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Commit e5748434 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: add a tracepoint for f2fs_write_{meta,node,data}_pages 



This patch adds a tracepoint for f2fs_write_{meta,node,data}_pages to trace when
pages are fsyncing/flushing.

Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
parent ecda0de3

fs/f2fs/checkpoint.c

+2 −0
Original line number Diff line number Diff line
@@ -186,6 +186,8 @@ static int f2fs_write_meta_pages(struct address_space *mapping, 
	struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);

	long diff, written;



	trace_f2fs_writepages(mapping->host, wbc, META);



	/* collect a number of dirty meta pages and write together */

	if (wbc->for_kupdate ||

		get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))

fs/f2fs/data.c

+2 −0
Original line number Diff line number Diff line
@@ -860,6 +860,8 @@ static int f2fs_write_data_pages(struct address_space *mapping, 
	int ret;

	long diff;



	trace_f2fs_writepages(mapping->host, wbc, DATA);



	/* deal with chardevs and other special file */

	if (!mapping->a_ops->writepage)

		return 0;

fs/f2fs/node.c

+2 −0
Original line number Diff line number Diff line
@@ -1242,6 +1242,8 @@ static int f2fs_write_node_pages(struct address_space *mapping, 
	struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);

	long diff;



	trace_f2fs_writepages(mapping->host, wbc, NODE);



	/* balancing f2fs's metadata in background */

	f2fs_balance_fs_bg(sbi);

include/trace/events/f2fs.h

+64 −0
Original line number Diff line number Diff line
@@ -772,6 +772,70 @@ DEFINE_EVENT(f2fs__page, f2fs_vm_page_mkwrite, 
	TP_ARGS(page, type)

);



TRACE_EVENT(f2fs_writepages,



	TP_PROTO(struct inode *inode, struct writeback_control *wbc, int type),



	TP_ARGS(inode, wbc, type),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(int,	type)

		__field(int,	dir)

		__field(long,	nr_to_write)

		__field(long,	pages_skipped)

		__field(loff_t,	range_start)

		__field(loff_t,	range_end)

		__field(pgoff_t, writeback_index)

		__field(int,	sync_mode)

		__field(char,	for_kupdate)

		__field(char,	for_background)

		__field(char,	tagged_writepages)

		__field(char,	for_reclaim)

		__field(char,	range_cyclic)

		__field(char,	for_sync)

	),



	TP_fast_assign(

		__entry->dev		= inode->i_sb->s_dev;

		__entry->ino		= inode->i_ino;

		__entry->type		= type;

		__entry->dir		= S_ISDIR(inode->i_mode);

		__entry->nr_to_write	= wbc->nr_to_write;

		__entry->pages_skipped	= wbc->pages_skipped;

		__entry->range_start	= wbc->range_start;

		__entry->range_end	= wbc->range_end;

		__entry->writeback_index = inode->i_mapping->writeback_index;

		__entry->sync_mode	= wbc->sync_mode;

		__entry->for_kupdate	= wbc->for_kupdate;

		__entry->for_background	= wbc->for_background;

		__entry->tagged_writepages	= wbc->tagged_writepages;

		__entry->for_reclaim	= wbc->for_reclaim;

		__entry->range_cyclic	= wbc->range_cyclic;

		__entry->for_sync	= wbc->for_sync;

	),



	TP_printk("dev = (%d,%d), ino = %lu, %s, %s, nr_to_write %ld, "

		"skipped %ld, start %lld, end %lld, wb_idx %lu, sync_mode %d, "

		"kupdate %u background %u tagged %u reclaim %u cyclic %u sync %u",

		show_dev_ino(__entry),

		show_block_type(__entry->type),

		show_file_type(__entry->dir),

		__entry->nr_to_write,

		__entry->pages_skipped,

		__entry->range_start,

		__entry->range_end,

		(unsigned long)__entry->writeback_index,

		__entry->sync_mode,

		__entry->for_kupdate,

		__entry->for_background,

		__entry->tagged_writepages,

		__entry->for_reclaim,

		__entry->range_cyclic,

		__entry->for_sync)

);



TRACE_EVENT(f2fs_submit_page_mbio,



	TP_PROTO(struct page *page, int rw, int type, block_t blk_addr),