[PATCH 3/3] ext4: add needed paramter to, ext4_mb_discard_preallocations trace

[brookxu]

Add the needed value to ext4_mb_discard_preallocations trace, so
we can more easily observe the requested number of trim.

Signed-off-by: Chunguang Xu <brookxu@xxxxxxxxxxx>
---
Âinclude/trace/events/ext4.h | 14 ++++++++------
Â1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index cc41d69..61736d8 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -746,24 +746,26 @@
Â);
Â
ÂTRACE_EVENT(ext4_discard_preallocations,
-ÂÂÂ TP_PROTO(struct inode *inode),
+ÂÂÂ TP_PROTO(struct inode *inode, unsigned int needed),
Â
-ÂÂÂ TP_ARGS(inode),
+ÂÂÂ TP_ARGS(inode, needed),
Â
ÂÂÂÂ TP_STRUCT__entry(
-ÂÂÂ ÂÂÂ __field(ÂÂÂ dev_t,ÂÂÂ devÂÂÂ ÂÂÂ ÂÂÂ )
-ÂÂÂ ÂÂÂ __field(ÂÂÂ ino_t,ÂÂÂ inoÂÂÂ ÂÂÂ ÂÂÂ )
+ÂÂÂ ÂÂÂ __field(ÂÂÂ dev_t,ÂÂÂ ÂÂÂ devÂÂÂ ÂÂÂ )
+ÂÂÂ ÂÂÂ __field(ÂÂÂ ino_t,ÂÂÂ ÂÂÂ inoÂÂÂ ÂÂÂ )
+ÂÂÂ ÂÂÂ __field(ÂÂÂ unsigned int,ÂÂÂ neededÂÂÂ ÂÂÂ )
Â
ÂÂÂÂ ),
Â
ÂÂÂÂ TP_fast_assign(
ÂÂÂÂ ÂÂÂ __entry->devÂÂÂ = inode->i_sb->s_dev;
ÂÂÂÂ ÂÂÂ __entry->inoÂÂÂ = inode->i_ino;
+ÂÂÂ ÂÂÂ __entry->neededÂÂÂ = needed;
ÂÂÂÂ ),
Â
-ÂÂÂ TP_printk("dev %d,%d ino %lu",
+ÂÂÂ TP_printk("dev %d,%d ino %lu needed %u",
ÂÂÂÂ ÂÂÂ Â MAJOR(__entry->dev), MINOR(__entry->dev),
-ÂÂÂ ÂÂÂ Â (unsigned long) __entry->ino)
+ÂÂÂ ÂÂÂ Â (unsigned long) __entry->ino, __entry->needed)
Â);
Â
ÂTRACE_EVENT(ext4_mb_discard_preallocations,
-- 
1.8.3.1