Commit d3982100 authored by Mark Fasheh's avatar Mark Fasheh Committed by Chris Mason
Browse files

btrfs: add trace for qgroup accounting 



We want this to debug qgroup changes on live systems.

Signed-off-by: default avatarMark Fasheh <mfasheh@suse.de>
Reviewed-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 443f24fe

fs/btrfs/qgroup.c

+4 −0
Original line number Diff line number Diff line
@@ -1335,6 +1335,8 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, 
	INIT_LIST_HEAD(&oper->elem.list);

	oper->elem.seq = 0;



	trace_btrfs_qgroup_record_ref(oper);



	if (type == BTRFS_QGROUP_OPER_SUB_SUBTREE) {

		/*

		 * If any operation for this bytenr/ref_root combo
@@ -2077,6 +2079,8 @@ static int btrfs_qgroup_account(struct btrfs_trans_handle *trans, 


	ASSERT(is_fstree(oper->ref_root));



	trace_btrfs_qgroup_account(oper);



	switch (oper->type) {

	case BTRFS_QGROUP_OPER_ADD_EXCL:

	case BTRFS_QGROUP_OPER_SUB_EXCL:

fs/btrfs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ 
#include "backref.h"

#include "tests/btrfs-tests.h"



#include "qgroup.h"

#define CREATE_TRACE_POINTS

#include <trace/events/btrfs.h>

include/trace/events/btrfs.h

+56 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ struct map_lookup; 
struct extent_buffer;

struct btrfs_work;

struct __btrfs_workqueue;

struct btrfs_qgroup_operation;



#define show_ref_type(type)						\

	__print_symbolic(type,						\
@@ -1119,6 +1120,61 @@ DEFINE_EVENT(btrfs__workqueue_done, btrfs_workqueue_destroy, 
	TP_ARGS(wq)

);



#define show_oper_type(type)						\

	__print_symbolic(type,						\

		{ BTRFS_QGROUP_OPER_ADD_EXCL, 	"OPER_ADD_EXCL" },	\

		{ BTRFS_QGROUP_OPER_ADD_SHARED, "OPER_ADD_SHARED" },	\

		{ BTRFS_QGROUP_OPER_SUB_EXCL, 	"OPER_SUB_EXCL" },	\

		{ BTRFS_QGROUP_OPER_SUB_SHARED,	"OPER_SUB_SHARED" })



DECLARE_EVENT_CLASS(btrfs_qgroup_oper,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper),



	TP_STRUCT__entry(

		__field(	u64,  ref_root		)

		__field(	u64,  bytenr		)

		__field(	u64,  num_bytes		)

		__field(	u64,  seq		)

		__field(	int,  type		)

		__field(	u64,  elem_seq		)

	),



	TP_fast_assign(

		__entry->ref_root	= oper->ref_root;

		__entry->bytenr		= oper->bytenr,

		__entry->num_bytes	= oper->num_bytes;

		__entry->seq 		= oper->seq;

		__entry->type		= oper->type;

		__entry->elem_seq	= oper->elem.seq;

	),



	TP_printk("ref_root = %llu, bytenr = %llu, num_bytes = %llu, "

		  "seq = %llu, elem.seq = %llu, type = %s",

		  (unsigned long long)__entry->ref_root,

		  (unsigned long long)__entry->bytenr,

		  (unsigned long long)__entry->num_bytes,

		  (unsigned long long)__entry->seq,

		  (unsigned long long)__entry->elem_seq,

		  show_oper_type(__entry->type))

);



DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_account,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper)

);



DEFINE_EVENT(btrfs_qgroup_oper, btrfs_qgroup_record_ref,



	TP_PROTO(struct btrfs_qgroup_operation *oper),



	TP_ARGS(oper)

);



#endif /* _TRACE_BTRFS_H */



/* This part must be outside protection */