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/include/asm/topology.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/parisc/include/asm/topology.h (limited to 'arch/parisc/include/asm/topology.h') diff --git a/arch/parisc/include/asm/topology.h b/arch/parisc/include/asm/topology.h new file mode 100644 index 000000000000..6f0750c74e47 --- /dev/null +++ b/arch/parisc/include/asm/topology.h @@ -0,0 +1,36 @@ +#ifndef _ASM_PARISC_TOPOLOGY_H +#define _ASM_PARISC_TOPOLOGY_H + +#ifdef CONFIG_PARISC_CPU_TOPOLOGY + +#include + +struct cputopo_parisc { + int thread_id; + int core_id; + int socket_id; + cpumask_t thread_sibling; + cpumask_t core_sibling; +}; + +extern struct cputopo_parisc cpu_topology[NR_CPUS]; + +#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) +#define topology_core_id(cpu) (cpu_topology[cpu].core_id) +#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) +#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) + +void init_cpu_topology(void); +void store_cpu_topology(unsigned int cpuid); +const struct cpumask *cpu_coregroup_mask(int cpu); + +#else + +static inline void init_cpu_topology(void) { } +static inline void store_cpu_topology(unsigned int cpuid) { } + +#endif + +#include + +#endif /* _ASM_ARM_TOPOLOGY_H */ -- cgit v1.2.3-59-g8ed1b