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Commit fb40ba0d authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: Add a tracepoint for ext4_alloc_da_blocks() 



Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 1b9c12f4

fs/ext4/inode.c

+2 −0
Original line number Diff line number Diff line
@@ -3128,6 +3128,8 @@ out: 
 */

int ext4_alloc_da_blocks(struct inode *inode)

{

	trace_ext4_alloc_da_blocks(inode);



	if (!EXT4_I(inode)->i_reserved_data_blocks &&

	    !EXT4_I(inode)->i_reserved_meta_blocks)

		return 0;

include/trace/events/ext4.h

+27 −0
Original line number Diff line number Diff line
@@ -10,6 +10,9 @@ 
struct ext4_allocation_context;

struct ext4_allocation_request;

struct ext4_prealloc_space;

struct ext4_inode_info;



#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))



TRACE_EVENT(ext4_free_inode,

	TP_PROTO(struct inode *inode),
@@ -710,6 +713,30 @@ TRACE_EVENT(ext4_sync_fs, 
		  __entry->wait)

);



TRACE_EVENT(ext4_alloc_da_blocks,

	TP_PROTO(struct inode *inode),



	TP_ARGS(inode),



	TP_STRUCT__entry(

		__field(	dev_t,	dev			)

		__field(	ino_t,	ino			)

		__field( unsigned int,	data_blocks	)

		__field( unsigned int,	meta_blocks	)

	),



	TP_fast_assign(

		__entry->dev	= inode->i_sb->s_dev;

		__entry->ino	= inode->i_ino;

		__entry->data_blocks = EXT4_I(inode)->i_reserved_data_blocks;

		__entry->meta_blocks = EXT4_I(inode)->i_reserved_meta_blocks;

	),



	TP_printk("dev %s ino %lu data_blocks %u meta_blocks %u",

		  jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,

		  __entry->data_blocks, __entry->meta_blocks)

);



#endif /* _TRACE_EXT4_H */



/* This part must be outside protection */