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    SubjectRe: [PATCH] clockevents: Leave broadcast device shtudown only if the current device is always running.
    On Wed, 11 Apr 2012, Feng Tang wrote:
    > > Problem you encountered is not related to leaving the broadcast device
    > > in shutdown mode. Problem is that we didn't track the mode change to
    > > oneshot and later during idle entry/exit, when we request the broadcast
    > > device services using CLOCK_EVT_NOTIFY_BROADCAST_ENTER etc,
    > > tick_broadcast_oneshot_control() returns with out doing much as it
    > > thinks broadcast device is in periodic mode.
    > Just curious, IIUC, the tick_broadcast_switch_to_oneshot() is only called
    > during CPU init process in boot time or bring a offlined cpu back on. Why
    > is it related to the deep idle?

    Because a deep idle state might require the broadcast device and w/o
    Suresh's patch it can't use it because it's in the wrong state.



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