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

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Message-ID: <20070209225255.GC3949@ucw.cz>
Date:	Fri, 9 Feb 2007 22:52:55 +0000
From:	Pavel Machek <pavel@....cz>
To:	Jens Axboe <jens.axboe@...cle.com>
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.

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..

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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