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Date: Fri, 09 Mar 2012 10:11:07 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] Xenomai stop working
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On 03/09/2012 07:06 AM, =E9=A9=AC=E5=BC=BA wrote:
> Hi Gilles,
>=20
> I have changed mxc_min_delay as follow
> mxc_min_delay =3D ((__ipipe_cpu_freq + 500000) / 1000000) ?: 1;
> ->
> mxc_min_delay =3D ((__ipipe_cpu_freq + 250000) / 500000) ?: 1;
> means make min delay form 1us to 2us, and it seems to work well. I need=
 a longer test to check it out.
>=20
> Another issue about this change is whether 2us is long enough? In other=
 words, Is 2us a threshold value that due to hardware or an assumed value=
 that make the possibility smaller? if it is the later one, 2us and someo=
ne bigger seems not to be a perfect solution.

You can try mxc_min_delay =3D 0xff, since it is what linux does in the
latest release.

--=20
                                                                Gilles.