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sched, s390: Create a dedicated topology table 

BOOK level is only relevant for s390 so we create a dedicated topology table
with BOOK level and remove it from default table.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Philipp Hachtmann <phacht@linux.vnet.ibm.com>
Cc: cmetcalf@tilera.com
Cc: benh@kernel.crashing.org
Cc: dietmar.eggemann@arm.com
Cc: preeti@linux.vnet.ibm.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
Link: http://lkml.kernel.org/r/1397209481-28542-3-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Vincent Guittot 2014-04-11 11:44:38 +02:00 committed by Ingo Molnar
parent 143e1e28cb
commit 2dfd747629
3 changed files with 21 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/s390/include/asm/topology.h
View File

@ -26,21 +26,12 @@ extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
#define mc_capable() 1
static inline const struct cpumask *cpu_coregroup_mask(int cpu)
{
return &cpu_topology[cpu].core_mask;
}
static inline const struct cpumask *cpu_book_mask(int cpu)
{
return &cpu_topology[cpu].book_mask;
}
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 */

20
arch/s390/kernel/topology.c
View File

@ -443,6 +443,23 @@ int topology_cpu_init(struct cpu *cpu)
return sysfs_create_group(&cpu->dev.kobj, &topology_cpu_attr_group);
}
const struct cpumask *cpu_coregroup_mask(int cpu)
{
return &cpu_topology[cpu].core_mask;
}
static const struct cpumask *cpu_book_mask(int cpu)
{
return &cpu_topology[cpu].book_mask;
}
static struct sched_domain_topology_level s390_topology[] = {
{ cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
{ cpu_book_mask, SD_INIT_NAME(BOOK) },
{ cpu_cpu_mask, SD_INIT_NAME(DIE) },
{ NULL, },
};
static int __init topology_init(void)
{
if (!MACHINE_HAS_TOPOLOGY) {
@ -451,6 +468,9 @@ static int __init topology_init(void)
}
set_topology_timer();
out:
set_sched_topology(s390_topology);
return device_create_file(cpu_subsys.dev_root, &dev_attr_dispatching);
}
device_initcall(topology_init);

3
kernel/sched/core.c
View File

@ -6023,9 +6023,6 @@ static struct sched_domain_topology_level default_topology[] = {
#endif
#ifdef CONFIG_SCHED_MC
{ cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
#endif
#ifdef CONFIG_SCHED_BOOK
{ cpu_book_mask, SD_INIT_NAME(BOOK) },
#endif
{ cpu_cpu_mask, SD_INIT_NAME(DIE) },
{ NULL, },