From: Goldwyn Rodrigues <rgold...@suse.com> These commits show the current value of qg->reserved and the amount modified. Though these are frequently called function, we may require to monitor qg->reserved for some operations.
Signed-off-by: Goldwyn Rodrigues <rgold...@suse.com> --- fs/btrfs/qgroup.c | 4 ++++ include/trace/events/btrfs.h | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index dfd9986..4700cac 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2159,6 +2159,8 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes) qg = u64_to_ptr(unode->aux); + trace_btrfs_qgroup_reserve(fs_info, qg->qgroupid, qg->reserved, num_bytes); + qg->reserved += num_bytes; } @@ -2204,6 +2206,8 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, qg = u64_to_ptr(unode->aux); + trace_btrfs_qgroup_free_refroot(fs_info, qg->qgroupid, qg->reserved, num_bytes); + qg->reserved -= num_bytes; list_for_each_entry(glist, &qg->groups, next_group) { diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 6d7fe11..f6a9f8c 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -1472,6 +1472,46 @@ TRACE_EVENT(qgroup_update_counters, __entry->cur_new_count) ); +DECLARE_EVENT_CLASS(btrfs_qgroup_reserved, + + TP_PROTO(struct btrfs_fs_info *fs_info, u64 qgid, + u64 reserved, u64 num_bytes), + + TP_ARGS(fs_info, qgid, reserved, num_bytes), + + TP_STRUCT__entry_btrfs( + __field( u64, qgid ) + __field( u64, reserved ) + __field( u64, num_bytes ) + ), + + TP_fast_assign_btrfs(fs_info, + __entry->qgid = qgid; + __entry->reserved = reserved; + __entry->num_bytes = num_bytes; + ), + + TP_printk_btrfs("qgid = %llu, reserved = %llu, num_bytes = %llu", + __entry->qgid, + __entry->reserved, + __entry->num_bytes) +); + + +DEFINE_EVENT(btrfs_qgroup_reserved, btrfs_qgroup_reserve, + + TP_PROTO(struct btrfs_fs_info *fs_info, u64 qgid, u64 reserved, u64 num_bytes), + + TP_ARGS(fs_info, qgid, reserved, num_bytes) +); + +DEFINE_EVENT(btrfs_qgroup_reserved, btrfs_qgroup_free_refroot, + + TP_PROTO(struct btrfs_fs_info *fs_info, u64 qgid, u64 reserved, u64 num_bytes), + + TP_ARGS(fs_info, qgid, reserved, num_bytes) +); + #endif /* _TRACE_BTRFS_H */ /* This part must be outside protection */ -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html