forked from Minki/linux
Btrfs: add file item tracepoints
While debugging truncate problems, I found that these tracepoints could help us quickly know what went wrong. Two sets of tracepoints are created to track regular/prealloc file item and inline file item respectively, I put inline as a separate one since what inline file items cares about are way less than the regular one. This adds four tracepoints: - btrfs_get_extent_show_fi_regular - btrfs_get_extent_show_fi_inline - btrfs_truncate_show_fi_regular - btrfs_truncate_show_fi_inline Cc: David Sterba <dsterba@suse.cz> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> [ formatting adjustments ] Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo
David Sterba
parent
dec95574f4
commit
09ed2f165c
@ -4401,9 +4401,17 @@ search_again:
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if (extent_type != BTRFS_FILE_EXTENT_INLINE) {
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item_end +=
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btrfs_file_extent_num_bytes(leaf, fi);
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trace_btrfs_truncate_show_fi_regular(
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BTRFS_I(inode), leaf, fi,
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found_key.offset);
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} else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
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item_end += btrfs_file_extent_inline_len(leaf,
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path->slots[0], fi);
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trace_btrfs_truncate_show_fi_inline(
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BTRFS_I(inode), leaf, fi, path->slots[0],
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found_key.offset);
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}
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item_end--;
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}
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@ -6828,11 +6836,18 @@ again:
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found_type == BTRFS_FILE_EXTENT_PREALLOC) {
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extent_end = extent_start +
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btrfs_file_extent_num_bytes(leaf, item);
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trace_btrfs_get_extent_show_fi_regular(inode, leaf, item,
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extent_start);
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} else if (found_type == BTRFS_FILE_EXTENT_INLINE) {
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size_t size;
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size = btrfs_file_extent_inline_len(leaf, path->slots[0], item);
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extent_end = ALIGN(extent_start + size,
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fs_info->sectorsize);
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trace_btrfs_get_extent_show_fi_inline(inode, leaf, item,
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path->slots[0],
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extent_start);
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}
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next:
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if (start >= extent_end) {
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@ -12,6 +12,7 @@ struct btrfs_root;
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struct btrfs_fs_info;
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struct btrfs_inode;
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struct extent_map;
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struct btrfs_file_extent_item;
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struct btrfs_ordered_extent;
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struct btrfs_delayed_ref_node;
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struct btrfs_delayed_tree_ref;
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@ -54,6 +55,12 @@ struct btrfs_qgroup_extent_record;
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(obj >= BTRFS_ROOT_TREE_OBJECTID && \
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obj <= BTRFS_QUOTA_TREE_OBJECTID)) ? __show_root_type(obj) : "-"
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#define show_fi_type(type) \
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__print_symbolic(type, \
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{ BTRFS_FILE_EXTENT_INLINE, "INLINE" }, \
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{ BTRFS_FILE_EXTENT_REG, "REG" }, \
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{ BTRFS_FILE_EXTENT_PREALLOC, "PREALLOC"})
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#define BTRFS_GROUP_FLAGS \
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{ BTRFS_BLOCK_GROUP_DATA, "DATA"}, \
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{ BTRFS_BLOCK_GROUP_SYSTEM, "SYSTEM"}, \
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@ -232,6 +239,138 @@ TRACE_EVENT_CONDITION(btrfs_get_extent,
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__entry->refs, __entry->compress_type)
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);
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/* file extent item */
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DECLARE_EVENT_CLASS(btrfs__file_extent_item_regular,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, u64 start),
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TP_ARGS(bi, l, fi, start),
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TP_STRUCT__entry_btrfs(
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__field( u64, root_obj )
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__field( u64, ino )
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__field( loff_t, isize )
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__field( u64, disk_isize )
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__field( u64, num_bytes )
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__field( u64, ram_bytes )
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__field( u64, disk_bytenr )
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__field( u64, disk_num_bytes )
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__field( u64, extent_offset )
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__field( u8, extent_type )
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__field( u8, compression )
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__field( u64, extent_start )
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__field( u64, extent_end )
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),
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TP_fast_assign_btrfs(bi->root->fs_info,
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__entry->root_obj = bi->root->objectid;
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__entry->ino = btrfs_ino(bi);
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__entry->isize = bi->vfs_inode.i_size;
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__entry->disk_isize = bi->disk_i_size;
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__entry->num_bytes = btrfs_file_extent_num_bytes(l, fi);
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__entry->ram_bytes = btrfs_file_extent_ram_bytes(l, fi);
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__entry->disk_bytenr = btrfs_file_extent_disk_bytenr(l, fi);
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__entry->disk_num_bytes = btrfs_file_extent_disk_num_bytes(l, fi);
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__entry->extent_offset = btrfs_file_extent_offset(l, fi);
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__entry->extent_type = btrfs_file_extent_type(l, fi);
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__entry->compression = btrfs_file_extent_compression(l, fi);
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__entry->extent_start = start;
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__entry->extent_end = (start + __entry->num_bytes);
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),
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TP_printk_btrfs(
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"root=%llu(%s) inode=%llu size=%llu disk_isize=%llu "
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"file extent range=[%llu %llu] "
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"(num_bytes=%llu ram_bytes=%llu disk_bytenr=%llu "
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"disk_num_bytes=%llu extent_offset=%llu type=%s "
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"compression=%u",
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show_root_type(__entry->root_obj), __entry->ino,
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__entry->isize,
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__entry->disk_isize, __entry->extent_start,
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__entry->extent_end, __entry->num_bytes, __entry->ram_bytes,
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__entry->disk_bytenr, __entry->disk_num_bytes,
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__entry->extent_offset, show_fi_type(__entry->extent_type),
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__entry->compression)
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);
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DECLARE_EVENT_CLASS(
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btrfs__file_extent_item_inline,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, int slot, u64 start),
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TP_ARGS(bi, l, fi, slot, start),
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TP_STRUCT__entry_btrfs(
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__field( u64, root_obj )
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__field( u64, ino )
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__field( loff_t, isize )
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__field( u64, disk_isize )
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__field( u8, extent_type )
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__field( u8, compression )
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__field( u64, extent_start )
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__field( u64, extent_end )
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),
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TP_fast_assign_btrfs(
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bi->root->fs_info,
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__entry->root_obj = bi->root->objectid;
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__entry->ino = btrfs_ino(bi);
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__entry->isize = bi->vfs_inode.i_size;
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__entry->disk_isize = bi->disk_i_size;
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__entry->extent_type = btrfs_file_extent_type(l, fi);
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__entry->compression = btrfs_file_extent_compression(l, fi);
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__entry->extent_start = start;
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__entry->extent_end = (start + btrfs_file_extent_inline_len(l, slot, fi));
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),
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TP_printk_btrfs(
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"root=%llu(%s) inode=%llu size=%llu disk_isize=%llu "
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"file extent range=[%llu %llu] "
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"extent_type=%s compression=%u",
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show_root_type(__entry->root_obj), __entry->ino, __entry->isize,
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__entry->disk_isize, __entry->extent_start,
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__entry->extent_end, show_fi_type(__entry->extent_type),
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__entry->compression)
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);
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DEFINE_EVENT(
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btrfs__file_extent_item_regular, btrfs_get_extent_show_fi_regular,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, u64 start),
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TP_ARGS(bi, l, fi, start)
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);
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DEFINE_EVENT(
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btrfs__file_extent_item_regular, btrfs_truncate_show_fi_regular,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, u64 start),
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TP_ARGS(bi, l, fi, start)
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);
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DEFINE_EVENT(
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btrfs__file_extent_item_inline, btrfs_get_extent_show_fi_inline,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, int slot, u64 start),
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TP_ARGS(bi, l, fi, slot, start)
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);
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DEFINE_EVENT(
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btrfs__file_extent_item_inline, btrfs_truncate_show_fi_inline,
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TP_PROTO(struct btrfs_inode *bi, struct extent_buffer *l,
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struct btrfs_file_extent_item *fi, int slot, u64 start),
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TP_ARGS(bi, l, fi, slot, start)
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);
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#define show_ordered_flags(flags) \
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__print_flags(flags, "|", \
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{ (1 << BTRFS_ORDERED_IO_DONE), "IO_DONE" }, \
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