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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>
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ecda0de343
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4 changed files with 70 additions and 0 deletions
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@ -186,6 +186,8 @@ static int f2fs_write_meta_pages(struct address_space *mapping,
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struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
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long diff, written;
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trace_f2fs_writepages(mapping->host, wbc, META);
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/* collect a number of dirty meta pages and write together */
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if (wbc->for_kupdate ||
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get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))
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@ -860,6 +860,8 @@ static int f2fs_write_data_pages(struct address_space *mapping,
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int ret;
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long diff;
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trace_f2fs_writepages(mapping->host, wbc, DATA);
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/* deal with chardevs and other special file */
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if (!mapping->a_ops->writepage)
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return 0;
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@ -1242,6 +1242,8 @@ static int f2fs_write_node_pages(struct address_space *mapping,
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struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
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long diff;
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trace_f2fs_writepages(mapping->host, wbc, NODE);
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/* balancing f2fs's metadata in background */
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f2fs_balance_fs_bg(sbi);
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@ -772,6 +772,70 @@ DEFINE_EVENT(f2fs__page, f2fs_vm_page_mkwrite,
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TP_ARGS(page, type)
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);
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TRACE_EVENT(f2fs_writepages,
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TP_PROTO(struct inode *inode, struct writeback_control *wbc, int type),
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TP_ARGS(inode, wbc, type),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(int, type)
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__field(int, dir)
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__field(long, nr_to_write)
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__field(long, pages_skipped)
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__field(loff_t, range_start)
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__field(loff_t, range_end)
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__field(pgoff_t, writeback_index)
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__field(int, sync_mode)
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__field(char, for_kupdate)
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__field(char, for_background)
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__field(char, tagged_writepages)
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__field(char, for_reclaim)
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__field(char, range_cyclic)
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__field(char, for_sync)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->type = type;
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__entry->dir = S_ISDIR(inode->i_mode);
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__entry->nr_to_write = wbc->nr_to_write;
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__entry->pages_skipped = wbc->pages_skipped;
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__entry->range_start = wbc->range_start;
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__entry->range_end = wbc->range_end;
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__entry->writeback_index = inode->i_mapping->writeback_index;
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__entry->sync_mode = wbc->sync_mode;
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__entry->for_kupdate = wbc->for_kupdate;
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__entry->for_background = wbc->for_background;
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__entry->tagged_writepages = wbc->tagged_writepages;
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__entry->for_reclaim = wbc->for_reclaim;
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__entry->range_cyclic = wbc->range_cyclic;
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__entry->for_sync = wbc->for_sync;
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),
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TP_printk("dev = (%d,%d), ino = %lu, %s, %s, nr_to_write %ld, "
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"skipped %ld, start %lld, end %lld, wb_idx %lu, sync_mode %d, "
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"kupdate %u background %u tagged %u reclaim %u cyclic %u sync %u",
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show_dev_ino(__entry),
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show_block_type(__entry->type),
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show_file_type(__entry->dir),
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__entry->nr_to_write,
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__entry->pages_skipped,
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__entry->range_start,
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__entry->range_end,
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(unsigned long)__entry->writeback_index,
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__entry->sync_mode,
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__entry->for_kupdate,
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__entry->for_background,
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__entry->tagged_writepages,
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__entry->for_reclaim,
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__entry->range_cyclic,
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__entry->for_sync)
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);
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TRACE_EVENT(f2fs_submit_page_mbio,
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TP_PROTO(struct page *page, int rw, int type, block_t blk_addr),
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