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 https://opensource.org/licenses/CDDL-1.0. 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 #undef TRACE_SYSTEM 26 #define TRACE_SYSTEM zfs 27 28 #undef TRACE_SYSTEM_VAR 29 #define TRACE_SYSTEM_VAR zfs_zrlock 30 31 #if !defined(_TRACE_ZRLOCK_H) || defined(TRACE_HEADER_MULTI_READ) 32 #define _TRACE_ZRLOCK_H 33 34 #include <linux/tracepoint.h> 35 #include <sys/types.h> 36 37 /* 38 * Generic support for two argument tracepoints of the form: 39 * 40 * DTRACE_PROBE2(..., 41 * zrlock_t *, ..., 42 * uint32_t, ...); 43 */ 44 /* BEGIN CSTYLED */ 45 DECLARE_EVENT_CLASS(zfs_zrlock_class, 46 TP_PROTO(zrlock_t *zrl, kthread_t *owner, uint32_t n), 47 TP_ARGS(zrl, owner, n), 48 TP_STRUCT__entry( 49 __field(int32_t, refcount) 50 #ifdef ZFS_DEBUG 51 __field(pid_t, owner_pid) 52 __field(const char *, caller) 53 #endif 54 __field(uint32_t, n) 55 ), 56 TP_fast_assign( 57 __entry->refcount = zrl->zr_refcount; 58 #ifdef ZFS_DEBUG 59 __entry->owner_pid = owner ? owner->pid : 0; 60 __entry->caller = zrl->zr_caller ? zrl->zr_caller : "(null)"; 61 #endif 62 __entry->n = n; 63 ), 64 #ifdef ZFS_DEBUG 65 TP_printk("zrl { refcount %d owner_pid %d caller %s } n %u", 66 __entry->refcount, __entry->owner_pid, __entry->caller, 67 __entry->n) 68 #else 69 TP_printk("zrl { refcount %d } n %u", 70 __entry->refcount, __entry->n) 71 #endif 72 ); 73 /* END CSTYLED */ 74 75 #define DEFINE_ZRLOCK_EVENT(name) \ 76 DEFINE_EVENT(zfs_zrlock_class, name, \ 77 TP_PROTO(zrlock_t *zrl, kthread_t *owner, uint32_t n), \ 78 TP_ARGS(zrl, owner, n)) 79 DEFINE_ZRLOCK_EVENT(zfs_zrlock__reentry); 80 81 #endif /* _TRACE_ZRLOCK_H */ 82 83 #undef TRACE_INCLUDE_PATH 84 #undef TRACE_INCLUDE_FILE 85 #define TRACE_INCLUDE_PATH sys 86 #define TRACE_INCLUDE_FILE trace_zrlock 87 #include <trace/define_trace.h> 88 89 #else 90 91 DEFINE_DTRACE_PROBE3(zrlock__reentry); 92 93 #endif /* HAVE_DECLARE_EVENT_CLASS */ 94 #endif /* _KERNEL */ 95