From: Tao Ma <boyu.mt@xxxxxxxxxx>
Add ext4_trim_extent and ext4_trim_all_free.
Signed-off-by: Tao Ma <boyu.mt@xxxxxxxxxx>
---
fs/ext4/mballoc.c | 4 +++
include/trace/events/ext4.h | 49 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 02cff4a..fb5f765 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4715,6 +4715,8 @@ static int ext4_trim_extent(struct super_block *sb, int start, int count,
struct ext4_free_extent ex;
int ret = 0;
+ trace_ext4_trim_extent(sb, group, start, count);
+
assert_spin_locked(ext4_group_lock_ptr(sb, group));
ex.fe_start = start;
@@ -4767,6 +4769,8 @@ ext4_grpblk_t ext4_trim_all_free(struct super_block *sb, struct ext4_buddy *e4b,
group = e4b->bd_group;
start = (e4b->bd_info->bb_first_free > start) ?
e4b->bd_info->bb_first_free : start;
+
+ trace_ext4_trim_all_free(sb, group, start, max);
ext4_lock_group(sb, group);
while (start < max) {
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index e5e345f..b8e6aeb 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -1166,6 +1166,55 @@ DEFINE_EVENT(ext4__bitmap_load, ext4_mb_buddy_bitmap_load,
TP_ARGS(sb, group)
);
+DECLARE_EVENT_CLASS(ext4__trim,
+ TP_PROTO(struct super_block *sb,
+ ext4_group_t group,
+ ext4_grpblk_t start,
+ ext4_grpblk_t len),
+
+ TP_ARGS(sb, group, start, len),
+
+ TP_STRUCT__entry(
+ __field( int, dev_major )
+ __field( int, dev_minor )
+ __field( __u32, group )
+ __field( int, start )
+ __field( int, len )
+ ),
+
+ TP_fast_assign(
+ __entry->dev_major = MAJOR(sb->s_dev);
+ __entry->dev_minor = MINOR(sb->s_dev);
+ __entry->group = group;
+ __entry->start = start;
+ __entry->len = len;
+ ),
+
+ TP_printk("dev %d,%d group %u, start %d, len %d",
+ __entry->dev_major, __entry->dev_minor,
+ __entry->group, __entry->start, __entry->len)
+);
+
+DEFINE_EVENT(ext4__trim, ext4_trim_extent,
+
+ TP_PROTO(struct super_block *sb,
+ ext4_group_t group,
+ ext4_grpblk_t start,
+ ext4_grpblk_t len),
+
+ TP_ARGS(sb, group, start, len)
+);
+
+DEFINE_EVENT(ext4__trim, ext4_trim_all_free,
+
+ TP_PROTO(struct super_block *sb,
+ ext4_group_t group,
+ ext4_grpblk_t start,
+ ext4_grpblk_t len),
+
+ TP_ARGS(sb, group, start, len)
+);
+
#endif /* _TRACE_EXT4_H */
/* This part must be outside protection */
--
1.6.3.GIT
--
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