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authorPaolo Bonzini <pbonzini@redhat.com>2009-07-08 12:27:39 +0200
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-12-03 11:14:49 -0800
commitae7888012969355a548372e99b066d9e31153b62 (patch)
tree08d57cf3355910a5aaedda8c8d77cd7d031a67f1
parentf8dc33088febc63286b7a60e6b678de8e064de8e (diff)
xen: wait up to 5 minutes for device connetion
Increases the device timeout from 10s to 5 minutes, giving the user a visual indication during that time in case there are problems. The patch is a backport of changesets 144 and 150 in the Xenbits tree. Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
-rw-r--r--drivers/xen/xenbus/xenbus_probe.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 9246a8c4ecf..649fcdf114b 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -901,7 +901,7 @@ static int print_device_status(struct device *dev, void *data)
static int ready_to_wait_for_devices;
/*
- * On a 10 second timeout, wait for all devices currently configured. We need
+ * On a 5-minute timeout, wait for all devices currently configured. We need
* to do this to guarantee that the filesystems and / or network devices
* needed for boot are available, before we can allow the boot to proceed.
*
@@ -916,18 +916,30 @@ static int ready_to_wait_for_devices;
*/
static void wait_for_devices(struct xenbus_driver *xendrv)
{
- unsigned long timeout = jiffies + 10*HZ;
+ unsigned long start = jiffies;
struct device_driver *drv = xendrv ? &xendrv->driver : NULL;
+ unsigned int seconds_waited = 0;
if (!ready_to_wait_for_devices || !xen_domain())
return;
while (exists_connecting_device(drv)) {
- if (time_after(jiffies, timeout))
- break;
+ if (time_after(jiffies, start + (seconds_waited+5)*HZ)) {
+ if (!seconds_waited)
+ printk(KERN_WARNING "XENBUS: Waiting for "
+ "devices to initialise: ");
+ seconds_waited += 5;
+ printk("%us...", 300 - seconds_waited);
+ if (seconds_waited == 300)
+ break;
+ }
+
schedule_timeout_interruptible(HZ/10);
}
+ if (seconds_waited)
+ printk("\n");
+
bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
print_device_status);
}