linux-kernel - Re: [PATCH 8/13] cpumask: use mm

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Date:	Wed, 23 Sep 2009 22:29:01 +0900
From:	Hirokazu Takata <takata@...ux-m32r.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Hirokazu Takata <takata@...ux-m32r.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/13] cpumask: use mm_cpumask() wrapper: m32r

Hello,

I apologize for my too late reply.

I've checked the patch and fixed two typos.

Thank you.

Signed-off-by: Hirokazu Takata <takata@...ux-m32r.org>

---
 arch/m32r/include/asm/mmu_context.h |    2 +-
 arch/m32r/kernel/smp.c              |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/m32r/include/asm/mmu_context.h b/arch/m32r/include/asm/mmu_context.h
index a735cc5..a70a3df 100644
--- a/arch/m32r/include/asm/mmu_context.h
+++ b/arch/m32r/include/asm/mmu_context.h
@@ -135,7 +135,7 @@ static inline void switch_mm(struct mm_struct *prev,
 	}
 #ifdef CONFIG_SMP
 	else
-		if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next))
+		if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)))
 			activate_context(next);
 #endif /* CONFIG_SMP */
 }
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index e6ec3cc..1b7598e 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -469,7 +469,7 @@ void smp_invalidate_interrupt(void)
 		if (flush_mm == current->active_mm)
 			activate_context(flush_mm);
 		else
-			cpumask_clear(cpu_id, mm_cpumask(flush_mm));
+			cpumask_clear_cpu(cpu_id, mm_cpumask(flush_mm));
 	} else {
 		unsigned long va = flush_va;
 
-- 
1.6.4.4


At Fri, 12 Jun 2009 22:33:14 +0930,
Rusty Russell wrote:
> 
> 
> Makes code futureproof against the impending change to mm->cpu_vm_mask.
> 
> It's also a chance to use the new cpumask_ ops which take a pointer
> (the older ones are deprecated, but there's no hurry for arch code).
> 
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
> ---
>  arch/m32r/include/asm/mmu_context.h |    4 ++--
>  arch/m32r/kernel/smp.c              |    8 ++++----
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
> --- a/arch/m32r/kernel/smp.c
> +++ b/arch/m32r/kernel/smp.c
> @@ -264,7 +264,7 @@ void smp_flush_tlb_mm(struct mm_struct *
>  	preempt_disable();
>  	cpu_id = smp_processor_id();
>  	mmc = &mm->context[cpu_id];
> -	cpu_mask = mm->cpu_vm_mask;
> +	cpu_mask = *mm_cpumask(mm);
>  	cpu_clear(cpu_id, cpu_mask);
>  
>  	if (*mmc != NO_CONTEXT) {
> @@ -273,7 +273,7 @@ void smp_flush_tlb_mm(struct mm_struct *
>  		if (mm == current->mm)
>  			activate_context(mm);
>  		else
> -			cpu_clear(cpu_id, mm->cpu_vm_mask);
> +			cpumask_clear_cpu(cpu_id, mm_cpumask(mm));
>  		local_irq_restore(flags);
>  	}
>  	if (!cpus_empty(cpu_mask))
> @@ -334,7 +334,7 @@ void smp_flush_tlb_page(struct vm_area_s
>  	preempt_disable();
>  	cpu_id = smp_processor_id();
>  	mmc = &mm->context[cpu_id];
> -	cpu_mask = mm->cpu_vm_mask;
> +	cpu_mask = *mm_cpumask(mm);
>  	cpu_clear(cpu_id, cpu_mask);
>  
>  #ifdef DEBUG_SMP
> @@ -469,7 +469,7 @@ void smp_invalidate_interrupt(void)
>  		if (flush_mm == current->active_mm)
>  			activate_context(flush_mm);
>  		else
> -			cpu_clear(cpu_id, flush_mm->cpu_vm_mask);
> +			cpumask_clear(cpu_id, mm_cpumask(flush_mm));
>  	} else {
>  		unsigned long va = flush_va;
>  
> diff --git a/arch/m32r/include/asm/mmu_context.h b/arch/m32r/include/asm/mmu_context.h
> --- a/arch/m32r/include/asm/mmu_context.h
> +++ b/arch/m32r/include/asm/mmu_context.h
> @@ -127,7 +127,7 @@ static inline void switch_mm(struct mm_s
>  
>  	if (prev != next) {
>  #ifdef CONFIG_SMP
> -		cpu_set(cpu, next->cpu_vm_mask);
> +		cpumask_set_cpu(cpu, mm_cpumask(next));
>  #endif /* CONFIG_SMP */
>  		/* Set MPTB = next->pgd */
>  		*(volatile unsigned long *)MPTB = (unsigned long)next->pgd;
> @@ -135,7 +135,7 @@ static inline void switch_mm(struct mm_s
>  	}
>  #ifdef CONFIG_SMP
>  	else
> -		if (!cpu_test_and_set(cpu, next->cpu_vm_mask))
> +		if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next))
>  			activate_context(next);
>  #endif /* CONFIG_SMP */
>  }
> 
--
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