[RFC][PATCH 10/10 v1][RESEND] ext4: add two tracepoints in punching hole
From: Zheng Liu <hidden>
Date: 2012-07-22 07:51:41
Also in:
linux-fsdevel
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest, tracing · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Zheng Liu <redacted> This patch adds two tracepoints in ext4_ext_punch_hole. Signed-off-by: Zheng Liu <redacted> --- fs/ext4/extents.c | 3 ++ include/trace/events/ext4.h | 53 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2a526b4..0fb4ff5 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c@@ -4529,6 +4529,8 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length) loff_t first_page_offset, last_page_offset; int credits, err = 0; + trace_ext4_ext_punch_hole_enter(inode, offset, length); + mutex_lock(&inode->i_mutex); /* No need to punch hole beyond i_size */
@@ -4663,6 +4665,7 @@ out: ext4_journal_stop(handle); error: mutex_unlock(&inode->i_mutex); + trace_ext4_ext_punch_hole_exit(inode, offset, length, err); return err; } int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 5c17592..583f066 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h@@ -1312,6 +1312,59 @@ TRACE_EVENT(ext4_fallocate_exit, __entry->ret) ); +TRACE_EVENT(ext4_ext_punch_hole_enter, + TP_PROTO(struct inode *inode, loff_t offset, loff_t len), + + TP_ARGS(inode, offset, len), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( ino_t, ino ) + __field( loff_t, offset ) + __field( loff_t, len ) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->offset = offset; + __entry->len = len; + ), + + TP_printk("dev %d,%d ino %lu offset %lld len %lld", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long) __entry->ino, + __entry->offset, __entry->len) +); + +TRACE_EVENT(ext4_ext_punch_hole_exit, + TP_PROTO(struct inode *inode, loff_t offset, + loff_t len, int err), + + TP_ARGS(inode, offset, len, err), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( ino_t, ino ) + __field( loff_t, offset ) + __field( loff_t, len ) + __field( int, err ) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->offset = offset; + __entry->len = len; + __entry->err = err; + ), + + TP_printk("dev %d,%d ino %lu offset %lld len %lld err %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long) __entry->ino, + __entry->offset, __entry->len, __entry->err) +); + TRACE_EVENT(ext4_unlink_enter, TP_PROTO(struct inode *parent, struct dentry *dentry),
--
1.7.4.1