diff options
| author | Helge Deller <deller@gmx.de> | 2017-09-21 21:55:01 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2017-11-17 15:27:22 +0100 |
| commit | bf7b4c1b3c92f246a535a7c792177041d0442011 (patch) | |
| tree | 1bd779b15d0c77656f99b79a1e8950910daf43cf /arch/parisc/include | |
| parent | 05f016d2ca7a4fab99d5d5472168506ddf95e74f (diff) | |
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 <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include')
| -rw-r--r-- | arch/parisc/include/asm/topology.h | 36 |
1 files changed, 36 insertions, 0 deletions
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 <linux/cpumask.h> + +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 <asm-generic/topology.h> + +#endif /* _ASM_ARM_TOPOLOGY_H */ |