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authorZheng Liu <wenqing.lz@taobao.com>2012-11-09 06:57:33 +0400
committerTheodore Ts'o <tytso@mit.edu>2012-11-09 06:57:33 +0400
commit992e9fdd7b3f656ab8aea895f0038336950774ed (patch)
treeac01802bc117516b111d1a3bd5f88617618bd8ca /fs/ext4/extents_status.c
parent51865fda28e585bdcc164474ff6438a9ccdbfada (diff)
downloadlinux-992e9fdd7b3f656ab8aea895f0038336950774ed.tar.xz
ext4: add some tracepoints in extent status tree
This patch adds some tracepoints in extent status tree. Signed-off-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents_status.c')
-rw-r--r--fs/ext4/extents_status.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 02c09be3d773..564d981a2fcc 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -14,6 +14,8 @@
#include "extents_status.h"
#include "ext4_extents.h"
+#include <trace/events/ext4.h>
+
/*
* According to previous discussion in Ext4 Developer Workshop, we
* will introduce a new structure called io tree to track all extent
@@ -224,6 +226,8 @@ ext4_lblk_t ext4_es_find_extent(struct inode *inode, struct extent_status *es)
struct rb_node *node;
ext4_lblk_t ret = EXT_MAX_BLOCKS;
+ trace_ext4_es_find_extent_enter(inode, es->start);
+
read_lock(&EXT4_I(inode)->i_es_lock);
tree = &EXT4_I(inode)->i_es_tree;
@@ -253,6 +257,8 @@ out:
}
read_unlock(&EXT4_I(inode)->i_es_lock);
+
+ trace_ext4_es_find_extent_exit(inode, es, ret);
return ret;
}
@@ -393,6 +399,7 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t offset,
struct ext4_es_tree *tree;
int err = 0;
+ trace_ext4_es_insert_extent(inode, offset, len);
es_debug("add [%u/%u) to extent status tree of inode %lu\n",
offset, len, inode->i_ino);
@@ -422,6 +429,7 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t offset,
ext4_lblk_t len1, len2, end;
int err = 0;
+ trace_ext4_es_remove_extent(inode, offset, len);
es_debug("remove [%u/%u) from extent status tree of inode %lu\n",
offset, len, inode->i_ino);