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btrfs: tracepoints: add trace event for btrfs_log_inode()
btrfs_log_inode() is one of the most important steps called during a fsync, as well as during rename and link operations on inodes that were previously logged. Add trace events for when entering and exiting that function. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
David Sterba
parent
b0a599f8e9
commit
e2f67524f4
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@ -60,6 +60,7 @@
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#include "verity.h"
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#include "super.h"
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#include "extent-tree.h"
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#include "tree-log.h"
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#define CREATE_TRACE_POINTS
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#include <trace/events/btrfs.h>
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@ -6884,7 +6884,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
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struct btrfs_log_ctx *ctx)
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{
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struct btrfs_path *path;
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struct btrfs_path *dst_path;
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struct btrfs_path *dst_path = NULL;
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struct btrfs_key min_key;
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struct btrfs_key max_key;
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struct btrfs_root *log = inode->root->log_root;
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@ -6900,13 +6900,17 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
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LIST_HEAD(delayed_ins_list);
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LIST_HEAD(delayed_del_list);
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trace_btrfs_log_inode_enter(trans, inode, ctx, log_mode);
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path = btrfs_alloc_path();
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if (!path)
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return -ENOMEM;
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if (!path) {
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ret = -ENOMEM;
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goto out;
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}
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dst_path = btrfs_alloc_path();
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if (!dst_path) {
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btrfs_free_path(path);
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return -ENOMEM;
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ret = -ENOMEM;
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goto out;
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}
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min_key.objectid = ino;
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@ -7221,6 +7225,8 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
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&delayed_del_list);
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}
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trace_btrfs_log_inode_exit(trans, inode, ret);
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return ret;
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}
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@ -33,6 +33,7 @@ struct raid56_bio_trace_info;
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struct find_free_extent_ctl;
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struct btrfs_trans_handle;
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struct btrfs_transaction;
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struct btrfs_log_ctx;
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#define show_inode_type(mode) \
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__print_symbolic((mode) & S_IFMT, \
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@ -124,6 +125,9 @@ struct btrfs_transaction;
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EM( TRANS_STATE_SUPER_COMMITTED, "TRANS_STATE_SUPER_COMMITTED") \
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EMe(TRANS_STATE_COMPLETED, "TRANS_STATE_COMPLETED")
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#define LOG_MODES \
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EM( LOG_INODE_ALL, "LOG_INODE_ALL") \
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EMe(LOG_INODE_EXISTS, "LOG_INODE_EXISTS")
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/*
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* First define the enums in the above macros to be exported to userspace via
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* TRACE_DEFINE_ENUM().
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@ -140,6 +144,7 @@ QGROUP_RSV_TYPES
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IO_TREE_OWNER
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FLUSH_STATES
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TRANSACTION_STATES
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LOG_MODES
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/*
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* Now redefine the EM and EMe macros to map the enums to the strings that will
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@ -951,6 +956,117 @@ TRACE_EVENT(btrfs_log_inode_parent_exit,
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__entry->transid, __entry->ret)
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);
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TRACE_EVENT(btrfs_log_inode_enter,
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TP_PROTO(const struct btrfs_trans_handle *trans, struct btrfs_inode *inode,
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const struct btrfs_log_ctx *ctx, int log_mode),
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TP_ARGS(trans, inode, ctx, log_mode),
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TP_STRUCT__entry_btrfs(
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__field( u64, root_objectid )
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__field( u64, ino )
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__field( umode_t, mode )
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__field( u64, transid )
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__field( u64, generation )
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__field( u64, logged_trans )
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__field( u64, last_unlink_trans )
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__field( u64, last_reflink_trans )
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__field( int, last_sub_trans )
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__field( int, last_log_commit )
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__field( bool, logging_new_name )
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__field( bool, logging_new_delayed_dentries )
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__field( bool, is_conflict_inode )
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__field( bool, full_sync )
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__field( bool, copy_everything )
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__field( bool, no_xattrs )
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__field( int, log_mode )
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),
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TP_fast_assign(
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TP_fast_assign_fsid(inode->root->fs_info);
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__entry->root_objectid = btrfs_root_id(inode->root);
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__entry->ino = btrfs_ino(inode);
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__entry->mode = inode->vfs_inode.i_mode;
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__entry->transid = trans->transid;
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__entry->generation = inode->generation;
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spin_lock(&inode->lock);
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__entry->logged_trans = inode->logged_trans;
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__entry->last_unlink_trans = inode->last_unlink_trans;
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__entry->last_reflink_trans = inode->last_reflink_trans;
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__entry->last_sub_trans = inode->last_sub_trans;
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__entry->last_log_commit = inode->last_log_commit;
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spin_unlock(&inode->lock);
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__entry->logging_new_name = ctx->logging_new_name;
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__entry->logging_new_delayed_dentries = ctx->logging_new_delayed_dentries;
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__entry->is_conflict_inode = ctx->logging_conflict_inodes;
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__entry->full_sync =
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test_bit(BTRFS_INODE_NEEDS_FULL_SYNC, &inode->runtime_flags);
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__entry->copy_everything =
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test_bit(BTRFS_INODE_COPY_EVERYTHING, &inode->runtime_flags);
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__entry->no_xattrs =
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test_bit(BTRFS_INODE_NO_XATTRS, &inode->runtime_flags);
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__entry->log_mode = log_mode;
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),
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TP_printk_btrfs("root=%llu(%s) ino=%llu type=%s transid=%llu gen=%llu"
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" logged_trans=%llu last_unlink_trans=%llu"
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" last_reflink_trans=%llu last_sub_trans=%d last_log_commit=%d"
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" logging_new_name=%d logging_new_delayed_dentries=%d"
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" is_conflict_inode=%d full_sync=%d copy_everything=%d"
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" no_xattrs=%d log_mode=%d(%s)",
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show_root_type(__entry->root_objectid), __entry->ino,
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show_inode_type(__entry->mode), __entry->transid,
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__entry->generation, __entry->logged_trans,
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__entry->last_unlink_trans, __entry->last_reflink_trans,
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__entry->last_sub_trans, __entry->last_log_commit,
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__entry->logging_new_name, __entry->logging_new_delayed_dentries,
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__entry->is_conflict_inode, __entry->log_mode,
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__entry->full_sync, __entry->copy_everything, __entry->no_xattrs,
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__print_symbolic(__entry->log_mode, LOG_MODES))
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);
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TRACE_EVENT(btrfs_log_inode_exit,
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TP_PROTO(const struct btrfs_trans_handle *trans, struct btrfs_inode *inode,
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int ret),
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TP_ARGS(trans, inode, ret),
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TP_STRUCT__entry_btrfs(
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__field( u64, root_objectid )
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__field( u64, ino )
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__field( u64, transid )
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__field( u64, logged_trans )
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__field( u64, last_reflink_trans )
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__field( int, last_sub_trans )
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__field( int, last_log_commit )
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__field( int, ret )
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),
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TP_fast_assign(
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TP_fast_assign_fsid(inode->root->fs_info);
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__entry->root_objectid = btrfs_root_id(inode->root);
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__entry->ino = btrfs_ino(inode);
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__entry->transid = trans->transid;
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spin_lock(&inode->lock);
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__entry->logged_trans = inode->logged_trans;
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__entry->last_reflink_trans = inode->last_reflink_trans;
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__entry->last_sub_trans = inode->last_sub_trans;
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__entry->last_log_commit = inode->last_log_commit;
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spin_unlock(&inode->lock);
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__entry->ret = ret;
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),
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TP_printk_btrfs("root=%llu(%s) ino=%llu transid=%llu logged_trans=%llu"
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" last_reflink_trans=%llu last_sub_trans=%d"
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" last_log_commit=%d ret=%d",
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show_root_type(__entry->root_objectid), __entry->ino,
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__entry->transid, __entry->logged_trans,
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__entry->last_reflink_trans, __entry->last_sub_trans,
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__entry->last_log_commit, __entry->ret)
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);
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TRACE_EVENT(btrfs_sync_fs,
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TP_PROTO(const struct btrfs_fs_info *fs_info, int wait),
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