From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Thu, 17 Sep 2015 13:50:17 +0100 Subject: [PATCH 08/10] arm64: mm: kill mm_cpumask usage In-Reply-To: <1442494219-6133-1-git-send-email-will.deacon@arm.com> References: <1442494219-6133-1-git-send-email-will.deacon@arm.com> Message-ID: <1442494219-6133-9-git-send-email-will.deacon@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org mm_cpumask isn't actually used for anything on arm64, so remove all the code trying to keep it up-to-date. Signed-off-by: Will Deacon --- arch/arm64/kernel/smp.c | 7 ------- arch/arm64/mm/context.c | 2 -- 2 files changed, 9 deletions(-) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index fdd4d4dbd64f..03b0aa28ea61 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -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; } diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c index 4b9ec4484e3f..f636a2639f03 100644 --- a/arch/arm64/mm/context.c +++ b/arch/arm64/mm/context.c @@ -132,7 +132,6 @@ set_asid: 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); } -- 2.1.4