On 06/08/2024 10:53, Yicong Yang wrote: > From: Yicong Yang <yangyic...@hisilicon.com> > > Currently if architectures want to support HOTPLUG_SMT they need to > provide a topology_is_primary_thread() telling the framework which > thread in the SMT cannot offline. However arm64 doesn't have a > restriction on which thread in the SMT cannot offline, a simplest > choice is that just make 1st thread as the "primary" thread. So > just make this as the default implementation in the framework and > let architectures like x86 that have special primary thread to > override this function.
IMHO, ARM64 (/ARM), RISCV and PARISC (SMP) use GENERIC_ARCH_TOPOLOGY (and drivers/base/arch_topology.c) so they could share topology_is_primary_thread() also there? [...]
