da0c636ea7
Convert the per cpu topology cpu masks to a per cpu variable. At least for machines which do have less possible cpus than NR_CPUS this can save a bit of memory (z/VM: max 64 vs 512 for performance_defconfig). This reduces the kernel image size by 100k. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
#ifndef _ASM_S390_TOPOLOGY_H
|
|
#define _ASM_S390_TOPOLOGY_H
|
|
|
|
#include <linux/cpumask.h>
|
|
|
|
struct sysinfo_15_1_x;
|
|
struct cpu;
|
|
|
|
#ifdef CONFIG_SCHED_BOOK
|
|
|
|
struct cpu_topology_s390 {
|
|
unsigned short thread_id;
|
|
unsigned short core_id;
|
|
unsigned short socket_id;
|
|
unsigned short book_id;
|
|
cpumask_t thread_mask;
|
|
cpumask_t core_mask;
|
|
cpumask_t book_mask;
|
|
};
|
|
|
|
DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology);
|
|
|
|
#define topology_physical_package_id(cpu) (per_cpu(cpu_topology, cpu).socket_id)
|
|
#define topology_thread_id(cpu) (per_cpu(cpu_topology, cpu).thread_id)
|
|
#define topology_thread_cpumask(cpu) (&per_cpu(cpu_topology, cpu).thread_mask)
|
|
#define topology_core_id(cpu) (per_cpu(cpu_topology, cpu).core_id)
|
|
#define topology_core_cpumask(cpu) (&per_cpu(cpu_topology, cpu).core_mask)
|
|
#define topology_book_id(cpu) (per_cpu(cpu_topology, cpu).book_id)
|
|
#define topology_book_cpumask(cpu) (&per_cpu(cpu_topology, cpu).book_mask)
|
|
|
|
#define mc_capable() 1
|
|
|
|
int topology_cpu_init(struct cpu *);
|
|
int topology_set_cpu_management(int fc);
|
|
void topology_schedule_update(void);
|
|
void store_topology(struct sysinfo_15_1_x *info);
|
|
void topology_expect_change(void);
|
|
const struct cpumask *cpu_coregroup_mask(int cpu);
|
|
|
|
#else /* CONFIG_SCHED_BOOK */
|
|
|
|
static inline void topology_schedule_update(void) { }
|
|
static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
|
|
static inline void topology_expect_change(void) { }
|
|
|
|
#endif /* CONFIG_SCHED_BOOK */
|
|
|
|
#define POLARIZATION_UNKNOWN (-1)
|
|
#define POLARIZATION_HRZ (0)
|
|
#define POLARIZATION_VL (1)
|
|
#define POLARIZATION_VM (2)
|
|
#define POLARIZATION_VH (3)
|
|
|
|
#include <asm-generic/topology.h>
|
|
|
|
#endif /* _ASM_S390_TOPOLOGY_H */
|