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>> + int llc; >> + >> + if (!sched_cache_enabled()) >> + return false; >> + >> + if (env->sd->flags & SD_SHARE_LLC) >> + return false; >> + >> + /* only care about task migration among LLCs */ >> + if (child && !(child->flags & SD_SHARE_LLC)) > > nit. You can just check group->flags here. > Got it, we will simplify the code. thanks, Chenyu