linux-kernel - Re: [PATCH v5 02/14] dmaengine: idxd: add IMS detection in base driver

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Message-ID: <20210210233000.GH4247@nvidia.com>
Date:   Wed, 10 Feb 2021 19:30:00 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Dave Jiang <dave.jiang@...el.com>
CC:     <alex.williamson@...hat.com>, <kwankhede@...dia.com>,
        <tglx@...utronix.de>, <vkoul@...nel.org>, <megha.dey@...el.com>,
        <jacob.jun.pan@...el.com>, <ashok.raj@...el.com>,
        <yi.l.liu@...el.com>, <baolu.lu@...el.com>, <kevin.tian@...el.com>,
        <sanjay.k.kumar@...el.com>, <tony.luck@...el.com>,
        <dan.j.williams@...el.com>, <eric.auger@...hat.com>,
        <parav@...lanox.com>, <netanelg@...lanox.com>,
        <shahafs@...lanox.com>, <pbonzini@...hat.com>,
        <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kvm@...r.kernel.org>
Subject: Re: [PATCH v5 02/14] dmaengine: idxd: add IMS detection in base
 driver

On Fri, Feb 05, 2021 at 01:53:05PM -0700, Dave Jiang wrote:

> diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
> index 21c1e23cdf23..ab5c76e1226b 100644
> +++ b/drivers/dma/idxd/sysfs.c
> @@ -1444,6 +1444,14 @@ static ssize_t numa_node_show(struct device *dev,
>  }
>  static DEVICE_ATTR_RO(numa_node);
>  
> +static ssize_t ims_size_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct idxd_device *idxd = container_of(dev, struct idxd_device, conf_dev);
> +
> +	return sprintf(buf, "%u\n", idxd->ims_size);
> +}

use sysfs_emit for all new sysfs functions please

Jason