On 18/02/2025 15:10, Yicong Yang wrote: > From: Yicong Yang <yangyic...@hisilicon.com> > > The core CPU control framework supports runtime SMT control which > is not yet supported on arm64. Besides the general vulnerabilities > concerns we want this runtime control on our arm64 server for: > > - better single CPU performance in some cases > - saving overall power consumption > > This patchset implements it in the following aspects: > > - Provides a default topology_is_primary_thread() > - support retrieve SMT thread number on OF based system > - support retrieve SMT thread number on ACPI based system > - select HOTPLUG_SMT for arm64 > > Tests has been done on our ACPI based arm64 server and on ACPI/OF > based QEMU VMs.
[...] > Yicong Yang (4): > cpu/SMT: Provide a default topology_is_primary_thread() > arch_topology: Support SMT control for OF based system > arm64: topology: Support SMT control on ACPI based system > arm64: Kconfig: Enable HOTPLUG_SMT > > arch/arm64/Kconfig | 1 + > arch/arm64/kernel/topology.c | 66 +++++++++++++++++++++++++++++ > arch/powerpc/include/asm/topology.h | 1 + > arch/x86/include/asm/topology.h | 2 +- > drivers/base/arch_topology.c | 27 ++++++++++++ > include/linux/topology.h | 22 ++++++++++ > 6 files changed, 118 insertions(+), 1 deletion(-) With the review comments on the individual patches [0-3]/4: Reviewed-by: Dietmar Eggemann <dietmar.eggem...@arm.com>
