From: Clark Williams <williams@redhat.com>
To: Michael Haberler <mail17@mah.priv.at>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: RT_PREEMPT autodetection from user program
Date: Mon, 21 Jan 2013 09:37:59 -0600 [thread overview]
Message-ID: <20130121093759.045119c8@redhat.com> (raw)
In-Reply-To: <97041258-E312-4163-96B2-9077EED68E0B@mah.priv.at>
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On Sun, 20 Jan 2013 01:49:59 +0100
Michael Haberler <mail17@mah.priv.at> wrote:
> Hi,
>
> I need to autodetect the RT kernel for an application which runs under RTAI, Xenomai, RT_PREEMPT and vanilla kernels.
>
> To support a unified binary, I need to runtime detect the RT OS - what are my best options for RT_PREEMPT? from https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO#Checking_the_Kernel I gather the single method:
>
> parsing 'ps' output for IRQ handlers being kthreads, i.e. for '[IRQ' or '[irq'
>
> any chance of doing better than that, or parsing of utsname.release for "-rt"? A false positive on a vanilla kernel could be a safety hazard.
>
>
A PREEMPT_RT kernel creates /sys/kernel/realtime when it boots. You
can just check for the existence of that file.
Clark
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prev parent reply other threads:[~2013-01-21 15:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-20 0:49 RT_PREEMPT autodetection from user program Michael Haberler
2013-01-20 1:56 ` Sven-Thorsten Dietrich
2013-01-20 9:49 ` Stanislav Meduna
2013-01-20 12:43 ` Michael Mueller
2013-01-21 15:37 ` Clark Williams [this message]
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