linux-kernel - Re: [PATCH 3/3] PM / Sleep: Drop suspend_stats

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Date:	Sun, 12 Feb 2012 20:20:44 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Linux PM list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Randy Dunlap <rdunlap@...otime.net>
Subject: Re: [PATCH 3/3] PM / Sleep: Drop suspend_stats_update()

On 02/12/2012 04:36 AM, Rafael J. Wysocki wrote:

> From: Rafael J. Wysocki <rjw@...k.pl>
> 
> Since suspend_stats_update() is only called from pm_suspend(),
> move its code directly into that function and remove the static
> inline definition from include/linux/suspend.h.  Clean up
> pm_suspend() in the process.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> ---


Acked-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com>

Regards,
Srivatsa S. Bhat

>  include/linux/suspend.h |   16 ----------------
>  kernel/power/suspend.c  |   18 ++++++++++++------
>  2 files changed, 12 insertions(+), 22 deletions(-)
> 
> Index: linux/include/linux/suspend.h
> ===================================================================
> --- linux.orig/include/linux/suspend.h
> +++ linux/include/linux/suspend.h
> @@ -95,22 +95,6 @@ static inline void dpm_save_failed_step(
>  }
> 
>  /**
> - * suspend_stats_update - Update success/failure statistics of suspend-to-ram
> - *
> - * @error: Value returned by enter_state() function
> - */
> -static inline void suspend_stats_update(int error)
> -{
> -	if (error) {
> -		suspend_stats.fail++;
> -		dpm_save_failed_errno(error);
> -	} else {
> -		suspend_stats.success++;
> -	}
> -}
> -
> -
> -/**
>   * struct platform_suspend_ops - Callbacks for managing platform dependent
>   *	system sleep states.
>   *
> Index: linux/kernel/power/suspend.c
> ===================================================================
> --- linux.orig/kernel/power/suspend.c
> +++ linux/kernel/power/suspend.c
> @@ -316,12 +316,18 @@ static int enter_state(suspend_state_t s
>   */
>  int pm_suspend(suspend_state_t state)
>  {
> -	int ret;
> -	if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX) {
> -		ret = enter_state(state);
> -		suspend_stats_update(ret);
> -		return ret;
> +	int error;
> +
> +	if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
> +		return -EINVAL;
> +
> +	error = enter_state(state);
> +	if (error) {
> +		suspend_stats.fail++;
> +		dpm_save_failed_errno(error);
> +	} else {
> +		suspend_stats.success++;
>  	}
> -	return -EINVAL;
> +	return error;
>  }
>  EXPORT_SYMBOL(pm_suspend);
> 

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