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    SubjectRe: [RFC] [PATCH -rt 5/5] cpufreq: get rid of get_online_cpus()/put_online_cpus()


    On Mon, 24 Oct 2011, Yong Zhang wrote:

    > On Wed, Oct 19, 2011 at 11:12:20AM +0200, Thomas Gleixner wrote:
    > > On Sun, 16 Oct 2011, Yong Zhang wrote:
    > >
    > > > Fix below false positive (seems this is not a real deadlock scenario)
    > > > lockdep warning:
    > >
    > > This looks like you caused it with patch 1.
    >
    > Hmmm, yup.
    > CPU_DOWN_PREPARE will be under cpu_hotplug.lock.
    >
    > > Both need a bit more
    > > thought, but thanks for catching that.
    >
    > No sure whether it's big issue or not.
    > Mind showing more about your concern?

    This is probably not the only place which will run into that issue and
    I have not much interest to patch all those sites.

    Thanks,

    tglx


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