Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 030bb203 authored by Rusty Russell's avatar Rusty Russell
Browse files

cpumask: cpu_coregroup_mask(): x86 



Impact: New API

Like cpu_coregroup_map, but returns a (const) pointer.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarMike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>
parent 2258a5bb

arch/x86/include/asm/topology.h

+1 −0
Original line number Diff line number Diff line
@@ -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)

arch/x86/kernel/smpboot.c

+8 −3
Original line number Diff line number Diff line
@@ -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)