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Commit 38d96287 authored by Will Deacon's avatar Will Deacon Committed by Catalin Marinas
Browse files

arm64: mm: kill mm_cpumask usage 



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

Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent c2775b2e

arch/arm64/kernel/smp.c

+0 −7
Original line number Diff line number Diff line
@@ -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;

}

arch/arm64/mm/context.c

+0 −2
Original line number Diff line number Diff line
@@ -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);

}