git.ipfire.org Git - thirdparty/kernel/linux.git/commit

author	Huacai Chen <chenhuacai@loongson.cn>
	Thu, 29 Jun 2023 12:58:43 +0000 (20:58 +0800)
committer	Huacai Chen <chenhuacai@loongson.cn>
	Thu, 29 Jun 2023 12:58:43 +0000 (20:58 +0800)
commit	f6f0c9a74a48448583c3cb0f3f067bc3fe0f13c6
tree	e31359d5a5de9d228a03ba15ca70a3855586c902	tree \| snapshot
parent	616500232e632dba8b03981eeccadacf2fbf1c30	commit \| diff

LoongArch: Add SMT (Simultaneous Multi-Threading) support

Loongson-3A6000 has SMT (Simultaneous Multi-Threading) support, each
physical core has two logical cores (threads). This patch add SMT probe
and scheduler support via ACPI PPTT.

If SCHED_SMT enabled, Loongson-3A6000 is treated as 4 cores, 8 threads;
If SCHED_SMT disabled, Loongson-3A6000 is treated as 8 cores, 8 threads.

Remove smp_num_siblings to support HMP (Heterogeneous Multi-Processing).

Signed-off-by: Liupu Wang <wangliupu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

arch/loongarch/Kconfig		diff \| blob \| blame \| history
arch/loongarch/include/asm/acpi.h		diff \| blob \| blame \| history
arch/loongarch/include/asm/cpu-info.h		diff \| blob \| blame \| history
arch/loongarch/kernel/acpi.c		diff \| blob \| blame \| history
arch/loongarch/kernel/proc.c		diff \| blob \| blame \| history
arch/loongarch/kernel/smp.c		diff \| blob \| blame \| history
drivers/acpi/Kconfig		diff \| blob \| blame \| history