linux-kernel - Re: [PATCH v9 2/2] x86/sgx: Add an attribute for the amount of SGX memory in a NUMA node

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Message-ID: <YX7uy3tZwBFQmAiR@kroah.com>
Date:   Sun, 31 Oct 2021 20:30:19 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>, reinette.chatre@...el.com,
        tony.luck@...el.com, linux-kernel@...r.kernel.org,
        linux-sgx@...r.kernel.org
Subject: Re: [PATCH v9 2/2] x86/sgx: Add an attribute for the amount of SGX
 memory in a NUMA node

On Sun, Oct 31, 2021 at 07:39:32PM +0200, Jarkko Sakkinen wrote:
> > > +static ssize_t size_show(struct device *dev, struct device_attribute *attr, char *buf)
> > > +{
> > > +       unsigned long size = 0;
> > > +       int nid;
> > > +
> > > +       for (nid = 0; nid < num_possible_nodes(); nid++) {
> > > +               if (dev == sgx_numa_nodes[nid].dev) {
> > > +                       size = sgx_numa_nodes[nid].size;
> > > +                       break;
> > > +               }
> > > +       }
> > > +
> > > +       return sysfs_emit(buf, "%lu\n", size);
> > > +}
> > > +DEVICE_ATTR_RO(size);
> > 
> > static?
> 
> The named ("sgx") attribute group is exported:
> 
> extern const struct attribute_group sgx_node_group;

That's fine, I am objecting to the fact that you now have added a global
symbol called device_attr_size.  Please make that static as that is a
VERY generic name.

thanks,

greg k-h