On 01/20/2011 03:42 AM, Santosh Shilimkar wrote:
On some architectures, secondary cores shares clock with primiary
core and hence scale together. Hence secondary core lpj calibration
is not necessary and can be skipped to save considerable time.
This can speed up the secondary cpu boot and hotplug cpu online
paths.
Discussion thread:
http://www.spinics.net/lists/arm-kernel/msg111124.html
There's already one way to do this with pre-calculated lpj.
Also, this isn't multi-platform friendly. You could accomplish the same
thing using the clock api to get the core frequency of each core and
only calculate lpj if the frequency is different.
Rob
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