Commit dce3afa5 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

Btrfs: add fsid to some tracepoints 



When tracing enospc problems on a box with multiple file systems mounted I need
to be able to differentiate between the two file systems.  Most of the important
trace points I'm looking at already have an fsid, but the reserved extent trace
points do not, so add that to make it possible to figure out which trace point
belongs to which file system.  Thanks,

Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent f376df2b

include/trace/events/btrfs.h

+11 −6
Original line number Diff line number Diff line
@@ -873,18 +873,21 @@ DECLARE_EVENT_CLASS(btrfs__reserved_extent, 
	TP_ARGS(root, start, len),



	TP_STRUCT__entry(

		__array(	u8,	fsid,	BTRFS_UUID_SIZE	)

		__field(	u64,	root_objectid		)

		__field(	u64,	start			)

		__field(	u64,	len			)

	),



	TP_fast_assign(

		memcpy(__entry->fsid, root->fs_info->fsid, BTRFS_UUID_SIZE);

		__entry->root_objectid	= root->root_key.objectid;

		__entry->start		= start;

		__entry->len		= len;

	),



	TP_printk("root = %llu(%s), start = %llu, len = %llu",

	TP_printk("%pU: root = %llu(%s), start = %llu, len = %llu",

		  __entry->fsid,

		  show_root_type(__entry->root_objectid),

		  (unsigned long long)__entry->start,

		  (unsigned long long)__entry->len)
@@ -941,6 +944,7 @@ DECLARE_EVENT_CLASS(btrfs__reserve_extent, 
	TP_ARGS(root, block_group, start, len),



	TP_STRUCT__entry(

		__array(	u8,	fsid,	BTRFS_UUID_SIZE	)

		__field(	u64,	root_objectid		)

		__field(	u64,	bg_objectid		)

		__field(	u64,	flags			)
@@ -949,6 +953,7 @@ DECLARE_EVENT_CLASS(btrfs__reserve_extent, 
	),



	TP_fast_assign(

		memcpy(__entry->fsid, root->fs_info->fsid, BTRFS_UUID_SIZE);

		__entry->root_objectid	= root->root_key.objectid;

		__entry->bg_objectid	= block_group->key.objectid;

		__entry->flags		= block_group->flags;
@@ -956,8 +961,8 @@ DECLARE_EVENT_CLASS(btrfs__reserve_extent, 
		__entry->len		= len;

	),



	TP_printk("root = %Lu(%s), block_group = %Lu, flags = %Lu(%s), "

		  "start = %Lu, len = %Lu",

	TP_printk("%pU: root = %Lu(%s), block_group = %Lu, flags = %Lu(%s), "

		  "start = %Lu, len = %Lu", __entry->fsid,

		  show_root_type(__entry->root_objectid), __entry->bg_objectid,

		  __entry->flags, __print_flags((unsigned long)__entry->flags,

						"|", BTRFS_GROUP_FLAGS),

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