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Message-Id: <20231128093130.2885216-1-chao@kernel.org>
Date: Tue, 28 Nov 2023 17:31:29 +0800
From: Chao Yu <chao@...nel.org>
To: jaegeuk@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>
Subject: [PATCH 1/2] f2fs: introduce tracepoint for f2fs_rename()
This patch adds tracepoints for f2fs_rename().
Signed-off-by: Chao Yu <chao@...nel.org>
---
fs/f2fs/namei.c | 16 ++++++---
include/trace/events/f2fs.h | 69 +++++++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 5 deletions(-)
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index a765db9e26c2..ede6afb81762 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -1315,21 +1315,27 @@ static int f2fs_rename2(struct mnt_idmap *idmap,
if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
return -EINVAL;
+ trace_f2fs_rename_start(old_dir, old_dentry, new_dir, new_dentry,
+ flags);
+
err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
flags);
if (err)
return err;
- if (flags & RENAME_EXCHANGE) {
- return f2fs_cross_rename(old_dir, old_dentry,
- new_dir, new_dentry);
- }
+ if (flags & RENAME_EXCHANGE)
+ err = f2fs_cross_rename(old_dir, old_dentry,
+ new_dir, new_dentry);
+ else
/*
* VFS has already handled the new dentry existence case,
* here, we just deal with "RENAME_NOREPLACE" as regular rename.
*/
- return f2fs_rename(idmap, old_dir, old_dentry,
+ err = f2fs_rename(idmap, old_dir, old_dentry,
new_dir, new_dentry, flags);
+
+ trace_f2fs_rename_end(old_dentry, new_dentry, flags, err);
+ return err;
}
static const char *f2fs_encrypted_get_link(struct dentry *dentry,
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 793f82cc1515..36d9e29ca3c5 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -866,6 +866,75 @@ TRACE_EVENT(f2fs_lookup_end,
__entry->err)
);
+TRACE_EVENT(f2fs_rename_start,
+
+ TP_PROTO(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry,
+ unsigned int flags),
+
+ TP_ARGS(old_dir, old_dentry, new_dir, new_dentry, flags),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __string(old_name, old_dentry->d_name.name)
+ __field(ino_t, new_pino)
+ __string(new_name, new_dentry->d_name.name)
+ __field(unsigned int, flags)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = old_dir->i_sb->s_dev;
+ __entry->ino = old_dir->i_ino;
+ __assign_str(old_name, old_dentry->d_name.name);
+ __entry->new_pino = new_dir->i_ino;
+ __assign_str(new_name, new_dentry->d_name.name);
+ __entry->flags = flags;
+ ),
+
+ TP_printk("dev = (%d,%d), old_dir = %lu, old_name: %s, "
+ "new_dir = %lu, new_name: %s, flags = %u",
+ show_dev_ino(__entry),
+ __get_str(old_name),
+ __entry->new_pino,
+ __get_str(new_name),
+ __entry->flags)
+);
+
+TRACE_EVENT(f2fs_rename_end,
+
+ TP_PROTO(struct dentry *old_dentry, struct dentry *new_dentry,
+ unsigned int flags, int ret),
+
+ TP_ARGS(old_dentry, new_dentry, flags, ret),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(ino_t, ino)
+ __string(old_name, old_dentry->d_name.name)
+ __string(new_name, new_dentry->d_name.name)
+ __field(unsigned int, flags)
+ __field(int, ret)
+ ),
+
+ TP_fast_assign(
+ __entry->dev = old_dentry->d_sb->s_dev;
+ __entry->ino = old_dentry->d_inode->i_ino;
+ __assign_str(old_name, old_dentry->d_name.name);
+ __assign_str(new_name, new_dentry->d_name.name);
+ __entry->flags = flags;
+ __entry->ret = ret;
+ ),
+
+ TP_printk("dev = (%d,%d), ino = %lu, old_name: %s, "
+ "new_name: %s, flags = %u, ret = %d",
+ show_dev_ino(__entry),
+ __get_str(old_name),
+ __get_str(new_name),
+ __entry->flags,
+ __entry->ret)
+);
+
TRACE_EVENT(f2fs_readdir,
TP_PROTO(struct inode *dir, loff_t start_pos, loff_t end_pos, int err),
--
2.40.1
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