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Message-Id: <1297231048-3458-3-git-send-email-tm@tao.ma>
Date: Wed, 9 Feb 2011 13:57:27 +0800
From: Tao Ma <tm@....ma>
To: linux-ext4@...r.kernel.org
Subject: [PATCH 3/4] ext4: Add new ext4 trim tracepoints
From: Tao Ma <boyu.mt@...bao.com>
Add ext4_trim_extent and ext4_trim_all_free.
Signed-off-by: Tao Ma <boyu.mt@...bao.com>
---
fs/ext4/mballoc.c | 5 ++++
include/trace/events/ext4.h | 49 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 806adb2..4eadac8 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;
@@ -4767,8 +4769,11 @@ 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;
+
ext4_lock_group(sb, group);
+ trace_ext4_trim_all_free(sb, group, start, max);
+
while (start < max) {
start = mb_find_next_zero_bit(bitmap, max, start);
if (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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