btrfs: add tracepoints for extent map shrinker events

[linux-2.6-block.git] / include / trace / events / btrfs.h

diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 8f2497603cb5bad2bf1082b40e5684fe16da7d1a..d2d94d7c3fb598d4efed5f08da09963be4e0a146 100644 (file)
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -2537,6 +2537,105 @@ TRACE_EVENT(btrfs_get_raid_extent_offset,
                        __entry->devid)
 );
 
+TRACE_EVENT(btrfs_extent_map_shrinker_count,
+
+       TP_PROTO(const struct btrfs_fs_info *fs_info, long nr),
+
+       TP_ARGS(fs_info, nr),
+
+       TP_STRUCT__entry_btrfs(
+               __field(        long,   nr      )
+       ),
+
+       TP_fast_assign_btrfs(fs_info,
+               __entry->nr             = nr;
+       ),
+
+       TP_printk_btrfs("nr=%ld", __entry->nr)
+);
+
+TRACE_EVENT(btrfs_extent_map_shrinker_scan_enter,
+
+       TP_PROTO(const struct btrfs_fs_info *fs_info, long nr_to_scan, long nr),
+
+       TP_ARGS(fs_info, nr_to_scan, nr),
+
+       TP_STRUCT__entry_btrfs(
+               __field(        long,   nr_to_scan      )
+               __field(        long,   nr              )
+               __field(        u64,    last_root_id    )
+               __field(        u64,    last_ino        )
+       ),
+
+       TP_fast_assign_btrfs(fs_info,
+               __entry->nr_to_scan     = nr_to_scan;
+               __entry->nr             = nr;
+               __entry->last_root_id   = fs_info->extent_map_shrinker_last_root;
+               __entry->last_ino       = fs_info->extent_map_shrinker_last_ino;
+       ),
+
+       TP_printk_btrfs("nr_to_scan=%ld nr=%ld last_root=%llu(%s) last_ino=%llu",
+                       __entry->nr_to_scan, __entry->nr,
+                       show_root_type(__entry->last_root_id), __entry->last_ino)
+);
+
+TRACE_EVENT(btrfs_extent_map_shrinker_scan_exit,
+
+       TP_PROTO(const struct btrfs_fs_info *fs_info, long nr_dropped, long nr),
+
+       TP_ARGS(fs_info, nr_dropped, nr),
+
+       TP_STRUCT__entry_btrfs(
+               __field(        long,   nr_dropped      )
+               __field(        long,   nr              )
+               __field(        u64,    last_root_id    )
+               __field(        u64,    last_ino        )
+       ),
+
+       TP_fast_assign_btrfs(fs_info,
+               __entry->nr_dropped     = nr_dropped;
+               __entry->nr             = nr;
+               __entry->last_root_id   = fs_info->extent_map_shrinker_last_root;
+               __entry->last_ino       = fs_info->extent_map_shrinker_last_ino;
+       ),
+
+       TP_printk_btrfs("nr_dropped=%ld nr=%ld last_root=%llu(%s) last_ino=%llu",
+                       __entry->nr_dropped, __entry->nr,
+                       show_root_type(__entry->last_root_id), __entry->last_ino)
+);
+
+TRACE_EVENT(btrfs_extent_map_shrinker_remove_em,
+
+       TP_PROTO(const struct btrfs_inode *inode, const struct extent_map *em),
+
+       TP_ARGS(inode, em),
+
+       TP_STRUCT__entry_btrfs(
+               __field(        u64,    ino             )
+               __field(        u64,    root_id         )
+               __field(        u64,    start           )
+               __field(        u64,    len             )
+               __field(        u64,    block_start     )
+               __field(        u32,    flags           )
+       ),
+
+       TP_fast_assign_btrfs(inode->root->fs_info,
+               __entry->ino            = btrfs_ino(inode);
+               __entry->root_id        = inode->root->root_key.objectid;
+               __entry->start          = em->start;
+               __entry->len            = em->len;
+               __entry->block_start    = em->block_start;
+               __entry->flags          = em->flags;
+       ),
+
+       TP_printk_btrfs(
+"ino=%llu root=%llu(%s) start=%llu len=%llu block_start=%llu(%s) flags=%s",
+                       __entry->ino, show_root_type(__entry->root_id),
+                       __entry->start, __entry->len,
+                       show_map_type(__entry->block_start),
+                       show_map_flags(__entry->flags))
+);
+
 #endif /* _TRACE_BTRFS_H */
 
 /* This part must be outside protection */