On Mon, Jul 08, 2019 at 10:24:30AM +0530, Parth Shah wrote: > When searching for an idle_sibling, scheduler first iterates to search for > an idle core and then for an idle CPU. By maintaining the idle CPU mask > while iterating through idle cores, we can mark non-idle CPUs for which > idle CPU search would not have to iterate through again. This is especially > true in a moderately load system > > Optimize idle CPUs search by marking already found non idle CPUs during > idle core search. This reduces iteration count when searching for idle > CPUs, resulting in lower iteration count.
Have you seen these patches: https://lkml.kernel.org/r/20180530142236.667774...@infradead.org I've meant to get back to that, but never quite had the time :/
