linux-kernel - Re: [PATCH 0/10] Add yaffs2 file system: Fifth patchset

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Message-ID: <4D5DC368.2080003@bluewatersys.com>
Date:	Fri, 18 Feb 2011 13:55:04 +1300
From:	Ryan Mallon <ryan@...ewatersys.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Greg KH <greg@...ah.com>,
	Charles Manning <manningc2@...rix.gen.nz>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 0/10] Add yaffs2 file system:  Fifth patchset

On 02/18/2011 01:43 PM, Mark Brown wrote:
> On Thu, Feb 17, 2011 at 04:33:53PM -0800, Greg KH wrote:
>> On Fri, Feb 18, 2011 at 12:01:50AM +0000, Mark Brown wrote:
> 
>>> For the proc stuff - for tracing stuff then tracepoints are likely to be
>>> a good option if it's useful to people.
> 
>> Then use the in-kernel tracing functionality, don't roll your own.  And
>> that is not in /proc, so it should be there for this filesystem either.
> 
> That'd be the tracepoints I was mentioning, then...

Are you suggesting that the yaffs_trace function should be replaced with
tracepoints?

yaffs_trace is basically just a wrapper around printk, which I suggested
should be replaced with pr_debug so that it can be compiled out
completely. Other drivers and filesystems have similar custom debugging
functions.

I haven't used tracepoints, but it seems like they are better suited to
tracing specific events than as a general printk style debugging
replacement?

~Ryan

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