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authorZhang Yi <yi.zhang@huawei.com>2024-02-20 14:57:59 +0300
committerChristian Brauner <brauner@kernel.org>2024-02-21 10:35:20 +0300
commit54943abce0927156ba9909f1a533b25410bfe2ca (patch)
treef85e5df8ee99ed436a7309c2a2faa666f180a4e8 /fs/iomap
parent19871b5c7a003946d3cd4209a348ab7c0df5dbad (diff)
downloadlinux-54943abce0927156ba9909f1a533b25410bfe2ca.tar.xz
iomap: add pos and dirty_len into trace_iomap_writepage_map
Since commit fd07e0aa23c4 ("iomap: map multiple blocks at a time"), we could map multi-blocks once a time, and the dirty_len indicates the expected map length, map_len won't large than it. The pos and dirty_len means the dirty range that should be mapped to write, add them into trace_iomap_writepage_map() could be more useful for debug. Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Link: https://lore.kernel.org/r/20240220115759.3445025-1-yi.zhang@huaweicloud.com Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/iomap')
-rw-r--r--fs/iomap/buffered-io.c2
-rw-r--r--fs/iomap/trace.h43
2 files changed, 43 insertions, 2 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 2ad0e287c704..ae4e2026e59e 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -1776,7 +1776,7 @@ static int iomap_writepage_map_blocks(struct iomap_writepage_ctx *wpc,
error = wpc->ops->map_blocks(wpc, inode, pos, dirty_len);
if (error)
break;
- trace_iomap_writepage_map(inode, &wpc->iomap);
+ trace_iomap_writepage_map(inode, pos, dirty_len, &wpc->iomap);
map_len = min_t(u64, dirty_len,
wpc->iomap.offset + wpc->iomap.length - pos);
diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h
index c16fd55f5595..3ef694f9489f 100644
--- a/fs/iomap/trace.h
+++ b/fs/iomap/trace.h
@@ -154,7 +154,48 @@ DEFINE_EVENT(iomap_class, name, \
TP_ARGS(inode, iomap))
DEFINE_IOMAP_EVENT(iomap_iter_dstmap);
DEFINE_IOMAP_EVENT(iomap_iter_srcmap);
-DEFINE_IOMAP_EVENT(iomap_writepage_map);
+
+TRACE_EVENT(iomap_writepage_map,
+ TP_PROTO(struct inode *inode, u64 pos, unsigned int dirty_len,
+ struct iomap *iomap),
+ TP_ARGS(inode, pos, dirty_len, iomap),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(u64, ino)
+ __field(u64, pos)
+ __field(u64, dirty_len)
+ __field(u64, addr)
+ __field(loff_t, offset)
+ __field(u64, length)
+ __field(u16, type)
+ __field(u16, flags)
+ __field(dev_t, bdev)
+ ),
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->pos = pos;
+ __entry->dirty_len = dirty_len;
+ __entry->addr = iomap->addr;
+ __entry->offset = iomap->offset;
+ __entry->length = iomap->length;
+ __entry->type = iomap->type;
+ __entry->flags = iomap->flags;
+ __entry->bdev = iomap->bdev ? iomap->bdev->bd_dev : 0;
+ ),
+ TP_printk("dev %d:%d ino 0x%llx bdev %d:%d pos 0x%llx dirty len 0x%llx "
+ "addr 0x%llx offset 0x%llx length 0x%llx type %s flags %s",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ MAJOR(__entry->bdev), MINOR(__entry->bdev),
+ __entry->pos,
+ __entry->dirty_len,
+ __entry->addr,
+ __entry->offset,
+ __entry->length,
+ __print_symbolic(__entry->type, IOMAP_TYPE_STRINGS),
+ __print_flags(__entry->flags, "|", IOMAP_F_FLAGS_STRINGS))
+);
TRACE_EVENT(iomap_iter,
TP_PROTO(struct iomap_iter *iter, const void *ops,