Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 84c57ad5 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/cio: export vpm via sysfs 



Add new attribute "vpm" to the subchannel sysfs directory of I/O
subchannels. This attribute contains a path mask indicating which
channel paths were successfully verified to be usable for I/O.

Reviewed-by: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent e6a0b7c9

drivers/s390/cio/device.c

+10 −0
Original line number Diff line number Diff line
@@ -632,6 +632,14 @@ initiate_logging(struct device *dev, struct device_attribute *attr, 
	return count;

}



static ssize_t vpm_show(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	struct subchannel *sch = to_subchannel(dev);



	return sprintf(buf, "%02x\n", sch->vpm);

}



static DEVICE_ATTR(chpids, 0444, chpids_show, NULL);

static DEVICE_ATTR(pimpampom, 0444, pimpampom_show, NULL);

static DEVICE_ATTR(devtype, 0444, devtype_show, NULL);
@@ -640,11 +648,13 @@ static DEVICE_ATTR(modalias, 0444, modalias_show, NULL); 
static DEVICE_ATTR(online, 0644, online_show, online_store);

static DEVICE_ATTR(availability, 0444, available_show, NULL);

static DEVICE_ATTR(logging, 0200, NULL, initiate_logging);

static DEVICE_ATTR(vpm, 0444, vpm_show, NULL);



static struct attribute *io_subchannel_attrs[] = {

	&dev_attr_chpids.attr,

	&dev_attr_pimpampom.attr,

	&dev_attr_logging.attr,

	&dev_attr_vpm.attr,

	NULL,

};