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On Thu, 9 Aug 2007 19:00:40 -0700 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote: > On Fri, Aug 10, 2007 at 03:31:46AM +0200, Adrian Bunk wrote: > > On Thu, Aug 09, 2007 at 01:51:06AM -0700, Andrew Morton wrote: > > >...> > > Changes since 2.6.23-rc2-mm1:> > >...> > > +allow-rcutorture-to-handle-synchronize_sched.patch > > >...> > > 2.6.23 queue > > >...> > > > All drivers were converted to no longer use xtime directly since it > > might be quite outdated, but this patch adds a usage of xtime.tv_nsec > > as RNG...> > This code doesn't care if the time is outdated, as it is simply > periodically perturbing an RNG, but OK.> > So, what interface are we supposed to be using instead? I cannot use > get_random_bytes() due to locking issues. This is not a cryptographically > secure usage, so the perturbation does not need to be extremely high > quality.> > On x86, I would just grab the low-order bits of the TSC, but all of the > world is not an x86. ;-)> One used to use sched_clock() for this, then get frowned at. Now we have cpu_clock()... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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