[S390] hibernate: directly trigger subchannel evaluation

Using the generic css_schedule_eval to evaluate subchannels
while resuming from hibernation is very slow when used with
many devices. Provide a new evaluation trigger which exploits
css_sched_sch_todo and use this in the resume callback for
ccw devices.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index d734f4a0ecac..47269858ecb6 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1868,9 +1868,9 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev)
          */
         cdev->private->flags.resuming = 1;
         cdev->private->path_new_mask = LPM_ANYPATH;
-        css_schedule_eval(sch->schid);
+        css_sched_sch_todo(sch, SCH_TODO_EVAL);
         spin_unlock_irq(sch->lock);
-        css_complete_work();
+        css_wait_for_slow_path();
 
         /* cdev may have been moved to a different subchannel. */
         sch = to_subchannel(cdev->dev.parent);