From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Add tracepoints to debug the block allocation & fallocate.
Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Pankaj Kumar <pankaj.km@xxxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
fs/f2fs/data.c | 1 +
fs/f2fs/file.c | 6 ++++-
include/trace/events/f2fs.h | 59 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 65 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 394ab68..503b5bf 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -56,6 +56,7 @@ int reserve_new_block(struct dnode_of_data *dn)
if (!inc_valid_block_count(sbi, dn->inode, 1))
return -ENOSPC;
+ trace_f2fs_reserve_new_block(dn->inode, dn->nid, dn->ofs_in_node);
__set_data_blkaddr(dn, NEW_ADDR);
dn->data_blkaddr = NEW_ADDR;
sync_inode_page(dn);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 31176d5..64eeb5a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -532,8 +532,10 @@ static long f2fs_fallocate(struct file *file, int mode,
struct inode *inode = file_inode(file);
long ret;
- if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+ if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) {
+ trace_f2fs_fallocate(inode, offset, len, mode, -EOPNOTSUPP);
return -EOPNOTSUPP;
+ }
if (mode & FALLOC_FL_PUNCH_HOLE)
ret = punch_hole(inode, offset, len, mode);
@@ -544,6 +546,8 @@ static long f2fs_fallocate(struct file *file, int mode,
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
}
+
+ trace_f2fs_fallocate(inode, offset, len, mode, ret);
return ret;
}
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 57b6487..cf1bcdf8 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -509,6 +509,65 @@ TRACE_EVENT(f2fs_get_victim,
__entry->victim)
);
+TRACE_EVENT(f2fs_fallocate,
+ TP_PROTO(struct inode *inode, loff_t offset, loff_t len,
+ int mode, int ret),
+
+ TP_ARGS(inode, offset, len, mode, ret),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(loff_t, pos)
+ __field(loff_t, len)
+ __field(int, mode)
+ __field(blkcnt_t, blocks)
+ __field(loff_t, size)
+ __field(int, ret)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->pos = offset;
+ __entry->len = len;
+ __entry->mode = mode;
+ __entry->blocks = inode->i_blocks;
+ __entry->size = inode->i_size;
+ __entry->ret = ret;
+ ),
+
+ TP_printk("dev %d,%d ino %lu pos %lld len %lld mode %d block %llu"
+ "Size %lld ret %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino, __entry->pos,
+ __entry->len, __entry->mode,
+ (unsigned long long)__entry->blocks, __entry->size,
+ __entry->ret)
+);
+
+TRACE_EVENT(f2fs_reserve_new_block,
+ TP_PROTO(struct inode *inode, unsigned int nid, unsigned int ofs_node),
+
+ TP_ARGS(inode, nid, ofs_node),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(unsigned int, nid)
+ __field(unsigned int, ofs_node)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->nid = nid;
+ __entry->ofs_node = ofs_node;
+ ),
+
+ TP_printk("dev %d,%d: with Nid %u Node page offset %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->nid, __entry->ofs_node)
+);
+
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */
--
1.7.9.5
--
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