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ext4: Add a tracepoint for ext4_alloc_da_blocks()

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Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2009-09-16 19:30:40 -04:00
parent 1b9c12f44c
commit fb40ba0d98
2 changed files with 29 additions and 0 deletions
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2
fs/ext4/inode.c
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@ -3128,6 +3128,8 @@ static void ext4_da_invalidatepage(struct page *page, unsigned long offset)
*/
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;

27
include/trace/events/ext4.h
View File

@ -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 */