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| author | Josef Bacik <josef@toxicpanda.com> | 2020-10-09 16:28:29 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-02-09 00:58:59 +0300 |
| commit | e5ad49e215a07562f0a765c68161d13d7c23d8d1 (patch) | |
| tree | 71716a73c20d84148fdad60307d8e568accd795e /include/trace | |
| parent | 4b02b00fe5f1377f3dbfb168dfcfebf3d7a9632f (diff) | |
| download | linux-e5ad49e215a07562f0a765c68161d13d7c23d8d1.tar.xz | |
btrfs: add a trace class for dumping the current ENOSPC state
Often when I'm debugging ENOSPC related issues I have to resort to
printing the entire ENOSPC state with trace_printk() in different spots.
This gets pretty annoying, so add a trace state that does this for us.
Then add a trace point at the end of preemptive flushing so you can see
the state of the space_info when we decide to exit preemptive flushing.
This helped me figure out we weren't kicking in the preemptive flushing
soon enough.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/btrfs.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 807921de6b32..0551ea65374f 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -2029,6 +2029,68 @@ TRACE_EVENT(btrfs_convert_extent_bit, __print_flags(__entry->clear_bits, "|", EXTENT_FLAGS)) ); +DECLARE_EVENT_CLASS(btrfs_dump_space_info, + TP_PROTO(const struct btrfs_fs_info *fs_info, + const struct btrfs_space_info *sinfo), + + TP_ARGS(fs_info, sinfo), + + TP_STRUCT__entry_btrfs( + __field( u64, flags ) + __field( u64, total_bytes ) + __field( u64, bytes_used ) + __field( u64, bytes_pinned ) + __field( u64, bytes_reserved ) + __field( u64, bytes_may_use ) + __field( u64, bytes_readonly ) + __field( u64, reclaim_size ) + __field( int, clamp ) + __field( u64, global_reserved ) + __field( u64, trans_reserved ) + __field( u64, delayed_refs_reserved ) + __field( u64, delayed_reserved ) + __field( u64, free_chunk_space ) + ), + + TP_fast_assign_btrfs(fs_info, + __entry->flags = sinfo->flags; + __entry->total_bytes = sinfo->total_bytes; + __entry->bytes_used = sinfo->bytes_used; + __entry->bytes_pinned = sinfo->bytes_pinned; + __entry->bytes_reserved = sinfo->bytes_reserved; + __entry->bytes_may_use = sinfo->bytes_may_use; + __entry->bytes_readonly = sinfo->bytes_readonly; + __entry->reclaim_size = sinfo->reclaim_size; + __entry->clamp = sinfo->clamp; + __entry->global_reserved = fs_info->global_block_rsv.reserved; + __entry->trans_reserved = fs_info->trans_block_rsv.reserved; + __entry->delayed_refs_reserved = fs_info->delayed_refs_rsv.reserved; + __entry->delayed_reserved = fs_info->delayed_block_rsv.reserved; + __entry->free_chunk_space = atomic64_read(&fs_info->free_chunk_space); + ), + + TP_printk_btrfs("flags=%s total_bytes=%llu bytes_used=%llu " + "bytes_pinned=%llu bytes_reserved=%llu " + "bytes_may_use=%llu bytes_readonly=%llu " + "reclaim_size=%llu clamp=%d global_reserved=%llu " + "trans_reserved=%llu delayed_refs_reserved=%llu " + "delayed_reserved=%llu chunk_free_space=%llu", + __print_flags(__entry->flags, "|", BTRFS_GROUP_FLAGS), + __entry->total_bytes, __entry->bytes_used, + __entry->bytes_pinned, __entry->bytes_reserved, + __entry->bytes_may_use, __entry->bytes_readonly, + __entry->reclaim_size, __entry->clamp, + __entry->global_reserved, __entry->trans_reserved, + __entry->delayed_refs_reserved, + __entry->delayed_reserved, __entry->free_chunk_space) +); + +DEFINE_EVENT(btrfs_dump_space_info, btrfs_done_preemptive_reclaim, + TP_PROTO(const struct btrfs_fs_info *fs_info, + const struct btrfs_space_info *sinfo), + TP_ARGS(fs_info, sinfo) +); + TRACE_EVENT(btrfs_reserve_ticket, TP_PROTO(const struct btrfs_fs_info *fs_info, u64 flags, u64 bytes, u64 start_ns, int flush, int error), |