linux-kernel - Re: [PATCH] Add PM_TRACE x86

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Message-ID: <20070210084217.GJ6152@kernel.dk>
Date:	Sat, 10 Feb 2007 09:42:17 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Nigel Cunningham <nigel@...el.suspend2.net>,
	Otavio Salvador <otavio@...ian.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Add PM_TRACE x86_64 support.

On Fri, Feb 09 2007, Pavel Machek wrote:
> Hi!
> 
> > > > Nigel Cunningham <nigel@...el.suspend2.net> writes:
> > > > 
> > > > > -	for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ; tracedata += 6) {
> > > > > +	for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ; tracedata += 2 + sizeof(unsigned long)) {
> > > > 
> > > > Could you split this line?
> > > 
> > > Sure.
> > > 
> > > -- New version -- (What's the right way to do this?)
> > > 
> > > This patch add x86_64 support for PM_TRACE, and shifts per-arch code to
> > > the appropriate subdirectories.
> > > 
> > > Symbol exports are added so tracing can be used from drivers built as
> > > modules too.
> > 
> > Don't include exports in a patch that doesn't use them. Introduce the
> > exports in a later patch series, for when you actually need it.
> 
> It is debugging infrastructure, so export actually makes sense... It
> will not ever be used in mainline kernel; you need to modify code
> manually to use this code..

Then add the exports while you are modifying the other code, it's no
reason to put it in mainline.

-- 
Jens Axboe

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