From: Chao Yu Subject: [f2fs-dev][PATCH 5/6] f2fs: add a tracepoint for f2fs_read_data_page Date: Tue, 06 May 2014 16:53:08 +0800 Message-ID: <004701cf6908$bdb6c380$39244a80$@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Content-language: zh-cn Sender: linux-fsdevel-owner@vger.kernel.org To: Jaegeuk Kim Cc: linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-f2fs-devel.lists.sourceforge.net This patch adds a tracepoint for f2fs_read_data_page to trace when page is readed by user. Signed-off-by: Chao Yu --- fs/f2fs/data.c | 2 ++ include/trace/events/f2fs.h | 15 +++++++++++++-- 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 21bfafa..8c250a5 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -713,6 +713,8 @@ static int f2fs_read_data_page(struct file *file, struct page *page) struct inode *inode = page->mapping->host; int ret; + trace_f2fs_readpage(page, DATA); + /* If the file has inline data, try to read it directlly */ if (f2fs_has_inline_data(inode)) ret = f2fs_read_inline_data(inode, page); diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 91b1fcc..b983990 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -732,6 +732,7 @@ DECLARE_EVENT_CLASS(f2fs__page, __field(int, dir) __field(pgoff_t, index) __field(int, dirty) + __field(int, uptodate) ), TP_fast_assign( @@ -741,14 +742,17 @@ DECLARE_EVENT_CLASS(f2fs__page, __entry->dir = S_ISDIR(page->mapping->host->i_mode); __entry->index = page->index; __entry->dirty = PageDirty(page); + __entry->uptodate = PageUptodate(page); ), - TP_printk("dev = (%d,%d), ino = %lu, %s, %s, index = %lu, dirty = %d", + TP_printk("dev = (%d,%d), ino = %lu, %s, %s, index = %lu, " + "dirty = %d, uptodate = %d", show_dev_ino(__entry), show_block_type(__entry->type), show_file_type(__entry->dir), (unsigned long)__entry->index, - __entry->dirty) + __entry->dirty, + __entry->uptodate) ); DEFINE_EVENT(f2fs__page, f2fs_writepage, @@ -758,6 +762,13 @@ DEFINE_EVENT(f2fs__page, f2fs_writepage, TP_ARGS(page, type) ); +DEFINE_EVENT(f2fs__page, f2fs_readpage, + + TP_PROTO(struct page *page, int type), + + TP_ARGS(page, type) +); + DEFINE_EVENT(f2fs__page, f2fs_set_page_dirty, TP_PROTO(struct page *page, int type), -- 1.7.9.5