linux-kernel - Re: [PATCH] genirq/affinity: remove unused arg when building aff mask

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Message-ID: <20190603074112.GB11812@ming.t460p>
Date:   Mon, 3 Jun 2019 15:41:13 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Minwoo Im <minwoo.im.dev@...il.com>
Cc:     linux-kernel@...r.kernel.org, Minwoo Im <minwoo.im@...sung.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-block@...r.kernel.org
Subject: Re: [PATCH] genirq/affinity: remove unused arg when building aff mask

On Sun, Jun 02, 2019 at 08:21:17PM +0900, Minwoo Im wrote:
> When building affinity masks, the struct irq_affinity *affd is not
> needed because irq_create_affinity_masks() has already given a cursored
> current vector after pre_vectors via "curvec".
> 
> This patch removes unused argument for irq_build_affinity_masks() and
> __irq_build_affinity_masks().  No functions changes are included.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ming Lei <ming.lei@...hat.com>
> Cc: linux-block@...r.kernel.org
> Signed-off-by: Minwoo Im <minwoo.im.dev@...il.com>
> ---
>  kernel/irq/affinity.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c
> index f18cd5aa33e8..4352b08ae48d 100644
> --- a/kernel/irq/affinity.c
> +++ b/kernel/irq/affinity.c
> @@ -94,8 +94,7 @@ static int get_nodes_in_cpumask(cpumask_var_t *node_to_cpumask,
>  	return nodes;
>  }
>  
> -static int __irq_build_affinity_masks(const struct irq_affinity *affd,
> -				      unsigned int startvec,
> +static int __irq_build_affinity_masks(unsigned int startvec,
>  				      unsigned int numvecs,
>  				      unsigned int firstvec,
>  				      cpumask_var_t *node_to_cpumask,
> @@ -171,8 +170,7 @@ static int __irq_build_affinity_masks(const struct irq_affinity *affd,
>   *	1) spread present CPU on these vectors
>   *	2) spread other possible CPUs on these vectors
>   */
> -static int irq_build_affinity_masks(const struct irq_affinity *affd,
> -				    unsigned int startvec, unsigned int numvecs,
> +static int irq_build_affinity_masks(unsigned int startvec, unsigned int numvecs,
>  				    unsigned int firstvec,
>  				    struct irq_affinity_desc *masks)
>  {
> @@ -197,7 +195,7 @@ static int irq_build_affinity_masks(const struct irq_affinity *affd,
>  	build_node_to_cpumask(node_to_cpumask);
>  
>  	/* Spread on present CPUs starting from affd->pre_vectors */
> -	nr_present = __irq_build_affinity_masks(affd, curvec, numvecs,
> +	nr_present = __irq_build_affinity_masks(curvec, numvecs,
>  						firstvec, node_to_cpumask,
>  						cpu_present_mask, nmsk, masks);
>  
> @@ -212,7 +210,7 @@ static int irq_build_affinity_masks(const struct irq_affinity *affd,
>  	else
>  		curvec = firstvec + nr_present;
>  	cpumask_andnot(npresmsk, cpu_possible_mask, cpu_present_mask);
> -	nr_others = __irq_build_affinity_masks(affd, curvec, numvecs,
> +	nr_others = __irq_build_affinity_masks(curvec, numvecs,
>  					       firstvec, node_to_cpumask,
>  					       npresmsk, nmsk, masks);
>  	put_online_cpus();
> @@ -295,7 +293,7 @@ irq_create_affinity_masks(unsigned int nvecs, struct irq_affinity *affd)
>  		unsigned int this_vecs = affd->set_size[i];
>  		int ret;
>  
> -		ret = irq_build_affinity_masks(affd, curvec, this_vecs,
> +		ret = irq_build_affinity_masks(curvec, this_vecs,
>  					       curvec, masks);
>  		if (ret) {
>  			kfree(masks);
> -- 
> 2.21.0
> 

Looks fine:

Reviewed-by: Ming Lei <ming.lei@...hat.com>


Thanks,
Ming