From: Joe Jin <joe.jin@oracle.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Juergen Gross <jgross@suse.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
Joe Jin <joe.jin@oracle.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] xen: export device state to sysfs
Date: Mon, 27 Aug 2018 11:44:41 -0700 [thread overview]
Message-ID: <030d112d-991f-4591-7eeb-94432a277c71__13922.8293592625$1535395437$gmane$org@oracle.com> (raw)
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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next reply other threads:[~2018-08-27 18:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-27 18:44 Joe Jin [this message]
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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