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* [PATCH] xen: export device state to sysfs
@ 2018-08-27 18:44 Joe Jin
  2018-08-28  6:30 ` Juergen Gross
  2018-08-28  6:30 ` Juergen Gross
  0 siblings, 2 replies; 4+ messages in thread
From: Joe Jin @ 2018-08-27 18:44 UTC (permalink / raw)
  To: Boris Ostrovsky, Juergen Gross; +Cc: linux-kernel, xen-devel, Joe Jin

Export device state to sysfs to allow for easier get device state.

Signed-off-by: Joe Jin <joe.jin@oracle.com>
Boris Ostrovsky <boris.ostrovsky@oracle.com>
Juergen Gross <jgross@suse.com>
---
 drivers/xen/xenbus/xenbus_probe.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 74888cacd0b0..52f99b80a1c0 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -402,10 +402,19 @@ static ssize_t modalias_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(modalias);
 
+static ssize_t state_show(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%s\n",
+			xenbus_strstate(to_xenbus_device(dev)->state));
+}
+static DEVICE_ATTR_RO(state);
+
 static struct attribute *xenbus_dev_attrs[] = {
 	&dev_attr_nodename.attr,
 	&dev_attr_devtype.attr,
 	&dev_attr_modalias.attr,
+	&dev_attr_state.attr,
 	NULL,
 };
 
-- 
2.15.2 (Apple Git-101.1)


^ permalink raw reply related	[flat|nested] 4+ messages in thread
* [PATCH] xen: export device state to sysfs
@ 2018-08-27 18:44 Joe Jin
  0 siblings, 0 replies; 4+ messages in thread
From: Joe Jin @ 2018-08-27 18:44 UTC (permalink / raw)
  To: Boris Ostrovsky, Juergen Gross; +Cc: xen-devel, Joe Jin, linux-kernel

Export device state to sysfs to allow for easier get device state.

Signed-off-by: Joe Jin <joe.jin@oracle.com>
Boris Ostrovsky <boris.ostrovsky@oracle.com>
Juergen Gross <jgross@suse.com>
---
 drivers/xen/xenbus/xenbus_probe.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 74888cacd0b0..52f99b80a1c0 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -402,10 +402,19 @@ static ssize_t modalias_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(modalias);
 
+static ssize_t state_show(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%s\n",
+			xenbus_strstate(to_xenbus_device(dev)->state));
+}
+static DEVICE_ATTR_RO(state);
+
 static struct attribute *xenbus_dev_attrs[] = {
 	&dev_attr_nodename.attr,
 	&dev_attr_devtype.attr,
 	&dev_attr_modalias.attr,
+	&dev_attr_state.attr,
 	NULL,
 };
 
-- 
2.15.2 (Apple Git-101.1)


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^ permalink raw reply related	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-08-28  6:30 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2018-08-27 18:44 [PATCH] xen: export device state to sysfs Joe Jin
2018-08-28  6:30 ` Juergen Gross
2018-08-28  6:30 ` Juergen Gross
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2018-08-27 18:44 Joe Jin

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