svn commit: r183929 - head/sys/kern

[David Xu]

Author: davidxu
Date: Thu Oct 16 04:17:17 2008
New Revision: 183929
URL: http://svn.freebsd.org/changeset/base/183929

Log:
  Restore code wrongly removed in SVN revision 173004, it causes threaded
  process to be stuck in execv().
  
  Noticed by: delphij

Modified:
  head/sys/kern/kern_thread.c

Modified: head/sys/kern/kern_thread.c
==============================================================================
--- head/sys/kern/kern_thread.c	Thu Oct 16 01:46:01 2008	(r183928)
+++ head/sys/kern/kern_thread.c	Thu Oct 16 04:17:17 2008	(r183929)
@@ -572,8 +572,16 @@ thread_single(int mode)
 						    sleepq_abort(td2, EINTR);
 					break;
 				case SINGLE_BOUNDARY:
+					if (TD_IS_SUSPENDED(td2) &&
+					    !(td2->td_flags & TDF_BOUNDARY))
+						wakeup_swapper |=
+						    thread_unsuspend_one(td2);
+					if (TD_ON_SLEEPQ(td2) &&
+					    (td2->td_flags & TDF_SINTR))
+						wakeup_swapper |=
+						    sleepq_abort(td2, ERESTART);
 					break;
-				default:	
+				default:
 					if (TD_IS_SUSPENDED(td2)) {
 						thread_unlock(td2);
 						continue;