lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

s390/topology: cleanup topology code

Browse Source 
Mainly merge all different per-cpu arrays into a single array which
holds all topology information per logical cpu.
Also fix the broken core vs socket variable naming and simplify the
locking a bit.
When running in environments without topology information also
invent book, socket and core ids, so that not all ids are zero.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2012-11-12 10:03:25 +01:00
committed by Martin Schwidefsky
parent 0a4ccc9929
commit d1e57508fb
2 changed files with 72 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
arch/s390/include/asm/topology.h
View File

@@ -8,32 +8,34 @@ struct cpu;
#ifdef CONFIG_SCHED_BOOK
extern unsigned char cpu_socket_id[NR_CPUS];
#define topology_physical_package_id(cpu) (cpu_socket_id[cpu])
struct cpu_topology_s390 {
unsigned short core_id;
unsigned short socket_id;
unsigned short book_id;
cpumask_t core_mask;
cpumask_t book_mask;
};
extern unsigned char cpu_core_id[NR_CPUS];
extern cpumask_t cpu_core_map[NR_CPUS];
extern struct cpu_topology_s390 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_mask)
#define topology_book_id(cpu) (cpu_topology[cpu].book_id)
#define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask)
#define mc_capable() 1
static inline const struct cpumask *cpu_coregroup_mask(int cpu)
{
return &cpu_core_map[cpu];
return &cpu_topology[cpu].core_mask;
}
#define topology_core_id(cpu) (cpu_core_id[cpu])
#define topology_core_cpumask(cpu) (&cpu_core_map[cpu])
#define mc_capable() (1)
extern unsigned char cpu_book_id[NR_CPUS];
extern cpumask_t cpu_book_map[NR_CPUS];
static inline const struct cpumask *cpu_book_mask(int cpu)
{
return &cpu_book_map[cpu];
return &cpu_topology[cpu].book_mask;
}
#define topology_book_id(cpu) (cpu_book_id[cpu])
#define topology_book_cpumask(cpu) (&cpu_book_map[cpu])
int topology_cpu_init(struct cpu *);
int topology_set_cpu_management(int fc);
void topology_schedule_update(void);