linux-kernel - Re: [RFC][PATCH] PM / Hibernate: Make some boot messages look less scary

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Date:	Tue, 28 Sep 2010 23:51:28 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Linux-pm mailing list" <linux-pm@...ts.linux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH] PM / Hibernate: Make some boot messages look less scary

On Friday, September 24, 2010, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@...k.pl>
> Subject: PM / Hibernate: Make some boot messages look less scary
> 
> The hibernate resume code checks if there is an image to resume from
> on every boot and, if the kernel is built with CONFIG_PM_DEBUG set
> and the image is not present, it prints some scary messages
> suggesting there was a boot error of some sort.  Apparently, some
> users are confused by them, so make them look less scary and adjust
> the other hibernate resume debug messages to match them.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>

OK, no one was objecting, so I applied this patch to suspend-2.6/linux-next.


> ---
>  kernel/power/hibernate.c |   12 ++++++------
>  kernel/power/swap.c      |    4 ++--
>  2 files changed, 8 insertions(+), 8 deletions(-)
> 
> Index: linux-2.6/kernel/power/swap.c
> ===================================================================
> --- linux-2.6.orig/kernel/power/swap.c
> +++ linux-2.6/kernel/power/swap.c
> @@ -929,13 +929,13 @@ put:
>  		if (error)
>  			blkdev_put(hib_resume_bdev, FMODE_READ);
>  		else
> -			pr_debug("PM: Signature found, resuming\n");
> +			pr_debug("PM: Image signature found, resuming\n");
>  	} else {
>  		error = PTR_ERR(hib_resume_bdev);
>  	}
>  
>  	if (error)
> -		pr_debug("PM: Error %d checking image file\n", error);
> +		pr_debug("PM: Image not found (code %d)\n", error);
>  
>  	return error;
>  }
> Index: linux-2.6/kernel/power/hibernate.c
> ===================================================================
> --- linux-2.6.orig/kernel/power/hibernate.c
> +++ linux-2.6/kernel/power/hibernate.c
> @@ -708,7 +708,7 @@ static int software_resume(void)
>  		goto Unlock;
>  	}
>  
> -	pr_debug("PM: Checking image partition %s\n", resume_file);
> +	pr_debug("PM: Checking hibernation image partition %s\n", resume_file);
>  
>  	/* Check if the device is there */
>  	swsusp_resume_device = name_to_dev_t(resume_file);
> @@ -733,10 +733,10 @@ static int software_resume(void)
>  	}
>  
>   Check_image:
> -	pr_debug("PM: Resume from partition %d:%d\n",
> +	pr_debug("PM: Hibernation image partition %d:%d present\n",
>  		MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
>  
> -	pr_debug("PM: Checking hibernation image.\n");
> +	pr_debug("PM: Looking for hibernation image.\n");
>  	error = swsusp_check();
>  	if (error)
>  		goto Unlock;
> @@ -768,14 +768,14 @@ static int software_resume(void)
>  		goto Done;
>  	}
>  
> -	pr_debug("PM: Reading hibernation image.\n");
> +	pr_debug("PM: Loading hibernation image.\n");
>  
>  	error = swsusp_read(&flags);
>  	swsusp_close(FMODE_READ);
>  	if (!error)
>  		hibernation_restore(flags & SF_PLATFORM_MODE);
>  
> -	printk(KERN_ERR "PM: Restore failed, recovering.\n");
> +	printk(KERN_ERR "PM: Failed to load hibernation image, recovering.\n");
>  	swsusp_free();
>  	thaw_processes();
>   Done:
> @@ -788,7 +788,7 @@ static int software_resume(void)
>  	/* For success case, the suspend path will release the lock */
>   Unlock:
>  	mutex_unlock(&pm_mutex);
> -	pr_debug("PM: Resume from disk failed.\n");
> +	pr_debug("PM: Hibernation image not present or could not be loaded.\n");
>  	return error;
>  close_finish:
>  	swsusp_close(FMODE_READ);
--
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