On Thu, Sep 20, 2012 at 11:08:15PM -0700, David O'Brien wrote: > On Fri, Sep 21, 2012 at 07:35:49AM +0200, Pawel Jakub Dawidek wrote: > > Note that adding sysctl to turn off entropy harvesting from > > device_attach() is pretty useless, as sysctls can be changed once we > > start userland and then all device_attach() are already called (modulo > > drivers loaded later). > > That is what I had in mind -- .ko drivers loaded post 'initrandom'. > > The same could be said for kern.random.sys.harvest.interrupt. > By the time kern.random.sys.harvest.interrupt can be turned off, > my test system has already processed 784 'origin interrupt' queue > entries and went from kern.random.sys.seeded=0->1.
Yes, this is exactly why I'd like to see corresponding tunable for all those sysctls. -- 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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