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Revert "topology: Add snapshot of possible sibling cpu mask changes"

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Cpu possible sibling cpu mask is only used by WALT for its cluster
population. And WALT is directly getting the cpu possible sibling mask.

So remove this unused cpu mask support by reverting commit:
'6df025a02c49f65("topology: Add snapshot of possible sibling
cpu mask changes")'.

Change-Id: If65842a37cad95e8b52425a1397d12c32a95dc1e
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
This commit is contained in:
Lingutla Chandrasekhar 2020-11-24 16:39:52 +05:30 • committed by Gerrit - the friendly Code Review server
commit c4e372d1f3
3 changed files with 0 additions and 39 deletions
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29
drivers/base/arch_topology.c
View file

@ -478,26 +478,6 @@ const struct cpumask *cpu_coregroup_mask(int cpu)
return core_mask;
}
#ifdef CONFIG_SCHED_WALT
void update_possible_siblings_masks(unsigned int cpuid)
{
struct cpu_topology *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
int cpu;
if (cpuid_topo->package_id == -1)
return;
for_each_possible_cpu(cpu) {
cpu_topo = &cpu_topology[cpu];
if (cpuid_topo->package_id != cpu_topo->package_id)
continue;
cpumask_set_cpu(cpuid, &cpu_topo->core_possible_sibling);
cpumask_set_cpu(cpu, &cpuid_topo->core_possible_sibling);
}
}
#endif
void update_siblings_masks(unsigned int cpuid)
{
struct cpu_topology *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
@ -577,9 +557,6 @@ __weak int __init parse_acpi_topology(void)
#if defined(CONFIG_ARM64) || defined(CONFIG_RISCV)
void __init init_cpu_topology(void)
{
#ifdef CONFIG_SCHED_WALT
int cpu;
#endif
reset_cpu_topology();
/*
@ -590,11 +567,5 @@ void __init init_cpu_topology(void)
reset_cpu_topology();
else if (of_have_populated_dt() && parse_dt_topology())
reset_cpu_topology();
#ifdef CONFIG_SCHED_WALT
else {
for_each_possible_cpu(cpu)
update_possible_siblings_masks(cpu);
}
#endif
}
#endif

7
include/linux/arch_topology.h
View file

@ -48,9 +48,6 @@ struct cpu_topology {
int llc_id;
cpumask_t thread_sibling;
cpumask_t core_sibling;
#ifdef CONFIG_SCHED_WALT
cpumask_t core_possible_sibling;
#endif
cpumask_t llc_sibling;
};
@ -62,10 +59,6 @@ extern struct cpu_topology cpu_topology[NR_CPUS];
#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
#ifdef CONFIG_SCHED_WALT
#define topology_possible_sibling_cpumask(cpu) \
(&cpu_topology[cpu].core_possible_sibling)
#endif
void init_cpu_topology(void);
void store_cpu_topology(unsigned int cpuid);
const struct cpumask *cpu_coregroup_mask(int cpu);

3
include/linux/topology.h
View file

@ -214,9 +214,6 @@ static inline int cpu_to_mem(int cpu)
#ifndef topology_die_cpumask
#define topology_die_cpumask(cpu) cpumask_of(cpu)
#endif
#ifndef topology_possible_sibling_cpumask
#define topology_possible_sibling_cpumask(cpu) cpumask_of(cpu)
#endif
#ifdef CONFIG_SCHED_SMT
static inline const struct cpumask *cpu_smt_mask(int cpu)