On Fri, 22 Jan 2016 12:49:02 +0530 Shilpasri G Bhat <[email protected]> wrote:
> cpu_to_chip_id() does a DT walk through to find out the chip id by > taking a contended device tree lock. This adds an unnecessary overhead > in a hot path. So instead of calling cpu_to_chip_id() everytime cache > the chip ids for all cores in the array 'core_to_chip_map' and use it > in the hotpath. > > Reported-by: Anton Blanchard <[email protected]> > Signed-off-by: Shilpasri G Bhat <[email protected]> > Reviewed-by: Gautham R. Shenoy <[email protected]> snip Does the core_to_chip_map need to be updated/refreshed on/after/ a cpu (core) hotplug? I presume id's don't change Balbir
