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arm64: mm: kill mm_cpumask usage

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mm_cpumask isn't actually used for anything on arm64, so remove all the
code trying to keep it up-to-date.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Will Deacon
2015-10-06 18:46:28 +01:00
committed by Catalin Marinas
parent c2775b2ee5
commit 38d9628750
2 changed files with 0 additions and 9 deletions
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7
arch/arm64/kernel/smp.c
View File

@@ -142,7 +142,6 @@ asmlinkage void secondary_start_kernel(void)
*/
atomic_inc(&mm->mm_count);
current->active_mm = mm;
cpumask_set_cpu(cpu, mm_cpumask(mm));
set_my_cpu_offset(per_cpu_offset(smp_processor_id()));
printk("CPU%u: Booted secondary processor\n", cpu);
@@ -233,12 +232,6 @@ int __cpu_disable(void)
* OK - migrate IRQs away from this CPU
*/
migrate_irqs();
/*
* Remove this CPU from the vm mask set of all processes.
*/
clear_tasks_mm_cpumask(cpu);
return 0;
}

2
arch/arm64/mm/context.c
View File

@@ -132,7 +132,6 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
bump_gen:
asid |= generation;
cpumask_clear(mm_cpumask(mm));
return asid;
}
@@ -169,7 +168,6 @@ void check_and_switch_context(struct mm_struct *mm, unsigned int cpu)
raw_spin_unlock_irqrestore(&cpu_asid_lock, flags);
switch_mm_fastpath:
cpumask_set_cpu(cpu, mm_cpumask(mm));
cpu_switch_mm(mm->pgd, mm);
}