linux-kernel - Re: [RFC] Add inline routine to free memory used in kobject name

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Message-ID: <20131007201044.GA6305@kroah.com>
Date:	Mon, 7 Oct 2013 13:10:44 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC] Add inline routine to free memory used in kobject name

On Mon, Oct 07, 2013 at 12:43:41PM -0500, Larry Finger wrote:
> At present, if one wants to free the memory allocation used for
> a dev->kobj name, it is necessary to go quite deeply into the structure.

Why would you ever want to do this?

> To avoid this much dependence on the structure details in driver
> code, a new inline routine is created.
> 
> Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
> ---
> 
> Index: wireless-testing-save/include/linux/device.h
> ===================================================================
> --- wireless-testing-save.orig/include/linux/device.h
> +++ wireless-testing-save/include/linux/device.h
> @@ -27,6 +27,7 @@
>  #include <linux/ratelimit.h>
>  #include <linux/uidgid.h>
>  #include <asm/device.h>
> +#include <linux/slab.h>
>  
>  struct device;
>  struct device_private;
> @@ -789,6 +790,11 @@ static inline const char *dev_name(const
>  	return kobject_name(&dev->kobj);
>  }
>  
> +static inline void dev_free_name(struct device *dev)
> +{
> +	kfree(dev->kobj.name);
> +}

Please show how you would use this function, I can't add functions that
no one calls.

And given that this type of thing hasn't been needed before, I'm
thinking that it still isn't needed :)

thanks,

greg k-h
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