linux-kernel - Re: [PATCH v2 4/6] iommu/vt-d: Add debugfs extension to show register contents

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Date:   Wed, 22 Nov 2017 23:19:19 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Sohil Mehta <sohil.mehta@...el.com>,
        Joerg Roedel <joro@...tes.org>,
        Alex Williamson <alex.williamson@...hat.com>
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Ashok Raj <ashok.raj@...el.com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [PATCH v2 4/6] iommu/vt-d: Add debugfs extension to show
 register contents

On Wed, 2017-11-22 at 11:25 -0800, Sohil Mehta wrote:
> From: Gayatri Kammela <gayatri.kammela@...el.com>


> +static int intel_iommu_regs_open(struct inode *inode, struct file
> *file)
> +{
> +	return single_open(file, intel_iommu_debugfs_regs_show,
> +			   inode->i_private);
> +}
> +
> +static const struct file_operations intel_iommu_regs_fops = {
> +	.open		= intel_iommu_regs_open,
> +	.read		= seq_read,
> +	.llseek		= seq_lseek,
> +	.release	= single_release,
> +};

Please, be consistent with file name and functions, i.e.

intel_iommu_debugfs_regs_show -> intel_iommu_regset_show

and so on.

Moreover, see the patch I have just sent [1] and use same
DEFINE_SHOW_ATTRIBUTE() macro here. In that case we would easily move it
to seq_file.h for everyone to use in the future.

> +	if (!debugfs_create_file("intel_iommu_regset", S_IRUGO,
> +				 iommu_debug_root, NULL,
> &intel_iommu_regs_fops

[1]: https://marc.info/?l=linux-bluetooth&m=151138535801354&w=2
 

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy