* Gautham R. Shenoy <[email protected]> [2018-08-20 11:11:44]: > From: "Gautham R. Shenoy" <[email protected]> > > Each of the SMT4 cores forming a big-core are more or less independent > units. Thus when multiple tasks are scheduled to run on the fused > core, we get the best performance when the tasks are spread across the > pair of SMT4 cores. > > This patch achieves this by setting the SMT level mask to correspond > to the smallcore sibling mask on big-core systems. This patch also > ensures that while checked for shared-caches on big-core system, we > use the smallcore_sibling_mask to compare with the l2_cache_mask. > This ensure that the CACHE level sched-domain is created, whose groups > correspond to the threads of the big-core. > > With this patch, the SMT sched-domain with SMT=8,4,2 on big-core > systems are as follows:
Reviewed-by: Srikar Dronamraju <[email protected]>
