linux-kernel - Re: [PATCH 2/2] drivers/base/node: Use device_create_files() and device_remove

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Message-ID: <s5hlhkmfveq.wl-tiwai@suse.de>
Date:	Wed, 28 Jan 2015 22:27:25 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drivers/base/node: Use device_create_files() and device_remove_files()

At Wed, 28 Jan 2015 13:06:23 -0800,
Greg Kroah-Hartman wrote:
> 
> On Wed, Jan 28, 2015 at 09:46:14PM +0100, Takashi Iwai wrote:
> > Use the new helper functions to simplify the code.
> > 
> > Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > ---
> >  drivers/base/node.c | 24 ++++++++++++------------
> >  1 file changed, 12 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/base/node.c b/drivers/base/node.c
> > index a3b82e9c7f20..e567e7bde333 100644
> > --- a/drivers/base/node.c
> > +++ b/drivers/base/node.c
> > @@ -200,6 +200,16 @@ static ssize_t node_read_distance(struct device *dev,
> >  }
> >  static DEVICE_ATTR(distance, S_IRUGO, node_read_distance, NULL);
> >  
> > +static const struct device_attribute *node_dev_attrs[] = {
> > +	&dev_attr_cpumap,
> > +	&dev_attr_cpulist,
> > +	&dev_attr_meminfo,
> > +	&dev_attr_numastat,
> > +	&dev_attr_distance,
> > +	&dev_attr_vmstat,
> > +	NULL
> > +};
> > +
> >  #ifdef CONFIG_HUGETLBFS
> >  /*
> >   * hugetlbfs per node attributes registration interface:
> > @@ -276,12 +286,7 @@ static int register_node(struct node *node, int num, struct node *parent)
> >  	error = device_register(&node->dev);
> >  
> >  	if (!error){
> > -		device_create_file(&node->dev, &dev_attr_cpumap);
> > -		device_create_file(&node->dev, &dev_attr_cpulist);
> > -		device_create_file(&node->dev, &dev_attr_meminfo);
> > -		device_create_file(&node->dev, &dev_attr_numastat);
> > -		device_create_file(&node->dev, &dev_attr_distance);
> > -		device_create_file(&node->dev, &dev_attr_vmstat);
> > +		device_create_files(&node->dev, node_dev_attrs);
> 
> This should just be using an attribute group instead of these files all
> being created at once, care to switch the code to use that instead?

OK, this would be relatively easily converted to attribute group.
Let me check later...


Takashi
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