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    SubjectRe: 2.6.23-rc2-mm1: rcutorture xtime usage
    On Fri, Aug 10, 2007 at 10:12:12AM -0700, Andrew Morton wrote:
    > On Fri, 10 Aug 2007 08:12:08 -0700 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
    >
    > > > One used to use sched_clock() for this, then get frowned at. Now we
    > > > have cpu_clock()...
    > >
    > > Hmmm... And cpu_clock() is not in 2.6.22, so must appear in some later
    > > release. Which means that the rate of API change in this area is a
    > > bit high, so I should avoid it like the plague.
    >
    > eh, it's been there for weeks. It is dust-encrusted.
    >
    > > Therefore, I should
    > > look for some other convenient source of entropy.
    > >
    > > One convenient source would the per-CPU statistics that rcutorture
    > > maintains. Of course, a given CPU's RNG is nearly in lock-step with
    > > its own statistics, but not with the adjacent CPU's statistics...
    > >
    > > I will send a patch.
    >
    > Please use cpu_clock(). It ain't going away.

    D'accord...

    Thanx, Paul
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