  31 #define _TRACE_ZRLOCK_H
  32
  33 #include <linux/tracepoint.h>
  34 #include <sys/types.h>
  35
  36 /*
  37  * Generic support for two argument tracepoints of the form:
  38  *
  39  * DTRACE_PROBE2(...,
  40  *     zrlock_t *, ...,
  41  *     uint32_t, ...);
  42  */
  43
  44 DECLARE_EVENT_CLASS(zfs_zrlock_class,
  45         TP_PROTO(zrlock_t *zrl, uint32_t n),
  46         TP_ARGS(zrl, n),
  47         TP_STRUCT__entry(
  48             __field(int32_t,            refcount)
  49 #ifdef  ZFS_DEBUG
  50             __field(pid_t,              owner_pid)
  51             __field(const char *,       caller)
  52 #endif
  53             __field(uint32_t,           n)
  54         ),
  55         TP_fast_assign(
  56             __entry->refcount   = zrl->zr_refcount;
  57 #ifdef  ZFS_DEBUG
  58             __entry->owner_pid  = zrl->zr_owner ? zrl->zr_owner->pid : 0;
  59             __entry->caller     = zrl->zr_caller;
  60 #endif
  61             __entry->n          = n;
  62         ),
  63 #ifdef  ZFS_DEBUG
  64         TP_printk("zrl { refcount %d owner_pid %d caller %s } n %u",
  65             __entry->refcount, __entry->owner_pid, __entry->caller,
  66             __entry->n)
  67 #else
  68         TP_printk("zrl { refcount %d } n %u",
  69             __entry->refcount, __entry->n)
  70 #endif
  71 );
  72
  73 #define DEFINE_ZRLOCK_EVENT(name) \
  74 DEFINE_EVENT(zfs_zrlock_class, name, \
  75         TP_PROTO(zrlock_t *zrl, uint32_t n), \
  76         TP_ARGS(zrl, n))
  77 DEFINE_ZRLOCK_EVENT(zfs_zrlock__reentry);
  78
  79 #endif /* _TRACE_ZRLOCK_H */
  80
  81 #undef TRACE_INCLUDE_PATH
  82 #undef TRACE_INCLUDE_FILE
  83 #define TRACE_INCLUDE_PATH sys
  84 #define TRACE_INCLUDE_FILE trace_zrlock
  85 #include <trace/define_trace.h>
  86
  87 #endif /* _KERNEL && HAVE_DECLARE_EVENT_CLASS */