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topology: Create core_cpus and die_cpus sysfs attributes

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Create CPU topology sysfs attributes: "core_cpus" and "core_cpus_list"

These attributes represent all of the logical CPUs that share the
same core.

These attriutes is synonymous with the existing "thread_siblings" and
"thread_siblings_list" attribute, which will be deprecated.

Create CPU topology sysfs attributes: "die_cpus" and "die_cpus_list".
These attributes represent all of the logical CPUs that share the
same die.

Suggested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/071c23a298cd27ede6ed0b6460cae190d193364f.1557769318.git.len.brown@intel.com
This commit is contained in:
Len Brown
2019-05-13 13:58:56 -04:00
committed by Thomas Gleixner
parent b73ed8dc05
commit 2e4c54dac7
7 changed files with 55 additions and 6 deletions
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1
arch/x86/include/asm/topology.h
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@@ -111,6 +111,7 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
#ifdef CONFIG_SMP
#define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu))
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
#define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))