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/writeback.h> 9 10 struct wb_writeback_work; 11 12 DECLARE_EVENT_CLASS(writeback_work_class, 13 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), 14 TP_ARGS(bdi, work), 15 TP_STRUCT__entry( 16 __array(char, name, 32) 17 __field(long, nr_pages) 18 __field(dev_t, sb_dev) 19 __field(int, sync_mode) 20 __field(int, for_kupdate) 21 __field(int, range_cyclic) 22 __field(int, for_background) 23 ), 24 TP_fast_assign( 25 strncpy(__entry->name, dev_name(bdi->dev), 32); 26 __entry->nr_pages = work->nr_pages; 27 __entry->sb_dev = work->sb ? work->sb->s_dev : 0; 28 __entry->sync_mode = work->sync_mode; 29 __entry->for_kupdate = work->for_kupdate; 30 __entry->range_cyclic = work->range_cyclic; 31 __entry->for_background = work->for_background; 32 ), 33 TP_printk("bdi %s: sb_dev %d:%d nr_pages=%ld sync_mode=%d " 34 "kupdate=%d range_cyclic=%d background=%d", 35 __entry->name, 36 MAJOR(__entry->sb_dev), MINOR(__entry->sb_dev), 37 __entry->nr_pages, 38 __entry->sync_mode, 39 __entry->for_kupdate, 40 __entry->range_cyclic, 41 __entry->for_background 42 ) 43 ); 44 #define DEFINE_WRITEBACK_WORK_EVENT(name) \ 45 DEFINE_EVENT(writeback_work_class, name, \ 46 TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \ 47 TP_ARGS(bdi, work)) 48 DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread); 49 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue); 50 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec); 51 52 TRACE_EVENT(writeback_pages_written, 53 TP_PROTO(long pages_written), 54 TP_ARGS(pages_written), 55 TP_STRUCT__entry( 56 __field(long, pages) 57 ), 58 TP_fast_assign( 59 __entry->pages = pages_written; 60 ), 61 TP_printk("%ld", __entry->pages) 62 ); 63 64 DECLARE_EVENT_CLASS(writeback_class, 65 TP_PROTO(struct backing_dev_info *bdi), 66 TP_ARGS(bdi), 67 TP_STRUCT__entry( 68 __array(char, name, 32) 69 ), 70 TP_fast_assign( 71 strncpy(__entry->name, dev_name(bdi->dev), 32); 72 ), 73 TP_printk("bdi %s", 74 __entry->name 75 ) 76 ); 77 #define DEFINE_WRITEBACK_EVENT(name) \ 78 DEFINE_EVENT(writeback_class, name, \ 79 TP_PROTO(struct backing_dev_info *bdi), \ 80 TP_ARGS(bdi)) 81 82 DEFINE_WRITEBACK_EVENT(writeback_nowork); 83 DEFINE_WRITEBACK_EVENT(writeback_bdi_register); 84 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister); 85 DEFINE_WRITEBACK_EVENT(writeback_thread_start); 86 DEFINE_WRITEBACK_EVENT(writeback_thread_stop); 87 88 DECLARE_EVENT_CLASS(wbc_class, 89 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), 90 TP_ARGS(wbc, bdi), 91 TP_STRUCT__entry( 92 __array(char, name, 32) 93 __field(long, nr_to_write) 94 __field(long, pages_skipped) 95 __field(int, sync_mode) 96 __field(int, nonblocking) 97 __field(int, encountered_congestion) 98 __field(int, for_kupdate) 99 __field(int, for_background) 100 __field(int, for_reclaim) 101 __field(int, range_cyclic) 102 __field(int, more_io) 103 __field(unsigned long, older_than_this) 104 __field(long, range_start) 105 __field(long, range_end) 106 ), 107 108 TP_fast_assign( 109 strncpy(__entry->name, dev_name(bdi->dev), 32); 110 __entry->nr_to_write = wbc->nr_to_write; 111 __entry->pages_skipped = wbc->pages_skipped; 112 __entry->sync_mode = wbc->sync_mode; 113 __entry->for_kupdate = wbc->for_kupdate; 114 __entry->for_background = wbc->for_background; 115 __entry->for_reclaim = wbc->for_reclaim; 116 __entry->range_cyclic = wbc->range_cyclic; 117 __entry->more_io = wbc->more_io; 118 __entry->older_than_this = wbc->older_than_this ? 119 *wbc->older_than_this : 0; 120 __entry->range_start = (long)wbc->range_start; 121 __entry->range_end = (long)wbc->range_end; 122 ), 123 124 TP_printk("bdi %s: towrt=%ld skip=%ld mode=%d kupd=%d " 125 "bgrd=%d reclm=%d cyclic=%d more=%d older=0x%lx " 126 "start=0x%lx end=0x%lx", 127 __entry->name, 128 __entry->nr_to_write, 129 __entry->pages_skipped, 130 __entry->sync_mode, 131 __entry->for_kupdate, 132 __entry->for_background, 133 __entry->for_reclaim, 134 __entry->range_cyclic, 135 __entry->more_io, 136 __entry->older_than_this, 137 __entry->range_start, 138 __entry->range_end) 139 ) 140 141 #define DEFINE_WBC_EVENT(name) \ 142 DEFINE_EVENT(wbc_class, name, \ 143 TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi), \ 144 TP_ARGS(wbc, bdi)) 145 DEFINE_WBC_EVENT(wbc_writeback_start); 146 DEFINE_WBC_EVENT(wbc_writeback_written); 147 DEFINE_WBC_EVENT(wbc_writeback_wait); 148 DEFINE_WBC_EVENT(wbc_balance_dirty_start); 149 DEFINE_WBC_EVENT(wbc_balance_dirty_written); 150 DEFINE_WBC_EVENT(wbc_balance_dirty_wait); 151 152 #endif /* _TRACE_WRITEBACK_H */ 153 154 /* This part must be outside protection */ 155 #include <trace/define_trace.h> 156