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btrfs: add trace for qgroup accounting
We want this to debug qgroup changes on live systems. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
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3 changed files with 61 additions and 0 deletions
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@ -1335,6 +1335,8 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
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INIT_LIST_HEAD(&oper->elem.list);
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oper->elem.seq = 0;
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trace_btrfs_qgroup_record_ref(oper);
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if (type == BTRFS_QGROUP_OPER_SUB_SUBTREE) {
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/*
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* If any operation for this bytenr/ref_root combo
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@ -2077,6 +2079,8 @@ static int btrfs_qgroup_account(struct btrfs_trans_handle *trans,
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ASSERT(is_fstree(oper->ref_root));
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trace_btrfs_qgroup_account(oper);
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switch (oper->type) {
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case BTRFS_QGROUP_OPER_ADD_EXCL:
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case BTRFS_QGROUP_OPER_SUB_EXCL:
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@ -60,6 +60,7 @@
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#include "backref.h"
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#include "tests/btrfs-tests.h"
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#include "qgroup.h"
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#define CREATE_TRACE_POINTS
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#include <trace/events/btrfs.h>
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@ -23,6 +23,7 @@ struct map_lookup;
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struct extent_buffer;
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struct btrfs_work;
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struct __btrfs_workqueue;
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struct btrfs_qgroup_operation;
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#define show_ref_type(type) \
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__print_symbolic(type, \
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@ -1119,6 +1120,61 @@ DEFINE_EVENT(btrfs__workqueue_done, btrfs_workqueue_destroy,
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TP_ARGS(wq)
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);
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#define show_oper_type(type) \
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__print_symbolic(type, \
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{ BTRFS_QGROUP_OPER_ADD_EXCL, "OPER_ADD_EXCL" }, \
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{ BTRFS_QGROUP_OPER_ADD_SHARED, "OPER_ADD_SHARED" }, \
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{ BTRFS_QGROUP_OPER_SUB_EXCL, "OPER_SUB_EXCL" }, \
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{ BTRFS_QGROUP_OPER_SUB_SHARED, "OPER_SUB_SHARED" })
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DECLARE_EVENT_CLASS(btrfs_qgroup_oper,
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TP_PROTO(struct btrfs_qgroup_operation *oper),
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TP_ARGS(oper),
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TP_STRUCT__entry(
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__field( u64, ref_root )
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__field( u64, bytenr )
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__field( u64, num_bytes )
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__field( u64, seq )
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__field( int, type )
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__field( u64, elem_seq )
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),
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TP_fast_assign(
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__entry->ref_root = oper->ref_root;
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__entry->bytenr = oper->bytenr,
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__entry->num_bytes = oper->num_bytes;
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__entry->seq = oper->seq;
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__entry->type = oper->type;
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__entry->elem_seq = oper->elem.seq;
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),
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TP_printk("ref_root = %llu, bytenr = %llu, num_bytes = %llu, "
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"seq = %llu, elem.seq = %llu, type = %s",
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(unsigned long long)__entry->ref_root,
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(unsigned long long)__entry->bytenr,
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(unsigned long long)__entry->num_bytes,
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(unsigned long long)__entry->seq,
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(unsigned long long)__entry->elem_seq,
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show_oper_type(__entry->type))
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);
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DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_account,
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TP_PROTO(struct btrfs_qgroup_operation *oper),
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TP_ARGS(oper)
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);
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DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_record_ref,
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TP_PROTO(struct btrfs_qgroup_operation *oper),
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TP_ARGS(oper)
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);
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#endif /* _TRACE_BTRFS_H */
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/* This part must be outside protection */
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