diff options
author | Zheng Liu <wenqing.lz@taobao.com> | 2012-11-08 21:57:33 -0500 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2012-11-08 21:57:33 -0500 |
commit | 992e9fdd7b3f656ab8aea895f0038336950774ed (patch) | |
tree | ac01802bc117516b111d1a3bd5f88617618bd8ca /fs/ext4 | |
parent | 51865fda28e585bdcc164474ff6438a9ccdbfada (diff) | |
download | linux-992e9fdd7b3f656ab8aea895f0038336950774ed.tar.gz linux-992e9fdd7b3f656ab8aea895f0038336950774ed.tar.bz2 linux-992e9fdd7b3f656ab8aea895f0038336950774ed.zip |
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')
-rw-r--r-- | fs/ext4/extents_status.c | 8 |
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); |