From 32cbbe59538d2dd0b77822cc27ce32ca487c467d Mon Sep 17 00:00:00 2001 From: Mohan Srinivasan Date: Mon, 19 Sep 2016 17:33:50 -0700 Subject: ANDROID: fs: FS tracepoints to track IO. Adds tracepoints in ext4/f2fs/mpage to track readpages/buffered write()s. This allows us to track files that are being read/written to PIDs. Change-Id: I26bd36f933108927d6903da04d8cb42fd9c3ef3d Signed-off-by: Mohan Srinivasan --- fs/f2fs/inline.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'fs/f2fs/inline.c') diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index bda7126466c0..d2c5d69ba0b1 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -13,6 +13,7 @@ #include "f2fs.h" #include "node.h" +#include bool f2fs_may_inline_data(struct inode *inode) { @@ -84,14 +85,22 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page) { struct page *ipage; + trace_android_fs_dataread_start(inode, page_offset(page), + PAGE_SIZE, current->pid, + current->comm); + ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); if (IS_ERR(ipage)) { + trace_android_fs_dataread_end(inode, page_offset(page), + PAGE_SIZE); unlock_page(page); return PTR_ERR(ipage); } if (!f2fs_has_inline_data(inode)) { f2fs_put_page(ipage, 1); + trace_android_fs_dataread_end(inode, page_offset(page), + PAGE_SIZE); return -EAGAIN; } @@ -102,6 +111,8 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page) SetPageUptodate(page); f2fs_put_page(ipage, 1); + trace_android_fs_dataread_end(inode, page_offset(page), + PAGE_SIZE); unlock_page(page); return 0; } -- cgit v1.2.3