linux-kernel - Re: [PATCH 4/8] f2fs: add tracepoint for tracing the page i/o operations

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Date:	Mon, 18 Feb 2013 21:53:45 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Namjae Jeon <linkinjeon@...il.com>
Cc:	jaegeuk.kim@...sung.com, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Pankaj Kumar <pankaj.km@...sung.com>
Subject: Re: [PATCH 4/8] f2fs: add tracepoint for tracing the page i/o
 operations

On Tue, 2013-02-19 at 11:33 +0900, Namjae Jeon wrote:
> From: Namjae Jeon <namjae.jeon@...sung.com>
> 

I see you already took my advice in patch 3, but here's another one that
could be fixed.

-- Steve

> +TRACE_EVENT(f2fs_get_data_block_exit,
> +	TP_PROTO(struct inode *inode, int ret),
> +
> +	TP_ARGS(inode, ret),
> +
> +	TP_STRUCT__entry(
> +		__field(dev_t,	dev)
> +		__field(ino_t,	ino)
> +		__field(int,	ret)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->dev	= inode->i_sb->s_dev;
> +		__entry->ino	= inode->i_ino;
> +		__entry->ret	= ret;
> +	),
> +
> +	TP_printk("dev %d,%d ino %lu return value %d",
> +		  MAJOR(__entry->dev), MINOR(__entry->dev),
> +		  (unsigned long) __entry->ino, __entry->ret)
> +);
> +
>  #endif /* _TRACE_F2FS_H */
>  
>   /* This part must be outside protection */


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