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/f2fs/data.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/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index f53826ec30f3..d9d008d055fb 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -26,6 +26,7 @@ #include "segment.h" #include "trace.h" #include <trace/events/f2fs.h> +#include <trace/events/android_fs.h> static void f2fs_read_end_io(struct bio *bio) { @@ -1405,6 +1406,8 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, struct dnode_of_data dn; int err = 0; + trace_android_fs_datawrite_start(inode, pos, len, + current->pid, current->comm); trace_f2fs_write_begin(inode, pos, len, flags); f2fs_balance_fs(sbi); @@ -1533,6 +1536,7 @@ static int f2fs_write_end(struct file *file, { struct inode *inode = page->mapping->host; + trace_android_fs_datawrite_end(inode, pos, len); trace_f2fs_write_end(inode, pos, len, copied); set_page_dirty(page); @@ -1586,6 +1590,16 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, trace_f2fs_direct_IO_enter(inode, offset, count, iov_iter_rw(iter)); + if (trace_android_fs_dataread_start_enabled() && + (iov_iter_rw(iter) == READ)) + trace_android_fs_dataread_start(inode, offset, + count, current->pid, + current->comm); + if (trace_android_fs_datawrite_start_enabled() && + (iov_iter_rw(iter) == WRITE)) + trace_android_fs_datawrite_start(inode, offset, count, + current->pid, current->comm); + if (iov_iter_rw(iter) == WRITE) { __allocate_data_blocks(inode, offset, count); if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { @@ -1599,6 +1613,13 @@ out: if (err < 0 && iov_iter_rw(iter) == WRITE) f2fs_write_failed(mapping, offset + count); + if (trace_android_fs_dataread_start_enabled() && + (iov_iter_rw(iter) == READ)) + trace_android_fs_dataread_end(inode, offset, count); + if (trace_android_fs_datawrite_start_enabled() && + (iov_iter_rw(iter) == WRITE)) + trace_android_fs_datawrite_end(inode, offset, count); + trace_f2fs_direct_IO_exit(inode, offset, count, iov_iter_rw(iter), err); return err; |