Re: Collecting entropy from device_attach() times.
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On Wed, Sep 19, 2012 at 07:28:36PM +0100, RW wrote:
> On Tue, 18 Sep 2012 23:14:22 +0200
> Pawel Jakub Dawidek wrote:
>=20
> > Hi.
> >=20
>=20
> > The patch is here:
> >=20
> > http://people.freebsd.org/~pjd/patches/harvest_device_attach.patch
> >=20
> > Comments?
> >=20
>=20
> + attachtime =3D get_cyclecount() - attachtime;
>=20
> the above line is redundant since random_harvest() already contains a
> call to get_cyclecount().
Agreed, although in more recent patch I need total time, so I can
calculate how many bits it has, so I can estimate how much entropy there
is.
--=20
Pawel Jakub Dawidek http://www.wheelsystems.com
FreeBSD committer http://www.FreeBSD.org
Am I Evil? Yes, I Am! http://tupytaj.pl
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