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ARM: smp_twd: Preserve prescaler on shutdown event
Preserve timer prescaler through timer shutdown. This is needed because timer shutdown is invoked on low power CPU transitions when the kernel switches to using the broadcast timer, and a governor may not update the prescaler after CPU powers back up. BUG=chrome-os-partner:5483 TEST=V8 benchmark regression is fixed. Change-Id: I35901b3fc606da3f90967d8591c9d015b2872015 Signed-off-by: Rakesh Iyer <email@example.com> Reviewed-on: http://gerrit.chromium.org/gerrit/6233 Reviewed-by: Sonny Rao <firstname.lastname@example.org>
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