diff options
| author | Mohan Srinivasan <srmohan@google.com> | 2016-09-19 17:33:50 -0700 |
|---|---|---|
| committer | Runmin Wang <runminw@codeaurora.org> | 2017-04-17 10:31:20 -0700 |
| commit | bb4bf9d359f6c8f5ce24d546eed87f8c940f7921 (patch) | |
| tree | a8c92e6fec564d2274e262357c1c75946be477c6 /fs/ext4/inline.c | |
| parent | 0293b8a7d07a2ef84bd227b81f20b966af900c51 (diff) | |
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 <srmohan@google.com>
Git-commit: 32cbbe59538d2dd0b77822cc27ce32ca487c467d
Git-repo: https://android.googlesource.com/kernel/common/
[runminw@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
Diffstat (limited to 'fs/ext4/inline.c')
| -rw-r--r-- | fs/ext4/inline.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index cb3d6f6419cd..eb5a10228013 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -18,6 +18,7 @@ #include "ext4.h" #include "xattr.h" #include "truncate.h" +#include <trace/events/android_fs.h> #define EXT4_XATTR_SYSTEM_DATA "data" #define EXT4_MIN_INLINE_DATA_SIZE ((sizeof(__le32) * EXT4_N_BLOCKS)) @@ -502,6 +503,9 @@ int ext4_readpage_inline(struct inode *inode, struct page *page) return -EAGAIN; } + trace_android_fs_dataread_start(inode, page_offset(page), PAGE_SIZE, + current->pid, current->comm); + /* * Current inline data can only exist in the 1st page, * So for all the other pages, just set them uptodate. @@ -513,6 +517,8 @@ int ext4_readpage_inline(struct inode *inode, struct page *page) SetPageUptodate(page); } + trace_android_fs_dataread_end(inode, page_offset(page), PAGE_SIZE); + up_read(&EXT4_I(inode)->xattr_sem); unlock_page(page); |