X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fsvm%2Fqueue.h;h=2630f17a86ced045d75f7650d8f2f0025e5b04e2;hb=c5df8c71c;hp=3e8031e897b84da4073cd769a839b940e72c60d0;hpb=993683150202254c6ba8dd43e087a7229edd5d4c;p=vpp.git

diff --git a/src/svm/queue.h b/src/svm/queue.h
index 3e8031e897b..2630f17a86c 100644
--- a/src/svm/queue.h
+++ b/src/svm/queue.h
@@ -2,7 +2,7 @@
  *------------------------------------------------------------------
  * svm_queue.h - shared-memory queues
  *
- * Copyright (c) 2009 Cisco and/or its affiliates.
+ * Copyright (c) 2009-2019 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -39,12 +39,13 @@ typedef struct _svm_queue
 
 typedef enum
 {
-  SVM_Q_WAIT = 0,	/**< blocking call - must be used only in combination
-			     with condvars */
+  SVM_Q_WAIT = 0,	/**< blocking call - best used in combination with
+			     condvars, for eventfds we don't yield the cpu */
   SVM_Q_NOWAIT,		/**< non-blocking call - works with both condvar and
 			     eventfd signaling */
   SVM_Q_TIMEDWAIT,	/**< blocking call, returns on signal or time-out -
-			     must be used only in combination with condvars */
+			     best used in combination with condvars, with
+			     eventfds we don't yield the cpu */
 } svm_q_conditional_wait_t;
 
 /**