linux-kernel - Re: [PATCH] module: add kset_obj

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Date:	Thu, 11 Apr 2013 06:28:31 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Veaceslav Falico <vfalico@...hat.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	bhelgaas@...gle.com
Subject: Re: [PATCH] module: add kset_obj_exists() and use it

On Thu, Apr 11, 2013 at 11:55:37AM +0200, Veaceslav Falico wrote:
> However, I think my patch still adds something good, cause now we have 2
> cases where we basically do:
> 
> k = kset_find_obj();
> if (!k)
> 	return;
> kobject_put(k);
> 
> which adds useless overhead (by using kobject_get()/kobject_put(), and
> kobject_release() - which is called from kobject_put()) - where we should
> only verify if there exists a kobject with the specified name.
> 
> Should I resend it with a properly fixed commit message, or it's really not
> needed?

I don't think it's really needed, there is no speed/overhead issue here
and you need to do the kobject_get/put stuff anyway if you are trying to
look at a kobject.

thanks,

greg k-h
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