Commit cc85392b authored by Gioh Kim's avatar Gioh Kim Committed by Jason Gunthorpe
Browse files

RDMA/rtrs-clt: New sysfs attribute to print the latency of each path 

It shows the latest latency that the client checked when sending the
heart-beat.

Link: https://lore.kernel.org/r/20210407113444.150961-3-gi-oh.kim@ionos.com


Signed-off-by: default avatarGioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: default avatarJack Wang <jinpu.wang@ionos.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent dc3b66a0

drivers/infiniband/ulp/rtrs/rtrs-clt-sysfs.c

+16 −0
Original line number Diff line number Diff line
@@ -355,6 +355,21 @@ static ssize_t rtrs_clt_hca_name_show(struct kobject *kobj, 
static struct kobj_attribute rtrs_clt_hca_name_attr =

	__ATTR(hca_name, 0444, rtrs_clt_hca_name_show, NULL);



static ssize_t rtrs_clt_cur_latency_show(struct kobject *kobj,

				    struct kobj_attribute *attr,

				    char *page)

{

	struct rtrs_clt_sess *sess;



	sess = container_of(kobj, struct rtrs_clt_sess, kobj);



	return sysfs_emit(page, "%lld ns\n",

			  ktime_to_ns(sess->s.hb_cur_latency));

}



static struct kobj_attribute rtrs_clt_cur_latency_attr =

	__ATTR(cur_latency, 0444, rtrs_clt_cur_latency_show, NULL);



static ssize_t rtrs_clt_src_addr_show(struct kobject *kobj,

				       struct kobj_attribute *attr,

				       char *page)
@@ -398,6 +413,7 @@ static struct attribute *rtrs_clt_sess_attrs[] = { 
	&rtrs_clt_reconnect_attr.attr,

	&rtrs_clt_disconnect_attr.attr,

	&rtrs_clt_remove_path_attr.attr,

	&rtrs_clt_cur_latency_attr.attr,

	NULL,

};