From 70407fad85f2ec87a0cf56057c3267cd3aa22768 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Thu, 31 Jul 2014 21:11:22 +0800 Subject: [PATCH] f2fs: add tracepoint for f2fs_direct_IO This patch adds a tracepoint for f2fs_direct_IO. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 5 +++ include/trace/events/f2fs.h | 63 +++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index ec3c8860539e..03313099c51c 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1086,9 +1086,14 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, /* clear fsync mark to recover these blocks */ fsync_mark_clear(F2FS_SB(inode->i_sb), inode->i_ino); + trace_f2fs_direct_IO_enter(inode, offset, count, rw); + err = blockdev_direct_IO(rw, iocb, inode, iter, offset, get_data_block); if (err < 0 && (rw & WRITE)) f2fs_write_failed(mapping, offset + count); + + trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); + return err; } diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 7d2e70e75f16..d06d44363fea 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -587,6 +587,69 @@ TRACE_EVENT(f2fs_fallocate, __entry->ret) ); +TRACE_EVENT(f2fs_direct_IO_enter, + + TP_PROTO(struct inode *inode, loff_t offset, unsigned long len, int rw), + + TP_ARGS(inode, offset, len, rw), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, pos) + __field(unsigned long, len) + __field(int, rw) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pos = offset; + __entry->len = len; + __entry->rw = rw; + ), + + TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu rw = %d", + show_dev_ino(__entry), + __entry->pos, + __entry->len, + __entry->rw) +); + +TRACE_EVENT(f2fs_direct_IO_exit, + + TP_PROTO(struct inode *inode, loff_t offset, unsigned long len, + int rw, int ret), + + TP_ARGS(inode, offset, len, rw, ret), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(loff_t, pos) + __field(unsigned long, len) + __field(int, rw) + __field(int, ret) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pos = offset; + __entry->len = len; + __entry->rw = rw; + __entry->ret = ret; + ), + + TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu " + "rw = %d ret = %d", + show_dev_ino(__entry), + __entry->pos, + __entry->len, + __entry->rw, + __entry->ret) +); + TRACE_EVENT(f2fs_reserve_new_block, TP_PROTO(struct inode *inode, nid_t nid, unsigned int ofs_in_node), -- 2.20.1