diff options
| author | Joe Jin <joe.jin@oracle.com> | 2018-08-28 16:56:08 +0200 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2018-08-28 23:37:40 +0200 |
| commit | 076e2cedd6ea4786569c35f8725b4efdc1ecf2f2 (patch) | |
| tree | d5c6d2f1523f5f130b94e3b63d656d1456c2daa4 /drivers/xen/xenbus/xenbus_probe.c | |
| parent | x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear (diff) | |
| download | linux-076e2cedd6ea4786569c35f8725b4efdc1ecf2f2.tar.xz linux-076e2cedd6ea4786569c35f8725b4efdc1ecf2f2.zip | |
xen: export device state to sysfs
Export device state to sysfs to allow for easier get device state.
Signed-off-by: Joe Jin <joe.jin@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen/xenbus/xenbus_probe.c')
| -rw-r--r-- | drivers/xen/xenbus/xenbus_probe.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index f2088838f690..5b471889d723 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, }; |