BMC/Intel-BMC/linux.git/include/trace/events/btrfs.h, branch dev-4.18

btrfs: qgroup: Allow trace_btrfs_qgroup_account_extent() to record its transid

2018-05-28T16:07:30+00:00

When debugging quota rescan race, some times btrfs rescan could account some old (committed) leaf and then re-account newly committed leaf in next generation. This race needs extra transid to locate, so add @transid for trace_btrfs_qgroup_account_extent() for such debug. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: trace: Allow trace_qgroup_update_counters() to record old rfer/excl value

2018-05-28T16:07:29+00:00

Origin trace_qgroup_update_counters() only records qgroup id and its reference count change. It's good enough to debug qgroup accounting change, but when rescan race is involved, it's pretty hard to distinguish which modification belongs to which rescan. So add old_rfer and old_excl trace output to help distinguishing different rescan instance. (Different rescan instance should reset its qgroup->rfer to 0) For trace event parameter, it just changes from u64 qgroup_id to struct btrfs_qgroup *qgroup, so number of parameters is not changed at all. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: trace: Add trace points for unused block groups

2018-05-28T16:07:28+00:00

This patch will add the following trace events: 1) btrfs_remove_block_group For btrfs_remove_block_group() function. Triggered when a block group is really removed. 2) btrfs_add_unused_block_group Triggered which block group is added to unused_bgs list. 3) btrfs_skip_unused_block_group Triggered which unused block group is not deleted. These trace events is pretty handy to debug case related to block group auto remove. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: trace: Remove unnecessary fs_info parameter for btrfs__reserve_extent event class

2018-05-28T16:07:27+00:00

fs_info can be extracted from btrfs_block_group_cache, and all btrfs_block_group_cache is created by btrfs_create_block_group_cache() with fs_info initialized, no need to worry about NULL pointer dereference. Signed-off-by: Qu Wenruo Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: use fs_info for btrfs_handle_em_exist tracepoint

2018-05-28T16:07:17+00:00

We really want to know to which filesystem the extent map events belong, but as it cannot be reached from the extent_map pointers, we need to pass it down the callchain. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: tracepoints, use extended format with UUID where possible

2018-05-28T16:07:17+00:00

Most of the strings are prefixed by the UUID of the filesystem that generates the message, however there are a few events that still opencode the macro magic and can be converted to the common macros. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: tracepoints, fix whitespace in strings

2018-05-28T16:07:17+00:00

The preferred style is to avoid spaces between key and value and no commas between key=values. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: tracepoints, drop unnecessary ULL casts

2018-05-28T16:07:16+00:00

The (unsigned long long) casts are not necessary since long ago. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: tracepoints, use %llu instead of %Lu

2018-05-28T16:07:16+00:00

For consistency, use the %llu form. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: tracepoints, use correct type for inode number

2018-05-28T16:07:16+00:00

The size of ino_t depends on 32/64bit architecture type. Btrfs stores the full 64bit inode anyway so we should use it. Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba