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    SubjectRe: [PATCH] ARM: twd: Adjust localtimer frequency withcpufreqnotifiers
    On Fri, 13 May 2011, Colin Cross wrote:
    > On Fri, May 13, 2011 at 3:02 AM, Thomas Gleixner <tglx@linutronix.de> wrote:
    > >  /**
    > > + * clockevents_reconfigure - Reconfigure and reprogram a clock event device.
    > > + * @dev:       device to modify
    > > + * @freq:      new device frequency
    > > + * @secr:      guaranteed runtime conversion range in seconds
    > > + *
    > > + * Reconfigure and reprogram a clock event device in oneshot
    > > + * mode. Must only be called from low level idle code where
    > > + * interaction with hrtimers/nohz code etc. is not possible and
    > > + * guaranteed not to conflict. Must be called with interrupts
    > > + * disabled!
    > > + * Returns 0 on success, -ETIME when the event is in the past or
    > > + * -EINVAL when called with invalid parameters.
    > > + */
    > We need to call this from a cpufreq notifier with interrupts disabled,
    > not from idle.

    That works as well. Comments needs update. The important thing is that
    neither a timer interrupt nor a hrtimer function should interfere on
    that very cpu.

    Thanks,

    tglx
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