Some small enhancements to thread and workqueue libraries in zebra:

- Allow work queues to specify the yield duration for corresponding background thread
- Support using specified yield duration in thread yielding
- During work queue processing, if using a single list element with a meta-queue
  (like done in Zebra), do not exit after each element is processed, instead
  update the next-node upon a WQ_REQUEUE so that the WQ processing continues
  and is terminated by the yield logic.
- Enhance work queue debug output

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/workqueue.h b/lib/workqueue.h
index f59499a0a7..7d9a877d10 100644
--- a/lib/workqueue.h
+++ b/lib/workqueue.h
@@ -84,11 +84,14 @@ struct work_queue
     unsigned int max_retries;	
 
     unsigned int hold;	/* hold time for first run, in ms */
+
+    unsigned long yield; /* yield time in us for associated thread */
   } spec;
   
   /* remaining fields should be opaque to users */
   struct list *items;                 /* queue item list */
   unsigned long runs;                 /* runs count */
+  unsigned long yields;               /* yields count */
   
   struct {
     unsigned int best;