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    SubjectRe: [PATCH v6 1/5] powerpc/85xx: implement hardware timebase sync
    On Wed, Jun 27, 2012 at 08:10:34AM +1000, Benjamin Herrenschmidt wrote:
    > On Tue, 2012-06-26 at 18:25 +0800, Zhao Chenhui wrote:
    > > Do hardware timebase sync. Firstly, stop all timebases, and transfer
    > > the timebase value of the boot core to the other core. Finally,
    > > start all timebases.
    > >
    > > Only apply to dual-core chips, such as MPC8572, P2020, etc.
    > >
    > > Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
    > > Signed-off-by: Li Yang <leoli@freescale.com>
    > > ---
    > > Changes for v6:
    > > * added 85xx_TB_SYNC
    > > * added isync() after set_tb()
    > > * removed extra entries from mpc85xx_smp_guts_ids
    >
    > What's that CONFIG option for ?
    >
    > Cheers,
    > Ben.

    This option is to guard the timebase sync routines. It is selected
    when KEXEC or HOTPLUG_CPU is enabled on Freescale Book-E platforms.

    -Chenhui



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