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cpumask: cpu_coregroup_mask(): x86

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Impact: New API

Like cpu_coregroup_map, but returns a (const) pointer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>
This commit is contained in:
Rusty Russell 2008-12-26 22:23:41 +10:30
parent 2258a5bb10
commit 030bb203e0
2 changed files with 9 additions and 3 deletions
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1
arch/x86/include/asm/topology.h
View file

@ -231,6 +231,7 @@ static inline int node_to_first_cpu(int node)
#endif
extern cpumask_t cpu_coregroup_map(int cpu);
extern const struct cpumask *cpu_coregroup_mask(int cpu);
#ifdef ENABLE_TOPO_DEFINES
#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)

11
arch/x86/kernel/smpboot.c
View file

@ -497,7 +497,7 @@ void __cpuinit set_cpu_sibling_map(int cpu)
}
/* maps the cpu to the sched domain representing multi-core */
cpumask_t cpu_coregroup_map(int cpu)
const struct cpumask *cpu_coregroup_mask(int cpu)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
/*
@ -505,9 +505,14 @@ cpumask_t cpu_coregroup_map(int cpu)
* And for power savings, we return cpu_core_map
*/
if (sched_mc_power_savings || sched_smt_power_savings)
return per_cpu(cpu_core_map, cpu);
return &per_cpu(cpu_core_map, cpu);
else
return c->llc_shared_map;
return &c->llc_shared_map;
}
cpumask_t cpu_coregroup_map(int cpu)
{
return *cpu_coregroup_mask(cpu);
}
static void impress_friends(void)