From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ralf Mardorf <ralf.mardorf@alice-dsl.net>
Subject: Re: Kernel RT questions
Date: Mon, 25 Apr 2016 14:37:59 +0200
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On Mon, 25 Apr 2016 13:44:37 +0200 (CEST), helix250@libero.it wrote:
>root@beaglebone:~# uname -a
>Linux beaglebone 4.4.7 #2 SMP PREEMPT RT Thu Apr 21 14:48:58 CEST 2016 armv7l GNU/Linux
                                       ^^
                                       ^^

You are using a RT patched kernel. A kernel without the RT patch doesn't
include "RT", either for uname, nor for CONFIG_PREEMPT, but by using
"threadirqs" as boot option, a standard kernel has some RT abilities too.

As a side note, "cat /proc/config.gz | gunzip | grep PREEMPT" could be replaced
by "zgrep PREEMPT /proc/config.gz".