linux-kernel - How to distinguish original kernel vs -rt kernel

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Message-ID: <45EE8829.4060304@bull.net>
Date:	Wed, 07 Mar 2007 10:38:49 +0100
From:	Pierre Peiffer <pierre.peiffer@...l.net>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Sébastien Dugué <sebastien.dugue@...l.net>
Subject: How to distinguish original kernel vs -rt kernel

Hi,

Supposing I have an external kernel module which I would like to compile against 
both original kernel and -rt kernel, what is the proper/most elegant way to know 
which kernel I'm compiling with ?
I've only found the EXTRAVERSION define, am I missing a better way ?

In fact, I'm facing the problem of HRTIMER_ABS/REL being renamed to 
HRTIMER_MODE_ABS/REL with patch -rt. Is there a reason of this ?

Does anyone have an objection of keeping it the same (let's say 
HRTIMER_ABS/REL) in kernel -rt ?

Thanks,

-- 
Pierre
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