From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
This patch adds some tracepoints in extent status tree.
Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
---
fs/ext4/extents_status.c | 8 +++
include/trace/events/ext4.h | 101 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 109 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index bd4e589..1c82340 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -10,6 +10,8 @@
#include "extents_status.h"
#include "ext4_extents.h"
+#include <trace/events/ext4.h>
+
/*
* extents status tree implementation for ext4.
*
@@ -188,6 +190,8 @@ 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);
+
es->len = 0;
tree = &EXT4_I(inode)->i_es_tree;
es1 = __es_tree_search(&tree->root, es->start);
@@ -202,6 +206,8 @@ ext4_lblk_t ext4_es_find_extent(struct inode *inode, struct extent_status *es)
}
}
+ trace_ext4_es_find_extent_exit(inode, es, ret);
+
return ret;
}
@@ -282,6 +288,7 @@ int ext4_es_add_space(struct inode *inode, ext4_lblk_t offset, ext4_lblk_t len)
BUG_ON(end <= offset);
es = tree->cache_es;
+ trace_ext4_es_add_space(inode, offset, len);
es_debug("add [%u/%u) to extent status tree of inode %lu\n",
offset, len, inode->i_ino);
@@ -351,6 +358,7 @@ int ext4_es_remove_space(struct inode *inode, ext4_lblk_t offset,
struct extent_status orig_es;
ext4_lblk_t len1, len2, end;
+ trace_ext4_es_remove_space(inode, offset, len);
es_debug("remove [%u/%u) from extent status tree of inode %lu\n",
offset, len, inode->i_ino);
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 69d8a69..5c17592 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -15,6 +15,7 @@ struct ext4_inode_info;
struct mpage_da_data;
struct ext4_map_blocks;
struct ext4_extent;
+struct extent_status;
#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))
@@ -2055,6 +2056,106 @@ TRACE_EVENT(ext4_ext_remove_space_done,
(unsigned short) __entry->eh_entries)
);
+TRACE_EVENT(ext4_es_add_space,
+ TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t len),
+
+ TP_ARGS(inode, start, len),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( loff_t, start )
+ __field( loff_t, len )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->start = start;
+ __entry->len = len;
+ ),
+
+ TP_printk("dev %d,%d ino %lu es [%lld/%lld)",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->start, __entry->len)
+);
+
+TRACE_EVENT(ext4_es_remove_space,
+ TP_PROTO(struct inode *inode, ext4_lblk_t start, ext4_lblk_t len),
+
+ TP_ARGS(inode, start, len),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( loff_t, start )
+ __field( loff_t, len )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->start = start;
+ __entry->len = len;
+ ),
+
+ TP_printk("dev %d,%d ino %lu es [%lld/%lld)",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->start, __entry->len)
+);
+
+TRACE_EVENT(ext4_es_find_extent_enter,
+ TP_PROTO(struct inode *inode, ext4_lblk_t start),
+
+ TP_ARGS(inode, start),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( ext4_lblk_t, start )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->start = start;
+ ),
+
+ TP_printk("dev %d,%d ino %lu start %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino, __entry->start)
+);
+
+TRACE_EVENT(ext4_es_find_extent_exit,
+ TP_PROTO(struct inode *inode, struct extent_status *es,
+ ext4_lblk_t ret),
+
+ TP_ARGS(inode, es, ret),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( ext4_lblk_t, start )
+ __field( ext4_lblk_t, len )
+ __field( ext4_lblk_t, ret )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->start = es->start;
+ __entry->len = es->len;
+ __entry->ret = ret;
+ ),
+
+ TP_printk("dev %d,%d ino %lu es [%u/%u) ret %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->ino,
+ __entry->start, __entry->len, __entry->ret)
+);
+
#endif /* _TRACE_EXT4_H */
/* This part must be outside protection */
--
1.7.4.1
--
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