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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: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Chao Yu 2014-05-06 16:51:24 +08:00 committed by Jaegeuk Kim
parent ecda0de343
commit e574843438
4 changed files with 70 additions and 0 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -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))

2
fs/f2fs/data.c
View File

@ -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;

2
fs/f2fs/node.c
View File

@ -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);

64
include/trace/events/f2fs.h
View File

@ -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),