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Date: Fri, 28 May 2021 20:30:29 +0800
From: YueHaibing <yuehaibing@...wei.com>
To: <bvanassche@....org>, <dledford@...hat.com>, <jgg@...pe.ca>
CC: <linux-rdma@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] RDMA/srp: use DEVICE_ATTR_*() macro
forget this:
DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
will convert it in v2.
On 2021/5/26 21:35, YueHaibing wrote:
> Use DEVICE_ATTR_*() helper instead of plain DEVICE_ATTR,
> which makes the code a bit shorter and easier to read.
>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> drivers/infiniband/ulp/srp/ib_srp.c | 90 ++++++++++++++---------------
> 1 file changed, 45 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
> index 31f8aa2c40ed..e8ae75ab672c 100644
> --- a/drivers/infiniband/ulp/srp/ib_srp.c
> +++ b/drivers/infiniband/ulp/srp/ib_srp.c
> @@ -2891,23 +2891,23 @@ static int srp_slave_configure(struct scsi_device *sdev)
> return 0;
> }
>
> -static ssize_t show_id_ext(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t id_ext_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
>
> return sysfs_emit(buf, "0x%016llx\n", be64_to_cpu(target->id_ext));
> }
>
> -static ssize_t show_ioc_guid(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t ioc_guid_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
>
> return sysfs_emit(buf, "0x%016llx\n", be64_to_cpu(target->ioc_guid));
> }
>
> -static ssize_t show_service_id(struct device *dev,
> +static ssize_t service_id_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -2918,8 +2918,8 @@ static ssize_t show_service_id(struct device *dev,
> be64_to_cpu(target->ib_cm.service_id));
> }
>
> -static ssize_t show_pkey(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t pkey_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
>
> @@ -2929,16 +2929,16 @@ static ssize_t show_pkey(struct device *dev, struct device_attribute *attr,
> return sysfs_emit(buf, "0x%04x\n", be16_to_cpu(target->ib_cm.pkey));
> }
>
> -static ssize_t show_sgid(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t sgid_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
>
> return sysfs_emit(buf, "%pI6\n", target->sgid.raw);
> }
>
> -static ssize_t show_dgid(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t dgid_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> struct srp_rdma_ch *ch = &target->ch[0];
> @@ -2949,7 +2949,7 @@ static ssize_t show_dgid(struct device *dev, struct device_attribute *attr,
> return sysfs_emit(buf, "%pI6\n", ch->ib_cm.path.dgid.raw);
> }
>
> -static ssize_t show_orig_dgid(struct device *dev,
> +static ssize_t orig_dgid_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -2960,7 +2960,7 @@ static ssize_t show_orig_dgid(struct device *dev,
> return sysfs_emit(buf, "%pI6\n", target->ib_cm.orig_dgid.raw);
> }
>
> -static ssize_t show_req_lim(struct device *dev,
> +static ssize_t req_lim_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -2975,7 +2975,7 @@ static ssize_t show_req_lim(struct device *dev,
> return sysfs_emit(buf, "%d\n", req_lim);
> }
>
> -static ssize_t show_zero_req_lim(struct device *dev,
> +static ssize_t zero_req_lim_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -2983,7 +2983,7 @@ static ssize_t show_zero_req_lim(struct device *dev,
> return sysfs_emit(buf, "%d\n", target->zero_req_lim);
> }
>
> -static ssize_t show_local_ib_port(struct device *dev,
> +static ssize_t local_ib_port_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -2991,7 +2991,7 @@ static ssize_t show_local_ib_port(struct device *dev,
> return sysfs_emit(buf, "%d\n", target->srp_host->port);
> }
>
> -static ssize_t show_local_ib_device(struct device *dev,
> +static ssize_t local_ib_device_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -3000,15 +3000,15 @@ static ssize_t show_local_ib_device(struct device *dev,
> dev_name(&target->srp_host->srp_dev->dev->dev));
> }
>
> -static ssize_t show_ch_count(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t ch_count_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
>
> return sysfs_emit(buf, "%d\n", target->ch_count);
> }
>
> -static ssize_t show_comp_vector(struct device *dev,
> +static ssize_t comp_vector_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -3016,7 +3016,7 @@ static ssize_t show_comp_vector(struct device *dev,
> return sysfs_emit(buf, "%d\n", target->comp_vector);
> }
>
> -static ssize_t show_tl_retry_count(struct device *dev,
> +static ssize_t tl_retry_count_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -3024,7 +3024,7 @@ static ssize_t show_tl_retry_count(struct device *dev,
> return sysfs_emit(buf, "%d\n", target->tl_retry_count);
> }
>
> -static ssize_t show_cmd_sg_entries(struct device *dev,
> +static ssize_t cmd_sg_entries_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -3032,7 +3032,7 @@ static ssize_t show_cmd_sg_entries(struct device *dev,
> return sysfs_emit(buf, "%u\n", target->cmd_sg_cnt);
> }
>
> -static ssize_t show_allow_ext_sg(struct device *dev,
> +static ssize_t allow_ext_sg_show(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct srp_target_port *target = host_to_target(class_to_shost(dev));
> @@ -3040,22 +3040,22 @@ static ssize_t show_allow_ext_sg(struct device *dev,
> return sysfs_emit(buf, "%s\n", target->allow_ext_sg ? "true" : "false");
> }
>
> -static DEVICE_ATTR(id_ext, S_IRUGO, show_id_ext, NULL);
> -static DEVICE_ATTR(ioc_guid, S_IRUGO, show_ioc_guid, NULL);
> -static DEVICE_ATTR(service_id, S_IRUGO, show_service_id, NULL);
> -static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
> -static DEVICE_ATTR(sgid, S_IRUGO, show_sgid, NULL);
> -static DEVICE_ATTR(dgid, S_IRUGO, show_dgid, NULL);
> -static DEVICE_ATTR(orig_dgid, S_IRUGO, show_orig_dgid, NULL);
> -static DEVICE_ATTR(req_lim, S_IRUGO, show_req_lim, NULL);
> -static DEVICE_ATTR(zero_req_lim, S_IRUGO, show_zero_req_lim, NULL);
> -static DEVICE_ATTR(local_ib_port, S_IRUGO, show_local_ib_port, NULL);
> -static DEVICE_ATTR(local_ib_device, S_IRUGO, show_local_ib_device, NULL);
> -static DEVICE_ATTR(ch_count, S_IRUGO, show_ch_count, NULL);
> -static DEVICE_ATTR(comp_vector, S_IRUGO, show_comp_vector, NULL);
> -static DEVICE_ATTR(tl_retry_count, S_IRUGO, show_tl_retry_count, NULL);
> -static DEVICE_ATTR(cmd_sg_entries, S_IRUGO, show_cmd_sg_entries, NULL);
> -static DEVICE_ATTR(allow_ext_sg, S_IRUGO, show_allow_ext_sg, NULL);
> +static DEVICE_ATTR_RO(id_ext);
> +static DEVICE_ATTR_RO(ioc_guid);
> +static DEVICE_ATTR_RO(service_id);
> +static DEVICE_ATTR_RO(pkey);
> +static DEVICE_ATTR_RO(sgid);
> +static DEVICE_ATTR_RO(dgid);
> +static DEVICE_ATTR_RO(orig_dgid);
> +static DEVICE_ATTR_RO(req_lim);
> +static DEVICE_ATTR_RO(zero_req_lim);
> +static DEVICE_ATTR_RO(local_ib_port);
> +static DEVICE_ATTR_RO(local_ib_device);
> +static DEVICE_ATTR_RO(ch_count);
> +static DEVICE_ATTR_RO(comp_vector);
> +static DEVICE_ATTR_RO(tl_retry_count);
> +static DEVICE_ATTR_RO(cmd_sg_entries);
> +static DEVICE_ATTR_RO(allow_ext_sg);
>
> static struct device_attribute *srp_host_attrs[] = {
> &dev_attr_id_ext,
> @@ -3617,9 +3617,9 @@ static int srp_parse_options(struct net *net, const char *buf,
> return ret;
> }
>
> -static ssize_t srp_create_target(struct device *dev,
> - struct device_attribute *attr,
> - const char *buf, size_t count)
> +static ssize_t add_target_store(struct device *dev,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> {
> struct srp_host *host =
> container_of(dev, struct srp_host, dev);
> @@ -3870,17 +3870,17 @@ static ssize_t srp_create_target(struct device *dev,
> goto out;
> }
>
> -static DEVICE_ATTR(add_target, S_IWUSR, NULL, srp_create_target);
> +static DEVICE_ATTR_WO(add_target);
>
> -static ssize_t show_ibdev(struct device *dev, struct device_attribute *attr,
> - char *buf)
> +static ssize_t ibdev_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> {
> struct srp_host *host = container_of(dev, struct srp_host, dev);
>
> return sysfs_emit(buf, "%s\n", dev_name(&host->srp_dev->dev->dev));
> }
>
> -static DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
> +static DEVICE_ATTR_RO(ibdev);
>
> static ssize_t show_port(struct device *dev, struct device_attribute *attr,
> char *buf)
>
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