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Subject[PATCH 6/8] f2fs: add tracepoints to debug the block allocation and fallocate
Date
From: Namjae Jeon <namjae.jeon@samsung.com>

Add tracepoints to debug the block allocation and fallocate.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
---
fs/f2fs/data.c | 1 +
fs/f2fs/file.c | 3 ++
include/trace/events/f2fs.h | 76 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 80 insertions(+)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 61beb82..be96b0e 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -55,6 +55,7 @@ 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);
__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 022d318..f8ba8c0 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -554,6 +554,7 @@ static long f2fs_fallocate(struct file *file, int mode,
struct inode *inode = file->f_path.dentry->d_inode;
long ret;

+ trace_f2fs_fallocate_enter(inode, offset, len, mode);
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
return -EOPNOTSUPP;

@@ -566,6 +567,8 @@ static long f2fs_fallocate(struct file *file, int mode,
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
}
+
+ trace_f2fs_fallocate_exit(inode, offset, len, ret);
return ret;
}

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 9abac346d..88ee2c7 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -364,6 +364,82 @@ TRACE_EVENT(f2fs_get_victim,
__entry->type)
);

+TRACE_EVENT(f2fs_fallocate_enter,
+ TP_PROTO(struct inode *inode, loff_t offset, loff_t len, int mode),
+
+ TP_ARGS(inode, offset, len, mode),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(loff_t, pos)
+ __field(loff_t, len)
+ __field(int, mode)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->pos = offset;
+ __entry->len = len;
+ __entry->mode = mode;
+ ),
+
+ TP_printk("dev %d,%d ino %lu pos %lld len %lld mode %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino, __entry->pos,
+ __entry->len, __entry->mode)
+);
+
+TRACE_EVENT(f2fs_fallocate_exit,
+ TP_PROTO(struct inode *inode, loff_t offset,
+ loff_t len, int ret),
+
+ TP_ARGS(inode, offset, len, ret),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __field(loff_t, pos)
+ __field(loff_t, len)
+ __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->ret = ret;
+ ),
+
+ TP_printk("dev %d,%d ino %lu pos %lld len %lld ret %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->pos, __entry->len,
+ __entry->ret)
+);
+
+TRACE_EVENT(f2fs_reserve_new_block,
+ TP_PROTO(struct inode *inode, unsigned int nid),
+
+ TP_ARGS(inode, nid),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(unsigned int, nid)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->nid = nid;
+ ),
+
+ TP_printk("dev %d,%d: with Nid %u ",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->nid)
+);
+
#endif /* _TRACE_F2FS_H */

/* This part must be outside protection */
--
1.7.9.5


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