linux-kernel - Re: [PATCH] genirq: Remove the second parameter from handle_irq_event

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Date:	Wed, 2 Sep 2015 10:29:22 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Huang Shijie <shijie.huang@....com>, tglx@...utronix.de
Cc:	peterz@...radead.org, marc.zyngier@....com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] genirq: Remove the second parameter from
 handle_irq_event_percpu

On 2015/9/2 10:24, Huang Shijie wrote:
> Actually, we always use the first irq action of the @desc->action chain,
> this patch remove the second parameter from handle_irq_event_percpu() which
> makes the code more tidy.
> 
> Signed-off-by: Huang Shijie <shijie.huang@....com>
Reviewed-by: Jiang Liu <jiang.liu@...ux.intel.com>

> ---
>  kernel/irq/chip.c      | 2 +-
>  kernel/irq/handle.c    | 7 +++----
>  kernel/irq/internals.h | 2 +-
>  3 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
> index 6e40a95..27e4833 100644
> --- a/kernel/irq/chip.c
> +++ b/kernel/irq/chip.c
> @@ -680,7 +680,7 @@ handle_percpu_irq(unsigned int irq, struct irq_desc *desc)
>  	if (chip->irq_ack)
>  		chip->irq_ack(&desc->irq_data);
>  
> -	handle_irq_event_percpu(desc, desc->action);
> +	handle_irq_event_percpu(desc);
>  
>  	if (chip->irq_eoi)
>  		chip->irq_eoi(&desc->irq_data);
> diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
> index b6eeea8..bc2f892 100644
> --- a/kernel/irq/handle.c
> +++ b/kernel/irq/handle.c
> @@ -130,11 +130,11 @@ void __irq_wake_thread(struct irq_desc *desc, struct irqaction *action)
>  	wake_up_process(action->thread);
>  }
>  
> -irqreturn_t
> -handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
> +irqreturn_t handle_irq_event_percpu(struct irq_desc *desc)
>  {
>  	irqreturn_t retval = IRQ_NONE;
>  	unsigned int flags = 0, irq = desc->irq_data.irq;
> +	struct irqaction *action = desc->action;
>  
>  	do {
>  		irqreturn_t res;
> @@ -182,14 +182,13 @@ handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action)
>  
>  irqreturn_t handle_irq_event(struct irq_desc *desc)
>  {
> -	struct irqaction *action = desc->action;
>  	irqreturn_t ret;
>  
>  	desc->istate &= ~IRQS_PENDING;
>  	irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
>  	raw_spin_unlock(&desc->lock);
>  
> -	ret = handle_irq_event_percpu(desc, action);
> +	ret = handle_irq_event_percpu(desc);
>  
>  	raw_spin_lock(&desc->lock);
>  	irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
> diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
> index eee4b38..1be888c 100644
> --- a/kernel/irq/internals.h
> +++ b/kernel/irq/internals.h
> @@ -81,7 +81,7 @@ extern void irq_mark_irq(unsigned int irq);
>  
>  extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
>  
> -irqreturn_t handle_irq_event_percpu(struct irq_desc *desc, struct irqaction *action);
> +irqreturn_t handle_irq_event_percpu(struct irq_desc *desc);
>  irqreturn_t handle_irq_event(struct irq_desc *desc);
>  
>  /* Resending of interrupts :*/
> 
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