Module Name:	src
Committed By:	cl
Date:		Mon Nov 17 22:57:52 UTC 2003

Modified Files:
	src/sys/kern: kern_sa.c

Log Message:
- remove blocked/unblocked upcall ordering.
- always wait for unblocked upcall if we have to continue a blocked
  thread.

=> removes wakeup from sys_sa_stacks when a stack is returned.
=> avoids extra sa_unblockyield syscall when unblocked upcall is
   delivered before blocked upcall is processed.
=> avoids double pagefault if we continued a thread before the
   pagefault was resolved.
=> avoids losing unblocked state if we continued a thread after
   skipping the unblocked upcall.


To generate a diff of this commit:
cvs rdiff -r1.43 -r1.44 src/sys/kern/kern_sa.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.