From bf7b4c1b3c92f246a535a7c792177041d0442011 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Thu, 21 Sep 2017 21:55:01 +0200 Subject: parisc: Add CPU topology support Add topology support, including multi-core scheduler support on PA8800/PA8900 CPUs and enhanced output in /proc/cpuinfo, e.g. lscpu now reports on a single-socket, dual-core machine: Architecture: parisc64 CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 1 Core(s) per socket: 2 Socket(s): 1 CPU family: PA-RISC 2.0 Model name: PA8800 (Mako) Signed-off-by: Helge Deller --- arch/parisc/Kconfig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'arch/parisc/Kconfig') diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 1fd3eb5b66c6..7171c21bb0af 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -32,6 +32,7 @@ config PARISC select GENERIC_PCI_IOMAP select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD + select GENERIC_CPU_DEVICES select GENERIC_STRNCPY_FROM_USER select SYSCTL_ARCH_UNALIGN_ALLOW select SYSCTL_EXCEPTION_TRACE @@ -288,6 +289,21 @@ config SMP If you don't know what to do here, say N. +config PARISC_CPU_TOPOLOGY + bool "Support cpu topology definition" + depends on SMP + default y + help + Support PARISC cpu topology definition. + +config SCHED_MC + bool "Multi-core scheduler support" + depends on PARISC_CPU_TOPOLOGY && PA8X00 + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + config IRQSTACKS bool "Use separate kernel stacks when processing interrupts" default y -- cgit