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From: Tao Ma <tao.ma@oracle.com>
To: ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH 2/5] ocfs2: Remove ENTRY from masklog.
Date: Wed, 10 Nov 2010 22:19:40 +0800	[thread overview]
Message-ID: <4CDAA9FC.9070606@oracle.com> (raw)
In-Reply-To: <20101110094335.GC31158@mail.oracle.com>

Joel Becker wrote:
> On Wed, Nov 10, 2010 at 10:52:20AM +0800, Tao Ma wrote:
>   
>> ENTRY is used to record the entry of a function.
>> But because it is added in so many functions, if we enable it,
>> the system logs get filled up quickly and cause too much I/O.
>> So actually no one can open it for a production system or even
>> for a test.
>>
>> So for mlog_entry_void, we just remove it.
>> for mlog_entry(...), we replace it with mlog(0,...).
>>     
>
> 	I'm not sure I like this.  One of the benefits of mlog_entry()
> was that you could turn on ML_xxx and not see these entry lines.  By
> replacing it with mlog(0, ...), all of those entry lines will appear if
> the file is enabled.
> 	I realize that many of them will be replaced in later patches.
> I just hope they all are ;-)
>   
Yeah, I will replace them with trace events later.

But you are right that the commit log should explain it. I will add some 
more comments in the next round.

Regards,
Tao

  reply	other threads:[~2010-11-10 14:19 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-10  2:51 [Ocfs2-devel] [PATCH 0/5] The first try of adding trace event to ocfs2 Tao Ma
2010-11-10  2:52 ` [Ocfs2-devel] [PATCH 1/5] ocfs2: Remove unused truncate function from alloc.c Tao Ma
2010-11-10  9:41   ` Joel Becker
2010-11-10  2:52 ` [Ocfs2-devel] [PATCH 2/5] ocfs2: Remove ENTRY from masklog Tao Ma
2010-11-10  9:43   ` Joel Becker
2010-11-10 14:19     ` Tao Ma [this message]
2010-11-10  2:52 ` [Ocfs2-devel] [PATCH 3/5] ocfs2: Remove EXIT " Tao Ma
2010-11-10  9:45   ` Joel Becker
2010-11-10 14:22     ` Tao Ma
2010-11-10  2:52 ` [Ocfs2-devel] [PATCH 4/5] ocfs2: Add ocfs2_trace.h Tao Ma
2010-11-10  9:48   ` Joel Becker
2010-11-10 14:33     ` Tao Ma
2010-11-10 22:19       ` Joel Becker
2010-11-10  2:52 ` [Ocfs2-devel] [PATCH 5/5] ocfs2: Remove mlog(0) from fs/ocfs2/alloc.c Tao Ma
2010-11-10  9:50   ` Joel Becker
2010-11-10 14:39     ` Tao Ma

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