1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 #if defined(_KERNEL) 24 #if defined(HAVE_DECLARE_EVENT_CLASS) 25 26 #undef TRACE_SYSTEM 27 #define TRACE_SYSTEM zfs 28 29 #undef TRACE_SYSTEM_VAR 30 #define TRACE_SYSTEM_VAR zfs_dbuf 31 32 #if !defined(_TRACE_DBUF_H) || defined(TRACE_HEADER_MULTI_READ) 33 #define _TRACE_DBUF_H 34 35 #include <linux/tracepoint.h> 36 #include <sys/types.h> 37 38 #ifndef TRACE_DBUF_MSG_MAX 39 #define TRACE_DBUF_MSG_MAX 512 40 #endif 41 42 /* 43 * Generic support for two argument tracepoints of the form: 44 * 45 * DTRACE_PROBE2(..., 46 * dmu_buf_impl_t *, ..., 47 * zio_t *, ...); 48 */ 49 #define DBUF_TP_STRUCT_ENTRY_OS_SPA \ 50 (db != NULL && \ 51 POINTER_IS_VALID(DB_DNODE(db)->dn_objset)) \ 52 ? spa_name(DB_DNODE(db)->dn_objset->os_spa) : "NULL" 53 54 #define DBUF_TP_STRUCT_ENTRY \ 55 __string(os_spa, DBUF_TP_STRUCT_ENTRY_OS_SPA) \ 56 __field(uint64_t, ds_object) \ 57 __field(uint64_t, db_object) \ 58 __field(uint64_t, db_level) \ 59 __field(uint64_t, db_blkid) \ 60 __field(uint64_t, db_offset) \ 61 __field(uint64_t, db_size) \ 62 __field(uint64_t, db_state) \ 63 __field(int64_t, db_holds) 64 65 #define DBUF_TP_FAST_ASSIGN \ 66 if (db != NULL) { \ 67 __assign_str_impl(os_spa, DBUF_TP_STRUCT_ENTRY_OS_SPA); \ 68 __entry->ds_object = db->db_objset->os_dsl_dataset ? \ 69 db->db_objset->os_dsl_dataset->ds_object : 0; \ 70 \ 71 __entry->db_object = db->db.db_object; \ 72 __entry->db_level = db->db_level; \ 73 __entry->db_blkid = db->db_blkid; \ 74 __entry->db_offset = db->db.db_offset; \ 75 __entry->db_size = db->db.db_size; \ 76 __entry->db_state = db->db_state; \ 77 __entry->db_holds = zfs_refcount_count(&db->db_holds); \ 78 } else { \ 79 __assign_str_impl(os_spa, DBUF_TP_STRUCT_ENTRY_OS_SPA); \ 80 __entry->ds_object = 0; \ 81 __entry->db_object = 0; \ 82 __entry->db_level = 0; \ 83 __entry->db_blkid = 0; \ 84 __entry->db_offset = 0; \ 85 __entry->db_size = 0; \ 86 __entry->db_state = 0; \ 87 __entry->db_holds = 0; \ 88 } 89 90 #define DBUF_TP_PRINTK_FMT \ 91 "dbuf { spa \"%s\" objset %llu object %llu level %llu " \ 92 "blkid %llu offset %llu size %llu state %llu holds %lld }" 93 94 #define DBUF_TP_PRINTK_ARGS \ 95 __get_str(os_spa), __entry->ds_object, \ 96 __entry->db_object, __entry->db_level, \ 97 __entry->db_blkid, __entry->db_offset, \ 98 __entry->db_size, __entry->db_state, __entry->db_holds 99 100 /* BEGIN CSTYLED */ 101 DECLARE_EVENT_CLASS(zfs_dbuf_class, 102 TP_PROTO(dmu_buf_impl_t *db, zio_t *zio), 103 TP_ARGS(db, zio), 104 TP_STRUCT__entry(DBUF_TP_STRUCT_ENTRY), 105 TP_fast_assign(DBUF_TP_FAST_ASSIGN), 106 TP_printk(DBUF_TP_PRINTK_FMT, DBUF_TP_PRINTK_ARGS) 107 ); 108 109 DECLARE_EVENT_CLASS(zfs_dbuf_state_class, 110 TP_PROTO(dmu_buf_impl_t *db, const char *why), 111 TP_ARGS(db, why), 112 TP_STRUCT__entry(DBUF_TP_STRUCT_ENTRY), 113 TP_fast_assign(DBUF_TP_FAST_ASSIGN), 114 TP_printk(DBUF_TP_PRINTK_FMT, DBUF_TP_PRINTK_ARGS) 115 ); 116 /* END CSTYLED */ 117 118 #define DEFINE_DBUF_EVENT(name) \ 119 DEFINE_EVENT(zfs_dbuf_class, name, \ 120 TP_PROTO(dmu_buf_impl_t *db, zio_t *zio), \ 121 TP_ARGS(db, zio)) 122 DEFINE_DBUF_EVENT(zfs_blocked__read); 123 124 #define DEFINE_DBUF_STATE_EVENT(name) \ 125 DEFINE_EVENT(zfs_dbuf_state_class, name, \ 126 TP_PROTO(dmu_buf_impl_t *db, const char *why), \ 127 TP_ARGS(db, why)) 128 DEFINE_DBUF_STATE_EVENT(zfs_dbuf__state_change); 129 130 /* BEGIN CSTYLED */ 131 DECLARE_EVENT_CLASS(zfs_dbuf_evict_one_class, 132 TP_PROTO(dmu_buf_impl_t *db, multilist_sublist_t *mls), 133 TP_ARGS(db, mls), 134 TP_STRUCT__entry(DBUF_TP_STRUCT_ENTRY), 135 TP_fast_assign(DBUF_TP_FAST_ASSIGN), 136 TP_printk(DBUF_TP_PRINTK_FMT, DBUF_TP_PRINTK_ARGS) 137 ); 138 /* END CSTYLED */ 139 140 #define DEFINE_DBUF_EVICT_ONE_EVENT(name) \ 141 DEFINE_EVENT(zfs_dbuf_evict_one_class, name, \ 142 TP_PROTO(dmu_buf_impl_t *db, multilist_sublist_t *mls), \ 143 TP_ARGS(db, mls)) 144 DEFINE_DBUF_EVICT_ONE_EVENT(zfs_dbuf__evict__one); 145 146 #endif /* _TRACE_DBUF_H */ 147 148 #undef TRACE_INCLUDE_PATH 149 #undef TRACE_INCLUDE_FILE 150 #define TRACE_INCLUDE_PATH sys 151 #define TRACE_INCLUDE_FILE trace_dbuf 152 #include <trace/define_trace.h> 153 154 #else 155 156 DEFINE_DTRACE_PROBE2(blocked__read); 157 DEFINE_DTRACE_PROBE2(dbuf__evict__one); 158 DEFINE_DTRACE_PROBE2(dbuf__state_change); 159 160 #endif /* HAVE_DECLARE_EVENT_CLASS */ 161 #endif /* _KERNEL */ 162