linux-kernel - Re: [PATCH v2 1/3] cpuidle/coupled: Remove cpuidle_device::safe_state

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Date:	Tue, 25 Aug 2015 22:29:20 +0800
From:	pang.xunlei@....com.cn
To:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Xunlei Pang <pang.xunlei@...aro.org>
Subject: Re: [PATCH v2 1/3] cpuidle/coupled: Remove cpuidle_device::safe_state_index

Ping

Xunlei Pang <xlpang@....com>  wrote 2015-08-04 PM 01:48:55:
> [PATCH v2 1/3] cpuidle/coupled: Remove cpuidle_device::safe_state_index
> 
> From: Xunlei Pang <pang.xunlei@...aro.org>
> 
> cpuidle_device::safe_state_index need to be initialized before
> use, it should be the same as cpuidle_driver::safe_state_index.
> 
> We tackled this issue by removing the safe_state_index from the
> cpuidle_device structure and use the one in the cpuidle_driver
> structure instead.
> 
> Suggested-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> Signed-off-by: Xunlei Pang <pang.xunlei@...aro.org>
> ---
>  drivers/cpuidle/coupled.c | 4 ++--
>  include/linux/cpuidle.h   | 1 -
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
> index 7936dce..6493e40 100644
> --- a/drivers/cpuidle/coupled.c
> +++ b/drivers/cpuidle/coupled.c
> @@ -473,7 +473,7 @@ int cpuidle_enter_state_coupled(struct 
> cpuidle_device *dev,
>           return entered_state;
>        }
>        entered_state = cpuidle_enter_state(dev, drv,
> -         dev->safe_state_index);
> +         drv->safe_state_index);
>        local_irq_disable();
>     }
> 
> @@ -521,7 +521,7 @@ retry:
>        }
> 
>        entered_state = cpuidle_enter_state(dev, drv,
> -         dev->safe_state_index);
> +         drv->safe_state_index);
>        local_irq_disable();
>     }
> 
> diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
> index d075d34..786ad32 100644
> --- a/include/linux/cpuidle.h
> +++ b/include/linux/cpuidle.h
> @@ -84,7 +84,6 @@ struct cpuidle_device {
>     struct list_head    device_list;
> 
>  #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
> -   int         safe_state_index;
>     cpumask_t      coupled_cpus;
>     struct cpuidle_coupled   *coupled;
>  #endif
> -- 
> 1.9.1
> 
> 
> --
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