1 #undef TRACE_SYSTEM 2 #define TRACE_SYSTEM writeback 3 4 #if !defined(_TRACE_WRITEBACK_H) || defined(TRACE_HEADER_MULTI_READ) 5 #define _TRACE_WRITEBACK_H 6 7 #include <linux/backing-dev.h> 8 #include <linux/device.h> 9 #include <linux/writeback.h> 10 11 #define show_inode_state(state) \ 12 __print_flags(state, "|", \ 13 {I_DIRTY_SYNC, "I_DIRTY_SYNC"}, \ 14 {I_DIRTY_DATASYNC, "I_DIRTY_DATASYNC"}, \ 15 {I_DIRTY_PAGES, "I_DIRTY_PAGES"}, \ 16 {I_NEW, "I_NEW"}, \ 17 {I_WILL_FREE, "I_WILL_FREE"}, \ 18 {I_FREEING, "I_FREEING"}, \ 19 {I_CLEAR, "I_CLEAR"}, \ 20 {I_SYNC, "I_SYNC"}, \ 21 {I_REFERENCED, "I_REFERENCED"} \ 22 ) 23 24 struct wb_writeback_work; 25 26 DECLARE_EVENT_CLASS(writeback_work_class, 27 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), 28 TP_ARGS(bdi, work), 29 TP_STRUCT__entry( 30 __array(char, name, 32) 31 __field(long, nr_pages) 32 __field(dev_t, sb_dev) 33 __field(int, sync_mode) 34 __field(int, for_kupdate) 35 __field(int, range_cyclic) 36 __field(int, for_background) 37 ), 38 TP_fast_assign( 39 strncpy(__entry->name, dev_name(bdi->dev), 32); 40 __entry->nr_pages = work->nr_pages; 41 __entry->sb_dev = work->sb ? work->sb->s_dev : 0; 42 __entry->sync_mode = work->sync_mode; 43 __entry->for_kupdate = work->for_kupdate; 44 __entry->range_cyclic = work->range_cyclic; 45 __entry->for_background = work->for_background; 46 ), 47 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d " 48 "kupdate=%d range_cyclic=%d background=%d", 49 __entry->name, 50 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev), 51 __entry->nr_pages, 52 __entry->sync_mode, 53 __entry->for_kupdate, 54 __entry->range_cyclic, 55 __entry->for_background 56 ) 57 ); 58 #define DEFINE_WRITEBACK_WORK_EVENT(name) \ 59 DEFINE_EVENT(writeback_work_class, name, \ 60 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \ 61 TP_ARGS(bdi, work)) 62 DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread); 63 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue); 64 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec); 65 DEFINE_WRITEBACK_WORK_EVENT(writeback_start); 66 DEFINE_WRITEBACK_WORK_EVENT(writeback_written); 67 DEFINE_WRITEBACK_WORK_EVENT(writeback_wait); 68 69 TRACE_EVENT(writeback_pages_written, 70 TP_PROTO(long pages_written), 71 TP_ARGS(pages_written), 72 TP_STRUCT__entry( 73 __field(long, pages) 74 ), 75 TP_fast_assign( 76 __entry->pages = pages_written; 77 ), 78 TP_printk("%ld", __entry->pages) 79 ); 80 81 DECLARE_EVENT_CLASS(writeback_class, 82 TP_PROTO(struct backing_dev_info *bdi), 83 TP_ARGS(bdi), 84 TP_STRUCT__entry( 85 __array(char, name, 32) 86 ), 87 TP_fast_assign( 88 strncpy(__entry->name, dev_name(bdi->dev), 32); 89 ), 90 TP_printk("bdi %s", 91 __entry->name 92 ) 93 ); 94 #define DEFINE_WRITEBACK_EVENT(name) \ 95 DEFINE_EVENT(writeback_class, name, \ 96 TP_PROTO(struct backing_dev_info *bdi), \ 97 TP_ARGS(bdi)) 98 99 DEFINE_WRITEBACK_EVENT(writeback_nowork); 100 DEFINE_WRITEBACK_EVENT(writeback_wake_background); 101 DEFINE_WRITEBACK_EVENT(writeback_wake_thread); 102 DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread); 103 DEFINE_WRITEBACK_EVENT(writeback_bdi_register); 104 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister); 105 DEFINE_WRITEBACK_EVENT(writeback_thread_start); 106 DEFINE_WRITEBACK_EVENT(writeback_thread_stop); 107 DEFINE_WRITEBACK_EVENT(balance_dirty_start); 108 DEFINE_WRITEBACK_EVENT(balance_dirty_wait); 109 110 TRACE_EVENT(balance_dirty_written, 111 112 TP_PROTO(struct backing_dev_info *bdi, int written), 113 114 TP_ARGS(bdi, written), 115 116 TP_STRUCT__entry( 117 __array(char, name, 32) 118 __field(int, written) 119 ), 120 121 TP_fast_assign( 122 strncpy(__entry->name, dev_name(bdi->dev), 32); 123 __entry->written = written; 124 ), 125 126 TP_printk("bdi %s written %d", 127 __entry->name, 128 __entry->written 129 ) 130 ); 131 132 DECLARE_EVENT_CLASS(wbc_class, 133 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), 134 TP_ARGS(wbc, bdi), 135 TP_STRUCT__entry( 136 __array(char, name, 32) 137 __field(long, nr_to_write) 138 __field(long, pages_skipped) 139 __field(int, sync_mode) 140 __field(int, for_kupdate) 141 __field(int, for_background) 142 __field(int, for_reclaim) 143 __field(int, range_cyclic) 144 __field(long, range_start) 145 __field(long, range_end) 146 ), 147 148 TP_fast_assign( 149 strncpy(__entry->name, dev_name(bdi->dev), 32); 150 __entry->nr_to_write = wbc->nr_to_write; 151 __entry->pages_skipped = wbc->pages_skipped; 152 __entry->sync_mode = wbc->sync_mode; 153 __entry->for_kupdate = wbc->for_kupdate; 154 __entry->for_background = wbc->for_background; 155 __entry->for_reclaim = wbc->for_reclaim; 156 __entry->range_cyclic = wbc->range_cyclic; 157 __entry->range_start = (long)wbc->range_start; 158 __entry->range_end = (long)wbc->range_end; 159 ), 160 161 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d " 162 "bgrd=%d reclm=%d cyclic=%d " 163 "start=0x%lx end=0x%lx", 164 __entry->name, 165 __entry->nr_to_write, 166 __entry->pages_skipped, 167 __entry->sync_mode, 168 __entry->for_kupdate, 169 __entry->for_background, 170 __entry->for_reclaim, 171 __entry->range_cyclic, 172 __entry->range_start, 173 __entry->range_end) 174 ) 175 176 #define DEFINE_WBC_EVENT(name) \ 177 DEFINE_EVENT(wbc_class, name, \ 178 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \ 179 TP_ARGS(wbc, bdi)) 180 DEFINE_WBC_EVENT(wbc_writepage); 181 182 TRACE_EVENT(writeback_queue_io, 183 TP_PROTO(struct bdi_writeback *wb, 184 unsigned long *older_than_this, 185 int moved), 186 TP_ARGS(wb, older_than_this, moved), 187 TP_STRUCT__entry( 188 __array(char, name, 32) 189 __field(unsigned long, older) 190 __field(long, age) 191 __field(int, moved) 192 ), 193 TP_fast_assign( 194 strncpy(__entry->name, dev_name(wb->bdi->dev), 32); 195 __entry->older = older_than_this ? *older_than_this : 0; 196 __entry->age = older_than_this ? 197 (jiffies - *older_than_this) * 1000 / HZ : -1; 198 __entry->moved = moved; 199 ), 200 TP_printk("bdi %s: older=%lu age=%ld enqueue=%d", 201 __entry->name, 202 __entry->older, /* older_than_this in jiffies */ 203 __entry->age, /* older_than_this in relative milliseconds */ 204 __entry->moved) 205 ); 206 207 DECLARE_EVENT_CLASS(writeback_congest_waited_template, 208 209 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 210 211 TP_ARGS(usec_timeout, usec_delayed), 212 213 TP_STRUCT__entry( 214 __field( unsigned int, usec_timeout ) 215 __field( unsigned int, usec_delayed ) 216 ), 217 218 TP_fast_assign( 219 __entry->usec_timeout = usec_timeout; 220 __entry->usec_delayed = usec_delayed; 221 ), 222 223 TP_printk("usec_timeout=%u usec_delayed=%u", 224 __entry->usec_timeout, 225 __entry->usec_delayed) 226 ); 227 228 DEFINE_EVENT(writeback_congest_waited_template, writeback_congestion_wait, 229 230 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 231 232 TP_ARGS(usec_timeout, usec_delayed) 233 ); 234 235 DEFINE_EVENT(writeback_congest_waited_template, writeback_wait_iff_congested, 236 237 TP_PROTO(unsigned int usec_timeout, unsigned int usec_delayed), 238 239 TP_ARGS(usec_timeout, usec_delayed) 240 ); 241 242 DECLARE_EVENT_CLASS(writeback_single_inode_template, 243 244 TP_PROTO(struct inode *inode, 245 struct writeback_control *wbc, 246 unsigned long nr_to_write 247 ), 248 249 TP_ARGS(inode, wbc, nr_to_write), 250 251 TP_STRUCT__entry( 252 __array(char, name, 32) 253 __field(unsigned long, ino) 254 __field(unsigned long, state) 255 __field(unsigned long, age) 256 __field(unsigned long, writeback_index) 257 __field(long, nr_to_write) 258 __field(unsigned long, wrote) 259 ), 260 261 TP_fast_assign( 262 strncpy(__entry->name, 263 dev_name(inode->i_mapping->backing_dev_info->dev), 32); 264 __entry->ino = inode->i_ino; 265 __entry->state = inode->i_state; 266 __entry->age = (jiffies - inode->dirtied_when) * 267 1000 / HZ; 268 __entry->writeback_index = inode->i_mapping->writeback_index; 269 __entry->nr_to_write = nr_to_write; 270 __entry->wrote = nr_to_write - wbc->nr_to_write; 271 ), 272 273 TP_printk("bdi %s: ino=%lu state=%s age=%lu " 274 "index=%lu to_write=%ld wrote=%lu", 275 __entry->name, 276 __entry->ino, 277 show_inode_state(__entry->state), 278 __entry->age, 279 __entry->writeback_index, 280 __entry->nr_to_write, 281 __entry->wrote 282 ) 283 ); 284 285 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode_requeue, 286 TP_PROTO(struct inode *inode, 287 struct writeback_control *wbc, 288 unsigned long nr_to_write), 289 TP_ARGS(inode, wbc, nr_to_write) 290 ); 291 292 DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode, 293 TP_PROTO(struct inode *inode, 294 struct writeback_control *wbc, 295 unsigned long nr_to_write), 296 TP_ARGS(inode, wbc, nr_to_write) 297 ); 298 299 #endif /* _TRACE_WRITEBACK_H */ 300 301 /* This part must be outside protection */ 302 #include <trace/define_trace.h> 303